PCB Piezotronics IMI SENSORS EX637 Series User manual

Model EX638A06
Intrinsically-safe, cryogenic, industrial, quartz shear ICP accel, 25mV/g, 4 to 1.5kHz, side exit, 2-
pin conn.
Installation and Operating Manual
For assistance with the operation of this product,
contact the PCB Piezotronics, Inc.
Toll-free: 800-959-4464
24-hour SensorLine: 716-684-0001
Fax: [phone]
E-mail: [email protected]
Web: www.imi-sensors.com

Manual 21354 Rev E
ECN 50523
Repair and Maintenance
PCB guarantees Total Customer Satisfaction through its
“Lifetime Warranty Plus” on all Platinum Stock Products
sold by PCB and through its limited warranties on all other
PCB Stock, Standard and Special products. Due to the
sophisticated nature of our sensors and associated
instrumentation, field servicing and repair is not
recommended and, if attempted, will void the factory
warranty.
Beyond routine calibration and battery replacements
where applicable, our products require no user
maintenance. Clean electrical connectors, housings, and
mounting surfaces with solutions and techniques that will
not harm the material of construction. Observe caution
when using liquids near devices that are not hermetically
sealed. Such devices should only be wiped with a
dampened cloth—never saturated or submerged.
In the event that equipment becomes damaged or ceases
to operate, our Application Engineers are here to support
your troubleshooting efforts 24 hours a day, 7 days a
week. Call or email with model and serial number as well
as a brief description of the problem.
Calibration
Routine calibration of sensors and associated
instrumentation is necessary to maintain measurement
accuracy. We recommend calibrating on an annual basis,
after exposure to any extreme environmental influence,
or prior to any critical test.
PCB Piezotronics is an ISO-9001 certified company whose
calibration services are accredited by A2LA to ISO/IEC
17025, with full traceability to SI through N.I.S.T. In
addition to our standard calibration services, we also offer
specialized tests, including: sensitivity at elevated or
cryogenic temperatures, phase response, extended high
or low frequency response, extended range, leak testing,
hydrostatic pressure testing, and others. For more
information, contact your local PCB Piezotronics
distributor, sales representative, or factory customer
service representative.
Returning Equipment
If factory repair is required, our representatives will
provide you with a Return Material Authorization (RMA)
number, which we use to reference any information you
have already provided and expedite the repair process.
This number should be clearly marked on the outside of
all returned package(s) and on any packing list(s)
accompanying the shipment.
Contact Information
PCB Piezotronics, Inc.
3425 Walden Ave.
Depew, NY14043 USA
Toll-free: [phone]
24-hour SensorLine: [phone]
General inquiries: in[email protected]
Repair inquiries: [e-mail]
For a complete list of distributors, global offices and sales
representatives, visit our website, www.pcb.com.
Safety Considerations
This product is intended for use by qualified personnel
who recognize shock hazards and are familiar with the
precautions required to avoid injury. While our equipment
is designed with user safety in mind, the protection
provided by the equipment may be impaired if equipment
is used in a manner not specified by this manual.
Discontinue use and contact our 24-Hour Sensorline if:
Assistance is needed to safely operate equipment
Damage is visible or suspected
Equipment fails or malfunctions
For complete equipment ratings, refer to the enclosed
specification sheet for your product.
Definition of Terms and Symbols
The following symbols may be used in this manual:
DANGER
Indicates an immediate hazardous
situation, which, if not avoided, may
result in death or serious injury.

Manual 21354 Rev E
ECN 50523
CAUTION
Refers to hazards that could damage
the instrument.
NOTE
Indicates tips, recommendations and
important information. The notes
simplify processes and contain
additional information on particular
operating steps.
The following symbols may be found on the equipment
described in this manual:
This symbol on the unit indicates that
high voltage may be present. Use
standard safety precautions to avoid
personal contact with this voltage.
This symbol on the unit indicates that
the user should refer to the operating
instructions located in the manual.
This symbol indicates safety, earth
ground.

Manual 21354 Rev E
ECN 50523
PCB工业监视和测量设备 - 中国RoHS2公布表
PCB Industrial Monitoring and Measuring Equipment - China RoHS 2 Disclosure Table
部件名称
有害物质
铅(Pb)
汞
(Hg)
镉
(Cd)
六价铬(Cr(VI))
多溴联苯 (PBB)
多溴二苯醚(PBDE)
住房
O
O
O
O
O
O
PCB板
X
O
O
O
O
O
电气连接器
O
O
O
O
O
O
压电晶体
X
O
O
O
O
O
环氧
O
O
O
O
O
O
铁氟龙
O
O
O
O
O
O
电子
O
O
O
O
O
O
厚膜基板
O
O
X
O
O
O
电线
O
O
O
O
O
O
电缆
X
O
O
O
O
O
塑料
O
O
O
O
O
O
焊接
X
O
O
O
O
O
铜合金/黄铜
X
O
O
O
O
O
本表格依据 SJ/T 11364 的规定编制。
O：表示该有害物质在该部件所有均质材料中的含量均在 GB/T 26572 规定的限量要求以下。
X：表示该有害物质至少在该部件的某一均质材料中的含量超出 GB/T 26572 规定的限量要求。
铅是欧洲RoHS指令2011/65/ EU附件三和附件四目前由于允许的豁免。
CHINA RoHS COMPLIANCE

