3 Mignon Alkaline Batteries Function abort <ESC> or 3 Mignon NiCd/NiMH Accumulators Last measuring menu (9) Stand for stand and hang up (7) Rubber shock absorber (for opening out from 90° to 180° please press the stand together!) ALMEMO 2690-8...
3.1 Guarantee....................6 3.2 Extent of the Delivery ................7 3.3 Handling Batteries or Accumulators..........7 3.4 Special Operating Instructions............7 4. INTRODUCTION..................8 4.1 Function Range of the ALMEMO 2690-8..........8 4.1.1 Sensor Programming..............8 4.1.2 Measurement................10 4.1.3 Process flow control..............11 5. INITIAL OPERATION.................13 6.
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10.1.3 Conversion Rate, Continuous Measuring Point Scan....46 10.1.4 Time and Date of Start, Time and Date of End ......47 10.2 Data Memory..................48 10.2.1 Data Acquisition.................48 10.2.2 Numbering of measurements............49 10.2.3 Starting and Stopping of measurements........49 10.2.4 Sleepmodus................49 10.2.5 Memory Output................50 10.3 Sensor Programming...............52 ALMEMO 2690-8...
Table of Contents 10.3.1 Selecting the Input Channel............52 10.3.2 Measuring Point Designation.............53 10.3.3 Averaging Mode.................53 10.3.4 Locking the Programming of the Sensor........53 10.3.5 Limit Values................54 10.3.6 Scaling, Decimal Point Setting..........54 10.3.7 Correction Values..............55 10.3.8 Changing the Dimension............55 10.3.9 Selecting the Measuring Range..........55 10.3.10 Function Channels ..............58 10.4 Special Functions................59 10.4.1 Print Cycle Factor..............59...
Using the device in a way it is not determined for Damages through electrostatic discharge or flash of lightning Not paying attention to the operating instructions Changes in the product features in favour of technical progress or due to new components are reserved to the producer. ALMEMO 2690-8...
Extent of the Delivery 3.2 Extent of the Delivery While unwrapping the delivery, pay attention to damages of the device and to its completeness: Measuring device ALMEMO 2690-8 with 3 alkaline-mignon-batteries, ® Rubber shock absorber with a stand, these operating instructions, ®...
2690-8 is a new instrument from the unique pro- ® duct range of measuring devices that are all equipped with the 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 EE- PROM within the connector.
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Function Range of the ALMEMO 2690-8 connectors. However, the user can easily complete or modify the programming via keyboard or via interface. 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).
- ty sensors, dynamic pressure sensors and O2 sensors. With infrared sensors the parameters zero point and slope correction are used for background tem- perature and emissivity factor. ALMEMO 2690-8...
Function Range of the ALMEMO 2690-8 Max and Min Value Each measurement involves an acquisition and storage of the Max value and the Min value including the time and date. The values can be displayed, printed or cleared. Average Value A manual averaging over a particular period, cycle or over single measure- ments is available for every channel.
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ALMEMO manual. The ® integrated terminal also allows for online measurements. The WINDOWS software WIN-Control is available for data acquisition of networked devices, graphical presentation and complex data processing. ALMEMO 2690-8...
For external supply of the device the mains adapter ZA 2690-NA (12V/0.2A) must be connected to the socket DC (3). Pay attention to the mains voltage! Operating with accumulator, the stronger mains adapter ZA 2690-NA2 (12V/0.8A) allows an especially fast charging of the accumulators in 1 hour. ALMEMO 2690-8...
External DC Voltage Supply 6.4 External DC Voltage Supply It is also possible to connect another DC voltage, 6..12V (min. 200mA), to the socket DC (3).The connection is performed by using an ALMEMO connector. ® However, the electrically isolated supply cable ZB 2690-UK must be used if an electrical isolation between power supply and transducers is required or if a larger input voltage range 10...30V is required.
For unused sockets there are dummy connectors. 7.2 Measuring inputs and Additional Channels The measuring instrument ALMEMO 2690-8 has 5 input sockets (1) that the ® measuring channels M0 to M4 are initially allocated to. However, ALMEMO sensors can, if required, provide up to 4 channels so that 20 channels are available with 5 input sockets.
Measuring inputs and Additional Channels Advantage of the device-internal channels: If several sensors are being used for the same application, they do not have to be reprogrammed and can be freely exchanged without losing their function channels. If, however, the whole application operates with just one sensor, then programming in the sensor itself makes more sense.
