Statox 501 PID Sensor Head Operation Instructions SAFETY ADVICE INTRODUCTION Measuring principle Operation mode Different models DRILLING PLAN, DIMENSIONS, CONSTRUCTION, SCOPE OF DELIVERY INSTALLATION AND ELECTRICAL CONNECTION Caution Installation Electrical connection START UP AND MEASURING MODE CALIBRATION WITH GAS TROUBLESHOOTING...
1 Safety advice The interface is an explosion-proof device certified for group II category 2. Its intended use is to operate a Photo - Ionisation - Sensor (PID) for the detection of volatile organic compounds (VOC). Designed to provide increased safety it is applicable in zone 1 and zone 2. The following safety guidelines must be followed in particular: •...
2.2 Operation mode The Statox 501 PID sensor head operates in the diffusion mode. If you want to operate the Statox 501 PID in the flow mode, please contact your Compur Monitors expert. 2.3 Different models The parameters of the Statox 501 PID interface are set ex works to the requirements of your application.
3 Drilling plan, dimensions, construction, scope of delivery Grounding contact Mounting drill holes for Ф 4 mm bolts Aluminum housing Cable gland for cable Ф 6-11 mm Magnetic pin Blind plug Plastic tool to open sensor Sensor protection cap with gas access through filter membrane Nut holding the protection cap Hall sensor, contact area for the magnetic pin Interface...
(e.g. Type Oelflex 415 CP3 X 0,75). The Statox 501 PID sensor head can be operated in the 3 – wire or 5 – wire mode. Select 3 wire mode if the electrical resistance of the cable loop is < 5 Ω.
501 PID 501 PID 5-wire mode 3-wire mode Electrical connections for Statox 501 PID sensor heads. Faulty connection may destroy the interface! 5 Start up and measuring mode • When connected to power, the LED is flashing green / red alternatingly.
The interface will accept set points between 10 and 100 % of the end of scale value. To achieve best accuracy Compur Monitors recommends to calibrate at the desired alarm threshold value. Calculate the most suitable span gas concentration with this formula:...
A PID sensor will gradually loose sensitivity over time. This process depends on the ambient conditions and the target gas. Therefore regular calibration, lamp cleaning and replacement of consumables is necessary to guaranty accurate measurement. Compur Monitors recommends to hold stock of consumables.
8.1 Lamp cleaning / replacement of consumables 8.1.1 Removing the sensor Open the retaining nut counter clockwise until you can remove it, by pulling it downwards. Unplug the sensor pulling it downwards. Work on the sensor should be performed in a clean environment. Protect the sensor slot by re - installing the retaining nut (see chapter 8.1.4) and closing it with the blind plug.
8.1.2 Polishing the lamp Pull the lamp carefully out of the electrode stack. Never touch its polished front side. Polish the front side with a cotton swap and the polishing powder. Apply tender pressure until you hear a silent squeak. Remove loose polish particles with a fresh swap until the lamp front is absolutely clean.
Installation of the sensor protection cap: The O-Rings (1+2) must be properly positioned in their seats on the sensor protection cap. Take the sensor protection cap in one hand, make the positioning pin of the interface match its rest in the cap, press it upwards and tighten the nut hand tight.
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No licence is implied or in fact granted under the claims of any patent. Instruments are manufactured by Compur Monitors GmbH & Co. KG, Munich.
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