Field Service Commissioning Cal Checklist - Ohmart Vega W-4510 Technical Reference Hardware Manual

Installation

Field service commissioning cal checklist

In many U.S. installations, an Ohmart Field Service Engineer commissions the gauge. To
reduce service time and costs, use this checklist to ensure the gauge is ready for commission
before the Field Service Engineer arrives:
Mount the source holder and detector per the Ohmart certified drawings.
Allow access for future maintenance.
Make all wiring connections per the certified drawings and the "Wiring the Equipment"
section in this manual. Tie in the wiring from the Smart Pro analog output to the
DCS/PLC/chart recorder.
Ensure that the AC power to the W-4510 Weigh Scale is a regulated transient-free power
source. UPS type power is the best.
If using DC power, verify that the ripple is less than 100mV.
Note
The equipment warranty is void if there is damage to the W-4510 Weigh Scale due to
incorrect wiring not checked by the Ohmart Field Service Engineer.
Have process ready for calibration.
When possible, it is best to have process available near both the low and high end of the
measurement span. A density change of at least 0.1SpG is a common requirement.
When possible, have the material that you use for periodic recalibration of the gauge
available. Frequently this is water.
If you cannot meet any of these process conditions, you can still calibrate the gauge.
However, it is not as accurate.
Do not remove the lock on the source holder. Notify Ohmart Field Service if there is damage
to the lock or it is missing.
40 W-4510 Weigh Scale Technical Reference Manual