Manual 21354 Rev E
ECN 50523
Component Name
Hazardous Substances
Lead (Pb)
Mercury (Hg)
Cadmium (Cd)
Chromium VI
Compounds
(Cr(VI))
Polybrominated
Biphenyls (PBB)
Polybrominated
Diphenyl Ethers
(PBDE)
Housing
O
O
O
O
O
O
PCB Board
X
O
O
O
O
O
Electrical Connectors
O
O
O
O
O
O
Piezoelectric Crystals
X
O
O
O
O
O
Epoxy
O
O
O
O
O
O
Teflon
O
O
O
O
O
O
Electronics
O
O
O
O
O
O
Thick Film Substrate
O
O
X
O
O
O
Wires
O
O
O
O
O
O
Cables
X
O
O
O
O
O
Plastic
O
O
O
O
O
O
Solder
X
O
O
O
O
O
Copper Alloy/Brass
X
O
O
O
O
O
This table is prepared in accordance with the provisions of SJ/T 11364.
O: Indicates that said hazardous substance contained in all of the homogeneous materials for this part is below the limit
requirement of GB/T 26572.
X: Indicates that said hazardous substance contained in at least one of the homogeneous materials for this part is above the limit
requirement of GB/T 26572.
Lead is present due to allowed exemption in Annex III or Annex IV of the European RoHS Directive 2011/65/EU.

PCB PIEZOTRONICS INC.
3425 WALDEN AVE.
DEPEW, NEW YORK 14043
3425 Walden Ave
Depew, New York 14043
No70911 No1of 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.

PCB PIEZOTRONICS INC.
3425 WALDEN AVE.
DEPEW, NEW YORK 14043
3425 Walden Ave
Depew, New York 14043
No70911 No2of 3
Rev. NR
08/01/19
DIN 49059
Assembling
The EX(M)637XYYYZ and EX(M)638XYYYZ Series have hermetically sealed stainless Steel housings, with a
glass-sealed connector, and do not require any assembly. Only mounting to the machine being monitored using
standard mounting accessories.
Dismantling
Other than removal from the mounting, there is no disassembly of the sensor required to take it out of service.
Maintenance
Routine maintenance, such as the cleaning of electrical connectors, housings, and mounting surfaces with solutions
and techniques that will not harm the physical material of construction, is acceptable.
Servicing
Due to the sophisticated nature of the sensors and associated instrumentation provided by PCB Piezotronics, user
servicing or repair is not recommended and, if attempted, may void the factory warranty. However, routine
calibration of sensors and associated instrumentation is recommended as this helps build confidence in
measurement accuracy and acquired data over time.
Repair
In the event that equipment becomes damaged or ceases to operate, arrangements should be made to return the
equipment to PCB Piezotronics for repair. User servicing or repair is not recommended and, if attempted, may void
the factory warranty.
Installation
Overview: Sensor must be mounted in order to be put into service. When choosing a mounting method, consider
closely both the advantages and disadvantages of each technique. Characteristics like location, ruggedness, amplitude
range, accessibility, temperature, and portability are extremely critical. However, the most important and often
overlooked consideration is the effect the mounting technique has on the high-frequency performance of the
accelerometer. Mounting methods include: Stud mount, adhesive mount, magnetic mount, or probe tip mount.
Cabling: Care and attention to cable installation and cable condition is essential as the reliability and accuracy of any
measurement system is no better than that of its weakest link. Due to the nature of vibration measurements, all sensor
cables will ultimately fatigue and fail. Good installation practice will extend the life of a cable, however, it is highly
recommended to keep spare cables on hand to enable continuation of the test in the event of a cable failure.
Adjustment
The sensor is a sealed device and no user adjustments are possible. However, routine calibration of sensors by the
manufacturer is recommended as this helps build confidence in measurement accuracy and acquired data.
Danger Areas (for
pressure-relief
devices)
N/A –not a pressure relief device.
Training
Instructions
Industrial sensors to be installed in Hazardous Locations must have this done by trained professionals according to
EN/IEC 60079-14 requirements.
Details on Safety
of Protection
Category
Ex ia is “intrinsic safety”, which limits the energy of sparks and surface temperatures to safe levels.
Ex nA is “Non-Sparking”, which ensures that there is no risk of arcing and sparking or hot surfaces during normal
operation with a minimum IP protection of IP54.
Entity Parameters
and Limits
(Values)
Temperature Range: -196⁰C to +121⁰C
Vmax = 28V, Imax = 93mA, Pi = 0.65W, Ci = 6.5nF, Li = 0µH
Special Conditions
of Use
Version Ex nA:
The apparatus must be only connect to an equipment whose electrical parameters are compatible with the electrical
parameters. The apparatus shall be connected according to drawing 70910 (page 2/2). The connected cable and the
connector must provide a minimum ingress protection of IP54, when assessed according to IEC 60079-0 and IEC
60079-15. Unused connector must be fitted with an appropriately rated blanking cover.
Device complies with the requirements of the dielectric test per clause 6.3.13 of standard IEC 60079-11.
Essential
Characteristics of
tools fitted to the
system (if any).
N/A –No tools are fitted to the system.
Drawings and
Diagrams
70893,70898,70901
Other
ITS 19 ATEX 25015, ITS 19 ATEX 45016 X and ITS IECEx 19.0034X
For ATEX protection “ia” –EN 60079-0 + A11:2013 and EN 60079-11:2012
For ATEX protection “nA” – EN 60079-0 + A11:2013 and EN 60079-15:2010