8. DISPLAY AND KEYPAD 8.1 Display and Menu Selection The display (5) of the measuring instrument ALMEMO 2690-8 consists of a dot matrix LCD display with 128x128 dots, or 16 lines with 8 dots. For the acquisiti- on of measuring data with the required functions and for the programming of the process control, the sensors and the device parameters, 3 categories of menus are available: Measuring-Menus (s.
Switching back to the previous digit Each digit ..., is programmed analogously to the first one Quitting the data entry PROG Cancelling the programming process <ESC> The input of letters, measuring ranges etc. can be carried out accordingly. ALMEMO 2690-8...
Function Time and Date of Maximum Value: Min Time: 12:56 01.02. Function Time and Date of Minimum Value: Maximum Value: 245.7 °C To clear, select function (s. 8.4): Clear single value wich key: <CLR> <CLRA> Clear Max, Min and Avg. Values of all channels: ALMEMO 2690-8...
Measuring with one Measuring Point Due to the continuous measurement the current measured value will be imme- diately displayed after the clearing process. Furthermore, the peak values are cleared at each start of a measurement, if the device has been correspondin- gly configured (standard setting, s.
FY A640-O2: 101 % 7.00 pH pH-Wert Slope: Setpoint 2: 10.00 pH 01: 10.00 pH pH-Wert If required, temperature and air pressure can Slope error: -10.8 % also be entered here for compensation. START MANU M PRINT ESC ALMEMO 2690-8...
Correction of the Meas. Value and Compensation 1. Setting up a means of calibration for the zero point: Setpoint 1: 07.00 Select function Setpoint 1: Zero point adjustment with key: <ADJ> 07.00 º The adjustment meas. value is recorded: In the case of pH probes, the standard values, base value 7.00 and <CLEAR>...
With each reset the atmospheric pressure is set to 1013mb. It can be set to the current value by the usual data entry (s. 8.5). If it is measured, the measured value will be displayed. Please note that the last measured value will be retained when a reference sensor is being disconnected. ALMEMO 2690-8...
Correction of the Meas. Value and Compensation 9.2.7 Cold Junction Compensation Cold junction compensation for thermocouples is normally performed automati- cally by means of an NTC sensor in measuring socket M2. The Cold junction temperature is displayed as an operating parameter in the device configuration (s.
After selecting the function (s. 8.4), the cycle can be entered immediately (s. 8.5). After starting a measurement you can see the timer coun- ting down to the next cycle. Cycle Timer: 00:02:00 Function Cycle Timer Cycle (hh:mm:ss), Memory On, Format List ALMEMO 2690-8...
Measuring point scans and Output The key <FORM> can be used as the quickest way to set the required Output Format (printouts s. man. 6.6.1). <FORM> Change format: Cycle Timer: 00:02:00Sn Format columns next to each other ´n´: Change format: <FORM>...
At all measuring points where mea- sured values must be averaged the averaging must be switched on by using the averaging mode ´CONT´, a measurement in progress must be stopped. ∑ M= /N MANU MANU MANU MANU ALMEMO 2690-8...
Averaging 1. Stop measurement, if it is started: <STOP> Averaging mode: CONT 2. Set the averaging mode (s. 8.5): Damping: For smoothing a meas. value select damping: Conv. rate:10M/sCont: Switch the continuous scanning off, if required: <CLR> 3. Clear avg. value by selecting it (s. 8.4) and using: Average val: ----- m¡...
If the function ´Clear Meas. Values On Start of a Measurement´ is activated within the operating parameters (s. 10.5.8), the measurement time will also be automatically cleared on each start. Function measuring time: Measuring time: 00:00:00.00 Clearing the measuring time by using: <CLR> ALMEMO 2690-8...
Averaging 9.4.7 Averaging over the Cycle The averaging mode ´CYCL´ must be used if average values have to be acqui- red in cyclic periods over these periods. This ensures, that the average value is cleared after each cycle, but appears in the display during the next cycle. Conv.
M0 to M3 M0 M1 M2 M3 If the sensors are to stay untouched, the function channel can also be pro- grammed to the device internal channels (e.g. M15) (s. 10.3.10). The standard reference channels are here M0 to M1. ALMEMO 2690-8...
M5 (s. 7.2). If the differential channel is not required, it must be explicitly deleted (s. 10.3.9). If further differential channels are needed, these can be created using the appro- priated reference channels (s. 10.4.6). ALMEMO 2690-8...
Wetbulbglobetemp: Channel: 11 thermometer is connected to socket M1. The 11: 17.43 °C output on channel 11 is programmed to WBGT; (for this device the factor 0.2 must 1 Range: WBGT not be programmed !). START MANU PRINT ESC ALMEMO 2690-8...
