Filter
Top Products
Electrical Connections 3098 Technical Manual
3-14
3.7 Post-installation checks
After installation, the following procedure will indicate to a high degree of confidence that the meter is operating correctly.
a. Electrical Check
Measure the current consumption and the supply voltage at the meter amplifier. This should be within the following
limits:
15.5V to 33V dc (Safe Areas)
15.5V to 21.5 dc (Hazardous Areas)
17mA ±1mA (Safe and Hazardous Areas)
b. Stability Check
Check the stability of the frequency output signal using a period meter on a 1000 cycle count. The measurement
scatter should be within ±2ns. If this value is exceeded, it is likely that dirt is present on the sensing element. This test
may be performed at any gas density, provided that the latter is not changing.