PCB Piezotronics 117B232 User manual

Model 117B232
CONFORMAL BALLISTICS PRESSURE SENSOR
Installation and Operating Manual
For assistance with the operation of this product,
contact PCB Piezotronics, Inc.
Toll-free: 800-828-8840
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: 21086
Revision: NR
OPERATION MANUAL FOR
CONFORMAL BALLISTICS PRESSURE SENSOR
Series 117B
1
1.0 INTRODUCTION
The Model 117B Conformal Sensor measures
pressure inside metallic cartridges and paper or
plastic shotshell, during firing of the round, without
drilled holes in the round.
The sensor is mounted flush with the chamber walls,
matching the curvature exactly. The expanded
cartridge or shotshell transmits forces through the thin
wall to the sensor.
The Model 117B is a conventional charge output
type sensor using synthetic quartz as the piezoelectric
sensing material.
An alignment guide now standard on all 117B
Models, simplifies installation by automatically
controlling rotational alignment of the sensor, leaving
only the depth adjustment consideration.
2.0 DESCRIPTION
Refer to enclosed installation drawing for outline
dimensions and physical description.
The basic sensor is a probe design with captivated
hollow clamp nut. The clamp nut rotates
independently of the probe body and serves to lift the
sensor out of the mounting port as it is unscrewed.
The alignment device consists of a pin and slotted
clamp assembly which fits tightly over the collar of
the sensor.
The hardened steel pin is accurately aligned with the
axis of the diaphragm curvature and when assembled
into a precisely drilled mating hole in the barrel or
calibration chamber, achieves near perfect rotational
alignment of sensor diaphragm.
The slotted clamp arrangement allows for tolerance in
the location of the guide pin hole in an axial direction
on the test barrel or calibration adaptor.
The precise depth adjustment is obtained by the use
of the correct thickness spacer selected from a set of 9
spacers of various thicknesses supplied with each
sensor.
Once the proper thickness spacer is found, removal
and re-installation now becomes a routine matter.
3.0 INSTALLATION
3.1 PORT PREPARATION
Prepare mounting port in accordance with installation
drawing 117-20 (XX)-90 supplied as part of this
manual.
NOTE: The installation port for the 117B is identical
to that for the 117A.
Drill guide pin hole as shown in installation drawing,
paying particular attention to locating C/L of hole
exactly on C/L of barrel.
Do not use a drill that is worn, as this may cause the
hole to be slightly undersized and the guide pin may
bind as it is drawn into the hole.
It is extremely important that the guide pin hole be
drilled parallel to the sensor mounting port to permit
the guide pin to move freely into the hole.
NOTE: Each model variation of the 117B is designed
to fit in a specific location (measured from the bolt
face) on a specific ammunition caliber. Changing
location and/or caliber will cause a mismatch of
diaphragm curvature with cartridge case diameter
since most cartridge cases are tapered.
3.2 INSTALLING THE SENSOR
After mounting holes have been prepared, proceed
with installation as follows:
1. On most models of 117B, it is not important
which side of the sensor is mounted toward
the muzzle.
However, on certain types of ammunition
(such as 20 mm cannon) which have a severe
taper, the diaphragm has a matching taper in

Drawing Number: 21086
Revision: NR
OPERATION MANUAL FOR
CONFORMAL BALLISTICS PRESSURE SENSOR
Series 117B
2
the curvature. In these latter cases, the
sensor forward side is identified with the
legend “FWD”etched on the guide collar to
which the slotted clamp is attached. The
clamp must be removed to find this legend.
If it does not appear, the sensor may be
mounted with either side toward the muzzle.
2. Loosen slotted clamp, but do not remove
clamp.
3. Select the middle thickness (.014) spacer
from the set of nine (065A19) supplied and
place it around sensor barrel.
4. Begin threading the sensor clamp nut into
the threaded mounting port, sliding slotted
clamp fore and aft as needed to allow guide
pin to fully enter hole.
Continue to turn clamp nut into hole by hand
or using 5/16 open end wrench.
Do not tighten when sensor bottoms.
5. Now tighten the screw closing slotted clamp.
6. Using open end wrench, tighten sensor
clamp nut.
NOTE: It is not necessary to put large amounts of
torque on this nut since a pressure seal is not
necessary. Approximately 5 to 10 ft. lbs. is
sufficient.
7. Now inspect flushness of diaphragm with
inside surface of chamber. This can be
accomplished visually in most cases.
If the diaphragm extends too deeply into the
chamber, select a thicker spacer and repeat
mounting procedure.
If the diaphragm is too deeply recessed,
select a thinner spacer and remount.
Once the proper thickness is found for
perfect flushness, the sensor may be
removed and reinstalled using this same
spacer and the proper depth will be achieved
each time.
NOTE: For best accuracy of results, use
same charge amplifier for calibration and for
actual operation. Use long TC for
calibration, medium or short TC for best
drift free operation.
4.0 POLARITY
Polarity of the Model 117B is negative i.e., the
charge output is negative for increasing pressure
input, making it compatible with inverting type
charge amplifiers.
5.0 CALIBRATION
Calibration of the Models 117B is facilitated by a
calibration adaptor which exactly matches the
chamber dimensions of the cartridge under test. An
actual cartridge case is hydraulically pressurized with
reference pressure to obtain a point-by-point sensor
calibration.
These calibration adaptors can be fabricated by the
user or can be purchased from PCB as our Model
090B calibration adaptor. Simply specify caliber and
longitudinal location of sensor.
For most rimfire applications, the sensor is located
.25 inches forward of the boltface.
For center fire cartridges a location .175 inches back
from the cartridge shoulder is preferred. Consult PCB
for recommendations on sensor locations if questions
arise.
Since most cartridge cases are tapered and diameter is
dependent upon longitudinal location, this location
may not be changed after the sensor is fabricated
since it is essential for proper operation that the
sensor curvature exactly match chamber curvature.

Drawing Number: 21086
Revision: NR
OPERATION MANUAL FOR
CONFORMAL BALLISTICS PRESSURE SENSOR
Series 117B
3
5.1 LOW-END NONLINEARITY
It will be noticed during calibration, especially with
metallic cartridges, that a certain amount of pressure
is necessary before linear output is attained from the
conformal sensor.
This is due to the fact that since the cartridge cases
are made nominally smaller in diameter than the
chamber to allow easy insertion and extraction, the
case must be expanded slightly by the internal
pressure before force can be transmitted to the sensor.
See the enclosed guide “An Improved Technique for
Utilization of Conformal Ballistics Sensor Calibration
Data”for methods of dealing with this topic.
6.0 MAINTENANCE
It is essential for normal operation of the Model 117B
that the insulation resistance be maintained above
1012 ohms. If insulation resistance should deteriorate,
wipe connector with clean cloth or paper wipe dipped
in a solvent compatible with Teflonsuch as
isopropyl alcohol, then bake in oven at 250F for ½
hour.

Drawing Number: 21086
Revision: NR
OPERATION MANUAL FOR
CONFORMAL BALLISTICS PRESSURE SENSOR
Series 117B
4

Drawing Number: 21086
Revision: NR
OPERATION MANUAL FOR
CONFORMAL BALLISTICS PRESSURE SENSOR
Series 117B
5