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Summary of Contents for PST GPR-1000
- Page 1 Hazardous Location Analyzer Field Servicing Guide Oxygen Analyzers PST-FSG-3015-00 ProcessSensing.com 07/2024...
- Page 2 For contact information, visit ProcessSensing.com Analytical Industries Inc (Aii) is part of the Process Sensing Technologies Group plc (PST). This document is the property of Process Sensing Technologies and may not be copied or otherwise reproduced, communicated to third parties, nor stored in any Data Processing System without the express written authorization of Process Sensing Technologies.
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Page 3: Start Here
Here, you will find a list of serviceable parts for each of our analyzers as well as instructions for safe replacement. Please ensure that the parts that you are replacing match the serial numbers that were provided by PST. Please read the safety information below. -
Page 4: Serviceable Parts
This field servicing guide applies only to PST branded products with a serial number starting from: 306737869. Before replacing any parts, ensure that the serial number and certification match the documents provided by PST. Part replacement instructions can only be carried out on the units listed below. -
Page 5: Replacing The Main Pcb
Hazardous Location Analyzer Field Servicing Guide Oxygen Analyzers A. Replacing the Main PCB This section applies to the analyzers listed on page 4. 1. To remove the front enclosure, loosen the enclosure screws with a flat 6. Place the new main PCB then connect the LCD ribbon cable to the screwdriver or lift the latches. -
Page 6: Replacing The Power Pcb
If there is damage to any components, the integrity of the Exd protection may be compromised. Figure 5: Wiring for loop Figure 6: Wiring for AC/DC In this event, contact PST immediately. powered unit powered units Figure 4: Location of enclosure 13. -
Page 7: Replacing The Battery
Oxygen Analyzers C. Replacing the Battery This section applies to the GPR-1000, GPR-1100, GPR-1200 and GPR-2000 portable analyzers. 1. To remove the front enclosure, loosen the enclosure screws with a flat 5. Remove the old battery and place the new one in the enclosure, screwdriver, (see Figure 9). - Page 8 Hazardous Location Analyzer Field Servicing Guide Oxygen Analyzers D. Replacing the Top Sensor Assembly This section applies to the GPR-1100, GPR-1200, GPR-x500, GPR-x800 (A)IS analyzers. 1. Loosen the enclosure screws with a flat screwdriver to remove the 5. Position the new top sensor assembly, ensuring the correct orientation. front enclosure or lift the latches.
- Page 9 (See Figure 21) 4. Plug the new sensor cable to the sensor and main PCB. For GPR-1000 and GPR-2000, ensure the wire is fed into the smaller enclosure through the grommet before plugging back Figure 14: Sensor assembly connector to the PCB.
- Page 10 Hazardous Location Analyzer Field Servicing Guide Oxygen Analyzers F. Replacing the Coalescing Filter Element This section applies to the GPR-1200 and GPR-2000 portable analyzers. 1. Locate the coalescing filter and drain all the liquid from the housing bowl. 2. Ensure there is no pressure in the housing and unscrew the housing bowl from the housing. 3.
- Page 11 Hazardous Location Analyzer Field Servicing Guide Oxygen Analyzers G. Replacing the LCD Display Assembly This section applies to the GPR-x500 analyzer series. 1. Lift the latches to access the the LCD display assembly inside the box 7. Temporarily remove the short standoffs on the new LCD display enclosure.
- Page 12 Hazardous Location Analyzer Field Servicing Guide Oxygen Analyzers H. Replacing the H2S Scrubber This section applies to the analyzers listed on page 4. 1. Locate the H2S scrubber and release from the tubing by unscrewing the fittings at both ends (see Figure 24).
- Page 13 Hazardous Location Analyzer Field Servicing Guide Oxygen Analyzers I. Replacing the H2S Scrubber Media This section applies to the GPR-1200, GPR-2000, GPR-x500 and GPR-x800 (A)IS analyzers. 1. Locate the H2S scrubber and release it from the tubing by unscrewing the fittings at both ends.
- Page 14 Hazardous Location Analyzer Field Servicing Guide Oxygen Analyzers J. Replacing the Sensor Seal This section applies to the GPR-1100 and GPR-1200, GPR-x500 and GPR-x800 (A)IS analyzers. 1. To remove the front enclosure, loosen the enclosure screws with a flat 6. Position the top sensor assembly, ensuring the correct orientation. screwdriver or unlock the latches to open the box enclosure (see Figure 9).
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Page 15: Replacing The Oxygen Sensor
Hazardous Location Analyzer Field Servicing Guide Oxygen Analyzers K. Replacing the Oxygen Sensor This section applies to all units listed on page 4. 1. Loosen the enclosure screws with a flat screwdriver to remove the 6. Remove the grounding tape from the oxygen sensor and quickly replace front enclosure or unlock the latches to open the box enclosure (see the top sensor assembly, ensuring the correct orientation. - Page 16 ProcessSensing.com...
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