Ahlborn ALMEMO 2290-8 Operating Instructions Manual
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Ahlborn ALMEMO 2290-8 Operating Instructions Manual

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Operating Instructions
Data Logger
®
ALMEMO
2290-8
V2.1
04.12.2003
®
ALMEMO
2290-8
1

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  • Page 1 Operating Instructions Data Logger ® ALMEMO 2290-8 V2.1 04.12.2003 ® ALMEMO 2290-8...

  • Page 2: Table Of Contents

    Table of Contents Operating Instructions Data Logger ® ALMEMO 2290-8 ® For reference with the ALMEMO Manual Table of Contents Page INTRODUCTION Function Range Operating Controls INITIAL OPERATION POWER SUPPLY Operation with Battery and Rechargeable Battery External Voltage Supply Switch On/Off, Reinitialisation Battery Buffer CONNECTION OF THE TRANSDUCERS Transducers...
  • Page 3 Table of Contents Page Correction Values Scaling, Decimal Point Setting Locking the Programming of the Sensor MEASUREMENT Continuous Measurement of a Measuring Point 7.1.1 Selecting the Measuring Point 7.1.2 Memory for Peak Values 7.1.3 Averaging 7.1.4 Setting the Measured Value to Zero, Zero Point Correction 7.1.5 Atmospheric Pressure Compensation Single Measuring Point Scan...

  • Page 4: Introduction

    ® ALMEMO connector system, which has been patented by Ahlborn GmbH. The ® intelligent ALMEMO connector provides important advantages with regard to the connection of sensors and peripherals as all parameters are stored in an EEPROM within the connector.
  • Page 5 Functions Measuring Ranges There are corresponding measuring ranges for sensors with a non-linear characteristic such as 10 thermocouple types, Ntc and Pt100 sensors, infrared sensors, and flow sensors (rotating vanes, thermoanemometers, pitot tubes). Humidity sensors are available with function channels that also calculate humidity data such as dew point, mixture ratio, vapour pressure and enthalpy.
  • Page 6 Functions Limit Values and Alarm Two limit values (1 max and 1 min) can be set for each measuring channel. An alarm value printout can be performed if a limit value is exceeded and, by means of relay output modules, alarm contacts are provided that can be individually allocated to limit values.
  • Page 7 Functions Average Value of a Channel A manual averaging over a particular period or over single measurements is available for the selected channel. PROCESS FLOW PROGRAMMING A cyclic measuring point scan with a time-based process flow control is required to register the measuring data of all connected sensors. For this purpose, the real time clock, the print cycle and the measuring cycle are available and, if fast processing is required, the conversion rate is available.
  • Page 8 Functions Storage of Measured Values During the measuring or print cycle, all measured values or alarm values can be manually or automatically stored in a buffered RAM. The memory capacity is, as standard, 500kB, which allows up to 100,000 measured values. The memory organisation can be configured as linear or ring memory.

  • Page 9: Operating Controls

    Operating Controls 1.2 Operating Controls (1) ON/OFF switch ( 3 ) SLEEP centre down 2290-8 (2) Measuring Inputs CH0 to CH4 ® CH0 to CH4 for all ALMEMO sensor CH5 to CH19additional channels (3) Output Sockets OUT1, OUT2 OUT1 Interface RS232 (ZA 1909-DK5) Fiber Optics RS232 (ZA 1909-DKL) Ethernet (ZA 1945-DK) Centronics (ZA 1936-DK)
  • Page 10 Operating Controls ENTER START/STOP OUTPUT (2) FUNCTION KEYS ± CLEAR ▲ ▼, ENTER, ± for entering programming values ENTER, CLEAR clear data, set meas. value to zero ENTER, ± calibrate measured value ▲ select measuring point START/STOP cyclic measuring point scan OUTPUT data output to interface single measuring point scan...

  • Page 11: Initial Operation

    Initial Operation 2. INITIAL OPERATION 1. Connect transducers in the correct order to the sockets CH0 to CH4, see 4. 2. Ensure power supply with 9V battery or mains adapter, see 3.1, 3.2. 3. For switching on move the slide switch (1) on the left side of the unit to the centre position, see 3.3.

  • Page 12: Power Supply

    Power Supply 3. POWER SUPPLY The following options are available for the power supply of the instrument: 9V battery IEC 6 F22 ZB 2000-B9 9V rechargeable battery, as above with charger unit integrated in plug ZB 2000-A9, ZB 2000-LS Mains adapter 12V/200mA ZB 2290-NA External power supply, connecting cable ZB 2290-UK...

