PCB Piezotronics 137B25 User manual

Model 137B25
ICP® Pressure Sensor
Installation and Operating Manual
For assistance with the operation of this product,
contact the PCB Piezotronics, Inc.
Toll-free: 716-684-0001
24-hour SensorLine: 716-684-0001
Fax: [phone]
E-mail: [email protected]
Web: www.pcb.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.

Drawing Number: 40955
Revision: NR
ECO#: 39372
OPERATION MANUAL FOR
FREE FIELD BLAST PRESSURE PROBE
Models 137B21X, B22X, B23X, B24X
1
1.0 INTRODUCTION
The Series 137B2XX Free Field Blast ICP
®
Pressure
Probe is designed for measuring free field blast and
shock tunnel pressure time profiles.
Designed with an ICP
®
built-in source follower
amplifier, the 137B2XX Series offers sensitivities of
1, 20, 10 and 100 mV/psi with full-scale ranges from
0 to 50, 250, 500 or 5000 psi. The 137B2XX Series
is constructed with a stable quartz piezoelectric
element in an Invar housing
2.0 INSTALLATION
In field blast measurements, mount the Series
137B2XX pressure probe in an axial direction to the
blast source. The probes should be elevated high
enough off of the ground such that ground does not
interfere with the measured pressure. See photo 1.
Photo 1
The sensing surface should be aligned in a vertical
plane with respect to the ground as shown in photo 2.
Avoiding direct exposure of the diaphragm to
sunlight is good practice so that changing
temperatures throughout a test day do not change the
sensitivity of the sensor. In any case care must be
taken such that the sensor’s diaphragm is not oriented
down to avoid ground reflections.
In some cases, where flash temperatures such as those
generated by blasts and shock fronts are present, it
may be necessary to thermally insulate the diaphragm
to minimize signals generated by these effects.
Photo 2
Common black vinyl electrical tape has been found to
be an effective thermal insulating material in many
cases. One layer may be used across the end of
diaphragm and adaptor. See photo 3.
Photo 3
A silicone rubber coating approximately 0.010 inch
(0.25 mm) thick has also been proven effective in
many applications. General Electric RTV type 106 is
recommended (PCB Model 065A67). Apply the
rubber coating to the surface of the diaphragm and
allow it to cure in accordance with the manufacturer’s
instructions.
3.0 OPERATION
Using suitable cable, connect the sensor to one of
PCB's Series 480, 481, 482, 483, or 484 signal
conditioners or equivalent power supply. If using a
PCB line power unit, the equipment will supply the
137B2XX with an adjustable 2 to 20 mA constant
current at +22 to +30 VDC through a current-
regulating circuit. If using a battery-operated unit,
the constant current is 2 mA. See Guide G-0001 for
powering and signal utilization information pertinent
to all ICP
®
instrumentation.

Drawing Number: 40955
Revision: NR
ECO#: 39372
OPERATION MANUAL FOR
FREE FIELD BLAST PRESSURE PROBE
Models 137B21X, B22X, B23X, B24X
2
Switch power on and observe reading of bias
monitoring voltmeter on front panel of signal
conditioner.
If indicator is in green section of indicator panel, the
IC amplifier is producing proper bias (8 to 14 VDC),
the cable connections are normal, and the system is
ready to operate.
If the pointer moves into the red area of the fault
monitor meter, output is zero and a short is indicated.
The short could be located in amplifier cable
connectors or power unit.
If the pointer moves into the yellow area of the fault
monitor meter, an open circuit is indicated with full
power supply voltage.
An open circuit could be the result of a faulty
amplifier, an open cable or open connectors. Check
to be sure connectors are properly mated. Some PCB
power units feature fault LEDs in place of a fault
meter. Instead of a pointer, the fault LED will light
when an open or short circuit condition is present.
Allow the sensor to thermally stabilize for about one
minute. A signal drift may occur when the cable is
connected to the readout instrument. This drift
occurs during charging of the coupling capacitor in
the power unit. The signal will stabilize in several
minutes. Proceed with measurements.
Most line-powered signal conditioners manufactured
by PCB have an adjustable current feature allowing a
choice of input currents from 2 to 20 mA. In general,
for the lowest noise (best resolution), choose the
lower current ranges.
In order to maintain a high frequency response of the
system when driving long cables (to hundreds or
thousands of feet), use a higher current, up to 20 mA
maximum. Use of low-capacitance cable (i.e. RG
62/U) and impedance-matching variable resistors are
suggested to improve long cable performance
characteristics. See Guide G-0001 for a discussion
on cable considerations.
3.1 POLARITY
The 137B2XX Series produces a positive-going
output voltage for increasing pressure output.
4.0 LOW-FREQUENCY RESPONSE
Consult Section 7.0 in General Guide G-0001 for
detailed explanation of low-frequency characteristics
of ICP
®
instrumentation.
5.0 CALIBRATION
Do not try to calibrate the Series 137B2XX statically.
The Series 137B2XX is calibrated dynamically by
PCB using a hydraulic pulse technique.
For best accuracy, use the calibration certificate
supplied. Factory recalibration is available for a
nominal charge.
6.0 MAINTENANCE
Although ICP
®
sensors have low-output impedance
and are not usually affected by moisture, in extremely
damp environments it may be well to protect cable
connections with shrink tubing.
It is well to observe the following precautions in
using the sensor:
1. Do not exceed specified maximum range.
2. Do not subject sensor to temperatures
exceeding temperature shown on specification sheet.
3. Do not apply voltage to sensor without
current-limiting diodes or other current protection.
4. Do not apply more than 20 mA of current to
the sensor.
Field repair of the piezoelectric element or amplifier
of the Series 137B2XX is not practicable. Thus,
should a sensor in this series require servicing, refer
to the warranty sheet.
CAUTIONARY NOTE: If sensors are left outside
overnight, they should be coated with silicone oil and
covered. The protective silicone oil or grease coating
should also be applied when the sensors are operated
in a humid or rainy environment.
®ICP is a registered trademark of PCB Piezotronics

