2-3
Figure 2-1 Mounting an QmBS sensor
2.6 Grounding the Sensor
The sensor’s mounting plate must be grounded to earth.
If national standards are not in effect, follow these grounding guidelines:
Use copper wire, 14 AWG (2.5 mm
2
) or larger wire size, for grounding.
Keep all ground leads as short as possible, less than 1
Ω
Ohm impedence.
Connect ground leads directly to earth, or follow plant standards.
Improper grounding could cause measurement error.
To reduce the risk of measurement error:
•
Ground the Flowsensor to earth, or follow ground
network requirements for the facility.
•
For hazardous area installations in Europe, refer to
standard EN 60079-14 if national standards do not
apply.
CAUTION
Instruction and Operation Manual
X-CM-QmBS-eng
Part Number: 541B052AHG
June, 2008
Section 2 Installing the Sensor
QmBS Sensor / QTA Transmitters