User Menus 9.7 User Menus When studying the measurement menus you may have noticed that the display of the meas. value and the combination of functions does not always match your applications in an optimum way. Therefore, you can freely configure the three user menus U1 to U3, in addition to the standard measuring menus using the software AMR-Control.
Put in an expressive menu title: User menu title Menu store, Ux, OK Store the finished menu in the device on Ux with: All menus can also be stored in the PC and be reloaded, if required! ALMEMO 2690-8...
(s. 9.4.1) Input of the smoothing for the input channel: f1 gxxxxx Input of temperature compensation in 0.1 °C: (f1 g00150=15.0°C) f2 gxxxxx Input of setpoint at input channel: f2 C01 Setpoint adjustment (VM=4 Factor, VM≤3 Slope): ALMEMO 2690-8...
PRINT ESC 10.1.1 Time and Date The ALMEMO 2690-8 is equipped with a real time clock with date function for recording the measuring time. It has a lithium battery so the time and date are also maintained after battery change. By selecting the function (s. 8.4) the time can be programmed in the specified format in the first line on the left side and the date on the right side (s.
If the continuous measuring point scan is switched on, all active measuring channels will be continuously and successively scanned by the conversion rate and all measured values are always up-to-date (s. man. 6.5.1.3). The output and storage of all measured values is also possible. ALMEMO 2690-8...
Times and Cycles The continuous storage and the continuous output of the measured values can be activated with the conversion rate using the following two functions. Conv. rate: 10M/s Function Conversion rate: Input s. 8.5 Cont: <OFF> half-continuous measuring point scan (basic setting): Cont: Ø...
Switch on sleepmode (s. 10.2.4) using the key: StoringTime: 24d 13h Storing time from cycle and channel number: Meas.duration, after start automatic stop after: Meas.duration: 00:10:00 Number: e.g. room 12, meas. point 1 s. 10.2.2 Number: 12-001 A ALMEMO 2690-8...
< +1 > Incrementing and activating the number with: 10.2.3 Starting and Stopping of measurements Additionally to starting and stopping of the ALMEMO 2690-8 measurement with the keys, there are even ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ more possibilities, concretely conveyed by the MEASURING START-STOP:...
Enter the end date using the format ´ ´: dd:mm:yy <ALL> Perform complete output of data memory: <NR> Output of a numbered measurement: <TIME> Output of a time interval from start to end: <STOP> Cancelling the memory output using the key: ALMEMO 2690-8...
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Data Memory The memory contents will be output with the same print format as with a printer operation, including multiple printouts and different formats (s. man. 6.6.1). During the output of data memory, the remaining memory content (in kB) to be output is continuously indicated in the function .
Indication of connector number and channel: Selecting the next input channel using the key: Selecting the previous input channel using the key: <MALL> Enabling the selection of all available channels: Reducing the selection to all active channels: <MACT> ALMEMO 2690-8...
Sensor Programming 10.3.2 Measuring Point Designation Each measuring point can be given a 10-digit alphanumeric designation to optimally identify the type of sensor, the measuring location or the purpose of the application. This comment will be indicated with all standard displays of measured values.
0.3125 The correction arrow º will be indicated as 5 Exponent: 4 Slope correct: ------ status of the measured value (s. 8.3), if 27.0 °C scaling values have been programmed and the actual measured value has been altered. ALMEMO 2690-8...
Sensor Programming 10.3.7 Correction Values The correction values ZERO CORRECTION and SLOPE CORRECTION allow for correcting sensors with regard to zero point and slope (s. man. 6.3.10). Corrected Meas. Value = (Meas.Value - ZERO CORR.) x SLOPE CORR. Function: 4 Zero correct.: -----°C Zero point correction: 4 Slope correct.: -----°C Slope correction:...
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Infrared 1 Infrared 4 ZA 9000-FS -30.0... +100.0 °C Ir 4 Infrared 6 ZA 9000-FS 0.0... +500.0 °C Ir 6 FV A915-S120 0.30... 20.00 Rotating Vanes Normal 20 S120 Rotating Vanes Normal 40 FV A915-S140 0.40... 40.00 S140 ALMEMO 2690-8...
M1. Advantage of device-internal channels: If several sensors are being used for the same application, they do not have to be reprogrammed and can be freely exchanged without losing their function ALMEMO 2690-8...
Sensor Programming channel assignment. However, if the whole application operates with just one sensor, then programming on the sensor itself makes more sense. 10.4 Special Functions SPECIAL FUNCTIONS The data logger 2690-8 has a separate menu ±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±± Connector: 1 Channel: 11 ®...