  • Page 13: External Voltage Supply

    Power Supply Tips regarding correct handling of batteries: Do not leave used batteries in the instrument! Remove batteries from the instrument if it is not used for a long period. Risk to health and instrument failure can result from leaking batteries! Therefore, only use leak-proof batteries.

  • Page 14: Switch On/Off, Reinitialisation

    Power Supply 3.3 Switch On/Off, Reinitialisation The ON/OFF switch (1) on the left side of the device has three positions: ON sleep mode centre: ON normal mode down: To switch-on the active measuring mode the slide switch (1) on the left side must be moved one step upwards (centre position).

  • Page 15: Connection Of The Transducers

    Connection of the Transducers 4. CONNECTION OF THE TRANSDUCERS ® ® Any ALMEMO sensors can be connected to the ALMEMO input sockets CH0 to CH4 of the measuring instrument (2). For connecting existing sensors it is ® only necessary to connect a corresponding ALMEMO connector.
  • Page 16 Connection of the Transducers The 5 analogue inputs are electrically isolated by using photovoltaic relays and a potential difference of 50V DC or 60V AC, at maximum, is permissible between them. However, sensors combined within one connector and sensors with an own power supply are electrically connected to each other and must, therefore, be operated in isolation.

  • Page 17: Display And Keyboard

    Display and Keyboard 5. DISPLAY AND KEYBOARD 5.1 Display and Function Selection ® The display (5) of the measuring device ALMEMO 2290-8 consists of an LCD module with six and a half 7-segment digits, two 16-segment digits, and a battery symbol and seven arrows for indicating the operating status. CORR AVERAGE START MEMORY RS232C ALARM F The basic functions are set by the function selector switch (7).

  • Page 18: Keyboard

    Display and Keyboard Special Operating Conditions Segment test of the display automatically after switch-on. Supply voltage: lower than 7V: symbol illuminated lower than 6V: 1:L o b A t   Sensors that are not connected, deactivated measuring points, 1: - - - -  ...

  • Page 19: Data Entry

    Display and Keyboard 5.3 Data Entry The programming of numeric parameters is performed as follows: The desired function can be selected using the rotary switch (7). Additional functions, if required, are selected using the key F. The programming is started by the key ENTER. ENTER The first digit flashes and can be altered.

  • Page 20: Sensor Programming

    Sensor Programming Locking Code (LC): RANGE Keys: O P E N If the locking is switched off, the display indicates:   To lock the access a four digit number C L O S E d is entered (see 5.3) and the display indicates: The functions ENTER, START/STOP and OUTPUT are no longer available in this operating stage.

  • Page 21: Selecting The Measuring Range

    Sensor Programming 6.2 Selecting the Measuring Range If users want to program the connectors on their own or frequently change the measuring range, it is necessary that the locking is cleared (see 6.7) and special connectors may be required for some transducers (e.g. thermo, shunt, divider etc., see table).
  • Page 22 Sensor Programming Transducer Conn. / Cable Meas. Range Dim. Display U260 Millivolt 2 ZA 9000-FS -260.00...+260.00 U2.60 Volt ZA 9000-FS -2.6000...+2.6000 d 26 Differential-Millivolt 1 ZA 9050-FS -26.000...+26.000 d 55 Differential-Millivolt ZA 9050-FS -10.000...+55.000 d260 Differential-Millivolt 2 ZA 9050-FS -260.00...+260.00 d2.60 Differential-Volt ZA 9050-FS...
  • Page 23 Sensor Programming Transducer Conn. / Cable Meas. Range Dim. Display Function Channels diFF Difference Maximum value Minimum value A[t] Average value over time A[n] Averag. val. over junctions S[n] Sum over junctions S[t] Total number of pulses ZA 9909-AK2 0 ... 65000 S[P] Pulses/print cycle ZA 9909-AK2...

  • Page 24: Changing The Dimension

    Sensor Programming 6.3 Changing the Dimension Each measuring channel allows to replace the standard dimension of the measuring range by any other dimension that has two digits (see manual , Ω, %, [, 6.3.5). In addition to all capital and normal letters, the characters ], *, -, =, ~ and spaces (_) are available.

