GREISINGER GMH 3750 Operating Manual
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GREISINGER GMH 3750 Operating Manual

Precision thermometer for pt100 4-wire temperature probes
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H49.0.02.6C-10
Precision thermometer
for Pt100 4-wire temperature probes
GMH 3750
operating manual
as of version 1.6
GMH 3700 Series
Pt100 Thermometer
Hochpräzision / High-Precision
WEEE-Reg.-Nr. DE 93889386
GHM GROUP - Greisinger
GHM Messtechnik GmbH | Hans-Sachs-Str. 26 | 93128 Regenstauf | GERMANY
Tel.: +49 9402 9383-0 |
info@greisinger.de
| www.greisinger.de

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Summary of Contents for GREISINGER GMH 3750

  • Page 1 1.6 GMH 3700 Series Pt100 Thermometer Hochpräzision / High-Precision WEEE-Reg.-Nr. DE 93889386 GHM GROUP - Greisinger GHM Messtechnik GmbH | Hans-Sachs-Str. 26 | 93128 Regenstauf | GERMANY Tel.: +49 9402 9383-0 | info@greisinger.de | www.greisinger.de...

  • Page 2: Table Of Contents

    User’s Guide GMH 3750 H49.0.02.6C-10 page 2 of 16 _____________________________________________________ _____________________________________________________________________________ CONTENTS GENERAL NOTE ..............................3 SAFETY ..................................3 ............................... 3 NTENDED ..........................3 AFETY SIGNS AND SYMBOLS .............................. 3 AFETY GUIDELINES PRODUCT SPECIFICATION ..........................4 ..............................4 COPE OF SUPPLY ......................

  • Page 3: General Note

    2 Safety 2.1 Intended Use The GMH 3750 is a precision thermometer for the measurement of the temperature with exchangeable 4- wire Pt100 temperature sensors. With high resolution and precision temperature values can be measured from -200 to 850 °C.

  • Page 4: Product Specification

    User’s Guide GMH 3750 H49.0.02.6C-10 page 4 of 16 _____________________________________________________ _____________________________________________________________________________ 3. When connecting the device to other devices the connection has to be designed most thoroughly as internal connections in third-party devices (e.g. connection GND with protective earth) may lead to undesired voltage potentials that can lead to malfunctions or destroying of the device and the connected devices.

  • Page 5: Handling

    User’s Guide GMH 3750 H49.0.02.6C-10 page 5 of 16 _____________________________________________________ _____________________________________________________________________________ 4 Handling 4.1 Display Maindisplay: Currently measured temperature Secondary display: Display of min, max or hold values Special display elements: Min/Max/Hold: shows if a min., max. or hold value is displayed in the auxiliary display “Offset“...

  • Page 6: Pop-Up Clip

    User’s Guide GMH 3750 H49.0.02.6C-10 page 6 of 16 _____________________________________________________ _____________________________________________________________________________ 4.4 Pop-up clip Handling: • Pull at label “open” in order to swing open the pop-up clip. • Pull at label “open” again to swing open the pop-up clip further.

  • Page 7: Start Operation

    User’s Guide GMH 3750 H49.0.02.6C-10 page 7 of 16 _____________________________________________________ _____________________________________________________________________________ 5 Start Operation Connect Temperature probe, turn on device via key. Store Menu Quit After segment test the device displays some configuration: • If the logger function is not off the time of the integrated clock will shortly be displayed.

  • Page 8: Remarks To Special Features

    User’s Guide GMH 3750 H49.0.02.6C-10 page 8 of 16 _____________________________________________________ _____________________________________________________________________________ -200..850°C / Scale of analogue output : Temperature value at -328...1562°F which the analogue output potential should be 1V Set Alarm: Setting of Alarm Function On / No.So Alarm on with horn-sound / Alarm on without horn-...

  • Page 9: User Sensor Curve ('Lin User')

    User’s Guide GMH 3750 H49.0.02.6C-10 page 9 of 16 _____________________________________________________ _____________________________________________________________________________ 7.4 User Sensor Curve ('Lin USEr') By means of this function besides the standard conversion of resistance to temperature following EN60751(Lin E.751) also other curves can be used. The user sensor curve can be read and edited by the configuration software GMHKonfig.

  • Page 10: Automatic Recording With Selectable Cycle Time „Func Cycl

    User’s Guide GMH 3750 H49.0.02.6C-10 page 10 of 16 _____________________________________________________ _____________________________________________________________________________ c) Clear recorded measurings: If there are already data sets stored, these can be deleted via the store key: Press for 2 seconds: Calling of clear-Menu Change selection by:...

  • Page 11: Output

    User’s Guide GMH 3750 H49.0.02.6C-10 page 11 of 16 _____________________________________________________ _____________________________________________________________________________ 9 Output The output can be used as serial interface (for USB 3100, USB 3100 N, GRS 3100 or GRS 3105 interface adapters) or as analogue output (0-1V). If none of both is needed, we suggest to switch the output off, because battery life then is extended.

  • Page 12: Analogue Output - Scaling With Dac.0 And Dac.1

    User’s Guide GMH 3750 H49.0.02.6C-10 page 12 of 16 _____________________________________________________ _____________________________________________________________________________ 9.2 Analogue Output – Scaling with DAC.0 and DAC.1 Note: Analogue output can not be used during logger recordings With the DAC.0 and DAC.1 values the output can be rapidly scaled to your efforts.

  • Page 13: Some Basics Of Precision Temperature Measuring

    User’s Guide GMH 3750 H49.0.02.6C-10 page 13 of 16 _____________________________________________________ _____________________________________________________________________________ 12 Some Basics Of Precision Temperature Measuring Probe Precision/Device Precision The device is very precise (please refer to technical data). To be able to use this high precision, the connected temperature probe has to be as precise as possible, too.

  • Page 14: Fault And System Messages

    User’s Guide GMH 3750 H49.0.02.6C-10 page 14 of 16 _____________________________________________________ _____________________________________________________________________________ 13 Fault and System Messages Display Meaning Remedy Low battery voltage, device will Replace battery continue to work for a short time If mains operation: wrong voltage Check/replace power supply, if fault continues...

  • Page 15: Specifications

    User’s Guide GMH 3750 H49.0.02.6C-10 page 15 of 16 _____________________________________________________ _____________________________________________________________________________ 15 Specifications Supported probes Pt100 4-wires (2-wire possible) Sensor Curve according to EN60751 or with user-sensor curve (table of 50 rows) Probe connection 4-pole Mini-DIN socket Resolution 0,01°C 0,1°C 0,01°F...
  • Page 16 User’s Guide GMH 3750 H49.0.02.6C-10 page 16 of 16 _____________________________________________________ _____________________________________________________________________________...

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