Model S4100C
27
7.5 Duct Mounting Plate (P/N 10041 Dash-1 or –2)
The Duct Mounting Plate is a rectangular plate measuring 73 x 116mm (2.88” x 4.56”)
containing four captive mounting screws (6-32 UNC), and fitted with a Neoprene O-
ring seal. The sensor is mounted in a 1 3/16-18 UNEF threaded hole in the centre of
the plate. The assembly is ideally suited to the monitoring of ducted air for living
quarters in large offshore modules. Note that the sensor should be mounted pointing
down, protected for excessive air velocity and in a position to facilitate recalibration.
7.6 Portable Purge Calibrator – Model 1400150
General Monitors Portable Purge Calibrator is a compact, accurate and safe field
calibration system.
No hazardous gas to handle – The Calibrator is filled with a Gas/Air mixture below the
Lower Explosion Level. (Standard mixture is 50% LEL).
Known Gas/Air Mixture – Eliminate the chance of error in field calibration
Hose and Cup Adapter – Permits you to calibrate your sensors without dismounting
them.
Available Gases – Premixed calibration gases at approximately 50% LEL.
Butane C
4
H
10
Hydrogen H
2
Methane CH
4
Propane C
3
H
8
Maximum Permissible Pressure in the lecture bottle is 1200 psia
Spare Gas Bottles – Order Part No. 1400155 and specify gas. Bottles are
inexpensive and may be returned for refilling.