PCB Piezotronics 090B273 User manual

Model 090B273
Conformal Calibration Adaptor
Installation and Operating Manual
This manual contains the 117B223 installation and operating manuals that comprise a Model
090B273 Conformal Calibration Adaptor kit.
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: 21105
Revision: NR
OPERATION MANUAL FOR
BALLISTICS PRESSURE SENSOR CALIBRATION ADAPTOR
FOR AMMUNITION TESTING
Model 090B
1
1.0 INTRODUCTION
The Series 090B Calibration Adaptors are designed
to facilitate calibration of the Model 117B Conformal
Pressure.
An actual empty cartridge case is pressurized with
precisely known hydraulic pressure and the
corresponding output of the sensor is read at each
pressure point to full scale.
2.0 DESCRIPTION
Refer to Drawing No. 090-2 -90 included as part of
this manual.
The Model 090B Adaptor Assembly consists of a
pressure chamber (Item 1) a pressure chamber
adaptor (Item 2), a cartridge case retainer (Item 3),
and a retaining nut (Item 4).
The pressure chamber adaptor (Item 2) contains an
O-ring to affect a pressure seal when the adaptor is
pushed into the cartridge case mouth. The opposite
end of this item is designed to mount directly into a
standard mounting port for the PCB Models 118A,
108A, 119A and 109A pressure sensors. This feature
precludes the need for high pressure fitting, tubing,
etc. thereby, keeping the total pressurized volume to a
minimum.
3.0 INSTALLING THE SENSOR
The sensor is installed in the empty pressure chamber
(Item 1) so that the flushness of the curved diaphragm
with the I.D. of the test chamber can be observed.
Before installing the sensor into the Model 090B
Adaptor, read the installation instructions supplied
with the specific sensor for which this adaptor is
designed.
Follow these instructions carefully paying particular
attention to the depth adjustment. The rotational
alignment is automatically controlled by the
alignment device incorporated in all 117B Conformal
Sensors.
4.0 INSTALLATION OF THE
CARTRIDGE CASE
(Refer to Installation Dwg. No. 090-2 -90)
It is important that cartridge case selected for
calibration be identical in all respects including
material, to the lot of ammunition undergoing test. It
is advisable that the test unit be selected from the
same lot as the ammunition under test for greatest
accuracy of test results.
For small arms cartridge cases, it is necessary to use a
case with the primer in place, but fired.
Note: Do not use a cartridge case with an unfired
primer or a case which has drilled holes.
If a sample cartridge is a loaded round, remove bullet
and powder, then fire the primer.
On certain calibers an O-ring is provided in the
cartridge case retainer (Item 3) to effect a pressure
seal at the boltface end of the case.
Inspect the boltface surface for irregularities or
imperfections in the area of this O-ring, which could
preclude a pressure seal.
Note: For shotshell installation, consult enclosed
drawing for necessary modification to the empty
shotshell case. The case must be cut to a specified
overall length to fit properly into the calibration
fixture due to inconsistencies in the designs of the
various makes of ammunition.
4.1 STEP-BY-STEP INSTALLATION
PROCEDURE
1. Remove Items 2, 3, and 4 from chamber body
(Item 1).
Note: For metallic cartridges, it is extremely
important that the mouth of the cartridge case be
chamfered to allow easy entry of the O-ring on
the pressure chamber adaptor. This operation is
easily performed with a hand held 90°
countersink or a sharp de-burring tool. If this is
not done, O-ring life will be drastically
shortened.

