PCB Piezotronics IMI SENSORS 642A10/034BZ Manuel utilisateur

Model 642A10/034BZ

4-20 mA Output Velocity Sensor

Installation and Operating Manual

For assistance with the operation of this product,

contact PCB Piezotronics, Inc.

Toll-free: 800-959-4464

24-hour SensorLine: 716-684-0001

Fax: 716-684-3823

E-mail: [email protected]

Web: www.imi-sensors.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 traceablility to 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 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, NY 14043 USA

Toll-free: (800) 828-8840

24-hour SensorLineSM: (716) 684-0001

Website: www.pcb.com

E-mail: [email protected]

DOCUMENT NUMBER: 21354

DOCUMENT REVISION: B

ECN: 17900

SENSOR

S AND INSTRUMENTATIO

N FOR MACHINE CONDIT

ION MONITORING

Model 642/643/647/648 A Series Industrial 4-20mA Sensor

Operating Guide with Enclosed Warranty Information

3425 Walden Avenue, Depew, New York 14043-2495

Phone (716) 684-0003

Fax (716) 684-3823

Toll Free Line 1-800-959-4IMI

MANUAL NUMBER: 25778

MANUAL REVISION: C

ECN NUMBER: xxxxx

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SENSORS AND INSTRUME

NTATION FOR MACHINE

CONDITION MONITORING

Table of Contents

Introduction...................................................................................................................... Page 3

General Features

Dimension Drawing.......................................................................................................... Page 4

Operation and Wiring....................................................................................................... Page 5

Standard Wiring

Taking Measurements

RV Option

TO Option

Installation........................................................................................................................ Page 9

ESD Sensitivity.............................................................................................................. Page 10

Warranty/Servicing

Warranty, Service & Return Procedure.......................................................................... Page 11

Customer Service.......................................................................................................... Page 12

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SENSORS AND INSTRUME

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CONDITION MONITORING

Introduction

The Model 642/643/647/648 A Series Industrial 4-20mA Sensors combine the capabilities of a piezoelectric

vibration sensor and a 4-20mA vibration transmitter. The sensor outputs a 4-20mA signal that is proportional to

the overall velocity or acceleration of the machinery. Ideal for monitoring the vibration of process equipment such

as fans, motors and pumps, the output of the sensor is used for process control or predictive maintenance. There

are many options in this series. Please refer to specific specification sheets for further details.

General Features

 Imbedded Piezoelectric Accelerometer for improved accuracy and frequency response.

 Vibration range can be in Acceleration or Velocity.

 Allows for continuous vibration monitoring of critical applications.

 Reduces sophisticated vibration analysis requirements.

 RV (Raw Vibration) option for conducting frequency analysis and machinery diagnostics.

 TO (Temperature Output) option via an independent 4-20mA loop.

 Readily interfaces to existing process control and predictive maintenance equipment.

 Rugged stainless steel construction for applications in harsh environments.

 Flexible design allows for various custom requirements.

 Swivel mount simplifies installation.

 Cable may be positioned in any direction.

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SENSORS AND INSTRUME

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CONDITION MONITORING

Dimension Drawing

1.05

[26.7]

PIN B:

NEGATIVE

4-20 mA

PIN A:

POSITIVE

4-20 mA

1/8" HEX ALLEN

KEY REQUIRED

MOUNTING STUD

MODEL 080A162

(SUPPLIED) 1/4-28 UNF-2A

3/4-16 UNF-2A

1.41

[35.8] 7/8 (22) HEX

1.98[45.7]

1.24

[ 31.5]

ELECTRICAL CONNECTOR

5/8-24 UNEF-2A

2 - PIN (MIL-C-5015)

Inch (mm)

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SENSORS AND INSTRUME

NTATION FOR MACHINE

CONDITION MONITORING

Operation and Wiring

Standard Wiring

The Model 642/643/647/648 A Series operates from a standard 2-wire, 4-20mA loop. If using a loop powered

unit, attach the positive (+) input from the power supply to Pin A or Red wire on the sensor and the negative (-)

input from the power supply to Pin B or Blue wire of the sensor.

Figure 1 –wiring: loop powered Figure 2 –wiring: loop powered/DC source

If using a standard DC power supply, install either an ammeter and/or load resistor in line with the output, Pin B or

Blue wire.

The resistor will generate a DC voltage that is proportional to current by:



If R ohms and I mA thenV VDC



500 6 3,

Note:

- Resistor value must be less than: (Vsupply –12) x 50.

- For integral cable sensors: RED wire is positive, BLUE wire is negative.

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SENSORS AND INSTRUME

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CONDITION MONITORING

Taking Measurements

When measuring the current output from the unit, use the following formula to calculate the vibration level:

Vibration Output = (Measured Output –4mA) x (Full Scale Vibration Output /16mA)

Measured mA 642AX0 642AX1 642AX2

4.00 0.0 ips, pk 0.0 ips, pk 0.0 ips, pk

8.00 0.125 ips, pk 0.25 ips, pk 0.5 ips, pk

12.0 0.25 ips, pk 0.5 ips, pk 1.0 ips, pk

15.75 0.37 ips, pk 0.73 ips, pk 1.47 ips, pk

20 0.5 ips, pk 1.0 ips, pk 2.0 ips, pk

Measured mA 643AX0 643AX1 643AX2

4.00 0.0 ips, rms 0.0 ips, rms 0.0 ips, rms

8.00 0.125 ips, rms 0.25 ips, rms 0.5 ips, rms

12.0 0.25 ips, rms 0.5 ips, rms 1.0 ips, rms

15.75 0.37 ips, rms 0.73 ips, rms 1.47 ips, rms

20 0.5 ips, rms 1.0 ips, rms 2.0 ips, rms

Measured mA 647 648

4.00 0.0 g rms 0.0 g rms

8.00 1.25 g rms 2.50 g rms

12.0 2.50 g rms 5.00 g rms

15.75 3.67 g rms 7.34 g rms

20 5.00 g rms 10.0 g rms

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SENSORS AND INSTRUME

NTATION FOR MACHINE

CONDITION MONITORING

RV Option

The RV (raw vibration) option includes a 100mV/g ±20% additional output. The accelerometer frequency range is

1 Hz-10 kHz, maximum amplitude of 15 g-pk. Data collectors or analyzers can use this vibration signal for further

analysis.

Figure 3 –RV wiring

For integral cable sensors:

RED 4-20mA Positive

BLACK 4-20mA Negative (same as green)

GREEN -RV Acceleration Negative (same as black)

WHITE +RV Acceleration Positive

Note:

-The Acceleration Signal Negative has to be isolated from any grounding. If this terminal is grounded, the 4-

20mA loop will short, causing no output.

-The acceleration output signal is ideally suited for use with portable battery powered data collectors or analyzers.

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