  • Page 25: Correction Values

    Sensor Programming 6.5 Correction Values The correction values ZERO POINT and SLOPE allow for correcting sensors with regard to zero point and slope (gain) (see manual 6.3.10). Corrected Meas. Value = (Meas. Value - ZERO POINT) x SLOPE. Function: Zero point correct. 1: 0 0 3.2 (ZC) BASE...

  • Page 26: Scaling, Decimal Point Setting

    Sensor Programming 6.6 Scaling, Decimal Point Setting For indicating the electrical signal of a sensor as a measured value of a physical variable it is, in most cases, necessary to set a zero point shift and to perform a multiplication with a certain factor. The functions BASE and FACTOR are available for this.

  • Page 27: Locking The Programming Of The Sensor

    Sensor Programming Two-Point Adjustment The scaling values can be automatically determined by using a two-point adjustment. First, the measured value is, at its 'zero state' (ice water, unpressurized etc.), set to zero within the function MEAS. VALUE by using the keys ENTER, CLEAR (see 7.1.4).

  • Page 28: Measurement

    Continuous Measurement of a Measuring Point 7. MEASUREMENT ® The instrument ALMEMO 2290-8 provides the following options for the acquisition of measuring data: 1. Continuous measurement of a selectable measuring point, see manual 6.4. Output of measuring data to the analogue output see manual 5.1.1. 2.

  • Page 29: Memory For Peak Values

    Continuous Measurement of a Measuring Point 7.1.2 Memory for Peak Values From the acquired measured values of each measuring point the highest and lowest value is determined and stored. For indicating the peak values the function MAX. VALUE or MIN V. must be selected with the rotary switch and the desired channel must be set by using the key CH▲.
  • Page 30 Continuous Measurement of a Measuring Point Manual Averaging In this section manual averaging over measured values of the selected channel will be described. The averaging over measuring point scans can be found in the manual section 6.7.4. Averaging over Time To obtain the average value of all measured values of a measuring channel over a specified time period, the averaging mode ´StStP´...

  • Page 31: Setting The Measured Value To Zero, Zero Point Correction

    Continuous Measurement of a Measuring Point 4. If the value is not correct, it can be rejected by operating the key START/STOP once again, i.e. the arrow ´MEMORY´ disappears and the instantaneous value is indicated again. 5. To acquire more values, the steps 2 to 4 can be repeated. 6.
  • Page 32 Continuous Measurement of a Measuring Point Zero Point Adjustment Many sensors must be adjusted at least once or at regular intervals to compensate for instabilities. For this purpose, a specific zero point adjustment is available, in addition to the ´Set Measured Value to Zero´ mentioned above, as some sensors require an additional scaling (e.g.

  • Page 33: Atmospheric Pressure Compensation

    Single Measuring Point Scan 7.1.5 Atmospheric Pressure Compensation Some measuring variables depend on the environmental atmospheric pressure (see 6.2 measuring range list ´w. PC´). As a result, higher deviations from the normal pressure of 1013mbar can cause corresponding measuring errors: e.g.

  • Page 34: Print Cycle, Output Channel, Output Format

    Cyclic Measuring Point Scan 7.3 Cyclic Measuring Point Scan (see manual 6.5.1.2) For cyclic measuring point scans the measuring or print cycle (see 7.3.1/2) must be programmed. The measurement is started with the key START/STOP and the arrow ´START´ is continuously indicated. If the memory is active (see 7.4.1) the measured values are stored and the arrow ´MEMORY´...

  • Page 35: Measuring Cycle And Memory Activation

    Cyclic Measuring Point Scan Output formats (see manual 6.6.1) The output format determines the print output at measuring point scans and at the memory output. Apart from the standard list format, with all measured values given in a list, the column output format allows for a clear and space-saving printout in columns.

  • Page 36: Time And Date

    Cyclic Measuring Point Scan 7.3.3 Conversion Rate, Continuous Measuring Point Scan If required the conversion rate can be increased from 2.5 to 10M/sec (see manual 6.5, 6.5.4). The rotary switch must be moved to position MEAS. CYCLE and the additional function CONVERSION RATE ´CR´ must be selected by using the key F and must be set by using the keys ENTER, ▲...

  • Page 37: Start And Stop By Limit Values

    Data Memory 7.3.5 Time and Date of Start, Time and Date of End A sequence of measurements can, at certain points in time, be automatically started and stopped. For this purpose, the time and date of the start and the time and date of the end can be programmed.

