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H70.0.11.6C-04
as of version V1.4
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
with data logger
GMH 3551
WEEE-Reg.-Nr. DE 93889386
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Related Manuals for GHM Greisinger GMH 3551
Summary of Contents for GHM Greisinger GMH 3551
- Page 1 H70.0.11.6C-04 Operating Manual Handheld pH / ORP-Meter with data logger GMH 3551 as of version V1.4 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.
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Page 2: Table Of Contents
H70.0.11.6C-04 Operating Manual GMH 3551 page 2 of 20 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
H70.0.11.6C-04 Operating Manual GMH 3551 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
H70.0.11.6C-04 Operating Manual GMH 3551 page 4 of 20 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
H70.0.11.6C-04 Operating Manual GMH 3551 page 5 of 20 4 Handling 4.1 Display Main display: pH value, ORP value (mV, mV rH value 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
H70.0.11.6C-04 Operating Manual GMH 3551 page 6 of 20 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
H70.0.11.6C-04 Operating Manual GMH 3551 page 7 of 20 5 Start Operation Connect electrodes, turn device on via key. Store Menu Quit After segment test the device displays some configuration: if zero point or slope correction is active (p.r.t chapter 7 „... -
Page 8: R Hmeasurement
H70.0.11.6C-04 Operating Manual GMH 3551 page 8 of 20 6.3 rH measurement The rH value is a calculated value of a pH and an ORP measurement. For example it is used to describe the anti oxidative effect of food. This is a measure for the ability of food to reduce harmful free radicals. -
Page 9: Ph Electrode Suggestions
H70.0.11.6C-04 Operating Manual GMH 3551 page 9 of 20 Any material depositing on the measuring membrane or the diaphragm will influence the measurements and have to be removed at regular intervals. This can be done by means of automatic cleaning equipment. - Page 10 H70.0.11.6C-04 Operating Manual GMH 3551 page 10 of 20 Carefully remove electrode safety cap (Attention! Contains 3 mol KCl!). Rinse electrode with distilled water and dry it carefully. How to start calibration: press key for 2 seconds. The display will prompt you to measure the first calibration solution.
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Page 11: Configuration
H70.0.11.6C-04 Operating Manual GMH 3551 page 11 of 20 Error messages of pH calibration: Neutral buffer not permissible Clean electrode and calibrate again, if error occurs - Electrode defective again -> replace electrode Always use neutral buffer as first solution... - Page 12 H70.0.11.6C-04 Operating Manual GMH 3551 page 12 of 20 Menu Parameter Value Description Store Store Menu Quit Menu Quit bzw. rEAd Logg: Read manual recordings, Store Store Menu p.r.t. chapter 8.1 Manual Recording (“Func-Stor”) Quit Menu Quit Set Configuration: General configurations Input: Selection of measured variable Arrow „rH“...
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Page 13: Data Logger
H70.0.11.6C-04 Operating Manual GMH 3551 page 13 of 20 Menü Parameter Werte Bedeutung Store Store Menu Quit Menu Quit bzw. Set Alarm: Settings for alarm function Store Store Menu Quit Menu Quit On / No.So Measuring channel pH/mV/rH: alarm on with buzzer / without buzzer No alarm function for measuring channel pH/mV/rH e.g. -
Page 14: Automatic Recording With Selectable Cycle Time ("Func Cycl")
H70.0.11.6C-04 Operating Manual GMH 3551 page 14 of 20 Store Confirm input with Menu Quit is displayed if logger storage is full. b) Read manual recordings: Saved data sets can be viewed both with PC-software GSOFT3050 and directly on the device display. -
Page 15: Output
H70.0.11.6C-04 Operating Manual GMH 3551 page 15 of 20 If you try to switch off the device while cyclic recording is active you will be asked whether the recording should really be stopped. The device can only be switched off if the recording is stopped. -
Page 16: Analog Output
H70.0.11.6C-04 Operating Manual GMH 3551 page 16 of 20 9.2 Analog output Keep in mind not to connect low-resistive loads to the output, otherwise the output value will be wrong and battery life is decreased. Loads above approx. 10kOhm are uncritical. -
Page 17: Alarm („Al.")
H70.0.11.6C-04 Operating Manual GMH 3551 page 17 of 20 Store Change between the different calibration data sets Menu Quit Store Quit calibration data sets display Menu Quit 1-point calibration: slope acid = slope alkaline = 59.16mV/pH is assumed 2-point calibration: slope acid = slope alkaline = determined slope 3-point calibration: slope acid and slope alkaline are determined separately 12 Alarm („AL.“) -
Page 18: Error And System Messages
H70.0.11.6C-04 Operating Manual GMH 3551 page 18 of 20 15 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 19: Specification
H70.0.11.6C-04 Operating Manual GMH 3551 page 19 of 20 17 Specification Measuring ranges 0,00 ... 14,00 pH -1999 … 2000 mV ORP / mV Relating to hydrogen system: -1792 .. +2207 mV (bei 25°C, DIN 38404) 0,0 … 70,0 rH Temperature -5,0 ... -
Page 20: Notes A: Temperature Influence On Ph Buffer Solutions
H70.0.11.6C-04 Operating Manual GMH 3551 page 20 of 20 18 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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