Alpha pH/ORP 1000 Process Controller/Transmitter
R AQUAfast, Cahn, ionplus, KNIpHE, No Cal, ORION, perpHect, PerpHecT, PerpHecTion, pHISA, pHuture, Pure Water, Sage, Sensing the Future, SensorLink, ROSS, ROSS Ultra, Sure-Flow, Titrator PLUS and TURBO2 are registered trademarks of Thermo Fisher.
Preface This manual serves to explain the use of the Alpha pH1000 pH/ORP process controller/transmitter. The manual functions in two ways, firstly as a step by step guide to help the user operate the instrument. Secondly, it serves as a handy reference guide. This instruction manual is written to cover as many anticipated applications of the Alpha pH1000 pH/ORP process controller/transmitter.
Safety Information The Controller/ Transmitter shall be installed and operated only in the manner specified in this Instruction manual. Only skilled, trained or authorized person should carry out installation, setup and operation of the instrument. Before powering up the unit, make sure that power source is connected to it as specified on the top label. Failure to do so may result in permanent damage of the unit. The unit has live and exposed parts inside.
TABLE OF CONTENTS 1 INTRODUCTION ___________________________________________________ 1 1.1 1.2 2 ASSEMBLY AND INSTALLATIONS ____________________________________ 2 2.1 2.2 3 Auto mode (mode after switch-on) ................................................................. 25 Manual mode .................................................................................................
1 1.1 INTRODUCTION Description of Unit Thank you for purchasing the ¼ DIN Alpha pH1000 pH/ORP process controller/transmitter. This unit is used for measuring either pH or ORP parameter one at a time, and the operational mode is switchable from the menu. You can use this unit to measure pH or ORP with limit control. This controller has many user-friendly and safety features which include: • • • • • • • • • • • • • • • • • • 1.
2 2.1 ASSEMBLY AND INSTALLATIONS Measurement and Control System A typical measurement system consists of: • a pH/ORP process controller • a pH/ORP combination electrode with integrated or separate temperature sensor Pt 100/1000, • an immersion, flow or process assembly with or without a potential matching pin (PMP) • a final control element such as pump or valve • a recorder • an appropriate pH or ORP measurement cable Flow Assembly PH Controller Chart Recorder Process Assembly with Electrode 2.
3 ELECTRICAL CONNECTIONS 3.1 Connection Diagram ENSURE electrical mains is disconnected before proceeding.
Temp. PE N 3 2 L pH S 22 1 0 / PA 21 20 19 18 s BNC Symmetrical high-impedance connections Measuring Cable pH Combination Electrode Potential Matching Pin (PMP) Temp.
3.2 Back Panel ENSURE electrical mains is disconnected before proceeding. The back panel consists of two connectors. The first connector is the 17-way PCB edge connector and the other is the 5-way connector. Connection for the 17-way screw terminals (from left to right): 1. AC mains live wire 10. Alarm/Wash relay working position (NO) 2. AC mains neutral wire 11. Alarm/Wash relay common 3. AC mains protective earth wire 12. Alarm/Wash relay resting position (NC) 4. Low set relay resting position (NC) 13.
4 OVERVIEW 4.1 4.1.1 Keypad and Display Keypad • Perform rapid 2-point calibration • Allows entry to Set up mode • Select individual functions within the function group of Set up mode • Store input data in the Set up mode • Start calibration in the calibration mode • Select various function groups in the Set up mode.
4.2 Function Groups The main function and sub-function groups are organised in a matrix format for configuration and selection of parameters.
4.3 Control Concept The main function and sub-function groups are organised in a matrix format as shown below. These functions can be accessed via the front keypad for configuration and selection of parameters. MEASURE CODE OFFSET Set Offset SET C Switch On/Off ATC Process temp. (MTC) Calib. temp.
