Operating instructions Multifunction measuring instrument ALMEMO® 2390-5 with data logger option V1.3 10.10.
Table of contents Operating instructions Multi-function measuring instrument ALMEMO® 2390-5 with data logger option With supplementary reference to the ALMEMO® Manual Table of contents Page 1 1.1 1.2 2 3 3.1 3.2 3.3 3.4 4 4.1 4.2 5 5.1 5.2 5.3 5.4 6 6.1 6.1.1 6.1.2 6.1.3 6.2 6.2.1 6.2.2 6.2.3 6.2.4 6.2.
Table of contents 6.2.6 6.3 6.3.1 6.3.2 6.3.3 6.3.4 6.4 6.4.1 6.4.2 6.4.3 6.4.4 6.4.5 6.4.6 6.4.7 6.5 6.5.1 6.5.2 6.5.3 6.5.4 7 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.7.1 8 8.1 9 9.1 9.2 9.
Functions 1. INTRODUCTION The multi-function measuring instrument ALMEMO® 2390-5 is a new member in our family of unique measuring devices - all equipped with Ahlborn GmbH’s patented ALMEMO® connector system. The intelligent ALMEMO® connector offers decisive advantages when connecting sensors and peripherals because all parameters are stored in an EEPROM on the connector itself; repeat programming is thus no longer necessary.
Functions SENSOR PROGRAMMING The measuring channels are automatically programmed via the ALMEMO® sensor connectors. However, the user can easily supplement or modify this programming via the keypad or via the interface. Measuring ranges Appropriate measuring ranges are available for all sensors with a non-linear characteristic, e.g. 10 thermocouple types, Ntc and Pt100 sensors, infrared sensors, and flow sensors (rotating vanes, thermoanemometers, Pitot tubes).
Functions Limit values and alarm Per measuring channel two limit values can be set (1 maximum and 1 minimum). In the event of one of these limit values being exceeded relay output modules actuate the appropriate alarm contacts. Hysteresis is set by default to 10 digits but can also be adjusted. The exceeding of a limit value can also be used to start or stop measured value recording and data logging.
Functions Volume flow measurement For all flow sensors not only the functions for averaging are provided but also functions for entering the cross-section and diameter of ventilating channels and for calculating the volume flow. The average flow velocity can be determined roughly by scanning the whole cross-section or exactly by means of network measurements according to DIN. For dynamic pressure probes both temperature compensation and atmospheric pressure compensation are provided.
Functions automatically according to date and time-of-day. The memory can be organized and configured in linear or ring form. As an alternative storage medium external ALMEMO® connectors are also available with an EEPROM of either 128 KB capacity (sufficient for 25000 measured values) or 256 KB capacity (sufficient for 50000 measured values). Data recordings can be easily and conveniently managed for each such connector and read out from the computer whenever needed via a separate read interface.
Operating controls 1.2 Operating controls (1) ON/OFF-switch (2) (1) up down (3) ON OFF (2) Measuring inputs M0, M1, M2 (4) M0, M1, M2 for all ALMEMO-sensors M3 Function channel differential M10 ..
Operating controls (6) FUNCTION KEYS ▲ PROG, +/-, ▲ ▼, PROG, CLEAR PROG, ▼, PROG M▲ START/STOP MANU/PRINT FUNCTION Input of programming parameters Clear data, set measured value to zero Adjust measured value Select measured value, measuring point Start and stop a measuring operation Manual measuring point scan, data output Select function(s) Maximum value (Hi) MH Minimum value (Lo) ML Functions are activated by: All functions are activated by FUNKTION pressing and holding down the FUNCTION key; each fu
Putting into service 2. PUTTING INTO SERVICE 1. Connect transducer to sockets M0 to M2 (2); (see Section 4). 2. Ensure that the power supply is provided via 9-volt battery or mains adapter; (see Sections 3.1, 3.2). 3. To switch ON, push slide switch (1) located on left side of device upwards; (see Section 3.3). 4. Displaying the measured values Select MEASURED VALUE function by pressing the key M▲ (6). Select measuring channels by pressing key M▲ and read out measured values; (see Section 6.1.1). 5.
