DOC023.52.90117 DOCXXX.xx.XXXX User Manual Title Page Template si794 C USER MANUAL August 2008, Edition X Contacting Conductivity 4-Wire Transmitters USER MANUAL October 2008, Edition 1 © HACH LANGE GmbH, 2008. All rights reserved. Printed in Germany. LANGE GmbH, 2008. All rights reserved.
Return of products under warranty Please contact our Service Team before returning a defective device. Ship the cleaned device to the address you have been given. If the device has been in contact with process fluids, it must be decontaminated/ disinfected before shipment. In that case, please attach a corresponding certificate, for the health and safety of our service personnel.
Table of contents Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Overview of si794 C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Assembly . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting parameter set 1/2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 External switchover of parameter sets . . . . . . . . . . . . . . . . . . . 67 Parameter set, individual settings (original for copy) . . . . . . 70 Calibration by entry of cell constant . . . . . . . . . . . . . . . . . . . . . 74 Calibration with calibration solution . . . . . . . . . . . . . . . . . . . . . 76 Product calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intended use The si794 C transmitter is used for measurement of electrical conductivity and temperature in liquids. Fields of application are: biotechnology, chemical industry, environment, food processing, water/waste-water treatment. The sturdy molded enclosure can be attached to a panel, wall, post or pipe railing. The optional hood provides protection against direct weather exposure and mechanical damage. The transmitter has been designed for application with 2- and 4-electrode sensors.
Safety information Be sure to read and observe the following! The device has been manufactured using state of the art technology and it complies with applicable safety regulations. When operating the device, certain conditions may nevertheless lead to danger for the operator or damage to the equipment. Therefore, please read this entire manual before unpacking, setting up, or operating this equipment. Pay particular attention to all danger and caution statements.
This symbol, when noted on the product, identifies a risk of chemical harm and indicates that only individuals qualified and trained to work with chemicals should handle chemicals or perform maintenance on chemical delivery systems associated with the equipment. This symbol, when noted on the product, identifies the presence of a noxious substance and a risk of chemical harm.
Signal words for hazard information This manual uses signal words to mark safety information. They are used alone or in combination with a safety symbol. If multiple hazards exist, this manual will use the signal word (Danger, Caution, Note) corresponding to the greatest hazard. DANGER Indicates a potentially or imminently hazardous situation which, if not avoided, could result in death or serious injury. CAUTION Indicates a potentially hazardous situation that may result in minor or moderate injury.
General safety information Do not use or install the si794 transmitter in any manner other than that which is specified in this manual. Important Note Commissioning must only be carried out by trained personnel. Whenever it is likely that protection has been impaired, the device shall be made inoperative and secured against unintended operation.
Information on how to prevent electrostatic discharges (ESD) Important Note The sensitive electronic components in the device can be damaged by static electricity. This can impair device performance and even lead to a complete failure of the device. Before connecting a sensor, for example, you should discharge any static electricity buildup from your body. To do so, you can touch an earth-grounded metal surface such as the chassis of a device or a metal conduit or pipe.
Overview of si794 C cond I hi 1 cond U hi 2 cond U lo 3 cond I lo 4 SG (Solution Ground) 5 shield C RTD D RTD E 2/4 El cond input Output 1 - output 1/2 11 + output 2 12 relay 1 13 relay 1/2 R2 14 relay 2 Alarm 15 alarm 16 alarm 17 clean / PSet 2 18 clean / PSet2 19 power 20 power R1 Clean PSet2 hold 6 hold/ control 7 control 8 + output 1 10 Output 2 Temp input 9 HOLD input Power Control input 11
Assembly Package contents Check the shipment for transport damage and completeness. The package should contain: • Front unit • Rear unit • Bag containing small parts • User manual • Specific test report 1 11 10 2 3 9 8 7 6 1 2 3 4 5 Jumper (2 x) Washer (1 x), for conduit mounting: Place washer between enclosure and nut Cable tie (3 x) Hinge pin (1 x), insertable from either side Enclosure screw (4 x) Fig.
Mounting plan 105 27 15 144 144 42 84 1 80 2 1 2 72 32 21 43 3 6,2 4 3 Strain relief (3 x) Strain relief or 1/2“ conduit opening, ø 21.5 mm (2 x) Conduit hardware not included! Knockout for pipe mounting (4 x ) Knockout for wall mounting (2 x ) 4 Fig.
Pipe mounting, panel mounting 40 132 60 1 2 3 4 5 1 2 3 4 5 Protective hood (LZY485) - if required Hose clamp with worm gear drive to DIN 3017 (2 x) Pipe-mount plate (1 x) For vertical or horizontal posts or pipes Self-tapping screw (4 x) Fig.: Bracket kit (LZY483) – All dimensions in mm! 165 132 173 1 Fig.
max. 25 78 1 2 3 4 5 27 Screw (4 x) Gasket (1 x) Control panel Span piece (4 x) Threaded sleeve (4 x) 1 5 4 2 1...22 3 Fig.
Installation and connection Installation instructions Caution! Danger of electric shock! Any work on the electrical installation may only be undertaken by experienced and qualified personnel in accordance with the applicable local safety regulations.
3 2 1 1 Terminals for temperature probe and outer shield 2 Terminals for sensor 3 Terminals for power supply Fig.
Wiring examples Cond measurement using 4-electrode sensor (Siemens Series 2100) RTD Gray RTD Pink shield Black SG SG* V lo I lo White Green V hi Yellow Brown I hi si794 C Caution! Place jumper across terminals 4 and 5! *) When using a sensor with Solution Ground connection (SG) or a separate SG connection, the jumper is not required! 18
Cond measurement with 2-electrode sensor (Polymetron Series 831x, HACH 3400.
