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Instruction Manual
Do not use if the unit has been dropped or the enclosure has been damaged. Contact InstruTech for return
authorization and instructions for returning the product to InstruTech for evaluation.
Use yttria coated filaments with air and inert gases such as N
available for use with gases not compatible with yttria filaments.
The most common cause of all vacuum gauge failures is contamination of the sensor. Noisy or erratic readings
and total gauge failure are possible indications of gauge contamination. Contamination can generally be
characterized as either:
A) A physical or chemical reaction of process gases with the sensor element. A different gauge may be
considered if neither yttria coated nor tungsten filament sensor materials are compatible with your
application.
B) An accumulation of material on the sensor element. In this case, performing the degas function of the
instrument may resolve the issue.
Safety Precautions - CVG101 service and operation
2.3
Refer to the CVG101 convection gauge User Manual and information listed below for safe operation of the
device. Ensure that the vacuum port on which the CVG101 vacuum gauge is mounted is electrically grounded.
Remove cable to the unit before attempting to service the gauge.
Remove cable to the unit if a cable or plug is damaged or the product is not operating normally according to this
User Manual. Contact qualified InstruTech service personnel for any service or troubleshooting condition that
may not be covered by this User Manual.
It is important that the product be periodically inspected for sound electrical connections and equipment
grounding. Do not use if the equipment grounding or electrical insulation has been compromised.
Do not use if the unit has been dropped. Contact InstruTech for further instructions regarding evaluation of the
damaged sensor.
Electrical Conditions
2.4
WARNING! When high voltage is present in any vacuum system, a life threatening electrical shock hazard
may exist unless all exposed electrical conductors are maintained at earth ground potential. This applies to all
products that come in contact with the gas contained in vacuum chambers. An electrical discharge within a
gaseous environment may couple dangerous high voltage directly to any ungrounded conductor of electricity.
A person could be seriously injured or killed by coming in contact with an exposed, ungrounded electrical
conductor at high voltage potential. This condition applies to all products that may come in contact with the gas
inside the vacuum chamber (vacuum/pressure containment vessel).
InstruTech
, argon, etc. Optional tungsten filaments are
2
IGM402 Hornet
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Troubleshooting
