ENMET ISA-44-RAL-OD - Manual (Page 6)

ENMET Corporation ISA-44RAL-OD / ISA-44RAH-OD
2
1.2 ISA-44RAH-OD
The ISA-44RAH-OD is designed to monitor breathing air from cylinders at pressures up to 5000 psi. The
equipment consists of an ISA-44RAL-OD with the addition of a high pressure regulator at the sample air input as
shown in Figure 1a. The high pressure regulator must be plugged into the high pressure line with an appropriate
fitting; the output is connected to the ISA-44RAH-OD by means of a quick release pneumatic fitting. The
operation of the ISA-44RAH-OD is identical with that of the ISA-44RAL-OD, and calibration is also identical; the
high pressure regulator is removed from the sample input and the calibration procedures given in this manual are
employed.
03042-109 Angle Style
Sensor Cable
03042-109 Straight Style
Sensor Cable
Figure 1a: Sample Head Assembly, Typical High Pressure Hook-up
Quick Release
Fittings
Oxygen Cell
and
MOS Sensor
Hydrocarbon
Filter
Pressure
Regulator
Humidifier
(keep filled to
Water Level mark)
Metering
Orifice
Cable to
enclosure
High Pressure
Regulator
N OTE : The high-pressure regulator
is not included in the
ISA-44RAL-OD,
only in the ISA-44RAH-OD