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Summary of Contents for GREISINGER GMH 3750
- Page 1 H49.0.02.6B-06 Operating Manual Precision Thermometer GMH 3750 Pt100 4-Wire as of Version 1.8 GREISINGER electronic GmbH D - 93128 Regenstauf, Hans-Sachs-Straße 26 Phone: +49 9402 / 9383-0, Fax: +49 9402 / 9383-33, eMail: info@greisinger.de...
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Page 2: Table Of Contents
FAULT AND SYSTEM MESSAGES....................15 DISPOSAL NOTES ..........................15 SPECIFICATION ..........................16 © Copyright 2008 GREISINGER electronic GmbH. All Rights Reserved. No part of this documentation may without previous written permission of the company GREISINGER electronic GmbH stored in some form, reproduced, processed,... -
Page 3: Intended Use
_____________________________________________________ _______________________________________________________________________________ 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. The device is to be protected against wetness and soiling and has to be stored and operated only within the permissible environmental conditions and connection data (see “Specification”). -
Page 4: Operating And Maintenance
H49.0.02.6C-06 Operating Manual GMH 3750 Page 4 of 16 _____________________________________________________ _______________________________________________________________________________ 4 Operating and Maintenance • Battery Operation The battery has been used up and needs to be replaced, if „bAt“ are shown in lower display. The device will, however, continue operating correctly for a certain time. -
Page 5: Display- And Button Elements
H49.0.02.6C-06 Operating Manual GMH 3750 Page 5 of 16 _____________________________________________________ _______________________________________________________________________________ 6 Display- and Button Elements ) Display Elements 1 Main Display: Currently measured temperature 2 Auxiliary Display: Display of min, max or hold values Special display elements: 3 Min/Max/Hold: shows if a min., max. or hold value is displayed in the auxiliary display 4 „Offset“... -
Page 6: Device Configuration
H49.0.02.6C-06 Operating Manual GMH 3750 Page 6 of 16 _____________________________________________________ _______________________________________________________________________________ 8 Device Configuration Note: Some menu items will be shown depending on the actual device configuration (e.g. some items are disabled when the logger contains data). Please note the hints by the menu items. - Page 7 H49.0.02.6C-06 Operating Manual GMH 3750 Page 7 of 16 _____________________________________________________ _______________________________________________________________________________ 01,11..91 Base address of device for interface communication Zero point of analogue output: Temperature at -200..850°C / which the analogue output potential should be -328...1562°F -200..850°C / Scale of analogue output : Temperature value at which the analogue output potential should -328...1562°F...
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Page 8: Special Functions
H49.0.02.6C-06 Operating Manual GMH 3750 Page 8 of 16 _____________________________________________________ _______________________________________________________________________________ 9 Special Functions 9.1 Display Resolution Standard setting: 'Auto', i.e. the device automatically switches over to the optimum resolution between .01° and 0.01°. If temperatures to be measured are near the switching threshold, a fixed resolution may be better, e.g. -
Page 9: Average Filter („T.aug")
H49.0.02.6C-06 Operating Manual GMH 3750 Page 9 of 16 _____________________________________________________ _______________________________________________________________________________ 9.5 Average filter („t.AuG“) The filter forms the arithmetic floating average over the entered time. The displayed value will be correspondingly slower in this case. 9.6 Output („Out“) The output can be either used as serial interface (for USB 3100, GRS 3100 or GR S3105 interface converters) or as analogue output (0-1V). -
Page 10: Real Time Clock („Cloc")
H49.0.02.6C-06 Operating Manual GMH 3750 Page 10 of 16 _____________________________________________________ _______________________________________________________________________________ Supported interface functions with 'GMH3000.DLL' : code name / function code name / function Read nominal values Read max. display range Read system status Read unit of display Read min. values... -
Page 11: Probe Connection
H49.0.02.6C-06 Operating Manual GMH 3750 Page 11 of 16 _____________________________________________________ _______________________________________________________________________________ 10 Probe Connection The device is constructed and optimised for the connection of a Pt100 4-wire probe via 4 pole Mini-Din connectors. 4-wire connection Pt100 Figure shows upon probe jack pins It is also possible to connect an 3- or 2-wire probe to the device. -
Page 12: Operation Of Logger
H49.0.02.6C-06 Operating Manual GMH 3750 Page 12 of 16 _____________________________________________________ _______________________________________________________________________________ 12 Operation Of Logger The device supports two different logger functions: manual recording via keypress “Store” (key 6). „Func-Stor“: automatic recording with the selected recording interval/cycle „Func-CYCL“: The logger records 1 measurement result each time... -
Page 13: Automatic Recording With Selectable Logger Cycle Time „Func Cycl
H49.0.02.6C-06 Operating Manual GMH 3750 Page 13 of 16 _____________________________________________________ _______________________________________________________________________________ 12.2 Automatic Recording With Selectable Cycle Time „Func CYCL“ If the logger function “Func CYCL” was activated (see chapter 8 “Device Configuration”), and the logger was started, it automatically records data sets at intervals of the selected logger cycle time The logger cycle time is selectable from 1s to 60min (see chapter 8 “Device Configuration”). -
Page 14: Some Basics Of Precision Temperature Measuring
H49.0.02.6C-06 Operating Manual GMH 3750 Page 14 of 16 _____________________________________________________ _______________________________________________________________________________ 13 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 15: Fault And System Messages
H49.0.02.6C-06 Operating Manual GMH 3750 Page 15 of 16 _____________________________________________________ _______________________________________________________________________________ 14 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... -
Page 16: Specification
H49.0.02.6C-06 Operating Manual GMH 3750 Page 16 of 16 _____________________________________________________ _______________________________________________________________________________ 16 Specification Pt100 4-wire (2 or 3-wire possible) Supported probes According to EN60751 Sensor Curve or with user-sensor curve (table of 50 rows) 4pole Mini-DIN socket Probe connection Measuring Ranges 0,01°C:...
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