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H83.0.01.6C-06
as of version 1.9
Please carefully read these instructions before use!
Please consider the safety instructions!
Please keep for future reference!
GHM Messtechnik GmbH - Standort Greisinger
D-93128 Regenstauf, Hans-Sachs-Straße 26
+49 (0) 9402 / 9383-0
Conductivity measuring device
water-proof, with data logger
GMH 5450
+49 (0) 9402 / 9383-33
Operating manual
WEEE-Reg.-Nr. DE 93889386
info@greisinger.de
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Summary of Contents for GREISINGER GMH 5450
- Page 1 Please carefully read these instructions before use! Please consider the safety instructions! Please keep for future reference! WEEE-Reg.-Nr. DE 93889386 GHM Messtechnik GmbH - Standort Greisinger D-93128 Regenstauf, Hans-Sachs-Straße 26 +49 (0) 9402 / 9383-0 +49 (0) 9402 / 9383-33 info@greisinger.de...
- Page 2 H83.0.01.6C-6 Operating manual GMH 5450 page 2 of 20 _____________________________________________________ _____________________________________________________________________________ Index GENERAL NOTE ..............................3 SAFETY ..................................3 ............................... 3 NTENDED ..........................3 AFETY SIGNS AND SYMBOLS .............................. 3 AFETY GUIDELINES PRODUCT SPECIFICATION ..........................4 ..............................4 COPE OF SUPPLY ......................
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Page 3: General Note
H83.0.01.6C-6 Operating manual GMH 5450 page 3 of 20 _____________________________________________________ _____________________________________________________________________________ 1 General Note Read this document carefully and get used to the operation of the device before you use it. Keep this document within easy reach near the device for consulting in case of doubt. -
Page 4: Product Specification
Product Specification 3.1 Scope of supply The scope of supply includes: GMH 5450 with 2 AAA batteries Operating manual Short form manual 3.2 Operation and maintenance advice 1. Battery operation: If ‘bAt’... -
Page 5: Handling
H83.0.01.6C-6 Operating manual GMH 5450 page 5 of 20 _____________________________________________________ _____________________________________________________________________________ 4 Handling 4.1 Display elements Main display: conductivity (mS/cm, µS/cm) resistivity (kΩcm, MΩcm) TDS / total dissolved solids (mg/l) salinity (SAL) 2 Secondary display: measuring value temperature 3 Arrows to selected measuring unit... -
Page 6: C Onnections
H83.0.01.6C-6 Operating manual GMH 5450 page 6 of 20 _____________________________________________________ _____________________________________________________________________________ 4.3 Connections Universal output: interface, supply, analog output (see chapter 9 “Universal Output”) 7-pole bayonet socket: connection for electrode / measuring cell and temperature probe 4.4 Pop-up clip Handling: •... -
Page 7: Start Operation
H83.0.01.6C-6 Operating manual GMH 5450 page 7 of 20 _____________________________________________________ _____________________________________________________________________________ 5 Start Operation Connect electrodes, turn device on via key. After segment test the device displays some information on its configuration: if zero point or slope correction is active... -
Page 8: R Esistivity Measurement
H83.0.01.6C-6 Operating manual GMH 5450 page 8 of 20 _____________________________________________________ _____________________________________________________________________________ 6.4 Resistivity measurement • • The resistivity is the reciprocal value of the conductivity and the device displays it in kOhm cm (MOhm cm). Range CELL - rAnG 0.10 - 50.00 kOhm•cm 0.1 - 500.0 kOhm•cm... -
Page 9: E Lectrodes / Measuring Cells
H83.0.01.6C-6 Operating manual GMH 5450 page 9 of 20 _____________________________________________________ _____________________________________________________________________________ 6.7 Electrodes / measuring cells 6.7.1 Assignment bayonet-connector device pin assignment 1: electrode I+ 2: electrode U+ 3: electrode U- 4: electrode I- 5: temperature sensor 6: temperature sensor 7: not connected 6.7.2 Design and selection... -
Page 10: Configuration
H83.0.01.6C-6 Operating manual GMH 5450 page 10 of 20 _____________________________________________________ _____________________________________________________________________________ is the value input at the menu “t.Lin”. conductivity at temperature T1 conductivity at temperature T2 7 Configuration Some menu points depend on current device settings (e.g. some points are locked if logger memory contains data sets). - Page 11 H83.0.01.6C-6 Operating manual GMH 5450 page 11 of 20 _____________________________________________________ _____________________________________________________________________________ REF.S: Choice of standard reference solutions for automatic adjustment/cal. 1413 µS/cm Reference solution 0.01 M KCL 2760 µS/cm 0.02 M KCL 12.88 mS/cm 0.1 M KCL 50 mS/cm Sea-water reference solution KCL 111.8 mS/cm...
