Ashcroft A4 - Pressure Transmitter Manuel d'utilisateur télécharger pdf

A4 INTRINSICALLY SAFE &

NON-INCENDIVE RATED

PRESSURE TRANSMITTER

INSTRUCTION SHEET

.50

3.065

4.45

.885

1.06

DIA.

1.06 Hex.

Common For All

Pressure Fittings

Cable style

electrical

termination

Threaded Male Process Connection

Ashcroft

A4 Pressure Transmitter, Typical Dimensions and Construction*

Enclosure Option “S” Enclosure Option “W”

Dimensions and construction details may vary based on product specified.

Conduit style

electrical

termination

All sales subject to standard terms and conditions of sale.

I&M011-10166-A4. Rev. 12/12

WARNING! READ

BEFORE INSTALLATION

1. GENERAL:

A failure resulting in injury or damage

may be caused by excessive over-

pressure, excessive vibration or

pressure pulsation, excessive instru-

ment temperature, corrosion of the

pressure containing parts, or other

misuse. Consult Ashcroft Inc.,

Stratford, Connecticut, USA before

installing if there are any questions

or concerns.

2. OVERPRESSURE:

Pressure spikes in excess of the rated

overpressure capability of the transducer

may cause irreversible electrical

and/or mechanical damage to the

pressure measuring and containing

elements.

Fluid hammer and surges can destroy

any pressure transducer and must

always be avoided. A pressure snubber

should be installed to eliminate the

damaging hammer effects. Fluid ham-

mer occurs when a liquid flow is sud-

denly stopped, as with quick closing

solenoid valves. Surges occur when



.887˝

4.78˝

3.065˝

.675˝

1.06˝

DIA.

(22.5)

(121)

(78)

(17)

(27)

.887˝

4.78˝

3.065˝

.885˝

1.06˝ (27) Hex.

Common For All

Pressure Fittings

(22)

(78)

(121)

(22.5)

1.06˝

DIA.

(27)

flow is suddenly begun, as when a

ump is turned on at full power or a

valve is quickly opened.

iquid surges are particularly damaging

to pressure transducers if the pipe is

originally empty. To avoid damaging

surges, fluid lines should remain full (if

possible), pumps should be brought up

to power slowly, and valves opened

slowly. To avoid damage from both fluid

hammer and surges, a surge chamber

should be installed.

Symptoms of fluid hammer and surge's

damaging effects:

• Pressure transducer exhibits an out-

put at zero pressure (large zero offset).

• Pressure transducer output remains

constant regardless of pressure

• In severe cases, there will be no output.

FREEZING:

Prohibit freezing of media in pressure

port. Unit should be drained (mount in

vertical position with electrical termina-

tion upward) to prevent possible over-

pressure damage from frozen media.

3. STATIC ELECTRICAL CHARGES:

Any electrical device may be suscepti-

ble to damage when exposed to static

electrical charges. To avoid damage to

the transducer observe the following:

• Operator/installer should follow the

roper ESD (electrostatic discharge)

protection procedures before handling

the pressure transducer.

• Ground the body of the transducer

BEFORE making any electrical

connections

• When disconnecting, remove the

ground LAST!

Note: The shield and drain wire in the

cable (if supplied) is not connected to

the transducer body, and is not a suit-

able ground.

4. HAZARDOUS AREA SPECIFIC GUIDELINES

1. Do not open unit when energized.

2. Do not diconnect equipment unless

area is known to be non-hazardous.

1 2 3 4 5 6

Résumé du contenu

Page 1 - BEFORE INSTALLATION

A4 INTRINSICALLY SAFE & NON-INCENDIVE RATEDPRESSURE TRANSMITTERINSTRUCTION SHEET .503.0654.45.8851.06 DIA.1.06 Hex. Common Fo

Page 2 - CLASS lll

Page 3 - CLASS llI

Page 4 - “Z” and “S” pots

Power SupplyPower Supply VoltageOutput Signal Min Max4-20mA* 12V** 30V* Refer to Ashcroft drawing #825A022 forsupply voltage and load limit.** The min

Page 5 - NON-INCENDIVE RATED

A4 INTRINSICALLY SAFE & NON-INCENDIVE RATEDPRESSURE TRANSMITTERINSTRUCTION SHEET.600(4) PIN BENDIX STYLEELECTRICAL TERMINATIONSHELL SIZE 8(B4), (H

Page 6

Ashcroft Inc.250 East Main Street Stratford, CT 06614-5145 USATel: 203-378-8281 • Fax: 203-385-0402email: [email protected] our w

Commentaires sur ces manuels

Pas de commentaire

Ashcroft A4 - Pressure Transmitter Manuel d'utilisateur

Naviguer en ligne ou télécharger Manuel d'utilisateur pour Instruments de mesure Ashcroft A4 - Pressure Transmitter. Ashcroft A4 - Pressure Transmitter User Manual Manuel d'utilisatio

Résumé du contenu

Commentaires sur ces manuels

Produits connexes et manuels pour Instruments de mesure Ashcroft A4 - Pressure Transmitter