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2.6 RFI (EMI)/EMC protection
The sensing head and signal cable should be protected against electrical noise sources. Avoid
running connection cables close to interfering sources such as high power cables, inverters,
radio transmission lines, computer communication lines or cables carrying pulses of high
current.
Use the following installation method:
Use the ground connection of the gas detection system as start point grounded to
earth.
Mount the ST450EC on a non-conductive structure or base.
Use an isolator when mounting on a conductive surface (like a steel I-profile,
aluminium panel or swallow plate) to avoid connection to local electrical ground.
Connect the shield of the connection cable to the cable gland of the sensing head.
Ensure proper connection by clamping the shield in the centre of the conical bushing
of the cable gland. The other side of the screened cable should be connected with the
system ground of the gas detection control system as described in chapter 2.2 - Cable
requirements and cable installation.
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