Blocked Flow Detection of Sample Line
Units equipped with the pump or air aspirator options are
supplied with a flow detector. This flow detector activates the
fault relay when insufficient flow exists for proper gas detection.
Mounting the Air-line Toxgard II Monitor
"
WARNING
These units must not be located in areas which may contain a
flammable mixture of gas and air; otherwise, an explosion may occur.
"
CAUTION
Protect the Toxgard II Monitor from extreme vibration. Do not mount the
sensing head in direct sunlight as this may cause the sensor to overheat.
1. Using suitable hardware (not supplied) mount the Toxgard II
monitor to any flat surface; allow room to open the door.
2. Connect the source of compressed air being monitored to
the pressure regulator (fittings not included). Install the
regulator as close as possible to the sample take-off.
• The maximum regulator inlet pressure is 300 PSI.
• The regulator outlet pressure should be set to a nominal
10 PSI.
NOTE: An in-line filter trap (P/N 626967 or equivalent) is
recommended to prevent clogging of the flow
system due to air line contamination, such as oil, dirt
or moisture.
"
CAUTION
Do not exceed 300 pounds maximum inlet pressure; otherwise,
damage to the unit may occur.
3. Ensure the pressure regulator is fully counter-clockwise to
reduce the initial pressure to the unit.
Flow Block
The Toxgard II Monitor equipped with the flow block option can
be used to allow a sample to be delivered from a pressurized
stream to the Toxgard II unit. Inlet pressure to the flow block
should not exceed 10 PSI.
Mounting the Toxgard II Remote Sensor Module
The Remote Sensor Module:
Chapter 1, Set-up
1-9
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