Protective wiring of relay outputs Protective wiring of relay contacts Relay contacts are subject to electrical erosion. Especially with inductive and capacitive loads, the service life of the contacts will be reduced. For suppression of sparks and arcing, components such as RC combinations, nonlinear resistors, series resistors, and diodes should be used. Typical AC applications with inductive load 1 1 2 3 3 20 2 1 Load 2 RC combination, e.g.
Typical protective wiring measures A: DC application with inductive load B: AC/DC applications with capacitive load C: Connection of incandescent lamps A1 A2 A3 B1 B2 B3 C1 C3 Inductive load Free-wheeling diode, e.g. 1N4007 (Observe polarity) Contact Capacitive load Resistor, e.g. 8 Ω / 1 W at 24 V / 0.
Interface and navigation The si794 transmitter user interface contains a display, indicators, and keys for navigation and menu selection. User interface Use the arrow and enter keys to scroll through the menu and change settings. Use the indicators to identify which mode the transmitter is in. 6 5 7 4 8 3 9 2 10 1 11 Fig.
Interface and navigation Display 4.3 Display The figure below identifies of the possible andthat symbols Figure 11 identifies all of theall possible icons andicons symbols may be that besi792 seentransmitter in the si794 transmitter display. seenmay in the display. Figure 11 Display Fig.
Operation: Keypad Start, end calibration Start, end configuration Select digit position (selected position blinks) Edit digit • Calibration: Continue in program sequence • Configuration: Confirm entries, next configuration step • Measuring mode: Display output current Cal Info, display of calibration data Error Info: Display of last error message + 24 Start GainCheck device self-test
Safety functions Sensocheck, Sensoface sensor monitoring Sensocheck continuously monitors the sensor and its wiring. Sensocheck can be switched off (Configuration). Sensoface provides information on the conductivity sensor condition. Significant sensor polarization effects or an excessive cable capacitance are indicated. The three Sensoface indicators provide information on the sensor condition.
Safety functions Hold mode Display: The Hold mode is a safety state during configuration and calibration. Output current is frozen (Last) or set to a fixed value (Fix). Alarm and limit contacts are disabled. If the calibration or configuration mode is exited, the transmitter remains in the Hold mode for safety reasons. This prevents un desirable reactions of the connected peripherals due to incorrect configuration or calibration. The measured value and “HOLD” are displayed alternately.
External activation of HOLD mode The Hold mode can be activated from outside by sending a signal to the Hold input (e.g. from the process control system). Power supply 12...24 V AC/DC Hold 6 input 7 si794 Process control system Hold active Hold inactive 10 ... 30 V AC/DC 0 ... 2 V AC/DC Alarm The alarm delay is configurable. During an error message the alarm LED blinks or lights. Error messages can also be signaled by a 22 mA output current.
Configuration In the Configuration mode you set the device parameters. The device can store two different parameter sets and switch between them. Sensor data and “Clean/Pset2” output are edited in parameter set 1 only. They are valid for both parameter sets. Configuring Press conf. Parameter set 1 Configure: Enter mode code “1200”: Edit parameter set 1 with firm/proceed with enter. Parameter set 2 Configure: “88” appears in the display.
Menu structure of configuration The configuration steps are assigned to different menu groups. Use the arrow keys to jump between the individual menu groups. Each menu group contains menu items for setting the parameters. Press enter to access a menu item. Use the arrow keys to edit values. Press enter to confirm/save the settings. To return to measurement, press conf and then enter. Select menu group Menu group Code Output 1 o1. Display Select menu item Menu item 1 Menu item 2 ... Menu item ...
Overview of configuration steps Code Menu Selection / Default out1 Output 1 o1.
Code Menu Selection / Default rLAY Relay 1/2: Limits, controller, USP function rL. Select limit function / controller / USP L1. L2. Ct. U1.
Configuration Output 1 Select sensor type Menu group Code Display Select menu item Output 1 o1. Sensor selection Select process variable Select solution (Conc) Select 0-20 / 4-20 mA Characteristic: LIN / LOG Enter current start Enter current end Set output filter 22 mA for error HOLD mode Exit: Press conf, then enter.
Code Display Action o1. Select configuration (Press conf.) After correct input a welcome text (CONF) is displayed for approx. 3 sec After correct input a welcome text (CONF) is displayed for approx. 3 sec Choices For parameter set 1: Enter passcode “1200” Select position using 4 arrow key and edit number using 5 key. When the display reads “1200”, press enter to confirm.) For parameter set 2: Enter passcode “1288” Select position using 4 arrow key and edit number using 5 key.
Configuration Output 1 Select process variable Menu group Output 1 Code Display o1. Select menu item Sensor selection Select process variable Select solution (Conc) Select 0-20 / 4-20 mA Characteristic: LIN / LOG Enter current start Enter current end Set output filter 22 mA for error HOLD mode Exit: Press conf, then enter.
Code Display Action Choices o1. Select process variable: 000.0 mS Select using 4 key. Press enter to proceed. (0.000 µS 00.00 µS (USP) 000.0 µS 0000 µS 0.000 mS 00.00 mS 000.0 mS Conductivity: • 0.000 ... 9.999 µS/cm • 00.00 ... 99.99 µS/cm • 000.0 ... 999.9 µS/cm • 0.000 ... 9.999 mS/cm • 00.00 ... 99.99 mS/cm • 000.0 ... 999.9 mS/cm • 0.000 ... 9,999 S/m • 00.00 ... 99.99 S/m Resistivity: • 00.00 ... 99.99 MΩ·cm 0.000 S/m 00.00 S/m 00.00 MΩ 0.00 SAL 00.00 % USP) Salinity (SAL): • 0.0 ... 45.
