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H70.0.21.6C-04
as of version V1.2
Please carefully read these instructions before use!
Please consider the safety instructions!
Please keep for future reference!
GHM GROUP - Greisinger
GHM Messtechnik GmbH | Hans-Sachs-Str. 26 | 93128 Regenstauf | GERMANY
Tel.: +49 9402 9383-0 |
info@greisinger.de
| www.greisinger.de
Operating Manual
Handheld pH / ORP-Meter
GMH 3511
WEEE-Reg.-Nr. DE 93889386
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Related Manuals for GHM GREISINGER GMH 3511
Summary of Contents for GHM GREISINGER GMH 3511
- 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 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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Page 2: Table Of Contents
H70.0.21.6C-04 Operating Manual GMH 3511 page 2 of 14 Content GENERAL NOTE ..............................3 SAFETY ..................................3 ............................... 3 NTENDED ..........................3 AFETY SIGNS AND SYMBOLS .............................. 3 AFETY GUIDELINES PRODUCT SPECIFICATION ..........................4 ......................4 PERATION AND MAINTENANCE ADVICE HANDLING ................................ -
Page 3: General Note
H70.0.21.6C-04 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. Mounting, start-up, operating, maintenance and removing from operation must be done by qualified, specially trained staff that have carefully read and understood this manual before starting any work. -
Page 4: Product Specification
H70.0.21.6C-04 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: - there is visible damage to the device - the device is not working as specified - the device has been stored under unsuitable conditions for a longer time. -
Page 5: Handling
H70.0.21.6C-04 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) atc arrow: indicates if temperature sensor is AL Logg... -
Page 6: Connections
H70.0.21.6C-04 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 Electrodes with integrated temperature sensor: the banana plug is connected from outside Separately lead through reference electrode:... -
Page 7: Start Operation
H70.0.21.6C-04 Operating Manual GMH 3511 page 7 of 14 5 Start Operation Connect electrodes, turn device on via key. Store Menu Quit 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 The pH value specifies the acid or alkaline behavior of aqueous solutions. -
Page 8: P Helectrode
H70.0.21.6C-04 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. The picture on the right shows an electrode without temperature sensor. -
Page 9: Calibration Of P Hmeasurement
H70.0.21.6C-04 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-04 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 Clean electrode and calibrate again, if error occurs - Electrode defective again ->... -
Page 11: Output
H70.0.21.6C-04 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. When operating with external supply or connected interface and measurement at solutions with earth connection, there may appear distortions or deviations of the measuring. -
Page 12: Accuracy Check / Adjustment Service
H70.0.21.6C-04 Operating Manual GMH 3511 page 12 of 14 9 Accuracy Check / Adjustment Service You can send the device to the manufacturer for adjustment and inspection. Calibration certificate - DKD certificate - official certifications: If the measuring instrument is supposed to receive a calibration certificate, it has to be sent to the manufacturer (declare test levels, e.g. -
Page 13: Disposal Instructions
H70.0.21.6C-04 Operating Manual GMH 3511 page 13 of 14 11.2 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. -
Page 14: Notes A: Temperature Influence On Ph Buffer Solutions
H70.0.21.6C-04 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] GREISINGER GPH 4.0 3.99...
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