Power supply 3. POWER SUPPLY As power supply for the measuring instrument there are the following possibilities: 9-volt batteries IEC 6F22 ZB 2000-B9 9-volt rechargeable battery pack, same with charger integrated in the connector ZB 2000-A9, ZB 2000-LS mains adapter 12 V / 200 mA ZB 2290-NA external power supply, connecting cable ZB 2290-UK Our product spectrum includes all the appropriate accessories. 3.1 Battery / rechargeable battery operation Use only alkaline-manganese batteries, type IEC 6F22.
Power supply Tips on how to handle batteries correctly: Never leave used dead batteries in the device ! If the device is likely to be unused for a relatively long time, remove the batteries ! A leaking battery represents a health hazard and may also destroy the device. Use only leak-proof batteries ! Spent batteries are classified as special waste and must be disposed of in an environmentally acceptable way.
Power supply 3.3 Switching ON / OFF, retaining stored data, reinitialization The ON / OFF slide switch (1) located on the left side of the device has two switch positions : To switch ON, push the slide switch (1) located on the left side of the device upwards. - up : ON To switch OFF, push the slide switch down - down : OFF Retaining stored data When the device is switched off, all sensor parameters and most device parameters remain stored in EEPROMs.
Connecting the transducer 4. CONNECTING THE TRANSDUCERS Virtually any ALMEMO® sensor can be connected to any of the ALMEMO® input sockets M0 to M2 (2). To connect your own existing sensors you simply need the appropriate ALMEMO® connector. 4.1 Transducers The ALMEMO® Manual includes detailed descriptions of the comprehensive range of ALMEMO® sensors (see Manual, Chapter 3) and of how to connect your own existing sensors to ALMEMO® instruments (see Manual, Chapter 4).
Connecting the transducer same decimal point position connected at measuring points M0 and M1. However, all four channels can be programmed with any other function channels (e.g. U-Bat, VK, average, volume flow, etc.); (see Manual, Section 6.3.4). As reference channels for M3 by default Mb1=M1 and Mb2=M0 are always used; the others refer to M3 (see Section 7.7).
Display and keypad 5. DISPLAY AND KEYPAD 5.1 Display The display (5) on measuring instrument ALMEMO 2390-5 comprises an LCD with 6½ x 7-segment characters, two 16-segment characters, a battery symbol, and seven arrows to indicate the operating status. CORR M START MEM COM ALARM F BAT 3 M MIN SEC 2 DIM/F Measured value display The first thing to appear after switching ON is the measured value display with measuring point (M) and units (DIM) as used for the channel most recently selected.
Display and keypad Special operating states Segment test for display Voltage supply: This is performed automatically each time the device is switched ON.
Display and keypad 5.2 Function selection and activation Measuring instrument ALMEMO 2390-5 provides a wide variety of functions for controlling measuring sequences, for acquiring, averaging, monitoring, and saving measured values, for outputting data to various peripheral equipment, and for scaling, adjusting, and correcting sensors, etc.. Since these functions will not be needed by the normal user all at once, they can be activated in various ways on an application-specific basis.
Display and keypad Funktions Temp. compensation Value Abbrev. 1: 023.4 TC Memory free (option S) 01:113.2 MF Cycle 00:15:00 CY Time of day 12:34:56 TM 01.12.99 DA Date Start time (option S) 10:00:00 ST Start date (option S) End time (option S) 17:00:00 ET End date (option S) 02.10.
Display and keypad Language setting The function abbreviations can be shown in any one of three languages. You can switch between languages in theDISPLAYMODE ´DM´ function, which can be activated as and when necessary by holding down the FUNCTION key the first time it is pressed; (see above). Display mode function: Enter with PROG, PROG, ▲▼..
