Related Manuals for Ahlborn ALMEMO 2590-2A
Summary of Contents for Ahlborn ALMEMO 2590-2A
- Page 1 ____________________________ Operating instructions Universal measuring instruments and data loggers ® ALMEMO 2590-2A/-4AS V3.4 21.10.2021 www.ahlborn.com...
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Page 2: Operating Controls
OPERATING CONTROLS (1) Measuring inputs M0 to M3 depending on type) M0 ... M3 Suitable for all ALMEMO ® sensors M10 ... M34 up to 16 additional chann. (2) Output sockets A1, A2 A1 V24 interface (ZA 1909-DK5) Optic fiber (ZA 1909-DKL) USB (ZA 19019-DKU) Ethernet (ZA 1945-DK) RS 422 (ZA 5099-NVL/NVB) -
Page 3: Table Of Contents
CONTENTS Operating controls ................2 Contents ..................... 3 General ....................7 Warranty ..................... 7 Scope of delivery ................7 Waste disposal ................... 8 Safety instructions ................9 Special notes on use ................9 Handling batteries / rechargeable batteries correctly ...... 10 Introduction .................. - Page 4 2. Contents Data input ..................24 Keypad locking ................. 25 Menu selection ................. 26 Measuring menus ................27 11.1 Menu Sensor display ............... 27 11.1.1 Selecting a measuring point............. 27 11.2 Measured value correction and compensation ........ 27 11.2.1 Set measured value to zero ............. 28 11.2.2 Sensor adjustment for dynamic pressure probes ....
- Page 5 2. Contents 12.5.1 Internal data memory ............... 45 12.5.2 Memory connector with SD-card ..........45 12.5.3 Date and time-of-day ............... 46 12.5.4 Once-only output / saving of all measuring points ....46 12.5.5 Cyclic output / saving of all measuring points ......46 12.5.6 Numbering of measuring operations ........
- Page 6 2. Contents 14.2 Language ..................65 14.3 Illumination and contrast ..............65 14.4 Interface, device address, and networking ........66 14.5 Baud rate, Data format ..............66 14.6 Atmospheric pressure compensation temperature compensation ................... 66 14.7 Hysteresis ..................67 14.8 Operating parameters ..............
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Page 7: General
GENERAL Congratulations on your purchase of this new and innovative ALMEMO ® data logger. Thanks to the patented ALMEMO ® connector the device configures itself automatically and thanks to the menus and context-sensitive help windows its operation should be fairly straightforward. The device can, however, be used with such a wide range of sensors and peripherals and offers many different special functions. -
Page 8: Waste Disposal
3. General Waste disposal The pictogram showing a waste bin crossed through means that the product is subject to European Union regulations on segregated waste disposal. This applies both to the product itself and to any accessories marked with the same symbol. -
Page 9: Safety Instructions
SAFETY INSTRUCTIONS DANGER Danger to life and limb, risk of damage to equipment Read the instructions carefully before starting to operate the device. Please ensure that you comply with all general safety advice and the special safety instructions included in other chap- ters. -
Page 10: Handling Batteries / Rechargeable Batteries Correctly
4. Safety instructions there is a risk that condensation might form on the electronics. In meas- uring operations involving thermocouples pronounced changes in tem- perature may cause substantial measuring errors. You are advised therefore to wait until the device has adjusted to the ambient tempera- ture before starting to use it. -
Page 11: Introduction
INTRODUCTION The ALMEMO ® 2590A series is a new member in our family of unique measur- ing devices - all equipped with Ahlborn's patented ALMEMO ® connector sys- tem. The intelligent ALMEMO ® connector offers decisive advantages when con- necting sensors and peripherals because all parameters are stored in an EEPROM located on the connector itself;... - Page 12 5. Introduction 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 probes, infrared sensors, and flow transducers (rotating vanes, thermoanemometers, Pitot tubes).
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Page 13: Measuring Operations
5. Introduction 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 an alarm signal is output and relay output modules actuate the associated alarm contacts; these can be allocated individually to specific limit values. -
Page 14: Process Control
5. Introduction Maximum and minimum values For each measuring operation the maximum value and minimum value are ac- quired and saved to memory. These values can then be displayed, or deleted from memory. Average value Manual averaging is available per channel over a certain period or cycle or over a series of individual measuring operations. - Page 15 5. Introduction either manually or automatically per cycle. Standard memory capacity is 500KB - sufficient for up to 100,000 measured values. The memory can be organized and configured in linear or ring form. Output is via the interface. Selection can be specified according to a time interval or number.
