Sensors are seldom sited for
easy access.
Methane and natural gas sensors are normally installed in the roof
peaks and skylight
areas, because methane is lighter than air. Propane sensors
are placed low near the
floor and in service pits because this gas is heavier than
air. Remote calibration
permits each sensor to be calibrated and adjusted without
risking accidents with lifts
and ladders. There is, of course, no need to stop production
and move vehicles out of the
way to access sensors directly. On initial installation, gas supply tubing is installed for
delivering calibration gas to each sensor from a
convenient floor level station. The
two 4-channel Rem-Cal circuit boards in the
DXcalibar or RMcalibarTM boxes permit
each of eight sensor signals (4-20ma) to be finely adjusted.
Test jacks are included on these
Rem-Cal modules for local read out of the raw signal from
each sensor as well as the
calibrated signal, using a hand held milli-ammeter.
Sensors are seldom sited for
easy access.
Methane and natural gas sensors are normally installed in the roof
peaks and skylight
areas, because methane is lighter than air. Propane sensors
are placed low near the
floor and in service pits because this gas is heavier than
air. Remote calibration
permits each sensor to be calibrated and adjusted without
risking accidents with lifts
and ladders. There is, of course, no need to stop production
and move vehicles out of the
way to access sensors directly. On initial installation, gas supply tubing is installed for
delivering calibration gas to each sensor from a
convenient floor level station. The
two 4-channel Rem-Cal circuit boards in the
DXcalibar or RMcalibarTM boxes permit
each of eight sensor signals (4-20ma) to be finely adjusted.
Test jacks are included on these
Rem-Cal modules for local read out of the raw signal from
each sensor as well as the
calibrated signal, using a hand held milli-ammeter.