PCB PIEZOTRONICS INC.
3425 WALDEN AVE.
DEPEW, NEW YORK 14043
3425 Walden Ave
Depew, New York 14043
No70911 No3of 3
Rev. NR
08/01/19
DIN 49059
For IECEx protection “ia” –IEC 60079-0 Ed. 6 and IEC 60079-11 Ed. 6
For IECEx protection “nA” – IEC 60079-0 Ed. 6 and IEC 60079-15 Ed. 4
ETL c/us Intertek Listed –5010230
Note: Literature (such as the manual or marketing materials) describing the equipment or protective system must not contradict
the instructions with regard to safety aspects.
Note: IMI Sensors is a Division of PCB Piezotronics. This Division is wholly contained in the PCB Piezotronics manufacturing
facility at 3425 Walden Avenue, Depew, New York. Same address, same manufacturing facility. Some of the documentation
contained in the Technical File associated with this application is labeled IMI Sensors, A PCB Piezotronics Div. and some is
labeled simply PCB Piezotronics. PCB Piezotronics labeled drawing are higher-level drawings, which are used across multiple
divisions, while IMI labeled drawing are specific to IMI models. There will be a mixture of IMI and PCB drawing to support this
application, and in reality, they are the same entity however with an associated trade name (IMI) that is recognized by our
customer base.

MANUAL NUMBER: 18405
MANUAL REVISION: A
ECN NUMBER: 49766
Operating Guide with Enclosed Warranty Information
3424 Walden Avenue, Depew, New York 14043-2495
Phone [phone]
Fax [phone]
Toll Free Line 1-800-959-4IMI
Piezoelectric ICP® Accelerometers Operating Guide

General
OPERATING GUIDE
for use with
PIEZOELECTRIC ICP® ACCELEROMETERS
SPECIFICATION SHEET, INSTALLATION DRAWING AND CALIBRATION INFORMATION ENCLOSED
IMI ASSUMES NO RESPONSIBILITY FOR DAMAGE CAUSED TO THIS PRODUCT AS A RESULT OF
PROCEDURES THAT ARE INCONSISTENT WITH THIS OPERATING GUIDE
1.0 INTRODUCTION
Congratulations on the purchase of a quality ICP®
industrial sensor. In order to ensure the highest level of
performance for this product, it is imperative that you
properly familiarize yourself with the correct mounting
and installation techniques before attempting to
operate this device. If, after reading this manual, you
have any additional questions concerning this sensor or
its application, feel free to call an Application Engineer
at 716-684-0003 or 800-959-4464.
Proper sensor selection requires special attention to
three main areas: sensor design, dynamic
expectations, and application environment.
Sensor design encompasses the actual sensing
element, the physical material, and component
selection for the sensor. Preferred industrial
accelerometers employ a shear sensing element
with either a quartz or ceramic crystal.
Quartz sensing elements are typically used when
long-term stability and minimum output shifts due
to temperature changes are desired. Ceramic
sensing elements provide excellent resolution and
durability in noisy environments, and can be
designed to supply low-frequency and high-
frequency measurements. Shear-design sensors are
preferred because of their inherent insensitivity to
adverse environmental influences, such as case or
base strain and thermal transients. Internal case
isolation and shielding is important in avoiding
erroneous signals resulting from ground loops
and pick-up of electromagnetic and radio
frequency interference. Other critical material
selection criteria include non-magnetic stainless
steel housing, hermetic sealing, and industrial
military connectors. See Figure 1.
Dynamic expectations are application-specific and
referto the frequency range of measurement and the
anticipated amplitudes of vibration. After careful
review of the machinery to be monitored, minimum
and maximum measurement frequency ranges may
be established. The minimum measurement
frequency is normally related to any sub-harmonics of
running speed or any lower frequencies where
vibration data is to be collected. The maximum
measurement frequency of interest is determined by
the maximum number of harmonics of an event like
running speed, bearing frequencies, or gear mesh.
This measurement frequency range should be well
within the specified frequency range ofthe sensor.
Amplitude range refers to the anticipated levels of
vibration to be measured. These values are related
to the alarm levels set for the machine. By carefully
evaluating the idiosyncrasies of the machinery, the
predictive maintenance engineer can estimate the
minimum expected vibration levels and ensure that
the electrical noise floor of the accelerometer is less
than those levels.