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Page 16: Initial Commissioning
INITIAL COMMISSIONING Sensor connection Connect the sensor to any socket M0 to M3 (1); see Ch 8. via batteries or mains adapter to DC (3) ; see 7.1, 7.2 Power supply (6) ; see 7.5 To switch ON press the ON / PROG key Automatic display of last measuring menu see Ch 11. -
Page 17: Power Supply
POWER SUPPLY Power can be supplied to the measuring instrument in any of the following ways : 3 AA alkaline batteries (included in delivery) Mains adapter 12V, minimum 1A with ALMEMO connector ZA 1312-NAx ® Electrically isolated power supply cable (10 to 30 VDC, 0.25 A) ZA 2690-UK USB Data Cable Supply (9V, 0.2A) ZA-1919-DKUV... -
Page 18: Switching On / Off, Reinitialization
7. Power supply Switching ON / OFF, reinitialization To switch ON press key(s) : (6) located in the middle of the cursor PROGr block. The measuring menu most recently selected always appears first in the display. To switch OFF press and hold down the same key(s) . -
Page 19: Connecting The Sensors / Transducers
CONNECTING THE SENSORS / TRANS- DUCERS An die Any ALMEMO ® sensor can be connected to any of the input sockets M0 to M1/M2/M3 (1) (depending on device type) on the ALMEMO ® measuring in- strument. To connect your own existing sensors you simply need the appropriate ALMEMO ®... -
Page 20: Potential Separation
8. Connecting the sensors / transducers programmed by default as differential channel M1 – M0. This only applies, how- ever, if there are two sensors with the same units and same decimal point posi- tion connected at measuring points M0 and M1. The fourth (M32/M34, depend- ing on type) is used temporarily for the purposes of averaging (see 12.2). - Page 21 8. Connecting the sensors / transducers isolation. The voltage at the measuring inputs themselves must not exceed 5 volts (between B, C, D, A and - ). The power supply is isolated by the transformer in the mains adapter or by a DC/DC converter in connecting cable ZA2690-UK.
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Page 22: Display And Keypad
DISPLAY AND KEYPAD Display and menu selection The display (5) incorporated in the ALMEMO 2590A series consists of a dot matrix LCD display with 128x64 pixels, or 8 rows of 8 pixels each. Menu selection (see 10) provides the following : 3 measuring menus for acquiring measured values, Additional function... -
Page 23: Function Keys
9. Display and keypad flashes / flashes Sensor breakage / sensor voltage Lo : Display ´-.-.-´ Battery voltage <3.8 V, remaining capacity <10% flashes The data logger menus (see below) will also show in the menu's top status row the following symbols for checking the device status : Continuous measuring point scan Measuring operation stopped or started Measuring point scan started with data saving... -
Page 24: Function Selection
9. Display and keypad Function selection Each menu comprises a number of functions; these may have to be activated or programmed during operation. In conjunction with certain functions a context- sensitive help window will appear : e.g. To select functions press key(s) : PROG The first changeable parameter is highlighted in inverse font : 25.45... -
Page 25: Keypad Locking
9. Display and keypad When entering alphanumeric characters select the group : upper case characters by pressing key(s) : <ABC> upper case characters by pressing key(s) : < abc > numbers only by pressing key(s) : < 123 > arithmetic signs by pressing key(s) : <... -
Page 26: Menu Selection
MENU SELECTION Via menu selection (see 9.1) it is also possible to select3 measuring menus 1. M Sensor display see 11.1 2. M Measuring points list see 11.4 3. M U1 Data logger see 11.5, 11.6 plus 4. F Function menus see 12 and 3 programming menus : 5. -
Page 27: Measuring Menus
MEASURING MENUS In addition to the universal (see below) the sensor display measuring points (see 11.4) also offers a useful overview of all measuring channels in list menu combination with the most important data. Each measuring menu can, by means of function menus, be assigned various functions;... -
Page 28: Set Measured Value To Zero
11. Measuring menus Set measured value to zero 11.2.1 One very useful function is to zero the measured °C 23.4 value at certain locations or at certain times as a NiCr Temperatur reference value in order then to observe only the subsequent deviations. -
Page 29: Temperature Compensation
11. Measuring menus Probe Type Zero Gain point 4.00 pH or 10.00 pH pH probe ZA 9610-AKY: 7.00 Conductivity FY A641-LF: 2.77 mS/cm FY A641-LF2: 147.0 uS/cm FY A641-LF3: 111.8 mS/cm saturation FY A640-O2: 101 % probe FY A600-O2: 20.9 % in fresh air Two-point adjustment 1. -
Page 30: Atmospheric Pressure Compensation