- Page 12 H83.0.01.6C-6 Operating manual GMH 5450 page 12 of 20 _____________________________________________________ _____________________________________________________________________________ Menu Parameter Value Description Set Output: Configuration of universal output Interface and analog output off -> minimal power consumption SEr: Serial interface activated dAC: Analog output activated 01,11..91 Base address for serial interface communication 0.0000 µS/cm...
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Page 13: Data Logger
H83.0.01.6C-6 Operating manual GMH 5450 page 13 of 20 _____________________________________________________ _____________________________________________________________________________ 8 Data Logger No logger operation possible with auto-range! The measuring range has to be selected explicitly – see chapter 7 “Configuration” – The device supports two different logger functions: Manual recording by keypress “store”... -
Page 14: A Utomatic Recording With Selectable Cycle Time "F Unc Cycl
H83.0.01.6C-6 Operating manual GMH 5450 page 14 of 20 _____________________________________________________ _____________________________________________________________________________ Clear the latest data set Confirm selection and quit menu “Clear” 8.2 Automatic recording with selectable cycle time “Func CYCL” If logger function “Func CYCL” is selected (see “Configuration”) the device will automatically record measuring values at intervals of the set cycle time. -
Page 15: Universal Output
H83.0.01.6C-6 Operating manual GMH 5450 page 15 of 20 _____________________________________________________ _____________________________________________________________________________ 9 Universal Output The output can be used either as serial interface (for USB 5100 interface converter) or as analog output (0-1V). If the output is not needed, it is strongly recommended to deactivate it (Out oFF) to lower power consumption. -
Page 16: Adjustment Of Temperature Input
H83.0.01.6C-6 Operating manual GMH 5450 page 16 of 20 _____________________________________________________ _____________________________________________________________________________ 10 Adjustment of temperature input The temperature input can be adjusted with offset and scale. A reasonable adjustment presumes reliable references (e.g. ice water, controlled precision water bath, etc.). -
Page 17: C Alibration Interval (C.i Nt )
H83.0.01.6C-6 Operating manual GMH 5450 page 17 of 20 _____________________________________________________ _____________________________________________________________________________ 12 GLP GLP (Good Laboratory Practice) includes regular check of devices and accessories. For pH measurements it is highly important to ensure correct pH calibration. The device provides the following functions to help with this. -
Page 18: Alarm ("Al.")
H83.0.01.6C-6 Operating manual GMH 5450 page 18 of 20 _____________________________________________________ _____________________________________________________________________________ 13 Alarm (“AL.”) There are 3 possible settings: off (AL.oFF), on with buzzer (AL.on), on without buzzer (AL.no.So). Alarm is given in the following cases (if alarm active, AL.on or AL.no.So): Lower alarm boundary (AL. -
Page 19: Error And System Messages
H83.0.01.6C-6 Operating manual GMH 5450 page 19 of 20 _____________________________________________________ _____________________________________________________________________________ 17 Error and System Messages Error messages for measurement Description What to do? Battery empty Replace battery No display or confused Mains operation: wrong voltage or polarity Check power supply, replace it if necessary... -
Page 20: D Isposal Instructions
H83.0.01.6C-6 Operating manual GMH 5450 page 20 of 20 _____________________________________________________ _____________________________________________________________________________ 18.2 Disposal instructions Batteries must not be disposed in the regular domestic waste but at the designated collecting points. The device must not be disposed in the unsorted municipal waste! Send the device directly to us (sufficiently stamped), if it should be disposed.
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