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Pointek CLS 500 – INSTRUCTION MANUAL
7ML19985GG03
mmmm
m
Int
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onnect
ion
Grounding instructions
Connect the housing and the process connection with the tank wall, using the ground lug
on the housing.
Notes:
•
Since the measurement occurs between the Measurement and Ground
connections, it is important to have good, low-resistance, reliable connections in
this circuit.
•
Use a ground connection wire with a sufficiently large diameter relative to its
length, and not less than 1mm
2
.
•
The Pointek CLS500 measurement circuit is completely isolated from the loop
circuitry: this allows either line of the loop circuit to be grounded if requirements
for Ex safety are followed and if the power supply voltage is less than 33 Vdc.
WARNING: When connecting the probe, do not leave moisture or metal scrap
(from the cable shielding, for example) inside the housing. This could interfere
with transmitter operation, or cause a short circuit.
instrument system
ground connection point
instrument system ground
(connected at factory)
label / protective seal
(DO NOT REMOVE)
ground lug