Configuration Output 1 Concentration measurement: Select process solutions Menu group Code Display Select menu item Output 1 o1. Sensor selection Select process variable Select solution (Conc) Select 0-20 / 4-20 mA Characteristic: LIN / LOG Enter current start Enter current end Set output filter 22 mA for error HOLD mode Exit: Press conf, then enter.
Code Display Action Choices o1. Only with 00.00 % conc: select the process solution -01-SOL (-01-SOL -02-SOL -03-SOL -04-SOL -05-SOL) Select using 4 key. -01- NaCl (0.00 ... 9.99 % by wt) (0 ... 120 °C) -02- HCl (0.00 ... 9.99 % by wt) (-20 ... 50 °C) -03- NaOH (0.00 ... 9.99 % by wt) (0 ... 100 °C) -04- H2SO4 (0.00 ... 9.99 % by wt) (-17 ... 110 °C) -05- HNO3 (0.00 ... 9.99 % by wt) (-17 ...
Configuration Output 1 Output current range / LIN/LOG characteristic LIN characteristic: Current start / end Menu group Code Display Select menu item Output 1 o1. Sensor selection Select process variable Select solution (Conc) Select 0-20 / 4-20 mA Characteristic: LIN / LOG Enter current start Enter current end Set output filter 22 mA for error HOLD mode Exit: Press conf, then enter.
Code Display Action Choices o1. Set output current range Select using 4 arrow key. Press enter to proceed 4-20 mA (0 - 20 mA/ 4 - 20 mA) Select output characteristic Select using 4 arrow key. Press enter to proceed. (Step omitted for % (Conc) and SAL) LIN (LIN / LOG) With LIN selected: • Enter current start (lower end of scale). Select position using 4 key, edit number using 5 key. Press enter to proceed. • Enter current end (upper end of scale). Press enter to proceed 000.0 mS (xxx.x mS) 100.
Configuration Output 1 Output current range / LOG characteristic Current start/end Menu group Code Display Select menu item Output 1 o1. Sensor selection Select process variable Select solution (Conc) Select 0-20 / 4-20 mA Characteristic: LOG Enter current start Enter current end Set output filter 22 mA for error HOLD mode Exit: Press conf, then enter.
Code Display Action o1. Choices With LOG selected: • Enter lower end of scale (=current start) Select position using 4 key, edit number using5 key. 0.1 mS (0.1 mS 1.0 mS 10 mS 100 mS 1000 mS) Press enter to proceed. • E nter upper end of scale (=current end) Select position using 4 key, edit number using5 key. Press enter to proceed. 100 mS (0.1 mS 1.
Configuration Output 1 Time averaging filter Menu group Code Display Output 1 o1. Select menu item Sensor selection Select process variable Select solution (Conc) Select 0-20 / 4-20 mA Characteristic: LIN / LOG Enter current start Enter current end Set output filter 22 mA for error HOLD mode Exit: Press conf, then enter.
Code Display Action Choices o1. Time interval of output filter Default setting: 0 sec (inactive). To specify a time interval: Select position using , edit number using . Press enter to proceed. 0 sec 0 ... 120 sec Time averaging filter (attenuation) To smoothen the current output, a low-pass filter with adjustable filter time can be switched on. When there is a jump at the input (100 %), the output level is at 63 % after the time interval has been reached.
Configuration Output 1 Output current during error and HOLD Menu group Code Display Select menu item Output 1 o1. Sensor selection Select process variable Select solution (Conc) Select 0-20 / 4-20 mA Characteristic: LIN / LOG Enter current start Enter current end Set output filter 22 mA in the case of error HOLD mode Exit: Press conf, then enter.
Code Display o1. Action Choices 22 mA signal for error message Select using 4 key. Press enter to proceed OFF (OFF / ON) Output signal during HOLD LAST: During HOLD the last measured value is maintained at the output. FIX: During HOLD a value (to be entered) is maintained at the output. Select using 4 key. Press enter to proceed. LAST (LAST / FIX) Only with FIX selected: Enter current which is to flow at the output during HOLD Select position using 4 key and edit number using5 key.
Configuration Output 2 Temperature unit and probe / Output current Menu group Code Display Output 2 o2. Select menu item Select °C/°F Select temperature probe Select 0-20 / 4-20 mA Enter current start Enter current end Set output filter 22 mA for temp error HOLD mode Exit: Press conf, then enter.
Code Display o2. Action Choices Specify temperature unit Select using 4 key. Press enter to proceed. °C Select temperature probe Select using 4 key. Press enter to proceed. 100 PT 1000 PT 8.55 NTC 30 k NTC Set output current range Select using 4 key. Press enter to proceed. 4 - 20 mA (4 - 20 mA/ 0 - 20 mA) Current start: Enter lower end of scale. 000.0 °C (xxx.x °C) Current end: Enter upper end of scale. 100.0 °C (xxx.
Configuration Output 2 Time averaging filter Menu group Output 2 Code Display o2. Select menu item Select °C/°F Select 0-20 / 4-20 mA Enter current start Enter current end Set output filter 22 mA for temp error HOLD mode Exit: Press conf, then enter.
Code Display Action Choices o2. Time interval of output filter Default setting: 0 sec (inactive). To specify a time interval: Select position using , edit number using . Press enter to proceed. 0 sec (0...120 sec) Time averaging filter (attenuation) To smoothen the current output 2, a low-pass filter with adjustable filter time can be switched on. When there is a jump at the input (100 %), the output level is at 63 % after the time interval has been reached.
Configuration Output 2 Temperature error. Output current during HOLD Menu group Output 2 Code Display o2. Select menu item Select °C/°F Select 0-20 / 4-20 mA Enter current start Enter current end Set output filter 22 mA for temp error HOLD mode Exit: Press conf, then enter.