Display and keypad 5.4 Data input Numeric parameters are programmed as follows : FUNCTION Select the desired function by pressing the FUNCTION key Start programming by pressing the PROG key. The front digit flashes and can now be changed. PROG Increment the digit by pressing the ▲ key . If you overshoot the highest value, you start again at zero. Decrement the digit by pressing the ▼ key. If you go below zero, you start again at the highest value (9 or 5)..
Measuring operations 6. MEASURING OPERATIONS Measuring instrument ALMEMO 2390-5 provides the following options for measured data acquisition : 1. Semi-continuous measuring point scanning of all active measuring points (see Section 6.1) Representation of a selectable measuring point in the display Measured value output to an analog output (see Chapter 8). 2. Once-only measuring point scan and output (s. Sec. 6.3.1; Man., Sec. 6.5.1.1) 3. Cyclic measuring point scan and output;(see Sec. 6.3.2; Manual, Sec.
Measuring operations 6.1.2 Differential measurement If there are two sensors with the same units and same decimal point position connected at measuring points M0 and M1, the difference M1 - M0 appears automatically below measuring point M3. The sensors are electrically isolated by means of photovoltaic relays. If the differential channel is not required, it must be deleted.
Measuring operations 6.2.1 Setting the measured value to zero, It is possible - a very useful function - to zero the measured value at certain locations or at certain times in order then to observe the deviation from this reference value. This function can be activated in the MEASURED VALUE function by means of the following key combination : PROG Zero-setting by pressing keys: 1: `0 0 0.0´CL , CLEAR When the PROG key is pressed in function ´CL´ the measured value 000.
Measuring operations In the ´AJ´ function the measured value appears in the display, initially flashing; this should be the measured value expected after adjustment, i.e. either the normal 0.0 or a scaled value, e.g. 7.00 for pH probes. So long as the corrected measured value is shown (rather than the actual measured value), the CORR arrow appears in the display. If only an ´A´ appears as function, this means that the zero-point correction function is locked at level 4 or above; (see Section 7.2).
Measuring operations 6.2.3 Entering a setpoint A setpoint can be entered in much the same way as gain adjustment (described in the previous section). If you save defined calibration values other than the zero-point, you can, by entering the setpoint, automatically correct or scale a measured value. On ALMEMO force transducers an appropriate calibration resistance can be selected for the purposes of final value correction.
Measuring operations used for all thermocouple types; however, they require two measuring channels. ´#J´ is programmed in the comments; this ensures that the temperature sensor integrated in the connector is used for cold junction compensation. 6.2.5 Atmospheric pressure compensation Some measured variables depend on the ambient atmospheric pressure (see Section 7.7, measuring range list ´with PC´) with the effect that pronounced deviations from normal pressure (1013 mbar) may lead to measuring errors. e.
Measuring operations FUNCTION Select by pressing key ... 1: 1 8 0.0 Enter °C s. Sec. 5.4 TK 6.3 Measuring point scans and data output Measuring point scans can be used to acquire and then evaluate data from all active measuring points at particular times (for the purposes e.g. of averaging, outputting to the interface, or saving to memory). A measuring point scan can be initiated at any time-of-day either manually or automatically by a cycle. If a peripheral device (e.g.
Measuring operations The cyclic measuring operation is started by pressing theSTART/STOP key; the ´START´ arrow should light up continuously. If a peripheral device is connected, the measured values are output cyclically and the ´COM´ arrow should appear. There is a wide variety of output formats available (see Section 6.3.3). For the associated printouts please refer to the Manual Section 6.6.1.
Measuring operations 6.3.4 Manual data output In all functions selected by pressing the FUNCTION key, the function values can, by pressing the MANU/PRINT key, be output to a printer or computer, partly as tables and with the following printout formats : Function Abb Printout MAXIMUM VALUE MH MAXIMUM: 01: +0020.0 °C MINIMUM VALUE ML MINIMUM: 01: -0010.0 °C AVERAGE VALUE AV AVERAGE VAL: 01: +0017.8 °C C CH MEAS.VAL MAXIMUM MINIMUM AVG.VAL COUNT COUNT 01: +0023.0 +0025.0 +0019.0 +0022.0 99999 s. Hb. 6.4.
