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  10. Display and keypad

10. DISPLAY AND KEYPAD

10.1 Display 

The display (4) on measuring instruments ALMEMO

®

  2790 is a two-row LCD

arrangement; this comprises 5  x  7-segment digits (e), 2  x 16-segment digits

(d) depicting the measured value, 4½ x  7-segment digits (b) depicting various

measuring functions (a), and four arrows (f) depicting the operating status.

Function field

Main field

 

START

LOBAT

CONNECT

FCT

Function field - 

display of measuring functions

:

Measuring point:

Maximum value:

Minimum value:

Temperature value from double sensors:

Time format in cycle function hh:mm:

Device is in sleep mode:

 16                ALMEMO

®

 2790 

MAX   

 

   

36

.

MIN  

  

 

   

17

.

    M   

O

26

.

57

 °C

 

 

    

hh

:

nn 

 

 

    

SLP  

Summary of Contents for ALMEMO 2790

Page 1: ...____________________________ Operating instructions English Wireless sensor link MA2790BTFV with ALMEMO 2790 and sensor module V1 1 05 09 2016 www ahlborn com...

Page 2: ...value f Operating states START Meas operation started LOBAT Battery voltage 3 3 V CONNECT Wireless link established FCT Programming function 5 Operating keys ON OFF To switch device ON press once and...

Page 3: ...tteries 11 7 1 2 Operation using standard batteries 12 7 1 3 Supply voltage monitoring 12 7 2 Mains operation 12 7 3 External DC voltage supply 13 7 4 Sensor supply 13 7 5 Switching ON OFF reinitializ...

Page 4: ...cking 24 13 3 Atmospheric pressure compensation 24 14 WIRELESS TRANSMISSION TO DATA LOGGER 25 15 TROUBLE SHOOTING 25 16 ANNEX 27 16 1 Technical data 27 16 2 Product overview 28 16 3 Index 29 16 4 Your...

Page 5: ...vice before leaving our factory undergoes numerous quali ty tests We provide a guarantee lasting two years from delivery date that your device will function trouble free Before returning your device t...

Page 6: ...ed with the same symbol Disposal of any such item as un sorted domestic waste is strictly forbidden Please dispose of all packaging materials in accordance with the applicable national waste managemen...

Page 7: ...conjunction with unsuitable peripheral equipment Use of the device for any purpose other than that for which it is intended Damage caused by electrostatic discharge or lightning DANGER Risk of fatal i...

Page 8: ...egrated power supply are not electrically iso lated from one another s 9 3 4 2 Handling batteries rechargeable batteries correctly When inserting batteries rechargeable batteries ensure that the polar...

Page 9: ...operating instructions you are now reading cover only those features and controls that are specific to this device These operating instructions often re fer to more detailed descriptions in the Manua...

Page 10: ...red values over a wireless link or to the interface If the cycle is set to 0 data is transmitted continuously in this case the sensor device should be powered from an external source With settings upw...

Page 11: ...suring instrument two cy cles are left to complete and then sensor breakage is reported If the cycle is set to more than 0 the device will after transmission resume sleep mode display SLP 7 To termina...

Page 12: ...g Energizer Ultimate Lithium LR91 FR6 the operating time can even be doubled 7 1 3 Supply voltage monitoring The operating voltage is displayed each time the device is switched on thus al lowing the...

Page 13: ...ngs are retained intact see 7 6 If interference e g electrostatic charge battery failure causes the device to behave abnormally it can be reinitialized To activate Reset press and hold down key F2 r w...

Page 14: ...s incorporate two snap lock levers these snap into position as soon as the plug is inserted into the socket thus preven ting unintended disconnection if the cable is pulled accidentally To withdraw th...

Page 15: ...al separation When organizing a properly functioning measuring setup it is very important to ensure that no equalizing current can flow between sensors power supply and peripherals All points must the...

Page 16: ...ured value 4 x 7 segment digits b depicting various measuring functions a and four arrows f depicting the operating status Function field Main field START LOBAT CONNECT FCT Function field display of m...

Page 17: ...up Checksum error during device calibration Non connected sensors deactivated measuring points Measuring range function not permitted Sensor breakage Abbreviation flashes Measuring range undershot CJ...

Page 18: ...9 2 11 1 Measured value After switching ON first of all a segment test is performed then the battery voltage UbAt ap pears and if the rechargeable batteries are al most empty 3 4V the LOBAT arrow als...

Page 19: ...ctivate or deactivate a channel Step 1 Selecting a channel Using key select the desired channel Step 2 Activating the settings menu Press and hold down key In the menu the channel s current status is...

Page 20: ...00 C Ntc Millivolt ZA 9000 FS0 10 000 55 000 mV U 55 Millivolt 1 ZA 9000 FS1 26 000 26 000 mV U 26 Millivolt 2 ZA 9000 FS2 260 00 260 00 mV U260 Volts ZA 9000 FS3 2 0000 2 6000 V U2 60 Difference mill...

Page 21: ...with PC FN A846 0 0 1050 0 mb P UP Enthalpy psychrometric with PC FN A846 0 0 400 0 kJ P En Conductivity probe with TC FY A641 LF 0 0 20 000 mS LF CO2 sensor FY A600 CO2 0 0 2 500 CO2 O2 saturation wi...

Page 22: ...e press and hold down key To delete the minimum value press and hold down key To return to the measuring point display briefly press key Whenever this data is deleted the current measured value will s...

Page 23: ...ess key To return to the measured value display press key 13 1 Cycle The cycle with abbreviation ZY is for acqui ring measured values at certain intervals and then transmitting these over a wireless l...

Page 24: ...c pressure compensation Some measured variables depend on the ambient atmospheric pressure see 11 1 2 measuring range list with PC with the effect that large deviations from normal pressure 1013 mbar...

Page 25: ...m eight channels possible with option RHA only the first four are transmitted Those channels not required can be deactivated see 11 1 1 If the sensor module is connected at socket M04 channel numberin...

Page 26: ...for thermocouples short circuit A B for Pt100 sensors use 100 and check then reconnect sensor and recheck If necessary insulate the sensor or power the device using an electrically isolated supply Er...

Page 27: ...class 1 with internal antenna Standard equipment LCD Meas value 5x 7 segment 15 mm 2x 16 segment 9 mm Function 4 x 7 segment 9 mm 9 symbols Operation 7 silicone keys Power supply Batteries 3 Ni MH re...

Page 28: ...rechargeable batteries DC socket for mains adapter Bluetooth wireless sensor module ZA1729BTFS for ALMEMO measuring instruments MA2790BTFV Options Integrated digital sensor for temp humidity and atm...

Page 29: ...CONNECT 2 17 Connecting sensors 14 contact partners 32 Current consumption 27 Cycle 10 23 Data buffering 13 Data transmission 10 DC adapter cable 28 Deactivating and reactivating measuring channels 1...

Page 30: ...ies and ranges 20 Measuring range overshot 17 minimum value 22 Mixture ratio 24 module 27 Ni MH rechargeable batteries 27 notes on use 8 O2 saturation 24 ON PROG 18 Operating conditions 27 Operating c...

Page 31: ...nsor power supply 27 Sensor programming 10 Sensor supply 13 Sensors 14 sleep mode 16 24 Standard delivery 6 Standard equipment 27 START 2 17 Supply voltage 17 Supply voltage monitoring 12 switch the d...

Page 32: ...4 3007 0 Fax 49 0 8024 300710 Internet http www ahlborn com email amr ahlborn com After sales service Hot line Florian Plessner Telephone 49 0 8024 3007 38 We take every possible care but the risk of...

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