GREISINGER GMH 3251 Operating Manual Download Page 1

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H76.0.02.6C-04

GHM GROUP - Greisinger

GHM Messtechnik GmbH | Hans-Sachs-Str. 26 | 93128 Regenstauf | GERMANY
Tel.: +49 9402 9383-0 |

[email protected]

| www.greisinger.de

Operating manual

Quick-Response

Double / Difference Thermometer

as of version 4.0

GMH 3251



Please carefully read these instructions
before use!

WEEE-Reg.-Nr. DE 93889386



Please consider the safety instructions!



Please keep for future reference!

Summary of Contents for GMH 3251

Page 1: ...ANY Tel 49 9402 9383 0 info greisinger de www greisinger de Operating manual Quick Response Double Difference Thermometer as of version 4 0 GMH 3251 Please carefully read these instructions before use WEEE Reg Nr DE 93889386 Please consider the safety instructions Please keep for future reference ...

Page 2: ...AL FEATURES 10 7 1 TARE FUNCTION 10 7 2 BASE ADDRESS ADR 10 7 3 POWER OFF TIME 10 7 4 ALARM 10 7 5 REAL TIME CLOCK 10 8 OPERATION OF LOGGER 11 8 1 FUNC STOR STORING SINGLE MEASUREMENTS 11 8 2 FUNC CYCL AUTOMATIC RECORDING WITH SELECTABLE LOGGER CYCLE TIME 12 9 OUTPUT 13 9 1 SERIAL INTERFACE 13 9 2 ANALOGUE OUTPUT SCALING WITH DAC 0 AND DAC 1 15 10 ADJUSTMENT 15 10 1 ZERO DISPLACEMENT SENSOR 1 OFS ...

Page 3: ...ctions of the manual have to be understood regarded and followed To be sure that there s no risk arising due to misinterpretation of measured values the operator must have further knowledge in case of doubt the user is liable for any harm damage resulting from misinterpretation due to insufficient knowledge The manufacturer will assume no liability or warranty in case of usage for other purpose th...

Page 4: ...3 Do not use these products as safety or emergency stop devices or in any other application where failure of the product could result in personal injury or material damage Failure to comply with these instructions could result in death or serious injury and material damage 4 This device must not be used at potentially explosive areas The usage of this device at potentially explosive areas increase...

Page 5: ...in Mains operation with power supply When using a power supply please note that operating voltage has to be 10 5 to 12 V DC Do not apply overvoltage Cheap 12V power supplies often have excessive no load voltage We therefore recommend using regulated voltage power supplies Trouble free operation is guaranteed by our power supply GNG10 3000 Prior to connecting the power supply to the mains make sure...

Page 6: ... Only with difference measurement 7 Logg appears if logger function is chosen flashes while logger is running 4 2 Basic Operation On Off min max measuring press short shows the min max value press again hides min max value press 2 sec clears particular value Tare only with DIF display and two connected sensors press short the difference CH1 CH2 will be set to 0 press 2 sec deactivates tare functio...

Page 7: ...the left side of the device 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 Pop up clip closed Pop up clip at position 90 Pop up clip at position 180 Function The device with a closed pop up clip can be plainly laid onto a table or attached to a belt etc The device with pop up clip at position 90 can ...

Page 8: ...ns to standard measuring operation Menu Parameter Values Meaning KEY Menu KEY KEY or rEAd LoGG rEAd Logg Read the single logger data refer chapter 8 1 Func Stor Storing Single Measurements SEt ConF Set Configuration Generic Configurations tYPE ni cr J S T N B E Selection Thermocouple Type K NiCr Ni Type J Fe CuNi Type S Pt10Rh Pt Type T Cu CuNi Type N NiCrSi NiSi Type B Pt30Rh Pt6Rh Type E NiCr Cu...

Page 9: ...rection value for surface measurement of sensor 1 related to ambient temperature of the measuring device See chapter 10 3 oFF Surface correction factor is deactivated 1 000 SEt Set Alarm Settings Of Alarm Function AL AL On Alarm on with buzzer sound no So Alarm on without buzzer sound oFF no alarm function AL CH 1 Alarm input Sensor 1 not when AL oFF CH 2 Alarm input Sensor 2 not when AL oFF CH 1 ...

Page 10: ...ordingly Channel 1 will be addressed by the base address set channels 2 and 3 will have the following addresses Example base address 21 channel 1 21 channel 2 22 channel 3 23 7 3 Power off Time If there won t be pressed any key and no interface communication takes place for the time of the power off time setting P Off the device will be switched off automatically to save battery power If P oFF oFF...

Page 11: ...d data can be viewed either in the display when calling the configuration an additional menu REAd LoGG is displayed see below or by means of the interface and a PC with GSOFT3050 software Please note For the Func Stor logging function it is not allowed to change the sensor after values are stored otherwise invalid data could be read out Max number of measurings 1000 A measuring contains sensor 1 c...

Page 12: ...the time of recording difference sensor 1 sensor 2 current measuring value at time of recording Starting a recording By pressing Store key 6 for 2 seconds the logger operation will be called The display will show By pressing Store again the recording will be initiated After that the display shows St XXXX for a short time whenever a measuring is recorded XXXX is the number of the measuring 1 10000 ...

Page 13: ...3105 up to 5 devices of the GMH 3xxx series can be connected to one interface see also manual of GRS 3105 As a precondition the base addresses of all devices must not be identical make sure to configure the base addresses accordingly refer menu point Adr in chapter 6 To avoid transmission errors there are several security checks implemented e g CRC The following standard software packages are avai...

Page 14: ...x x x 178 Read measuring range unit x x x 179 Read measuring range decimal point x x x 180 Read kind of measuring of sensor x 194 Set display unit x 195 Set decimal point in display x x x 199 Read kind of measuring of display x x x 200 Read min display range x x x 201 Read max display range x x x 202 Read display range unit x x x 204 Read display range decimal point x 208 Read of channels x x 214 ...

Page 15: ...isplacement can be carried out for the measured value value displayed value measured offset Standard setting off 0 0 i e no zero displacement will be carried out Together with the scale correction see below this factor is mainly used to compensate for sensor deviations Input is in the display unit 10 2 Scale Correction Sensor 1 SCL 1 or Sensor 2 SCL 2 This setting influences the scale of the measu...

Page 16: ... device does not react on keypress Battery empty Replace battery Mains operation wrong voltage or polarity Check power supply replace it when necessary System error Disconnect battery and power supplies wait shortly then reconnect Device defective Return to manufacturer for repair Err 1 Measured value above allowable range Check correct thermocouple selected Temperature not within sensor range mea...

Page 17: ...ollection points for small electrical appliances 12 3 Decommissioning When decommissioning connections must not be in a condition that causes the connected evaluation electronics e g interface to trigger unexpected switching operations 13 Specification Thermocouples J K N S T E B Resolution 0 1 C or 1 C 0 1 F or 1 F Measuring range Type K NiCr Ni 220 0 1372 0 C 364 0 2502 0 F Type J Fe CuNi 200 0 ...

Page 18: ... a PC via electrically isolated interface adapter USB3100 USB 3100 N GRS3100 or GRS3105 see accessories Analog output 0 1 Volt freely scaleable resolution 12 bit Power supply 9V battery included in scope of supply as well as additional d c connector diameter of internal pin 1 9 mm for external 10 5 12V direct voltage supply suitable power supply GNG10 3000 Power consumption approx 1 2 mA Output ou...

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