What is the recommended maintenance interval for LEDPOINT® PRS?
LEDPOINT®PRS units th emselves are self checking and report faults back to the control card so that sensor maintenance is not required. This is supported by field results which have shown, within allowable measurement uncertainty, no change in LEDPOINT®PRS calibration after 3 years field use. However the LEDPOINT®PRS will be part of a larger system which includes cables, connectors etc. which may change with time depending on age, condition and the specific environment. Hence system checking will be required. We recommend starting checking at 6-month intervals and extending this past 12 months as specific site experience is obtained. Note that this is in contrast to any installation, which uses sensors, optical or catalytic, with sinter filters whose functionality cannot be proven without applying a check gas due to the uncertainty of when the sinter filter will be blocked and hence this leads to a fail unsafe situation. In such installations checking at 3-month intervals seems prudent