Code Display Action Choices o2. 22 mA signal for error message Select using 4 key. Press enter to proceed. OFF (OFF / ON) Output signal during HOLD LAST: During HOLD the last measured value is maintained at the output. FIX: During HOLD a value (to be entered) is maintained at the output. Select using 4 key. Press enter to proceed. LAST (LAST / FIX) Only with FIX selected: Enter current which is to flow at the output during HOLD Select position using 4 key and edit number using5 key.
Configuration Temperature compensation Menu group Temperature compensation Code Display tc. Select menu item Select temperature compensation Exit: Press conf, then enter.
Code Display Action Choices tc. Select temp compensation (not for USP) OFF: Temperature compensation switched off Select using 4key. Press enter to proceed.
Configuration Alarm settings Menu group Code Display Alarm settings Select menu item Select Sensocheck AL. Delay LED in HOLD mode Exit: Press conf, then enter. Alarm 15 16 Alarm contact The alarm contact is closed during normal operation (N/C). It opens in the case of alarm or power outage. As a result, a failure message is provided even in the case of line breakage (fail-safe behavior). For contact ratings, see Specifications.
Code Display AL. Action Choices OFF Select Sensocheck (Continuous monitoring of sensor (ON / OFF) properties) Select using 4 key. Press enter to proceed. Alarm delay 0010 sec Select position using 4key, edit number using 5key, press enter to proceed.
Configuration Limit function Use of relays / Settings of relay 1 Menu group Code Display Relay/Controller/ USP rL. Select menu item Use of relays L1. Contact function Contact response Enter setpoint Enter hysteresis Delay L2. Relay 2 menu group Ct. Controller menu group U1 USP: Relay 1 U2 USP: Relay 2 Exit: Press conf, then enter.
Action Choices rL. Use of relays: • Limit function (LiMIT) • Controller (CtROL) • USP function Select using 4key. Press enter to proceed. Note: Selecting • CtROL leads to Controller menu Ct. • USP leads to relay for USP menu U1 U2 LiMIT (LiMIT CtROL USP) L1. For limit 1 function principle, see Pg 59. Select using 4 key. Press enter to proceed. Lo (Lo/Hi) Limit 1 contact response N/O (N/O N/C) Code Display N/O: normally open contact N/C: normally closed contact Select using 4key.
Configuration Limit function Settings of relay 2 Menu group Code Display Relay/Controller/ USP rL. Select menu item Use of relays L1. Relay 1 menu group L2. Contact function Contact response Enter setpoint Enter hysteresis Delay Ct. Controller menu group U1 USP: Relay 1 U2 USP: Relay 2 Exit: Press conf, then enter.
Code Display L2. Action Choices For limit 2 function principle, see Fig. below. Select using 4 key. Press enter to proceed. Hi Limit 2 contact response N/O (N/O N/C) N/O: normally open contact N/C: normally closed contact (Lo) Select using 4 key. Press enter to proceed. Limit 2 setpoint 100.0 mS (xxxx mS) Limit 2 hysteresis 001.0 mS (xxxx mS) Select position using 4key, edit number using 5 key. Press enter to proceed. Select position using 4key, edit number using 5 key. Press enter to proceed.
Configuration Controller (for description, see page 84 et seq.) Setpoint. Neutral zone Menu group Code Display Relay/Controller/ USP rL. Select menu item Use of relays L1. Relay 1 menu group L2. Relay 2 menu group Ct. Controller setpoint Enter neutral zone (P) Controller gain (I) Reset time TR (D) Rate time TD Pulse length / Pulse frequency PLC: Pulse length PFC: Pulse frequency HOLD response U1 USP: Relay 1 U2 USP: Relay 2 Exit: Press conf, then enter.
Code Display Action Choices Ct. Setpoint 050.0 mS (xxxx) Neutral zone (dead band) 001.0 mS (xxxx) Controller: P action 0100 % (xxxx %) Controller: I action (reset time) 0000 sec (xxxx sec) Controller: D action (rate time) 0000 sec (xxxx sec) Pulse length /Pulse frequency Select using 4key. Press enter to proceed. PLC (PFC) PLC: Pulse length 0010 sec (xxxx sec) PFC: Pulse frequency 0060 /min (xxxx /min) Behavior during HOLD Select using 4key. Press enter to proceed.
Configuration Setting of relays for USP function Menu group Code Display Relay/Controller/ USP rL. Select menu item Use of relays L1. Relay 1 menu group L2. Relay 2 menu group Ct. Controller menu group U1 Enter USP factor Contact response relay 1 Delay relay 1 U2 Contact response relay 2 Delay relay 2 Exit: Press conf, then enter.
Code Display Action U1 With USP function selected, relays 1 and 2 are used for USP function (see page 94) USP must have been selected as measured variable. Choices For function of relay 1, see Pg 95. 100 % (10 ... 100 %) Enter reduced USP factor 10 ... 100% Select: Contact response relay 1 N/O: normally open contact N/C: normally closed contact N/O (N/O N/C) Select using 4key. Press enter to proceed. Enter delay. Select using 4 key, edit number using 5key. Press enter to proceed.
Configuration Controlling a rinsing probe or Signaling parameter set 1/2 Menu group Code Display Contact: CLEAN / PSet2 Cn. Select menu item Select CLEAN / PSet2 Rinsing interval Rinse time Contact response Action (rinsing probe) Choices Cn. Function selection*: • Control of rinsing probe (rinse) • Signaling active parameter set 2 Select using 4, press enter to proceed. rinse rinse Rinsing interval * Select using 4, edit number using5, press enter to proceed. 000.