5 5.1 MEASUREMENT Display in Measurement mode When the controller is initially powered on, it automatically enters into the Measurement mode after the large dual LCD displays all segments briefly. The upper display shows the measured pH or ORP value, while lower display shows either temperature value if controller is set for pH measurement or “OrP” if it is set for ORP measurement. Annunciators at right side of display indicate whether controller is set for pH or mV measurement.
5.2.1 How to enter and change parameters in Calibration mode 1) Press the CAL key. The upper display shows “000” and the SETUP lower display shows “C.Cd” to prompt the user to enter the Calibration security code. 2) Press the ▲ or ▼ key to scroll upper display to Calibration HOLD security code “11”. 3) Press the ENTER key. If configured for pH control, the display shows “CAL pH”. If configured for ORP control, the display shows “CAL OrP”. 4) Press ENTER key again to begin calibration.
6 CALIBRATION You can reach the Calibration mode directly from the Measurement mode by pressing the CAL key and entering the Calibration security code. You can also reach the Calibration mode from the Advanced Setup mode. 6.1 pH Calibration This unit features 7 preset buffer values (1.01, 4.01, 6.86, 7.00, 9.00, 9.18 and 10.01) for fast auto calibration. When you calibrate this instrument, you need a standard pH buffer solution that matches one of these values. 1) Enter Calibration mode.
8) Press the ENTER key. If you entered the calibration mode using the CAL key, the controller will return to the Measurement mode. If you entered the calibration mode from the Advanced Set-up mode, the controller will return to the sub-function menu. Note: If there is a calibration error, the controller displays “ERR”. If this happens, press both the ▲ and ▼ keys (escape) to restart the calibration beginning from step 1.
6.3 ORP – % Calibration The ORP % mode allows you to calibrate at two points: a low concentration sample (20%) and a high concentration sample (80%). To calibrate the controller for ORP %: 1) Enter Calibration mode. While in the Measurement mode, press the CAL key and scroll to Calibration SETUP code “11”. Press the ENTER key again. The upper and lower display reads “CAL OrP”. HOLD CAL NOTE: If the display reads “CAL pH”, see section 7.6.2 for procedures on how to switch from pH to ORP mV readings.
7 ADVANCED SET UP MODE 7.1 Electrode Offset (OFS) sub-function You can perform electrode offset only in the pH mode. This mode allows you to change the offset parameter to make reading corrections without removing the electrode from the control system. You can make adjustments of up to ±120 mV. The controller will add or subtract the value from the measured pH and display the correct value.
7.2.2 Temperature calibration (ATC mode only) SETUP HOLD SETUP HOLD 0.0 25.0 7.2.3 Setting manual temperature compensation Note: This option is not available when the controller is set for ATC operation. SETUP HOLD SETUP HOLD °C ATC 1) Select “ATC on” as described above in Section 7.2.1. 2) Press ENTER key. The upper display indicates current temperature offset. The current measured temperature is shown in the lower display.
7.3 Control Relay A/ Control Relay B (SP1/SP2) sub-function The SP1 option sets operating parameters for Relay A; the SP2 option sets operating parameters for relay B. Since these groups have the same set-up parameters, they are described together. 7.3.1 SETUP HOLD SETUP HOLD Entering Set point 1 (Set point 2) sub-function 1) Sp1 4.00 Sp1 SETUP HOLD Sp1 pH Enter Advanced Set-up mode. Press the ENTER key and scroll to Advanced Set-up security code “22”. Press the ENTER key again.
1) Follow directions in 7.3.1 to enter Control Relay mode. 2) Press the ENTER key. Scroll with the ▲ or ▼ key until the SETUP pH upper display shows the hysteresis (dead band) value and the lower display shows “HYS”. HOLD 3) Press the ▲ or ▼ keys to enter your hysteresis value for Set point 1 (Set point 2). Your controller will activate at the value you select. 4) Press the ENTER key to confirm your selection. 5) Proceed to 7.3.