Measuring operations 6.4 Averaging The average value of the measured value is required for various applications : e.g. the average flow velocity in a ventilation channel smoothing of a widely fluctuating measured value (e.g. wind, pressure etc.) hourly or daily average values of weather data (temperature, wind etc.) as above, for consumption values (current, water, gas, etc.
Measuring operations If a sensor with an ALMEMO® connector is connected, the following modes can be set by pressing keys PROG, ▲ ▼, PROG : Function Display No averaging: - - - Continuous averaging from start to stop (see 6.4.3) or over single measurements, if not started (see 6.4.4): C o n t Averaging over each cycle (see 6.4.6): C Y C L Averaging has become much more straightforward and effective compared with previous models - thanks to the following measures. 1.
Measuring operations Section 3.5.5) or for a whole measuring operation (also with cyclic scanning), the averaging mode to be set is ´Cont´ (see Section 6.4.2). 1. Select the AVERAGE VALUE function ´MW´ by pressing the FUNCTION key. The averaging start and stop can if necessary also be selected in any other function (e.g. MEASURED VALUE)! 2. Start averaging by pressing the START/STOP key The average value is automatically deleted with 1: 1 1.
Measuring operations 6.4.5 Volume flow measurement To determine the volume flow VF in ventilating channels multiply average flow velocity v̄ by cross-section area CS.: VF = v̄ . CS . 0.36 VF = m3/h, v̄ = m/s, CS = cm2 For approximate air volume measurements at air vents and gratings the average flow velocity can be determined by means of time-based averaging.
Measuring operations Entering the cross-section The cross-section area CS can be entered in the ´Flow´ channel either directly in the ´CS´ function up to a maximum of 32000 cm2 or as diameter in the ´DN´ function up to a maximum of 2000 mm; (see Section 5.4). When the function channel ´Flow´ is selected both these functions are activated automatically. CROSS-SECTION AREA function ´CS´ Select the FUNCTION key .... Enter cm2 (s 5.4) 11: 0 1 7 5.CS DIAMETER function ´DN´ Select the FUNCTION key...
Measuring operations 6.4.7 Averaging over several measuring points To determine the average value over several measuring points from Mb2 to Mb1 at the same time, function channel ´M(n)´ is available. By programming this function channel (e.g.
Measuring operations re, and evaluated by computer over a read interface (ZA 1409-SLG0) on a completely device-independent basis. Old read cable ZA 1409-SLK does not support operation with a ring memory configuration; i.e. it cannot be used to read out measured data saved to ring memory. If you wish to continue using this cable please be sure to have switched ring memory mode off. However, the new readers ZA1409-SLG / SLG0 with effect from version V2 can be used to evaluate all recorded data.
Measuring operations Starting and stopping with start date and time-of-day, and end date and time-of-day A measuring series can be started and stopped automatically at specified times. The start date and time-of-day and end date and time-of-day can be freely programmed - providing these functions have been activated (see Section 5.2). If no particular date has been programmed, the measuring operation will be performed every day within the set period. The current time-of-day must have been programmed.
Measuring operations Delete memory When the PROG key is pressed, the symbol ´SClr´ starts flashing. Only if you now press the Clear key will the memory content be deleted PROG delete memory by pressing the key: `S C L r´SF , CLEAR 6.5.4 Sleep mode For long-term monitoring with more prolonged cycles (i.e. longer than two minutes) the measuring instrument can be operated in sleep mode.