Controlling a rinsing probe The “Clean” contact can be used to connect a simple rinsing probe. Rinse duration and rinsing interval are defined during configuration. Contact response can be set as N/O or N/C. e.g. spray cleaning Clean 17 18 Power supply Signaling parameter set 1/2 Depending on the selected parameter set, the relay is active or inactive. The signal can be used for super ordinated process control systems. Parameter set 2 is indicated by “88” in the upper left corner of the display.
Selecting parameter set 1/2 Manually or via a signal at the Control input Display After correct input a welcome text (CONF) is displayed for approx. 3 sec Action To select a parameter set, press conf, enter code: 7654 Select position using 4, edit number using 5, press enter to proceed. Wrong settings change the measurement properties! If an invalid code is entered, the transmitter returns to measuring mode.
Display Action Choices With Control input Ctr-EXT selected: You can switch between the parameter sets by applying an external signal to the Control input (see below). External switchover of parameter sets The parameter set can be selected from outside by sending a signal to the Control input (e.g. from the process control system). To do so, Ctr-EXT is set during configuration. Power supply Control 7 input 8 si794 Process control system 0 ... 2 V AC/DC Parameter set 1 selected 10 ...
Default settings of parameter sets Two complete parameter sets are stored in the EEPROM . As delivered, the two sets are identical but can be edited differently. Note: Fill in your configuration data on the following pages. Code. Parameter Default setting Code. Parameter Default setting o1. Sensor selection * o1. Process variable o1. Conc solution o1. 0/4-20 mA o1. Characteristic o1. Current start (LIN) o1. Current end (LIN) o1. Current start (LOG) o1. Current end (LOG) o1. Filter time o1.
Parameter set, individual settings Code. Parameter o1. Sensor o1. Process variable o1. Solution (Conc) o1. 0/4-20 mA o1. Characteristic (LIN/LOG) o1. Current start (LIN) o1. Current end (LIN) o1. Current start (LOG) o1. Current end (LOG) o1. Filter time o1. 22mA signal o1. HOLD response o1. Fix current o2. Unit °C / °F o2. Temp probe o2. 0/4 ... 20mA o2. Current start o2. Current end o2. Filter time o2. 22mA signal o2. HOLD response o2. Fix current tc.
Code. Parameter rL. Relay function L1. Contact function L1. Contact response L1. Setpoint L1. Hysteresis L1. Delay L2. Contact function L2. Contact response L2. Setpoint L2. Hysteresis L2. Delay Ct. Setpoint Ct. Neutral zone Ct. P action Ct. I action Ct. D action Ct. PLC/PFC controller Ct. Pulse length Ct. Pulse frequency Ct.
Calibration Calibration adjusts the transmitter to the sensor. Activate with cal Activation Enter passcode • Entry of cell constant: 1100 • With calibration solution: 0110 • Product calibration: 1105 • Temp probe adjustment: 1015 Use and to edit a parameter. Press enter to confirm/continue. (To exit, press cal, then enter.) HOLD During calibration the transmitter remains in the Hold mode. HOLD icon Input errors 72 During calibration the transmitter remains in the Hold mode for reasons of safety.
Exit Press cal to exit. The measured value is shown in the main display alternately with “Hold”, “enter” blinks, Sensoface is active. Press enter key to end the Hold mode. The measured value is dispålayed. The output current remains frozen for another 20 sec (HOLD icon on, “hourglass” blinks). Information on calibration Calibration adapts the transmitter to the conductivity sensor. Calibration can be performed by: • Input of cell constant (e.g.
Calibration by entry of cell constant Input of cell constant with simultaneous display of uncorrected conductivity value and temperature Display Action Remark Press cal, enter code: 1100 Select position using 4, edit number using5, press enter to proceed. The transmitter is in the Hold mode. If an invalid code is entered, the transmitter returns to measuring mode. Ready for calibration Display (3 sec) Enter cell constant of connected sensor: The lower display shows the measured conductivity value.
Display Action Remark The transmitter now displays the conductivity and temperature. The measured value is shown in the main display alternately with “Hold”. “enter” blinks. Press enter to end calibration. After end of calibration, the outputs remain in Hold mode for approx. 20 sec.
Calibration with calibration solution Input of temperature-corrected value of calibration solution with simultaneous display of cell constant Display Action Remark Press cal, enter code: 0110 Select using 4, edit number using5, proceed with enter. The transmitter is in the Hold mode. If an invalid code is entered, the transmitter returns to measuring mode. Ready for calibration Display (3 sec) Remove and clean sensor Immerse sensor in calibration solution.
Display Action Remark The determined cell constant is displayed. Confirm with enter. The transmitter now displays the conductivity and temperature. Clean sensor and re-place it in the process. The measured value is shown in the main display alternately with “Hold”. “enter” blinks. End calibration using enter. After end of calibration, the outputs remain in Hold mode for approx. 20 sec.
Product calibration Calibration by sampling For product calibration the measured variable is used as configured: Conductivity (µS/cm, mS/cm, S/m), resistivity (MΩ·cm). During product calibration the sensor remains in the process. The measurement is only interrupted briefly. Calibration is without TC correction. Procedure: During sampling the currently measured value is stored in the transmitter. The transmitter immediately returns to measuring mode.
Display Action Remark Measuring mode: Until the sample value is determined and can be entered, the transmitter is in measuring mode. From the blinking CAL mode indicator you see that product calibration has not been terminated. Display (approx. Product calibration step 2: 3 sec) When the sample value has been determined, open the product calibration once more (cal, code 1105). Enter lab value. The new cell constant is calculated. Press enter to confirm. The new cell constant is displayed.
Temp probe adjustment Display Action Remark Select calibration (Press cal, enter passcode: 1015) Select position usingkey, edit number using key. Press enter to proceed. Wrong settings change the measurement properties! If an invalid code is entered, the transmitter returns to measuring mode. Measure the temperature of the process medium using an external thermometer The transmitter is in the Hold mode. Enter measured temperature value. Select position usingkey, edit number using key.
