PCB Piezotronics 137BPBO PLACEBO Manual de usuario

Model 137BPBO

PLACEBO (137B)

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: 716-684-0987

E-mail: [email protected]

Web: www.pcb.com

The information contained in this document supersedes all similar information that

may be found elsewhere in this manual.

Total Customer Satisfaction –PCB

Piezotronics guarantees Total Customer

Satisfaction. If, at any time, for any

reason, you are not completely satisfied

with any PCB product, PCB will repair,

replace, or exchange it at no charge.

You may also choose to have your

purchase price refunded in lieu of the

repair, replacement, or exchange of the

product.

Service –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. 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. Caution should be observed

to insure that liquids are not permitted to

migrate into devices that are not

hermetically sealed. Such devices

should only be wiped with a dampened

cloth and never submerged or have

liquids poured upon them.

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.

Calibration –Routine calibration of

sensors and associated instrumentation

is recommended as this helps build

confidence in measurement accuracy

and acquired data. Equipment

calibration cycles are typically

established by the users own quality

regimen. When in doubt about a

calibration cycle, a good “rule of thumb”

is to recalibrate on an annual basis. It is

also good practice to recalibrate after

exposure to any severe temperature

extreme, shock, load, or other

environmental influence, or prior to any

critical test.

PCB Piezotronics maintains an ISO-

9001 certified metrology laboratory and

offers calibration services, which are

accredited by A2LA to ISO/IEC 17025,

with full traceability to SI through

N.I.S.T. In addition to the normally

supplied calibration, special testing is

also available, such as: sensitivity at

elevated or cryogenic temperatures,

phase response, extended high or low

frequency response, extended range,

leak testing, hydrostatic pressure

testing, and others. For information on

standard recalibration services or

special testing, contact your local PCB

Piezotronics distributor, sales

representative, or factory customer

service representative.

Returning Equipment –Following

these procedures will insure that your

returned materials are handled in the

most expedient manner. Before

Warranty, Service, Repair, and

Return Policies and Instructions

returning any equipment to PCB

Piezotronics, contact your local

distributor, sales representative, or

factory customer service representative

to obtain a Return Warranty, Service,

Repair, and Return Policies and

Instructions Materials Authorization

(RMA) Number. This RMA number

should be clearly marked on the outside

of all package(s) and on the packing

list(s) accompanying the shipment. A

detailed account of the nature of the

problem(s) being experienced with the

equipment should also be included

inside the package(s) containing any

returned materials.

A Purchase Order, included with the

returned materials, will expedite the

turn-around of serviced equipment. It is

recommended to include authorization

on the Purchase Order for PCB to

proceed with any repairs, as long as

they do not exceed 50% of the

replacement cost of the returned

item(s). PCB will provide a price

quotation or replacement

recommendation for any item whose

repair costs would exceed 50% of

replacement cost, or any item that is not

economically feasible to repair. For

routine calibration services, the

Purchase Order should include

authorization to proceed and return at

current pricing, which can be obtained

from a factory customer service

representative.

Warranty –All equipment and repair

services provided by PCB Piezotronics,

Inc. are covered by a limited warranty

against defective material and

workmanship for a period of one year

from date of original purchase. Contact

PCB for a complete statement of our

warranty. Expendable items, such as

batteries and mounting hardware, are

not covered by warranty. Mechanical

damage to equipment due to improper

use is not covered by warranty.

Electronic circuitry failure caused by the

introduction of unregulated or improper

excitation power or electrostatic

discharge is not covered by warranty.

Contact Information –International

customers should direct all inquiries to

their local distributor or sales office. A

complete list of distributors and offices

can be found at www.pcb.com.

Customers within the United States may

contact their local sales representative

or a factory customer service

representative. A complete list of sales

representatives can be found at

www.pcb.com. Toll-free telephone

numbers for a factory customer service

representative, in the division

responsible for this product, can be

found on the title page at the front of this

manual. Our ship to address and

general contact numbers are:

PCB Piezotronics, Inc.

3425 Walden Ave.

Depew, NY14043 USA

Toll-free: (800) 828-8840

24-hour SensorLineSM: (716) 684-0001

Website: www.pcb.com

E-mail: [email protected]

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

PCB板

电气连接器

压电晶体

环氧

铁氟龙

电子

厚膜基板

电线

电缆

塑料

焊接

铜合金/黄铜

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

DOCUMENT NUMBER: 21354

DOCUMENT REVISION: C

ECN: 45605

Component Name

Hazardous Substances

Lead

(Pb)

Mercury

(Hg)

Cadmium

(Cd)

Chromium VI

Compounds

(Cr(VI))

Polybrominated

Biphenyls

(PBB)

Polybrominated

Diphenyl

Ethers (PBDE)

Housing

PCB Board

Electrical

Connectors

Piezoelectric

Crystals

Epoxy

Teflon

Electronics

Thick Film

Substrate

Wires

Cables

Plastic

Solder

Copper Alloy/Brass

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

1.0 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

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

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