11. Measuring menus If the temperature of the medium deviates from 25°C the following measuring errors must be considered : e.g. Errors per 10 °C Compensation range Sensor Dynamic pressure approx. 1.6% -50 to 700 °C NiCr-Ni pH probe approx. 3.3% 0 to 100 °C Ntc or Pt100 For temperature compensation of these sensors there are 2 possibilities :... -
Page 31: Cold Junction Compensation
11. Measuring menus mospheric pressure compensation can by means of ´#N´ in the des- ignation (see 13.2) be converted to standard conditions of 1013 mbar. Cold junction compensation 11.2.6 Cold junction compensation for thermocouples is normally performed automati- cally by means of an NTC sensor in measuring socket M2. This cold junction temperature is displayed in the device configuration as an operating parameter (see 14.8). -
Page 32: User Measuring Menu U1 Data Logger
11. Measuring menus functions by pressing key(s) <F> This reduces the maximum number of channels to 6. <F> To advance to the next function press key (s) Measured value with designation Meas points list designation 00: 23.12°C temperature Measured value with maximum value Meas points list Max. -
Page 33: User Menus
11. Measuring menus Measuring point selection The 1st measuring channel is always the selected measuring point. This can be selected directly as in any menu by means of To change the other channels, the measuring point PROG must be selected as function by pressing key(s) : ... -
Page 34: Functions
11. Measuring menus Functions 11.6.1 Functions Display Keys Com- mand Measured value - small 00: 234.5 °C Temperature ZERO o 15 00: 1234.5 °C Measured value - medium o 16 ZERO 3 rows Measured value - bar chart o 34 2 rows Limit value - maximum (see 13.5) Limit value max... -
Page 35: Menu Configuration
11. Measuring menus Locking (see 13.4) Locking level o 42 Atmospheric pressure (see 14.6) Atm pressure 1013 mbar o 43 Temp. compensation (see 11.2.4) Temp. comp. CT 25.0°C o 44 Setpoint (see 12.3) Setpoint 1100.0 °C o 45 Measuring time (see 12.2.3) Measuring time 00:00:000.00 o 46... -
Page 36: Function Menus
FUNCTION MENUS To manage individual tasks each measuring menu can be assigned a function menu from the adjacent list. For each measuring operation you can at any time toggle between measuring menu and function menu. To call up function menu selection in menu selection see 10 or in measuring menus and function menus press key(s) : <... -
Page 37: Averaging
12. Function menus Interface commands: response: store a measurement value: output of data storage: P-04 Memory: P01: 00: +022.12 °C P02: 00: +022.12 °C P03: 10: +0039.9 %H P04: 10: +0039.9 %H P05: 20: +0007.6 °C Clearing the memory: C-04 12.2 Averaging The average value for a measured value is needed for various applications e.g. -
Page 38: Averaging Over Individual Manual Meas Operations
12. Function menus 12.2.2) or for networked measuring (see 12.2.7). Measured value smoothing over e.g. 15 values : Smoothing: Continuous measuring point scanning should be disabled because this would at many measuring points Meas rate : 10 mops Cont : - reduce the measuring rate too strongly : Time constant (s) = smoothing / measuring rate ·... -
Page 39: Averaging Over Time
12. Function menus For flow probes call up the volume menu by pressing : see 12.2.6 <VOL ►> Averaging over time 12.2.3 To determine average values over a certain dura- tion there are 2 possibilities - either by pressing the Start and Stop keys accordingly or by entering a du- ration for averaging which is started manually but stops automatically. -
Page 40: Averaging Over Measuring Points
12. Function menus Program the cycle (see 12.5.5) and set cycle timer : 00:15:00 Un To set memory activation, output format : <MON/MOFF> <FORM> Start measuring operation, averaging runs : » <START> Verification : Stop measuring operation : <STOP> The average value of the last cycle can be read out : average value : 13.24 mls The average value is also output or saved in function channel M32/33/34 with the range M(t). -
Page 41: Array Measuring Option Vn
12. Function menus rectly from the average value menu by pressing VOL ►> This lists the following functions Cross-section calculation ready : Channel type Rectangular with width and depth, Channel type Tubular k:1.00 Tubular with diameter or diameter : 00175 mm Surface with cross-section : cross-section : 02345 cm²... - Page 42 12. Function menus ALMEMO - Flow array measuring Meas. device:;2590-4S VN;Serial no.:;H10120757;Calibration date :;01.01.2013 Sensor:;FDA602SK1;Serial no:;11070123;Calibration date :;01.01.2013 Measuring:;;File:;WH7.V02;meas. location:;Hall7; Creation:;;Date:;09.01.2013;Time:;14:50; Measuring:;;Date:;09.01.2013;Time:;15:37; Channel type:;rectangle/circle;Width/diameter mm:;200;Depth mm:;100 k-factor:;1;number of holes:;3;Number of meas. depths:;2 measuring points:;b1:33mm;b2: 100mm;b3: 166mm;b4;b5 ..t2: 75mm;24,0;34,6;25,6;; t2: 25mm;24,0;24,1;27,0;;...
