PCB PIEZOTRONICS INC.
3425 WALDEN AVE.
DEPEW, NEW YORK 14043
3425 Walden Ave
Depew, New York 14043
N
o
70911
N
o
1
of
3
Rev. NR
08/01/19
DIN 49059
INSTRUCTIONS FOR USE
–
EX(M)637XYYYZ and EX(M)638XYYYZ Series
Model(s)
EX(M)637XYYYZ and EX(M)638XYYYZ Series
(M)-Represents an optional Metric Mounting Option
X = is a letter that signifies family type. The letter will be from A to Z.
YYY = is Two or Three numbers from 00 to 999 that signifies changes to filtering, gain, frequency response etc.
Z= is an optional letter A to Z that signifies family type.
Markings
PCB
Depew, NY
IECEx ETL 19.0034X
ITS19ATEX25015
ITS19ATEX45016 X
Ex ia IIC T4 Ga, -196⁰C ≤ Tamb ≤121ºC
Ex nA IIC T4 Gc, -196⁰C ≤ Tamb ≤121ºC
ETL c/us Intertek Listed 5010230
Class I, Div. 1, Groups A,B,C and D
Class I, Div. 2, Groups A,B,C and D
Class II, Div. 1, Groups E,F and G
Class III
Class I, Zone 0, AEx ia IIC T4 Ga,
Class I, Zone 2, AEx nA IIC T4 Gc,
-196⁰C ≤ Tamb ≤121ºC
Install per 70910
Putting Into
Service
Powering: All ICP
®
sensors require constant current excitation for proper operation. For this reason, use only PCB
constant-current signal conditioners or other approved constant-current sources. The power supply consists of a
current-regulated, 2-20 mA at 18 to 28 VDC source. This power is regulated by a current-limiting circuit, which
provides the constant-current excitation required for proper operation of ICP
sensors.
In general, battery-powered devices offer versatility for portable, low-noise measurements, whereas line-powered
units provide the capability for continuous monitoring. Consult the Vibration Division’s product catalog for more
information about signal conditioners.
NOTE: Under no circumstances should a voltage be supplied to an ICP
accelerometer without a current-regulating
diode or equivalent electrical circuit. This may include ohmmeters, multi-meters and continuity testers.
Safe Use
After completing the system setup, switch on the signal conditioner and allow 1 to 2 minutes for the system to
stabilize. The meter (or LED) on the signal conditioner should be reading “green.” This indicates proper operation
and you may begin taking measurements. If a faulty condition is indicated (red or yellow reading), first check all
system connections, then check the functionality of the cable and signal conditioner. If the system still does not
operate properly, consult a PCB factory representative.
NOTE: Always operate the accelerometer within the limitations listed on the enclosed Specification Sheet.
Operating the device outside these parameters can cause temporary or permanent damage to the sensor.
Summary of Contents for IMI SENSORS EX637 Series
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