Regulations and operating conditions
■ Installation must comply with current edition of EN 60079-14 for systems
installed in explosive atmospheres and eventually with any local or national
additional requirements that may apply in the country of installation.
■ In general, the ambient temperature, the power supply voltage and power
mentioned in this document pertain to safety precautions against explosion.
These temperatures are not the detector's operating temperatures.
■ OLC20d and OLCT20d are authorized for use in zones 1, 2, 21 and 22 for
ambient temperatures ranging between -20°C to +70°C (except OLC20d HT.
See Chapter 10).
■ OLCT20i are authorized for use in zones 0, 1, 2, 20, 21 and 22 for ambient
temperatures ranging between -20°C to +70°C.
■ The detection sensor must always be in contact with the ambient air.
Therefore:
- Do not cover the detection module.
- Do not apply paint on the detection module.
- Keep dust from building up.
Equipment required
■ Complete detector.
■ Connection cable.
■ Tools for mounting the device.
■ Mounting materials.
Positioning the detector
The detector should be positioned at ground level, on the ceiling, at the height
of the respiratory tract or near air extraction ducts, depending on the application
or the density of the gas to be detected. Heavy gases should be detected at
ground level, while light gases should be detected at ceiling height.
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