Diagnostics functions Display Remark Display of output currents Press enter while in measuring mode. The current at output 1 is shown in the main display, the current at output 2 in the secondary display. After 5 sec the transmitter returns to measuring mode. Display of calibration data (Cal Info) Press cal while in measuring mode and confirm code 0000. The current cell constant is shown in the main display. After 20 sec the transmitter returns to measuring mode (immediate return at pressing enter).
Diagnostics functions These functions are used for testing the connected peripherals. Display Action / Remarks Specify current at output 1 • Press conf, enter code: 5555 The current indicated in the main display for output 1 can be edited. Select position using , edit number using , press enter to confirm. Then the entered value will be shown in the secondary display. The transmitter is in Hold mode. Press conf, then enter to return to measurement (Hold remains active for another 20 sec).
Display Action / Remarks Controller characteristic +100 % Controller output Controller test (manual specification of controller output) • Press conf, enter code: 5559 After function activation “Ctrl” is displayed for approx. 3 sec. With the controller turned off, “OFF” is displayed in addition, then return to measuring mode. The function is used to start up control loops or check the actuators.
Controller functions PID controller P controller Application in integrating systems (e.g. closed tank, batch processes). PI controller Application in non-integrating systems (e.g. drains). PID controller The additional derivative action compensates for measurement peaks.
Controller equations 1 TR Controller output Y = YP + P action I action with: YP TR TD Proportional action YP YP = Setpoint - Meas. value Measuring range dYP YPdt + TD * KC KC dt D action Proportional action Reset time [s] Rate time [s] Controller gain [%] Neutral zone (Y=0) Tolerated deviation from desired value. With the setting “1 mS/cm” a deviation of ± 0.5 mS/cm from the desired value does not activate the controller.
Controller functions Pulse length / pulse frequency controller Pulse length controller (PLC) The pulse length controller is used to operate a valve as an actuator. It switches the contact on for a time that depends on the controller output. The period is constant. A minimum ON time of 0.5 sec is maintained even if the controller output takes corresponding values.
Pulse frequency controller (PFC) The pulse frequency controller is used to operate a frequencycontrolled actuator (metering pump). It varies the frequency with which the contacts are switched on. The maximum pulse frequency [pulses/min] can be defined. It depends on the actuator. The contact ON time is constant. It is automatically calculated from the user-defined maximum pulse frequency.
Red LED Out 1 (22 mA) Measured value blinks Sensor x x x ERR 02 Measured value blinks Unsuitable sensor x x x ERR 98 “Conf” blinks System error Configuration or calibration data defective; completely reconfigure and recalibrate the transmitter. Memory error in device program x x x x ERR 99 “FAIL” blinks Factory settings EEPROM or RAM defective This error message only occurs in the case of a total defect. The transmitter must be repaired and recalibrated at the factory.
Red LED Out 1 (22 mA) Current output 1 Current below 0 (3.8) mA x x x ERR 12 Current output 1 Current above 20.5 mA x x x ERR 13 Current output 1 Current span too small / too large x x x ERR 21 Current output 2 Current below 0 (3.8) mA x x x ERR 22 Current output 2 Current above 20.
Timeout Alarm contact LED Cleaning contact Rel.1/2 Limit value Out 2 Out 1 Operating status Rel.
LED Timeout Alarm contact Cleaning contact Rel.1/2 Limit value Rel.
Sensoface The little smiley in the display (Sensoface) provides information about the sensor condition (defects, maintenance required, cable capacitance too high). It alerts to significant sensor polarization or excessive cable capacitance e.g. caused by an unsuitable cable or a cable that is too long. The permitted calibration ranges and the conditions for a friendly, neutral, or sad Sensoface are summarized in the following chart. Additional icons refer to the error cause.
Display Problem Sensor defect Temperature error Status Wrong or defective sensor Significant polarization of sensor Excessive cable capacitance (also see error message Err 33 on page 89). Temperature outside range for TC, conc, SAL Note: When very fast response times (t90) are required, e.g. when detecting separation layers, Sensocheck should be switched off (see “Specifications” on page 98).
USP function According to the “USP” directive (U.S. Pharmacopeia), Section 645 “Water Conductivity”, the conductivity of pharmaceutical waters can be monitored online. To do so, the conductivity is measured without temperature compensation and is compared with limit values (see “Temperature/conductivity table according to USP” on Pg 95). The water is usable if the conductivity is below the USP limit. For higher conductivities, further test steps must be performed according to the directive.
Temperature/conductivity table as per USP Temperature in °C Conductivity in µS/cm Temperature in °C Conductivity in µS/cm 0 0.6 55 2.1 5 0.8 60 2.2 10 0.9 65 2.4 15 1.0 70 2.5 20 1.1 75 2.7 25 1.3 80 2.7 30 1.4 85 2.7 35 1.5 90 2.7 40 1.7 95 2.9 45 1.8 100 3.1 50 1.
Appendix Product line and accessories Devices Order No. si794 C LXV506.99.00002 Mounting accessories Pipe-mount kit Panel mounting kit Protective hood Pillar incl.
Specifications Conductivity input Effective ranges Input for 2-electrode/4-electrode sensors Conductivity 0.2 µS · c ... 1000 mS · c Ranges * Conductivity 0.000 ... 9.999 µS/cm 000.0 ... 99.99 µS/cm 000.0 ... 999.9 µS/cm 0000 ... 9999 µS/cm 0.000 ... 9.999 mS/cm 00.00 ... 99.99 mS/cm 000.0 ... 999.9 mS/cm 0.000 ... 9.999 S/m 00.00 ... 99.99 S/m Resistivity 00.00 ... 99.99 MΩ · cm 0.00 ... 9.