Sensor programming 7. SENSOR PROGRAMMING Since on ALMEMO® devices all sensor programming is stored in the ALMEMO® connector, the user will not normally need to reprogram. Programming will only be necessary e.g. if sensor errors are corrected, if your own sensors are scaled, or if certain limit values are stipulated; in these circumstances there are comprehensive programming functions available.
Sensor programming Locking mode function ´LM´ FUNCTION Select by pressing key: ... Enter as per Sec. 5.4 1:0 0 0 5 LM In the display, in front of the locking mode, you should see output function, element flags and multiplexer position - assuming these have been programmed (see Manual, Section 6.10.2/3/4). These can be programmed by pressing and holding down the PROG key. 7.3 Limit values Two limit values (MAX and MIN) can be programmed per measuring channel.
Sensor programming 7.5 Scaling, decimal point setting To display the electrical signal of a sensor as measured value in its physical size, it is nearly always necessary to perform decimal point shift, zero-point correction, and multiplication with a factor. To perform these steps the functions EXPONENT ´EX´, BASIS ´BA´, and FACTOR ´FA´ are provided. For a detailed description of scaling, with an example, please refer to the Manual, Section 6.3.11.
Sensor programming All upper-case and lower-case letters, special characters °, °, Ω, %, [, ], *, -, =, ~, and space (_) can be used. The units are shown as two 16-segment characters after the measured value or programming value. To modify the units go to the menu (see Section 6.2) in the MEASURED VALUE function and press the keys PROG and then ▲; this will only work if the lokking mode is set to lower than level 4 (see Section 7.2).
Sensor programming range appears in the display, programming can be completed by pressing the PROG key again and this data is transferred and saved to the connector. All programming values for this measuring point are deleted. RANGE function ´R´ FUNCTION Select by pressing key: 1: N i C r ... Example : Channel M1, range NiCr-Ni PROG PROG modify the meas. range: , ...
Sensor programming Sensor / connector Measuring range Units Transducer Ohms Ohm ++ Frequency Pulses Digital input Digital interface Infrared 1 Infrared 2 Infrared 3 Infrared 4 Infrared 6 Snap-on head, normal 20 Snap-on head, normal 40 Snap-on head, micro 20 Snap-on head, micro 40 Macro Water micro Dyn. press., 40 m/s TC and PC Dyn. press., 90 m/s TC and PC Flow sensor SS20 ++ Rel. air humidity, capacitive Rel. air humidity, capacitive, TC Rel.
Sensor programming Transducer Average val. M(n) of Mb2 to Mb1 Sum S(n) of Mb2 to Mb1 Total pulses S(t) of Mb1 Pulses / print cycle of Mb1 Alarm value of channel Mb1 Therm. coeff. M(Mb1)/M(M03) Wet bulb globe temperature Measured value of Mb1 Cold junction temperature Number of averaged val. of Mb1 Volume flow m3/h M(Mb1) * Q Temp. for Refrigerant R22 ° Temp. for Refrigerant R23 ° Temp. for Refrigerant R134 ° Temp. for Refrigerant R404 ° Temp. for Refrigerant R407 ° Temp. for Refrigerant R410 ° Temp.
Analog output The measured value is then no longer displayed, scanned, and output but the programming is retained intact. Reactivating the measuring channel: PROG PROG Function: RANGE ´R´ keys : , If the channel was previously deactivated, then it is now reactivated with all programming values intact. However, if the channel is already active, then with this key combination all its programming values are deleted (i.e. as per selecting the measuring range). 7.7.1 Special meas.
Device programming 8. ANALOG OUTPUT For the analog registration of the selected measuring point you can, to sockets A1 or A2, connect either an analog output cable ZA 1601-RK (see Manual, Section 5.1.1) without electrical isolation or a relay trigger analog adapter ZA 8000-RTA (see Manual, Section 5.1.3) with electrically isolated analog output. 8.