7.4 Controller (Cntr) sub-function You can set the controller’s parameters in this sub-function. 7.4.1 Entering Controller sub-function 1) Enter Advanced Set-up mode. Press the ENTER key and scroll to Advanced set-up security code “22”. Press the ENTER key again. 2) Press the ▲ or ▼ key to scroll until upper display shows “Cntr”. SETUP HOLD SETUP SETUP SETUP HOLD HOLD HOLD Plc SETUP HOLD Pfc 7.4.
1) Follow directions in 7.4.1 to enter Controller mode. 2) Press the ENTER key. Scroll until the lower display shows “rEL” and the upper display shows the current selection (deenergised = dEEN or energised = EN). 3) Press the ▲ or ▼ key to choose de-energised or energised relay state. 4) Press the ENTER key to confirm your selection. 5) Proceed to 7.4.4 step 3, or return to Measurement mode by pressing the ▲ and ▼ keys simultaneously (escape). SETUP HOLD SETUP HOLD 7.4.
7.5 Current Output (rng) sub-function This sub-function lets you set the controller current output range of this unit. SETUP 7.5.1 Entering current output sub-function 1) Enter Advanced Set-up mode. Press the ENTER key and scroll to Advanced Set-up security code “22”. Press the ENTER key again. 2) Press the ▲ or ▼ key to scroll until the upper display shows “rng”. HOLD SETUP HOLD SETUP HOLD SETUP HOLD 4-20 0 14 pH pH 7.5.
7.6 Configuration (ConF) sub-function This group of parameters lets you configure the controller to suit your requirements. 7.6.1 Entering the Configuration sub-function 1) Enter Advanced Set-up mode. Press the ENTER key and scroll to Advanced Set-up security code “22”. Press the ENTER key again. 2) Press the ▲ or ▼ key to scroll until the upper display shows “ConF”. SETUP HOLD SETUP HOLD Ph SETUP SETUP HOLD HOLD Sy SETUP HOLD Ph Asy Sy Sy SETUP SETUP HOLD HOLD ASy mV mV ASy 7.6.
7.6.3 Selecting Alarm or Wash function This function allows you to use the Alarm relay as Wash contact. The Wash contact is used in combination with automatic cleaning systems. During the wash cycle, the analogue output is set on hold. SETUP 1) Follow direction in 7.6.1 to enter Configuration mode. 2) Press the ENTER key until upper display shows “Alr” or “CLn”. 3) Press the ▲ or ▼ key to choose the desired function. 4) Press the ENTER key to confirm your selection. HOLD SETUP HOLD 7.6.
7.6.6 Configuring the Wash contact if relay 3 has been set to the Wash mode SETUP HOLD SETUP HOLD SETUP HOLD 10.0 10 1) Follow direction in 7.6.1 to enter Configuration mode. 2) Press the ENTER key until upper display shows “Alr” or “CLn”. 3) Press the ▲ or ▼ key to select the “CLn” function. Press the ENTER key. 4) Press the ▲ or ▼ key to select the wash cycle (int. 0.1 to 199.9 hours) and press ENTER. 5) Press the ▲ or ▼ key to select the wash duration (1 to 1999 seconds) and press ENTER.
7.6.8 Reverting to factory default settings Use this parameter to reset all settings to factory default. 1) Follow directions in 7.6.1 to enter Configuration mode. SETUP 2) Press the ENTER key until the upper display shows “no”, “FCt” or “CAL”, and the lower display shows “deF” (default). HOLD 3) Press the ▲ or ▼ key to select “no” for using the old values, “FCt” to reset all settings to factory defaults or “CAL” to reset calibration values only to the factory default values.
8 AUTO/MANUAL MODE Regardless of the mode, you can control devices connected to Relay A or Relay B from the front panel of this controller. In Automatic mode, the controller’s set point values activate the relays. In Manual mode, you have manual control of the relays so you can prime the pump or check pump status without operating the entire system. 8.1 Auto mode (mode after switch-on) In this mode, the controller set-point values activate the relays.