Sensocheck sensor monitoring olarization detection and monitoring of P cable capacitance Sensoface Provides information on the sensor condition (Sensocheck) Sensor monitor irect display of measured values from sensor for D validation (resistance/temperature) USP function ater monitoring in the pharmaceutical industry W (USP) with additional user-defined limit value (%), output via relay contact Temperature input * Pt100 / Pt1000/ NTC 30 kΩ / NTC 8.
Specifications HOLD input Function Switching voltage CONTROL input Function Switching voltage Galv. separated (OPTO coupler) Switches transmitter to HOLD mode 0 ... 2 V (AC/DC) inactive 10 ... 30 V (AC/DC) active Galv. separated (OPTO coupler) Switch-over to second parameter set 0 ... 2 V (AC/DC) Parameter set 1 10 ... 30 V (AC/DC) Parameter set 2 Output 1 Process variable * Characteristic Overrange* Output filter * Meas.
Limit values Contact ratings Contact response * Delay * Switching points * Hysteresis * PID process controller Setpoint specification * Neutral zone * Proportional action * Integral action* Derivative action * Controller type * Pulse period * Max. pulse frequency * Output via relay contacts R1, R2 Contacts R1, R2 floating but inter-connected AC< 250 V / < 3 A / < 750 VA DC< 30 V / < 3 A / < 90 W N/O or N/C 0000 ... 9999 s As desired within range 0 ...
Specifications Display Main display Secondary display Sensoface Mode indication Alarm indication LC display, 7-segment with icons Character height 17 mm, unit symbols 10 mm Character height 10 mm, unit symbols 7 mm 3 status indicators (friendly, neutral, sad face) 5 mode indicators "meas", "cal", "alarm", "cleaning", "config" 18 further icons for configuration and messages Red LED in case of alarm or HOLD, user defined Keypad 5 keys: [cal] [conf ] [4] [5] [enter] Service functions Curr
Protection against electric shock Safe electrical isolation of all extra-low-voltage circuits against mains by double insulation to EN 61010-1 Power supply 24 (-15%) ... 230 V AC/DC (+10%); approx. 5 VA, 2.5 W AC: 45 ... 65 Hz; Overvoltage category II, protection class II Nominal operating conditions Ambient temp -20 ... +55 °C Transport/Storage temp -20 ... +70 °C Relative humidity 10 ... 95% not condensing Power supply 24 (-15%) ... 230 V AC/DC (+10%) Frequency for AC 45 ...
Calibration solutions Potassium chloride solutions (Conductivity in mS/cm) Temperature Concentration 1) [˚C] 0.01 mol/L 0.1 mol/L 1 mol/L 0 5 10 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 0.776 0.896 1.020 1.147 1.173 1.199 1.225 1.251 1.278 1.305 1.332 1.359 1.386 1.413 1.441 1.468 1.496 1.524 1.552 1.581 1.609 1.638 1.667 1.696 7.15 8.22 9.33 10.48 10.72 10.95 11.19 11.43 11.67 11.91 12.15 12.39 12.64 12.88 13.13 13.37 13.62 13.87 14.12 14.37 14.62 14.88 15.13 15.39 15.
Sodium chloride solutions (Conductivity in mS/cm) Temperature Concentration [˚C] 0.01 mol/L 1) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 0.631 0.651 0.671 0.692 0.712 0.733 0.754 0.775 0.796 0.818 0.839 0.861 0.883 0.905 0.927 0.950 0.972 0.995 1.018 1.041 1.064 1.087 1.111 1.135 1.159 1.183 1.207 1.232 1.256 1.281 1.306 1.331 1.357 1.382 1.408 1.434 1.460 0.1 mol/L 1) 5.786 5.965 6.145 6.327 6.510 6.695 6.881 7.068 7.257 7.447 7.638 7.831 8.
Concentration curves -01- Sodium chloride solution NaCl χ [mS/cm] [ϒC] 400 100 82 300 60 46 200 35 20 10 0 100 0 0 5 % by wt 10 c [Gew%] Conductivity versus substance concentration and process temperature for sodium chloride solution (NaCl) 106
-02- Hydrochloric acid HCl χ [mS/cm] 1000 [ϒC] 50 40 800 30 25 20 600 10 0 400 200 0 0 5 % by wt 10 c [Gew%] Conductivity versus substance concentration and process temperature for hydrochloric acid (HCl) Source: Haase/Sauermann/Dücker; Z. phys. Chem., New Edition, Vol.
Concentration curves -03- Sodium hydroxide solution NaOH χ [mS/cm] 1000 [ϒC] 100 90 80 800 70 60 600 50 40 400 30 25 20 10 0 200 0 5 c [Gew%] % by wt 10 Conductivity versus substance concentration and process temperature for sodium hydroxide solution (NaOH) 108
-04- Sulfuric acid H2SO4 χ [mS/cm] 600 [ϒC] 93,3 82,2 71,1 60,0 48,9 37,8 400 26,7 15,6 4,4 200 0 0 5 c [Gew%] % by wt 10 Conductivity versus substance concentration and process temperature for sulfuric acid (H2SO4) Source: Darling; Journal of Chemical and Engineering Data; Vol. 9 No.
Concentration curves -05- Nitric acid HNO3 χ [mS/cm] [ϒC] 800 50 40 600 30 20 400 10 0 200 0 0 5 % by wt 10 c [Gew%] Conductivity versus substance concentration and process temperature for nitric acid (HNO3) Source: Haase/Sauermann/Dücker; Z. phys. Chem. New Edition, Vol.
