Alternative �robes
Gas-Tec
26
VIII Alternative probes
An insulated probe handle including filter assembly is supplied for gas leak monitoring as standard .
8.1 Alternative probes
Two sampling systems are available:
1 . An insulated probe handle system for gas leak monitoring
A variety of probe ends can be plugged into the insulated probe handle as follows:
• Standard (coat hanger) probe (A) with a perforated transverse end, which is particularly useful for
walking ground level, surveys . This probe is supplied as standard, complete with two skids (B)
which maintain a small clearance between the probe and the ground .
• A straight probe (C) for pinpointing leaks from pipe fittings, inside ducts or through ventilating bricks
or other apertures, or general atmospheric sampling .
• A carpet probe (D) which can be wheeled along over a smooth surface collecting samples at ground
level .
• Bell housing probe (E) for bore hole applications
2 . Telescopic Probe with polytetrafluroethylene (PTFE) tubing for monitoring volume organic combusti-
bles . The telescopic probe terminates with a straight length of 5 mm diameter stainless steel tubing to
which a variety of probe ends can be fitted . Straight probe extensions are available for collecting bore
hole samples .
To order equipment not supplied as standard see the Spares and accessories (Section XI, p30) .
8.2 Using Gas-Tec in a moving vehicle
Mount the Gas-Tec on a Trigger survey unit to operate from a moving vehicle .
The Trigger Survey System is an integrated system formed when a Gas-Tec is attached (via quick release
fasteners) to a Telegan Trigger Survey unit . The Trigger unit contains a sample boom pump fitted with
monitoring electronics, audible alarms and a Sample Boom Kit .
To order a Trigger Survey unit see the Spares and accessories section (XI, p30) .
A
C
B
D
E