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Page 43: Two-Point Adjustment With Setpoint Entry
12. Function menus To clear all measured values, if necessary, press key < CLRA > The average value of the array is displayed continuously: average val : 15.11 m¡ To cancel the measuring operation press key : < ESC > To proceed to the 3rd menu press key : <... -
Page 44: Scaling
12. Function menus Also enter known actual values in function : actual value 1: 0.4 2: 100.0 and calculate correction in function setpoint 2 by pressing : <ADJ> If the sensor is locked, a confirmation request will appear asking whether adjustment should indeed be performed. -
Page 45: Internal Data Memory
12. Function menus The device status can be checked by means of the appropriate symbols (see9.2) appearing in the top status bar of the menu. Internal data memory 12.5.1 Data loggers ALMEMO 2590-4AS incorporate an internal 500-KB EEPROM data memory, , sufficient for 60000 to 100000 measured values (depending on the number of channels). -
Page 46: Date And Time-Of-Day
12. Function menus automatically incremented by 1, e.g. . ´ALMEMO.002´. Similarly, if the file name entered already exists, then a new file will be created with the same file name prefix but with a new index. To check that the memory connector is functioning properly there is an LED incorporated in the end of the handle;... -
Page 47: Numbering Of Measuring Operations
12. Function menus can be entered directly (see 9.5). Once started the timer counts down to the next cycle. Function Cycle timer : 00:02:00 Cycle timer Cycle (hh:mm:ss), Saving ON, List format Switch memory activation ON / OFF by pressing : <MON/MOFF>... -
Page 48: Scanning Configuration
12. Function menus Memory free : 38.4 Function e.g.: Memory free To output the memory : <PMEM> To clear the memory : <CMEM> Using the keypad the contents of the measured value memory can only be out- put to the serial interface as a complete whole. Only by software can certain sections of the memory be specified for output - either by stipulating the start time and end time or by selecting the numbers defining the measuring opera- tions in question. - Page 49 12. Function menus Sleep : Internal cycle only, automatically switching off for long-term moni- toring Monitor : Internal cycle, not disturbed by computer scanning activity Fail-safe : Cyclic scanning by the PC; after any failure, internal cycle re- sumes Scanning mode function : Mode : Normal Set scanning mode by pressing : <SET>...
- Page 50 12. Function menus In the function Mode program the variant Monitor : Mode:Monitor Fail-safe mode: Fail-safe mode is suitable where purely software-based scanning is used merely to ensure in the event of computer failure that scanning continues on an internal cyclic basis.
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Page 51: Starting And Stopping Measuring Operations
12. Function menus after the other; (see Manual 6.5.1.3). This almost doubles the measuring rate / channel. In both modes all measured values can be saved and output at any time. With both the following functions continuous saving to memory and con- tinuous output of measured values can be activated at the measuring rate. - Page 52 12. Function menus be programmed. The total measuring time since starting can be seen in the func- tion Measuring time. This is assuming of course that the current time-of-day has been programmed. Sleep mode takes no account of end time or measuring duration. To select the menu press key : <...