Model Number
137B25 ICP® PRESSURE SENSOR Revision: D
ECN #: 51260
Performance ENGLISH SI
Measurement Range(for ±5V output) 50 psi 345 kPa
Useful Overrange(for ± 10V output) 100 psi 690 kPa [1]
Sensitivity(± 15 %) 100 mV/psi 14.5 mV/kPa [2]
Maximum Pressure 1 kpsi 6,895 kPa
Resolution 10 mpsi 0.069 kPa [3]
Resonant Frequency ≥ 400 kHz ≥ 400 kHz
Rise Time(Incident) ≤ 6.5 µ sec ≤ 6.5 µ sec
Non-Linearity ≤ 1.0 % FS ≤ 1.0 % FS [4]
Environmental
Temperature Range(Operating) -100 to +275 °F -73 to +135 °C
Temperature Coefficient of Sensitivity ≤ 0.05 %/°F ≤ 0.090 %/°C
Electrical
Discharge Time Constant(at room temp) ≥ 0.3 sec ≥ 0.3 sec
Excitation Voltage 22 to 30 VDC 22 to 30 VDC
Constant Current Excitation 2 to 20 mA 2 to 20 mA
Output Impedance ≤ 100 Ohm ≤ 100 Ohm
Output Bias Voltage 8 to 15 VDC 8 to 15 VDC
Physical
Sensing Geometry Compression Compression
Sensing Element Quartz Quartz
Housing Material Aluminum Aluminum
Diaphragm Invar Invar
Sealing Epoxy Epoxy
Electrical Connector 4-Pin 4-Pin [2]
Weight 16.1 oz 456 gm [3]
[5]
All specifications are at room temperature unless otherwise specified.
In the interest of constant product improvement, we reserve the right to change specifications without notice.
ICP® is a registered trademark of PCB Piezotronics, Inc.
OPTIONAL VERSION S
Optional versions have identical specifications and accessories as listed for the standard model except
where noted below. More than one option may be used.
NOTES:
[1]For +10 volt output, minimum 26 VDC supply voltage required. Negative 10 volt output may be
limited by output bias.
[2]Two identically spec'd elements spaced 10cm apart - see drawing #65310 for details. Individual
calibration certs supplied for each channel.
[3]Typical.
[4]Zero-based, least-squares, straight line method.
[5]See PCB Declaration of Conformance PS023 for details.
Date: 11/13/2020 Date: 11/13/2020 Date: 11/13/2020 Date: 11/13/2020 65309
Entered: LK Engineer: RPF Sales: RWM Approved: RPF Spec Number:
3425 Walden Avenue, Depew, NY 14043
Phone: [phone]
Fax: [phone]
E-Mail: i[email protected]
SUPPLIED A CCESSORIES:
Model PCS-6 Calibration of Series 134, 137 (2-sensor probes only), and 138 (2)
OPTIONAL ACCESSORIES:
Model 010AYXXXQM 4-socket plug to double splice BNC plugs

PINOUT
SCALE 4X
1
1
2
2
A A
B B
CODE
IDENT. NO.
52681
DWG. NO.
SCALE: SHEET
DRAWN CHECKED ENGINEER
TITLE
UNLESS OTHERWISE SPECIFIED TOLERANCES ARE:
DIMENSIONS IN MILLIMETERS
[ IN BRACKETS ]
ANGLES 2 DEGREES
3425 WALDEN AVE. DEPEW, NY 14043
[phone] E-MAIL: [e-mail]
DIMENSIONS IN INCHES
ANGLES 2 DEGREES
FILLETS AND RADII
.003 - .005
FILLETS AND RADII
0.07 - 0.13
OUTLINE DRAWING
65310
1 OF 1
.75X
MODEL 137BXX
2- SENSOR FREE FIELD BLAST PROBE
DECIMALS XX ±.03
XXX ±.010
DECIMALS X ± 0.8
XX ± 0.25
JDM 6/6/17 JDM 6/6/17 DRK 6/6/17
65310
PCB Piezotronics Inc. claims proprietary rights in
the information disclosed hereon. Neither it nor any
reproduction thereof will be disclosed to others
without the written consent of PCB Piezotronics Inc.
REVISIONS
REV DESCRIPTION DIN
AUPDATED TITLE 46873
FRONT SENSING ELEMENT
.76 [19.3]
3.9 [100]
6.2 [159]
20.0 [508]
REAR SENSING ELEMENT
.87 [22.1]
4-PIN JACK
FRONT (SIGNAL/POWER)
REAR (SIGNAL/POWER) REAR (COMMON)
FRONT (COMMON)