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H70.0.21.6C-01
as of version V1.2
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
Handheld pH / ORP-Meter
GMH 3511
+49 (0) 9402 / 9383-33
Operating Manual
WEEE-Reg.-Nr. DE 93889386
info@greisinger.de
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Table of Contents
Related Manuals for GREISINGER GMH 3511
Summary of Contents for GREISINGER GMH 3511
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Page 1: Operating Manual
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: Table Of Contents
H70.0.21.6C-01 Operating Manual GMH 3511 page 2 of 14 Inhalt 1 GENERAL NOTE ..............................3 2 SAFETY ..................................3 2.1 ..............................3 NTENDED 2.2 ..........................3 AFETY SIGNS AND SYMBOLS 2.3 .............................. 3 AFETY GUIDELINES 3 PRODUCT SPECIFICATION ..........................4 ... -
Page 3: General Note
H70.0.21.6C-01 Operating Manual GMH 3511 page 3 of 14 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
H70.0.21.6C-01 Operating Manual GMH 3511 page 4 of 14 If there is a risk whatsoever involved in running it, the device has to be switched off immediately and to be marked accordingly to avoid re-starting. Operator safety may be a risk if:... -
Page 5: Handling
H70.0.21.6C-01 Operating Manual GMH 3511 page 5 of 14 4 Handling 4.1 Display Main display: pH value, ORP value (mV, mV Display elements to show minimum/maximum/ memorized measuring value Arrows to selected measuring unit mbar Warning signal (low battery or recalibration prompt) -
Page 6: Connections
H70.0.21.6C-01 Operating Manual GMH 3511 page 6 of 14 4.3 Connections interface: connection for galv. Isolated interface adapter (accessory: GRS 3100, GRS3105 or USB3100) BNC socket: connection of pH or ORP electrode (glass electrodes or combination electrodes) Banana sockets: Connection of Pt1000 temperature probe... -
Page 7: Start Operation
H70.0.21.6C-01 Operating Manual GMH 3511 page 7 of 14 5 Start Operation Connect electrodes, turn device on via key. After segment test the device is ready for measuring. Remove protective cap from electrode. (Attention: Cap should contain KCL 3 M or storage solution) 6 Principles of the measurements 6.1 pH measurement... -
Page 8: Measurement
H70.0.21.6C-01 Operating Manual GMH 3511 page 8 of 14 6.3 pH electrode 6.3.1 Design In most cases so-called combination electrodes are used. That means that all needed elements are integrated in a single electrode (including reference electrode). Sometimes even a temperature sensor is integrated. -
Page 9: Calibration Of P Hmeasurement
H70.0.21.6C-01 Operating Manual GMH 3511 page 9 of 14 6.4 Calibration of pH measurement The electrode data of pH electrodes are subject to fluctuation due to ageing and manufacturing tolerances. Therefore it is necessary to check the calibration with buffer solutions before measurements take place. If deviations are too large, a recalibration is necessary. -
Page 10: Configuration
H70.0.21.6C-01 Operating Manual GMH 3511 page 10 of 14 Error messages of pH calibration: Neutral buffer not permissible Always use neutral buffer as first solution - Wrong buffer solution (exception: 1 point calibration) Use new buffer solution - Buffer solution defective... -
Page 11: Output
H70.0.21.6C-01 Operating Manual GMH 3511 page 11 of 14 8 Output The output can be used as serial interface (for USB 3100, USB 3100 N, GRS 3100 or GRS 3105 interface adapters) or as analog output (0-1V). If none of both is needed, we suggest to switch the output off, because battery life then is extended. -
Page 12: Error And System Messages
H70.0.21.6C-01 Operating Manual GMH 3511 page 12 of 14 10 Error and System Messages Display Description What to do? Battery empty Replace battery No display or Mains operation: wrong voltage or polarity Check power supply, replace it when necessary confused... -
Page 13: Specification
H70.0.21.6C-01 Operating Manual GMH 3511 page 13 of 14 12 Specification Measuring ranges 0,00 ... 14,00 pH ORP / mV -1999 … 2000 mV Relating to hydrogen system: -1792 .. +2207 mV (bei 25°C, DIN 38404) Temperature -5,0 ... +150,0 °C, Pt1000 23,0 ... -
Page 14: Notes A: Temperature Influence On Ph Buffer Solutions
H70.0.21.6C-01 Operating Manual GMH 3511 page 14 of 14 13 Notes A: temperature influence on pH buffer solutions GPH buffer capsules for 100 ml buffer solution Capsules for do-it-yourself mixing – unopened capsules can be stored a long time (approx. 3 years) T [°C]...
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