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Page 53: Sensor Programming
SENSOR PROGRAMMING Since on ALMEMO ® devices all sensor programming is stored in the ALMEMO ® connector itself, the user will not normally need to reprogram each time. Pro- gramming will only be necessary e.g. if sensor errors are corrected, if your own sensors are scaled, or if certain limit values are stipulated;... -
Page 54: Averaging Mode
13. Sensor programming ´#J´ This means that a cold junction sensor is to be used in the connector for a thermocouple (e.g. connector ZA9400-FSx with Ntc); s. 11.2.6, Manual 6.7.3). ´*T´ This defines a temperature sensor (Ntc, Pt100) as reference for temperature compensation (see 11.2.4). -
Page 55: Scaling, Decimal Point Setting
13. Sensor programming way as exceeding a measuring range limit or as sensor breakage). In the dis- play, in front of the measured value affected, the appropriate arrow or ap- pears and the alarm relays connected by relay cable are triggered (see 15.2). Limit values can also have relays assigned to them (see 13.12.2). -
Page 56: Changing The Units
13. Sensor programming Function 4 Zero-point : -----°C Zero-point correction: 4 Gain : -----°C Gain correction: To switch on and off press : <OFF> <ON> Once the scaling values have been programmed and the actual measured value thus modified the correction arrow appears indicating the measured value status (see 9.2). - Page 57 13. Sensor programming Sensors / transducers Connector / Measuring range Units Display cable / sensor Pt100-1 ZA 9000-FS -200.0... +850.0 °C ITS90 P104 Pt100-2 ZA 9000-FS -200.00...+400.00 °C ITS90 P204 Pt1000-1 (Element flag 1) ZA 9000-FS -200.0... +850.0 °C ITS90 P104 Pt1000-2 (Element flag 1)
- Page 58 13. Sensor programming Rotating vane, micro 40 FV A915-S240 0.60... 40.00 S240 Rotating vane, macro FV A915-MA1 0.10... 20.00 L420 Water turbine, micro FV A915-WM1 0.00... 5.00 L605 Dyn. pressure 40 m/s with TC and PC FD A612-M1 0.50... 40.00 L840 Dyn.
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Page 59: Function Channels
13. Sensor programming Temperature, refrigerant R23 ° FDA602Lx -100.0...+26.0 °C FDA602Lx Temperature, refrigerant R134a ° -75.0...+101.0 °C R134 Temperature, refrigerant R404a ° FDA602Lx -60.0...+65.0 °C R404 FDA602Lx Temperature, refrigerant R407c ° -50.0...+86.0 °C R407 Temperature, refrigerant R410 ° FDA602Lx -70.0...+70.0 °C R410 FDA602Lx... -
Page 60: Special Meas. Ranges ,Linearization ,Multi-Point Calibration
13. Sensor programming A new feature is the presence of 4 device-internal channels. The first (M2/M4) is programmed by default as differential channel M1 – M0 (see 11.3), if two sensors with the same units and same decimal point position are connected at measuring points M0 and M1;... -
Page 61: Print Cycle Factor
13. Sensor programming after sensor programming by pressing key(s) : ... or < ►P > ► ... or To return to the last menu - back as far as menu selection : < P◄ > ◄ Print cycle factor 13.12.1 To adapt data recording to the speed of modification at individual measuring points a print cycle factor can be programmed to between 00 and 99;... -
Page 62: Analog Start And Analog End
13. Sensor programming Controlling a measuring operation The exceeding of a limit value can be used not only for reporting an alarm but also for controlling a measuring operation (see Manual 6.6.3). Commands can be assigned to a limit value by means of the functions : Action, maximum and Action, minimum Start measuring operation at limit value, maximum : 7 Action, max : Start... -
Page 63: Output Function
13. Sensor programming Output function 13.12.5 If the current measured value of the measuring point (Mxx) is not actually needed but only the maximum, minimum, average, or alarm value, this function can be programmed as output function (see Manual 6.10.4). Saving, analog output, and digital output will then only process the specified function value. -
Page 64: Element Flags
13. Sensor programming 1 Multiplexer: Measuring inputs B+ and A-, GND-referred 1 Multiplexer: Measuring inputs C+ and A-, GND-referred 1 Multiplexer: Measuring inputs D+ and A-, GND-referred 1 Multiplexer: Differential measuring inputs C+ and B- 1 Multiplexer: Differential measuring inputs D+ and B- Element flags 13.12.8 Element flags can be activated per measuring channel to implement additional... -
Page 65: Device Configuration
INFO menu, in the print header for a measuring operation, and in device lists (software). Device designation : Function Device designation : Ahlborn, Holzkirchen 14.2 Language The user can choose between German / English / French as the language for function labeling; (other languages are available on request). The softkeys are international;... -
Page 66: Interface, Device Address, And Networking
14. Device configuration 14.4 Interface, device address, and networking Via the serial interface you can output cyclic data logs, all function values from the measuring menus, and all the programming details for the de- vice and for the sensors to a computer (see Man- ual, Ch 6). -
Page 67: Hysteresis
14. Device configuration 14.7 Hysteresis The hysteresis for an alarm triggered in the event of a limit value being exceeded can be set generally for all sensors from 0 to 99 digits (default 10 digits) in the Hysteresis function (see 13.5 and Manual 6.2.7). Hysteresis : To modify hysteresis (0 ... -
Page 68: Output Modules
OUTPUT MODULES ® The ALMEMO 2590A measuring instrument has two output sockets A1 and A2; these can output meas- ured values in either analog or digital form or as an alarm signal. It is also possible to initiate various functions by means of trigger pulses. To cover all possibilities while also keeping the hardware to a minimum all necessary interfaces have been inte- ®... - Page 69 15. Output modules In the menu OUTPUT MODULES the elements of the output modules can be individually selected and functions programmed as follows : First select the port by pressing : <P> ▲ ▼ e.g. port 0 at socket A2 (port address 20): Port: 20 Relay The element concerned is recognized :...
