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Model 240 Quick Start Guide
Safety Precautions
Observe these general safety precautions during all phases of
instrument operation, service, and repair. Failure to comply with
these precautions or with specific warnings in the user’s manual
violates safety standards of design, manufacture, and intended
instrument use. Lake Shore Cryotronics, Inc. assumes no liability
for customer failure to comply with these requirements.
The 240 Series input module protects the operator and
surrounding area from electric shock or burn, mechanical
hazards, excessive temperature, and spread of fire from the
instrument. Environmental conditions outside of the conditions
below may pose a hazard to the operator and surrounding area.
Indoor use
Altitude to 2000 m
Temperature for safe operation: -20 °C to 50 °C
Maximum relative humidity: 95% non-condensing
Power supply voltage fluctuations not to exceed
±10% of the nominal voltage
Overvoltage category II
Pollution degree 2
IP20: not protected against harmful ingress of water
Ground the instrument
To minimize shock hazard, the instrument is equipped with a
grounded connection to the DIN rail. Connect the DIN rail to an
electrical ground.
Do not operate in an explosive atmosphere
Do not operate the instrument in the presence of flammable gases or
fumes. Operation of any electrical instrument in such an environment
constitutes a definite safety hazard.
Do not substitute parts or modify instrument
Do not install substitute parts or perform any unauthorized
modification to the instrument. Return the instrument to an
authorized Lake Shore Cryotronics, Inc. representative for service and
repair to ensure that safety features are maintained.
Cleaning
Do not submerge instrument. Clean only with a damp cloth,
exterior only.
Installation
When installing the instrument, ensure it is mounted securely on the
DIN rail.
Improper Use
If the instrument is used in a manner that is not specified by Lake
Shore, the safety protections provided by the instrument are no
longer guaranteed, and may be impaired.
For more safety information, refer to the Model 240 user’s manual:
https://www.lakeshore.com/240manual
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