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Installation & User Manual
Ed 19UK June 2013
Page 18 of 28
If the amplifier box is installed in an area with over pressure or negative pressure in relation to
the atmospheric pressure in the tank, the breather tube must be directed to an area with
atmospheric pressure equalling the pressure inside the tank. This applies to gauge transmitters
only. For absolute transmitters this has no affect, due to the reference to absolute vacuum and not
atmospheric pressure. This is also the reason why no breather tube is necessary.
Be sure that the cable glands are tight. Use a torque of 6 Nm.
4-20 mA signal cable
1/8” NPT fitting
for breather tube
Shield bracket
Do not fasten to tight
Breather tube
Terminal block for Pt100
element
Breather hose
Transducer cable