T02.0.0X.6C-09 Mounting and operating manual pH-measuring transducer GPHU 014 MP Read carefully before first operation! Consider safety instructions! Keep for future reference! WEEE-Reg.-Nr. DE 93889386 GHM Messtechnik GmbH • Standort Greisinger Hans-Sachs-Str. 26 • 93128 Regenstauf • GERMANY +49 (0) 9402 / 9383-0 +49 (0) 9402 / 9383-33 info@greisinger.
T02.0.0X.6C-09 Manual for connection and operation GPHU 014 MP Page 2 von 12 Contents 1 SAFETY ...................................................................................................................................................................2 1.1 GENERAL NOTE ..................................................................................................................................................2 1.2 INTENDED USE ..................................................................
T02.0.0X.6C-09 1.4 Manual for connection and operation GPHU 014 MP Page 3 von 12 Safety signs and symbols Warning notices are marked in this manual as shown below: Caution! This symbol warns of imminent danger, death, serious injuries and significant damage to property at non-observance. Attention! This symbol warns of possible dangers or dangerous situations which can provoke damage to the device or environment at non-observance.
T02.0.0X.6C-09 1.6.2 Manual for connection and operation GPHU 014 MP Page 4 von 12 During normal operation Whenever there may be a risk whatsoever involved in running it, the device has to be switched off immediately and to be marked accordingly to avoid re-starting.
T02.0.0X.6C-09 Manual for connection and operation GPHU 014 MP Page 5 von 12 3 Installation and Commissioning 3.1 General installation instructions Loosen screws (A). Remove cover (B) Wall mounting screws (C) are not included. The mounting-hole-diameter is 4.2 mm. See pattern drilling above (50 x 70 mm). Release the screw (a). Unplug the connector. Release the connection sealing, cable fitting (b), shim (c) and sealing-ring (d). Pull out the connection socket (f).
T02.0.0X.6C-09 Manual for connection and operation GPHU 014 MP Page 6 von 12 5 Principles of the measurements 5.1 pH measurement The pH value specifies the acid or alkaline behavior of aqueous solutions. Solutions with a pH values below 7 are acid (the more below 7 the more acid), values higher than 7 mean alkaline and pH = 7 means neutral.
T02.0.0X.6C-09 Manual for connection and operation GPHU 014 MP Page 7 von 12 Electrodes have to be stored in a way that they are kept wet. An adequate solution is to store them with suitable protective cap filled with KCl 3 M. Please consider also the instructions in the electrodes manual! 5.2.3 pH electrode suggestions Different applications require different electrodes 1. Measurements in low-ion media (rain water, aquarium water, VE-waters) GE 106 BNC (as of 25 µS/cm) 2.
T02.0.0X.6C-09 6.4 Manual for connection and operation GPHU 014 MP Page 8 von 12 Calibration of the first point Remove the electrode safety cap carefully. Contains 3 mol KCl! Rinse electrode with distilled water and dry. Place electrode to the pH 7.0 buffer solution. If available, temperature probes, too).
T02.0.0X.6C-09 Manual for connection and operation GPHU 014 MP Page 9 von 12 7 Temperature Compensation Temperature can be compensated automatically when temperature probe is connected. Or manually. 7.1 Automatic Temperature Compensation As soon as a Pt1000 temperature probe is connected and the temperature is within the temperature measuring range the transducer activates the automatic temperature compensation (ATC). The display now shows an arrow pointing to "ATC".
T02.0.0X.6C-09 Manual for connection and operation GPHU 014 MP Page 10 von 12 8 Error and System Messages Display Description Possible fault cause Remedy PH value is out of the transduc- Transducer is unsuitable for applicaers measuring range. tion. Calibration is wrong. FE 1 Measuring values exceeding measuring range Recalibrate the transducer. Manual temp.comp: enter the right value. Temperature of temperature compensation is different to the real temperature.
T02.0.0X.6C-09 Manual for connection and operation GPHU 014 MP Page 11 von 12 9 Decommissioning, Reshipment and disposal 9.1 Decommissioning Always disconnect the device before from its supply before decommission e.g. at fuse. Valid general safety requirements shall be observed. Please also make sure that connected Loads are disconnected also and are in a safe state. 9.
T02.0.0X.6C-09 Manual for connection and operation GPHU 014 MP Page 12 von 12 10 Specification Measuring range Output signal Accuracy: device at nominal temperature Display Output signal Connection Electric isolation Auxiliary energy: supply voltage Reverse voltage protection Perm. impedance at 4-20mA Permissible load at 0-...
