Model S4000TH
6
Periodic Testing/Calibration of Field Devices
Periodic testing/calibrating should be performed per the manufacturer’s recommendations and
instructions. Testing/Calibrating procedures should include, verify integrity of all optical surfaces
and devices
When testing produces results outside of the manufacturer’s specifications, re-calibration or
repair and replacement of the suspect device(s) should be performed as necessary. Calibration
intervals should be independently established through a documented procedure, including a
calibration log, maintained by plant personnel or third party testing services.
Periodic System Verification
The following system verifications should be performed at least annually:
Verify wiring, terminal connections and stability of mounting for all integral safety equipment
including, the following items:
Power
supplies
Control
modules
Field detection devices
Signaling and output devices
Accessories connected to field and signaling devices
Calibration intervals should be independently established through a documented procedure,
including a calibration log maintained by plant personnel or third party testing services.
