Calex PMB201, Operator'S Manual

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4
INSTALLATION
The installation process consists of the following stages:
•
Preparation
• Mechanical installation
• Electrical installation
Please read the following sections thoroughly before proceeding with the installation.
PREPARATION
Ensure that the sensor is positioned so that it is focused on the target only.
DISTANCE AND SPOT SIZE
The size of the area (spot size) to be measured determines the distance between the sensor
and the target. The spot size must not be larger than the target. The sensor should be
mounted so that the measured spot size is smaller than the target. We normally recommend
that the target should be at least twice the size of the measured spot for maximum accuracy.
AMBIENT TEMPERATURE
The sensor is designed to operate in ambient temperatures from 0°C to 120°C (XCF models:
70°C).
Avoid thermal shock. Allow 20 minutes for the unit to adjust to large changes in ambient
temperature.
ATMOSPHERIC QUALITY
Smoke, fumes or dust can contaminate the lens and cause errors in temperature
measurement.
In these types of environment the air purge collar should be used to help keep the lens clean.
ELECTRICAL INTERFERENCE
Do not operate the sensor near large electromagnetic fields (e.g. around arc
welders, generators and induction heaters). Electromagnetic interference can cause
communication errors.