Intrinsically Safe Option - PCB Piezotronics IMI SENSORS 640A10 Installation And Operating Manual

RV Option
continued . . .
For integral cable sensors:
RED 4-20 mA
BLACK 4-20 mA
GREEN
WHITE
Note: The acceleration signal Negative has to be isolated from any grounding. If this is grounded, the 4-20 mA
loop will short, causing no output. The acceleration output signal is ideally suited for use with portable battery
powered data collectors or analyzers.

Intrinsically Safe Option

The sensors are approved for use in hazardous environments when used with the proper intrinsically safe barrier
(MTL model 7106/PCB model 691A70). Please follow the wiring diagram found on the outline drawing for PCB
model 691A70. The sensors are approved for the following hazardous environments:
CSA - Canadian Standards Association Intrinsically Safe Certification
Division l; Class l, Group A, B, C & D – Temperature Code T4.
Max Ta = 80
Factory Mutual Certification – Intrinsically Safe Certification
FM -
Division l; Classes l, ll, lll; Groups A through G.
Max Ta = 80
CENELEC - Intrinsically Safe Certification
EEx ia llCT4
Max Ta =
INDUSTRIAL MONITORING INSTRUMENTATION DIVISION
Positive
Negative (same as green)
Acceleration Negative (same as black)
Acceleration Positive

C

C
80 C
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