Device programming 9. DEVICE PROGRAMMING All sensor parameters are saved in the sensor connector; certain other parameters are stored in the device itself. These include the real-time clock and date, scanning cycle and output format (see Sections 6.3.2/3), device address (see Section 9.3), atmospheric pressure (see Section 6.2.5), and user interface language (see Section 5.2); they also include the device designation (see Manual, Section 6.2.4), and hysteresis (see Manual, Section 6.2.7).
Trouble shooting interface module !). BAUD RATE function ´BR´ U n 9 6 0 0 BR Select by pressing key FUNCTION.. Example: Output to interface ´U´, in ´side-by-side´ format, 9600 baud To enter this information press thePROG key twice, then set the baud rate by means of the ▲ and ▼ keys, and then program by pressing thePROG key once more. The baud rate is saved to the EEPROM in the interface module and thus applies whenever any other ALMEMO® device is used.
Electromagnetic compatibility 10. TROUBLE - SHOOTING ALMEMO 2390-5 measuring instruments can be configured and programmed in many versatile ways. These measuring instruments are suitable for connecting a wide variety of very different sensors, additional measuring instruments, alarm signaling devices, and peripheral equipment. Given these numerous possibilities the devices may in certain circumstances not behave quite as expected.
Technical data Test data transmission by means of a terminal (AMR-Control, WINControl, WINDOWS-Terminal) : Address the device using its assigned device number Gxy (see Manual, Section 6.2.1), Check the programming by means of P15 (see Manual, Section 6.2.3), Test the transmit line by entering a cycle with command ´Z123456´ and check in the display. Test the receive line by pressing the MANU/PRINT key and check in the display Error : Data transmission in the network does not function.
Product overview Technical data (s.a. Hb. 2.2) Measuring inputs : Channels : A/D converter : Sensor power supply : Outputs : Equipment Display : Keypad : Date and time-of-day : Memory (option S): Microprocessor : Power supply : Mains adapter : Three ALMEMO® sockets for ALMEMO® flat connectors 4 channels / sensor maximum (measuring and function channels, depending on sensor type) 4 function channels in device delta - sigma, 16-bit, 2.5 / 10 meas. per second Battery : 7 to 9 V, max.
Index Product overview Order No. Multi-function measuring instrument ALMEMO 2390-5 3 inputs, maximum 16 channels, 5 keys, cascadable interface Option S : Measured value memory 32-KB, internal or external on memory connector Option R: 8 measuring ranges for refrigerants Option L: linearization,multi-point calibration Option H : Adapter for top-hat rail mounting Accessories ALMEMO® memory connector with 128-KB EEPROM (approx. 25000 measured values) ALMEMO® memory connector with 256-KB EEPROM (approx.
Index INDEX Keyword Additional channels Analog output - start / end Atmospheric pressure compensation Averaging Averaging mode Averaging over cyclic measuring point scans Averaging over manual single measurements Averaging over several measuring points Averaging over time Base value Baud rate Changing the units Clearing the memory Cold junction compensation CONNECTING THE TRANSDUCERS Contact partners Continuous measuring point scan Control characters Correction of measured values Correction values Cross-se
Index Keyword Element flags Exponent External voltage supply Factor Final value adjustment of force transducers Function abbreviations Function activation Function display Function keys Function printouts Function selection Functions Gain adjustment Gain correction Hysteresis INTRODUCTION KEYPAD Language setting Limit values Locking, sensor programming Mains operation Maximum and minimum value memories Measured value data memory Measured value output Measured value recording Measured value recording, end da
Appendix Keyword Output function POWER SUPPLY Print cycle factor Product overview PUTTING INTO SERVICE Rechargeable battery operation : Reference channels Reinitialization Representatives Reset Retaining stored data Saving all measuring points, cyclic Saving all measuring points, manually, once-only Scaling, analog output Scaling, measured value Selecting the input channel Selecting the measuring point Selecting the measuring range Sensor adjustment SENSOR PROGRAMMING Sensor supply voltage Service address S
Appendix Your contact partners ALMEMO 2390-5 59
Appendix 60 ALMEMO 2390-5