Glossary Conductance Conductance G [S] = 1 / R [Ω] Conductivity Conductivity χ [S/cm] = G [S] · c [1/cm] Conductivity sensor Either 2- or 4-electrode sensors can be connected. The cell constant of the sensor in use must be entered or be determined using a calibration solution taking account of the temperature. A special device variant (si794 I) is provided for electrodeless sensors.
Contact information HACH LANGE GMBH Willstätterstraße 11 D-40549 Düsseldorf Tel. +49 (0)2 11 52 88-320 Fax +49 (0)2 11 52 88-210 info@hach-lange.de www.hach-lange.de HACH LANGE KFT. Hegyalja út 7-13. H-1016 Budapest Tel. +36 (06)1 225 7783 Fax +36 (06)1 225 7784 info@hach-lange.hu www.hach-lange.hu HACH LANGE AB Vinthundsvägen 159A SE-128 62 Sköndal Tel. +46 (0)8 7 98 05 00 Fax +46 (0)8 7 98 05 30 info@hach-lange.se www.hach-lange.se DR. BRUNO LANGE AG Juchstrasse 1 CH-8604 Hegnau Tel.
HACH LANGE LTD Unit 1, Chestnut Road Western Industrial Estate IRL-Dublin 12 Tel. +353(0)1 46 02 5 22 Fax +353(0)1 4 50 93 37 info@hach-lange.ie www.hach-lange.ie HACH LANGE 8, Kr. Sarafov str. BG-1164 Sofia Tel. +359 (0)2 963 44 54 Fax +359 (0)2 866 04 47 info@hach-lange.bg www.hach-lange.bg HACH LANGE S.L.U. Edif. Arteaga Centrum C/Larrauri, 1C- 2ª Pl. E-48160 Derio/Vizcaya Tel. +34 94 657 33 88 Fax +34 94 657 33 97 info@hach-lange.es www.hach-lange.es HACH LANGE SA Motstraat 54 B-2800 Mechelen Tél.
Limited warranty Hach Company warrants its products to the original purchaser against any defects that are due to faulty material or workmanship for a period of two years from date of shipment unless otherwise noted in the product manual. In the event that a defect is discovered during the warranty period, Hach Company agrees that, at its option, it will repair or replace the defective product or refund the purchase price excluding original shipping and handling charges.
• Freight charges on expedited or express shipment of warranted parts or product • Travel fees associated with on-site warranty repair This warranty contains the sole express warranty made by Hach Company in connection with its products. All implied warranties, including without limitation, the warranties of merchantability and fitness for a particular purpose, are expressly disclaimed.
Index °C 47 °F 47 22 mA for temp error 50 22 mA in the case of error 44 2-electrode sensor 19 4-electrode sensor 18 88, display icon 67 A Alarm 27 Alarm contact 54 Alarm delay 54 Alarm settings 54 Assembly 12 Automatic device self-test 25 B Bracket kit (LZY483) 14 C Cable gland 13 Calibration 72 Calibration by entry of cell constant 74 Calibration by sampling 78 Calibration solutions 104 Calibration with calibration solution 76 Characteristic: LIN / LOG 38 “Clean” contact 65 Coaxial electrodes 19 Concentrat
Configuration: Output 1 32 Configuration: Output 2 46 Connections 16 Contact information 112 Controller 60 Controller equations 85 Controller functions 84 Controller test 83 Controlling a rinsing probe 65 Current source 82 Current start and current end, assigning process variables 39 D Device self-test 25 Diagnostics functions 81 Display 23 Disposal 2 E Electrostatic discharge 10 Enclosure components 12 Error messages (error codes) 88 Error, output current 44 External activation of HOLD mode 27 External swi
Index H Hold mode 26 HOLD, output current 44 Hydrochloric acid HCl 107 Hysteresis 57 I Installation 16 Intended use 5 K Keypad 24 L LAST 45 Limit delay 57 Limit function 56 Limited warranty 114 Linear temperature compensation 53 M Measurement 80 Measurement range over 3 decades 41 Menu structure of configuration 29 Mounting plan 13 N Neutral zone 60 Nitric acid HNO3 110 O Operating states 90 Output current range, characteristic 38 Output filter settings 42 Output signal during HOLD 45 Overview 11 118
P Package contents 12 Panel mounting 14 Panel mounting kit (LZY484) 15 Parameter set 2 selected 67 Parameter set for copy 70 Parameter set, individual settings 70 Parameter sets, default settings 69 Pipe mounting 14 Potassium chloride solutions 104 Process temperature: Current start and current end 47 Product calibration 78 Product line and accessories 97 Protective hood (LZY485) 14 PSet2 65 Pulse frequency controller (PFC) 87 Pulse length / Pulse frequency controller 61 Pulse length controller (PLC) 86 R R
Index Select process variable 34 Select pulse length / pulse frequency controller 60 Select Sensocheck 55 Select sensor 33 Select temperature compensation 52 Select temperature probe 46 Sensocheck 25, 92 Sensocheck, selection 54 Sensoface 25, 92 Sensor connection 18 Sensor type selection 32 Setpoint 60 Settings of relay 56 Signaling parameter set 1/2 64 Sodium chloride solution NaCl 106 Sodium chloride solutions 105 Sodium hydroxide solution NaOH 108 Specifications 98 Sulfuric acid H2SO4 109 Switching betwe
U Use of relays 57 User interface 22 USP function 62, 94 W Warranty 114 Wiring examples 18 121
Passcodes (For fast access to the functions) Calibration Key + Code Description 0000 Cal Info Display of cell constant 0110 Calibration by entry of solution 1100 Calibration by entry of cell constant 1105 Product calibration 1015 Temp probe adjustment Configuration Key + Code Description 0000 Error Info Display of last error 1200 Configuring parameter set 1 1288 Configuring parameter set 2 2222 Sensor monitor Display resistance and temp 7654 Parameter set 1/2 Internal / external sw
