Detcon FP-100 Manuel d'utilisateur télécharger pdf (Page 22)

Model FP-100

FP-100 Instruction Manual Rev. 0.0 Page 18 of 30

4. Service and Maintenance

Calibration Frequency

In most applications, quarterly to biannual zero and span calibration intervals will assure reliable detection.

However, industrial environments differ. Upon initial installation and commissioning, close frequency tests

should be performed, weekly to monthly. Test results should be recorded and reviewed to determine a suitable

calibration interval.

Visual Inspection

The Sensor should be inspected annually:

 Inspect the sensor for signs of corrosion, pitting, and water damage.

 Remove the Splash Guard and inspected it for blockage, broken, cracked, or missing pieces.

 Inspect the flame arrestor on the Bottom Housing for corrosion or blockage.

 Inspect inside of the Junction Box for signs of water accumulation, signs of corrosion.

 Check wiring to ensure there are no loose or pinched wires and all connections are clean and tight.

Condensation Prevention Packet

A moisture condensation packet should be installed in every explosion proof Junction Box. The moisture

condensation prevention packet will prevent the internal volume of the J-Box from condensing and

accumulating moisture due to day-night humidity changes. This packet provides a critical function and should

be replaced annually. Detcon’s PN is 960-202200-000.

4.1 Replacement of Plug-in Sensor

NOTE: It is necessary to remove power while changing the plug-in sensor in order to maintain

area classification, since the Plug-In Sensor is not intrinsically safe.

NOTE: Only replace the FP-100 plug-in sensor with an authorized FP-100 plug-in Sensor.

1. Use a 1/8” Allen wrench to release the locking cap head screw that locks the ITM and Bottom

Housing together (One turn will suffice - Do not remove cap head screw completely).

2. Unthread and remove the Bottom Housing and Splash Guard from the ITM.

3. Gently pull the plug-in sensor out of the ITM. Orient the new plug-in sensor so that it matches with

the female connector pins. Use the alignment marks provided to assure alignment is correct. When

properly aligned, press the sensor in firmly to make the proper connection.

4. Thread the Bottom Housing onto the ITM to a snug fit and tighten the locking cap head screw using

the 1/8” Allen wrench. Reinstall the Splash Guard.

5. Check and perform zero calibration and span calibration as per Section 3.2 Calibration.

4.2 Replacement of ITM

1. If the sensor has the 100 Series Display option installed, unplug the display from the terminal board by

pulling the display out of the junction box. The display option plugs directly into the terminal board’s

Beau Connector.

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Detcon FP-100 Manuel d'utilisateur Page 22