  • Page 38: Data Memory

    Data Memory 7.4 Data Memory ® The basic information with regard to data storage in ALMEMO devices is given in the manual section 6.9. The memory organisation can be reconfigured from linear to ring memory (see manual 6.10.13.2). 7.4.1 Data Acquisition Switch-on and Switch-off of the Storage within the Measuring Cycle If the memory has been activated in position MEAS.

  • Page 39: Memorry Connector

    Numbering of Measurements 7.4.2 Memory Connector ® ® The ALMEMO 2290-8 is the device that allows connecting external ALMEMO EEPROM Memory Connectors ZA 1904-SS with capacities of 128kB or 256kB (25,000 or 50,000 measured values). These memories do not require a battery to keep stored data available.

  • Page 40: Output Of Measuring Data

    Sleep Mode 7.4.3 Measured values Output The content of the data memory can, using measuring points, be provided as output to the display and the analogue output or, using cycles, be provided as output to the serial interface. The output channel is relevant in this context. Output to the Display and to the Analogue Output Select output channel: Display: output channel ´-´...

  • Page 41: Numbering Measurements

    Digital Data Output MEMORY: Print Output: NUMBER: 12-001 (if activated) DATE: 12.03.90 12:30:00 01: +0012.0 °C NiCr designation list format 02:!+0008.8 °C NiCr water 03:>+125.00 °C Ntc motor oil Clear Memory ENTER MEMORY Clear with keys: CLEAR To completely clear all measured values use ENTER, CLEAR ±...

  • Page 42: Sleep Mode

    Digital Data Output 7.6 Sleep Mode For long term monitoring with larger measuring cycles it is possible to operate the measuring device in sleep mode. Within this power saving mode the device will be switched off after each measuring point scan and will be automatically switched on for the next measuring point scan after the cycle time has expired.

  • Page 43: Digital Data Output

    Digital Data Output 8. DIGITAL DATA OUTPUT The entire programming of the sensors and the instrument, as well as all measured values, can be provided as output to a printer or computer via serial interface. The different interface modules can be connected to socket OUT1 (3).

  • Page 44: Device Address And Networking

    Analogue Output OUTPUT CYCLE Key: Example: address 01 Only successive numbers between 01 and 99 should be entered for network operation so that the device 00 cannot be falsely addressed in case of a power supply failure. 8.3 Manual Data Output For the output of data to a printer the output channel must be set to ´...
  • Page 45 DATE DATE F, F END DATE: 02.02.99 PRINT CYCLE: 00:06:00 PRINT CYCLE MEAS. CYCL. MEAS. CYCLE: 00:01:30 AMR ALMEMO 2290-8 BAUD RATE CH RANGE LIM-MAX LIM-MIN OFFSET D FACTOR EXP AVG COMMENT Sensor 01:NiCr +0123.4 - - - - - - °C 1.0350 E+0 - - - Designation...

  • Page 46: Analogue Output

    Electromagnetic Compatibility 9. ANALOGUE OUTPUT For analogue acquisition of the selected measuring point either an analogue output cable ZA 1601-RK (see manual 5.1.1) without electrical isolation or a relay trigger analogue adapter ZA 8000-RTA (see manual 5.1.3) with electrically isolated analogue output can be connected to the sockets A1(OUT1) or A2(OUT2).

  • Page 47: Troubleshooting

    Appendix 10. TROUBLESHOOTING ® The data logger ALMEMO 2290-8 can be configured and programmed in many different ways. It allows for a connection of many different sensors, additional measuring instruments, alarm signalisers and peripheral devices. Due to the large variety of options it is possible that, under certain conditions, it does not perform as the user would expect.

  • Page 48: Electromagnetic Compatibility

    Appendix Test the data transmission by using a terminal (AMR-Control, WIN-Control, DATA-Control, WINDOWS Terminal): Address the device with its device number Gxy (see manual 6.2.1), query the programming by P15 (see manual 6.2.3), only check the sending line by cycle input via command Z123456 and control in the display.

  • Page 49: Appendix

    -10 ... +60 °C Storage temperature: -30 ... +60 °C Humidity of ambient air: 10 ... 90 % rH (non-condensing) Extent of the Delivery: Measuring Instrument ALMEMO 2290-8 Operating Instructions ALMEMO 2290-8 ® ALMEMO Manual incl. software AMR-Control Product Overview Order No.
  • Page 50 Appendix ® ALMEMO 2290-8...
  • Page 51 Appendix ® ALMEMO 2290-8...
  • Page 52 Appendix ® ALMEMO 2290-8...

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