Clear response by using the key: Printing the sensor programming (s. man. 6.10.1), there appears a composed code for start/end S/E (s. man. 6.6.3) and relay allocation x (s. man. 6.10.8) in the actions Max (AH) and Min (AL). ALMEMO 2690-8...
Special Functions 10.4.4 Analog Output Start and End In most cases the analog output of measured values to the analog output mo- dules (see manual 5) or the display as bar or line chart must be scaled to a specified sub-range. For this, it is just necessary to specify the start and end value of the display range required by you.
(Activation of all averaging functions:) * ElementFlags: Flag 6 (Element flag 6:) * ElementFlags: Br Off Switch-off of the sensor breakage detection: ElementFlags: A 4-20 Analog output 4-20mA instead of 0-20mA: At the ALMEMO 2690-8 these element flags have no meaning ALMEMO 2690-8...
. The de- DEVICE CONFIGURATION ±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±± Device designation: vice designation serves as print header in Ahlborn, Holzkirchen log printouts and facilitates the assignment Device: 00 V: 6.05 XY Baud rate: 9600 Bd within a network. Furthermore, the device...
Setting the contrast (10 to 100%) s. 8.5: 10.5.6 Atmospheric Pressure For compensation of various sensors the atmospheric pressure can be entered (s. 9.2.6). If it is measured, it will also be indicated in this function: Atm. Pressure 1013mb Entering the atmospheric pressure in function: ALMEMO 2690-8...
Device Configuration 10.5.7 Hysteresis In case of an exceeding of limit values the hysteresis of an alarm condition can, generally for all sensors, be set in the function Hysteresis (s. 10.3.5 and manual 6.2.7) within the range from 0 to 99 digits (standard setting is 10 digits).
At socket A2: EA Trigger Alarm a trigger alarm cable is connected, 2: Rx int. allocated programmed to variant no. 2, Relay: -1------ the relay R1 is activated After the function selection the variant x can be programmed. ALMEMO 2690-8...
Output Modules The alarm variant no. 2 ´Relay internally allocated´ additionally requires the al- location of the relays to particular limit values (s. 10.4.3). The variant no. 8 ´Externally Triggered´ allows a manual triggering of relays through the keypad or via the interface (see manual 6.10.10.). EA Trigger Alarm Trigger alarm cable 8: Rx ext.
However, in normal operating conditions the current is reduced in order to ALMEMO 2690-8...
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Menu Power Supply reserve sufficient current for the measuring instrument and sensors and to avoid adversely affecting measuring quality. With our two mains adapters (accessories) the following recharge times are needed: Order-No. Max. current Device status Charge current Charge time ZA2690-NA 200mA switched off...
11. Troubleshooting 11. TROUBLESHOOTING The data logger ALMEMO 2690-8 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.
12. ELECTROMAGNETIC COMPATIBILITY The data logger ALMEMO 2690-8 meets the essential electromagnetic com- pability safety requirements issued in the relevant CE directive 89/336/EWG. The following standards have been applied for the evaluation of the product:...
Keyword index 13.3 Keyword index Keyword Section Page Accumulator capacity 10.7 Accumulator operation Action max and Action min 10.4.3 Additional Channels Alarm cable 10.6.2 Alarm Relay Cable 10.4.3 Analog Output 10.6.3 Analog Output Start and End 10.4.4 Analogue channel 10.6.3 Assistant-Menus 18, 40 Atmospheric Pressure...
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Exponent 10.3.6 Extent of the Delivery External DC Voltage Supply Factor 10.3.6 Function Channels 10.3.10 Function Keys Function Printouts 9.7.3 Function Range of the ALMEMO 2690-8 Function Selection Guarantee Housing 13.1 Hysteresis 10.5.7 54, 65 Initial Operation Introduction Isolation Keypad Language 10.5.4...
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Keyword index Measurement Time 9.4.6 Measuring Measuring inputs 13.1 16, 72 Measuring Point Designation 10.3.2 Measuring point scans Measuring with one Measuring Point Measuring-Menus 18, 21 Memory Output 10.2.5 29, 50 Memory space 9.3.3 Menu List of Measuring Points 9.5.3 Menu Power Supply 10.7 Menu Selection...
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Time and Date of Maximum Value 9.1.2 Time and Date of Start 10.1.4 Transducers Trigger Cable 10.6.2 Troubleshooting Two-point Adjustment 9.2.4 U-Sensor Min 10.4.2 User Menus Volume Flow Measurement 9.4.9 Wet Bulb Globe Temperature 9.6.2 Zero Point Adjustment 9.2.2 Zero point correction 10.3.7 ALMEMO 2690-8...
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