9 TECHNICAL SPECIFICATIONS pH Range Resolution Relative Accuracy mV Range Resolution Relative Accuracy Temperature Resolution Relative Accuracy Sensor Temperature Compensation Set-point and Controller Functions Function (switchable) 0.00 to 14.00 pH 0.01 pH ± 0.01 pH 0 to 100.0% / -1000 to +1000 mV 0.1% / 1mV ± 1 mV - 9.9 to + 125.0 oC 0.1 oC ± 0.5 oC Pt 100 /Pt 1000 (jumper selectable) Auto / manual (reference at 25.
Mechanical Specifications Dimensions (control panel housing - L x H x W) Weights (control panel housing) Material Insulation (Front / Housing) 27 175 x 96 x 96 mm max. 0.
10 ACCESSORIES Replacement Unit Product Description Alpha-pH1000 pH/ORP Controller/Transmitter with 0/4-20 mA output and 110VAC Setting Alpha-pH1000 pH/ORP Controller/Transmitter with 0/4-20 mA output and 220VAC Setting Thermo Scientific Code no. TSPHCTP1001 Eutech Code no. ECPHCTP1001 TSPHCTP1002 ECPHCTP1002 Assembly Accessories Product Description Code no.
11 GENERAL INFORMATION 11.1 Warranty Thermo Scientific warrants this product to be free from significant deviations in material and workmanship for a period of one year from the date of purchase. If repair is necessary and has not been the result of abuse or misuse within the warranty period, please return by freight prepaid and amendment will be made without any charge. Our Customer Service Dept. will determine if product problem is due to deviations or customer abuse.
12 APPENDICES 12.1 Appendix 1 Before opening the unit, ENSURE that the power cable is physically separated from the power supply. Jumper Positions - Internal to the controller JP 1 JP 2 JP 3 Fuse Selects the input voltage 220 VAC. Selects the input voltage 110 VAC. Solder bridge selects between Pt100 and Pt1000. Note that there is a fuse (slow-blow 100mA) internal to the controller. Replace fuse with the recommended type only.
12.2 Appendix 2 The following table shows the various pH values at different temperature of the solution during calibration. Temperature (oC) 0 5 10 15 20 25 30 35 40 45 50 55 60 70 80 90 pH 1.00 0.96 0.99 0.99 0.99 1.00 1.01 1.01 1.01 1.01 1.01 1.01 1.01 1.02 1.02 1.02 1.02 pH 4.01 4.01 4.01 4.00 4.00 4.00 4.01 4.01 4.02 4.03 4.04 4.06 4.08 4.10 4.12 4.16 4.20 pH 6.86 6.98 6.95 6.92 6.90 6.88 6.86 6.85 6.84 6.84 6.83 6.83 6.83 6.84 6.85 6.86 6.88 31 pH 7.00 7.12 7.09 7.06 7.04 7.02 7.00 6.99 6.98 6.
12.3 Appendix 3 Simple Explanation on the Function of Hysteresis SP1 Set to LO SP2 Set to HI RELAY ON RELAY OFF 4.0 4.5 7.0 9.5 10.0 SP2 SP1 FORWARD DIRECTION HYSTERESIS BAND (DEFAULT = 0.5 pH) REVERSE DIRECTION The controller relay activates when the set-point is reached. In the reverse direction, it does not de-activate when the value reaches the set-point. Instead, it continues to be active till the value reaches the amount set by the Hysteresis band.
12.4 Appendix 4 General Instructions Concerning Controller Setting MIN function 100% MAX function Yh 50% 0% -Xw +Xw Xp Xp Prop. band Prop.
The output relay of the pulse length controller is clock-timed. The switching period T remains constant. Depending on the divergence from the limit value, the switch-on time tON is increased or decreased in accordance with the proportional range Xp. The following applies: tON + tOFF = T (Const.
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