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Page 70: Analog Outputs
15. Output modules The following trigger functions can be programmed as variants : 0: Start - Stop 0: Start / stop a measuring operation 1: Once-only scan 1: Once-only manual measuring point scan 2: Clear max and min values 2: Clear all maximum values and min values 3: Print 3: Print measured value 4: Start / stop a measuring operation on level-controlled basis... - Page 71 15. Output modules To select the port press key(s) : <P> ▲ ▼ e.g. port 6 at socket A2 (port address 26): Port: 26 The analog module appears with type and output signal 10V or 20mA: Analog output (D/A converter external in module) : Analog output external 10V Reprogrammable via keys : Analog output internal 20mA...
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Page 72: Trouble-Shooting
TROUBLE-SHOOTING The ALMEMO ® 2590A measuring instrument can be configured and pro- grammed in many versatile ways. It is suitable for connecting a wide variety of different sensors, additional measuring instruments, alarm signaling devices, and peripheral equipment. Given these numerous possibilities the device may in certain circumstances not behave quite as expected. - Page 73 16. Trouble-shooting Error: Data transmission in the network does not function. Remedy: Check to ensure that all devices are set to different addresses. Ad- dress all devices individually via the terminal using command ´Gxy´. Addressed device is OK if at least ´y CR LF´ is returned as echo. If transmission is still not possible, unplug the networked devices.
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Page 74: Declaration Of Conformity
DECLARATION OF CONFORMITY... -
Page 75: Appendix
APPENDIX (see Manual 2.3) 18.1 Technical data Measuring inputs : 2590-2A/4AS ® ® 2/4 ALMEMO sockets for ALMEMO connectors Measuring channels : primary channels, electrically isolated, 3 additional channels per input for double sensors and function channels A/D converter : Delta-sigma, 16-bit, 2.5/10mops, Reinforcement 1.38 Sensor power supply : 6V/9V12V, 0.4A (with mains adapter : 12 V) -
Page 76: Product Overview
18. Appendix 18.2 Product overview Universal measuring instrument with data logger function ALMEMO ® 2590-2A Order no. 2 inputs, maximum 12 channels, 2 outputs, cascadable interface, 7 keys, LCD graphics display, real-time clock MA 2590-2A Universal measuring instrument and data logger ALMEMO ®... -
Page 77: Index
INDEX Accessories ........ 76 continuous measuring point scan Action, maximum Action, ........... 50 minimum ........62 contrast ........65 Actions in the event of a limit value control value ....... 44 being exceeded......61 conversion rate ......50 activation mode ......69 Correction values ....... - Page 78 Index Hysteresis ........67 OFF ..........22 illumination ......... 22 ON ..........22 Illumination ......... 65 Once-only output ......46 Initial commissioning ....16 Operating parameters ....67 Interface ........66 Options ........76 Internal data memory ....45 Order no........76 Introduction .........
- Page 79 Index Sensor supply ......17 switch OFF ......... 18 sensor supply voltage ....62 Switching ON / OFF ....18 Sensor voltage, min ....62 Technical data ......75 Sensors / transducers ....19 temperature compensation ..66 Set measured value to zero ..28 Temperature compensation..
- Page 80 Your contact AHLBORN Mess- und Regelungstechnik GmbH Eichenfeldstraße 1 83607 Holzkirchen Germany internet : http://www.ahlborn.com e-mail : amr@ahlborn.com Despite great care, incorrect information cannot be ruled out. Technical changes are reserved.