User's Manual

Introduction
10
OmiScan Gas Sample Probe
WARNING: Before attaching any OmiScan Gas probe to the test vehicle,
ensure that you have read and understand the safety precautions listed
earlier in this manual.
Exhaust probe
The exhaust probe collects gas samples from the test vehicle exhaust, which are then
analyzed by OmiScan Gas.
The probe connects between the Sample Gas Input fitting (item 2 under ‘Assembling
the OmiScan Gas Analyzer’, page 8) and the test vehicle exhaust pipe. Insert the
probe as far into the vehicle exhaust as possible and secure by attaching the alligator
clip to the end of the exhaust pipe.
WARNING: Take care to avoid contact with the exhaust system when
inserting or removing the exhaust probe. The exhaust system will be hot
and severe burns could occur.
The exhaust probe is supplied with a sealing cap (Part No. OM 4700/23) which must
be fitted over the end of the probe when a leak test is performed. Keep the cap in a
safe place when not in use (see ‘System Checks’, page 35, for further details of a leak
test).