Drawing Number: 21105
Revision: NR
OPERATION MANUAL FOR
BALLISTICS PRESSURE SENSOR CALIBRATION ADAPTOR
FOR AMMUNITION TESTING
Model 090B
2
Insert the empty cartridge case into the chamber
body (Item 1) as shown. Inspect the cartridge
case retainer (Item 3) for an O-ring groove,
which will be found on certain calibrators. If an
O-ring groove is found, an O-ring must be used
with this item. Lubricate O-ring with silicone
grease or equivalent and install on to the
cartridge case retainer (Item 3).
Install the cartridge case retainer (Item 3) and
tighten until its shoulder bottoms snugly against
the chamber body.
2. Slide the retaining nut (Item 4) over chamber
adaptor (Item 2), with the threaded portion first,
facing the o-ring groove. See drawing 090-2 -
90. Install this chamber adaptor/retaining nut
assembly into the test port of a high pressure
hydraulic source (dead weight tester or pressure
pump with reference pressure gage) using
065A06 seal ring. Using the hex flats on the
chamber adaptor, tighten the chamber
adaptor/retaining nut assembly to approx. 20 ft.
lbs. of torque.
Note: Do not over torque as chamber or seal
could be damaged.
3. Lubricate the O-ring on the chamber adaptor
(Item 2) with silicone grease or hydraulic oil.
Insert the open end of the chamber body (Item 1)
onto the chamber adaptor (Item 2). Insert fully
until end of chamber body meets large diameter
seat on the chamber adaptor.
Thread the retaining nut (Item 4) over the
chamber adaptor, snugly. It will not be necessary
to use large amounts of torque on this nut to
affect a pressure seal.
4. Connect 117B to an electrostatic charge amplifier
(such as PCB Model 462A or 462B52) on "long
time constant".
Zero the system electrically by moving front
panel toggle to "gnd" position momentarily.
5.0 COLLECTING THE DATA
It is important to proceed carefully while performing
the calibration to avoid procedures which could lend
inherent error to the results.
The recommended procedure is as follows:
1. Allow at least 15 minutes for test equipment to
warm-up and stabilize after connecting sensor to
charge amplifier and charge amplifier to digital
volt meter.
2. Since the end result of the sensor calibration is a
determination of sensor slope (in units of
picocoulombs/psi) it will be convenient to range
the charge amplifier so that the output charge
can be read directly in picocoulombs.
To facilitate this, choose the 1000 units/volt
range for the miniature versions of the Model
117B (for pressure to 40,000 psi) and 10,000
units/volt for the standard versions (for pressure
to 80,000 psi).
Set the dial gain pot to 10.00 and verify, by
calibration that the transfer function of the
Charge Amplifier is precisely 1000 pC/volt
and/or 10,000 pC/volt.
3. Set the charge amplifier time constant switch to
"long", switch to "gnd" position and zero the
charge amplifier. Switch to operate and observe
the zero for 15 seconds. No drift should be
observed.
If excessive drift is observed, check for faulty
cable or contamination on connector of sensor.
4. Apply pressure, increasing to 10,000 psi. Set
pressure precisely, using reference gage and
allow pressure to remain at this level for
approximately 5 seconds. Readjust pressure if
necessary and record voltage reading.

Drawing Number: 21105
Revision: NR
OPERATION MANUAL FOR
BALLISTICS PRESSURE SENSOR CALIBRATION ADAPTOR
FOR AMMUNITION TESTING
Model 090B
3
5. Without dropping pressure, immediately
proceed to next pressure level, set pressure and
record reading.
NOTE: For sensors with full scale range of
40,000 psi or less, calibration increments of
5,000 psi are used. For sensors with full scale
range above 40,000 psi, increments of 10,000
psi are used.
Proceed in this manner to full scale.
6. It is important to note that the test pressure must
always be approached from below, i.e. by
increasing pressure, never decreasing.
Use only unfired cases since the hardness of
fired cases may have been altered.
Do not cycle case before calibrating. Take one
set of readings on each case, then discard the
case.
If the test pressure at any point is exceeded by
more than 5%, discard the case and the data and
start over with another case.
8. Repeat procedure for each case to be
calibrated.
6.0 ORGANIZING THE DATA
Since the family of values of output charge at each
calibration point follows a random distribution about
a mean value, the standard deviation at each point is a
valid indication as to the preciseness of the
calibration at that point.
A convenient format for tabulating this data and
calculating the standard deviation is shown in figures
1 and 2.
7.0 UTILIZING THE DATA
See "An Improved Technique for Utilization of
Conformal Ballistics Sensor Calibration Data",
attached.
8.0 OPERATION
Apply pressure slowly, starting with the lowest
pressure working toward the highest, set the pressure
to specific values precisely and read corresponding
voltage output at each point. Do not dump pressure
at each point.
Due to the fact that a certain amount of pressure is
necessary to expand the cartridge case, a severe non-
linearity will be noticed at the low end of the
calibration curve.
A special technique has been developed to handle this
problem. Refer to the enclosed paper "An Improved
Technique for Utilization of Conformal Sensor
Calibration Data" for instructions in collecting and
using the conformal calibration data.
Also, read the operating guide supplied with the
sensor for further pertinent information regarding use
of the 090B Calibrator.
9.0 PRESSURE LIMITS
It is very important that maximum pressures are not
exceeded for the safety of operating personnel.
For pistol calibrators, and 22 rimfire, the maximum
pressure is 40,000 psi. For center fire rifle cartridges,
the maximum hydraulic pressure is 60,000 psi.
Do not exceed these pressures. The units were tested
at the factory only to the pressures stated here.
Exceeding these pressures may endanger personnel
operating this equipment.

Drawing Number: 21105
Revision: NR
OPERATION MANUAL FOR
BALLISTICS PRESSURE SENSOR CALIBRATION ADAPTOR
FOR AMMUNITION TESTING
Model 090B
4
Figure 1

Drawing Number: 21105
Revision: NR
OPERATION MANUAL FOR
BALLISTICS PRESSURE SENSOR CALIBRATION ADAPTOR
FOR AMMUNITION TESTING
Model 090B
5
Figure 2

Model 117B223
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