Layout 6 Manual Transducers G2 T2

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G2 & T2 PRESSURE TRANSMITTER

INSTRUCTION SHEET

WARNING! READ

BEFORE INSTALLATION

1. GENERAL:

A failure resulting in injury or damage may be

caused by excessive overpressure, excessive vi-

bration or pressure pulsation, excessive instrument

temperature, corrosion of the pressure containing

parts, or other misuse. Consult Ashcroft Inc., Strat-

ford, 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 pres-

sure 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 damag-

ing hammer effects. Fluid hammer occurs when a liq-

uid flow is suddenly stopped, as with quick closing

solenoid valves. Surges occur when flow is suddenly

begun, as when a pump is turned on at full power or

a valve is quickly opened.

Liquid 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 cham-

ber should be installed.

Symptoms of fluid hammer and surge's damaging

effects:

• Pressure transducer exhibits an output at zero

pressure (large zero offset).

• Pressure transducer output remains constant re-

gardless 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 termination upward) to prevent possible

overpressure damage from frozen media.



M12 ELECTRICAL TERMINATION

FOR T2 (EW), (EO), (E2), (E1)

Mates to optional Hirschmann connector

Part 933 172-100 or equal

Pin Voltage 4-20mA Mating

No. Output Output* Cable Color

1 V + V + Red

2 Output None White

3 Case Gnd. Case Gnd. Green

4 Common Common Black

IP65 Ingress rating

DIN 43650 FORM A (EN 175301-803-A)

ELECTRICAL TERMINATION

(DN), (DO), (D2), (D1)

Mates to optional Hirschmann connector

GDM 3009 or equal

Pin Voltage 4-20mA Mating

No. Output Output* Cable Color

1 V + V + Red

2Common Common Black

3 Output None White

GND Case Gnd. Case Gnd. Green

IP65 Ingress rating

4-PIN BENDIX STYLE ELECTRICAL

TERMINATION (B4), (H1), (L1), (P2)

Mates to optional Amphenol Bendix connector PTO6A-8-

4-SR or equal

Pin Voltage 4-20mA Mating

No. Output Output* Cable Color

A V + V + Red

B Output None White

C Case Gnd. Case Gnd. Green

D Common Common Black

IP65 Ingress rating

SHIELDED CABLE, PVC JACKET, 24

AWG LEADS, TERMINATION (F2), (P1)

Wire Voltage 4-20mA

Color Output Output

Red V + V +

White Output None

Black Common Common

Green Case Gnd. Case Gnd.

Bare** Drain Wire Drain Wire

IP65 Ingress rating

Tel: 203-378-8281, Fax 203-385-0402 www.ashcroft.com

All sales subject to standard terms and conditions of sale.

T2 ELECTRICAL TERMINATIONS AND WIRING

** Where shielded wiring is being used; Connect the drain wire to the guard

terminal on the read out device or measuring instrument if available. In all

other cases connect to the ground of the power supply negative terminal.

DEUTSCH DT SERIES DT04-3P

Pin Voltage 4-20mA Mating

No. Output Output* Cable Color

1 (B) Common V –Black

2 (C) Output V –White

3 (A) V + V +Red

3 (A)

2 (C)

1 (B)

DEUTSCH DTM SERIES DTM04-3P

Pin Voltage 4-20mA Mating

No. Output Output* Cable Color

1 V + V + Red

2 Common V –Black

3 Output V –White

G2 ELECTRICAL TERMINATIONS AND WIRING G2 ELECTRICAL TERMINATIONS AND WIRING

16 8

SHIELDED CABLE, PVC JACKET,

24AWG LEADS

Wire Voltage 4-20mA

Color Output Output*

Red V + V +

Black Common V –

White Output V –

Bare** Shield Shield

Drain Wire Drain Wire

IP67 Ingress rating

FLYING LEADS 18AWG

Wire Voltage 4-20mA

Color Output Output*

Red V + V +

BlackCommon V – V –

White Output

IP67 Ingress rating

* Use either V- termination on G2 with

4-20mA output

* Use either V- termination on G2 with

4-20mA output

* Use either V- termination on G2 with 4-20mA output

1.76

Wire

Length

.95

(45)

(6)

(24)

1.06

(27)

Pin Voltage 4-20mA Mating

No. Output Output* Cable Color

1 V + V +Red

2 Common V –Black

3 Output White

IP65 Ingress rating

* Use either V- termination on G2 with 4-20mA output

DIN 43650 FORM C (EN 175301-803-C)

ELECTRICAL TERMINATION

(DC), (N1), (N2), (N3), (N9)

Mates to Hirschmann P/N: GSSNR 300,

Ashcroft P/N 300A126-01

Connection - PIN

V out

Vs-

Vs+

M12 ELECTRICAL TERMINATION

FOR G2 (EW), (EO), (E2), (E1)

Mates to optional Hirschmann connector

Part 933 172-100 or equal

Pin Voltage 4-20mA Mating

No. Output Output* Cable Color

1 V + V + Red

2 Case Grd. Case Grd. Green

3 Common V – Black

4 Output V – White

IP67 Ingress rating

Pin 1

Pin 2

Pin 3

Pin 4

KEY

3. STATIC ELECTRICAL CHARGES:

Any electrical device may be susceptible to damage

when exposed to static electrical charges. To avoid

damage to the transducer observe the following:

• Ground the body of the transducer BEFORE mak-

ing any electrical connections.

• When disconnecting, remove the ground LAST!

Note: The shield and drain wire in the cable (if sup-

plied) is not connected to the transducer body, and is

not a suitable ground.

DESCRIPTION

The Ashcroft Model G2 and T2 pressure transducers

are high performance instruments intended for use in

industrial applications where the process media is com-

patible with the 17-4PH stainless steel sensor material

and the 304 SS process connection.

MECHANICAL INSTALLATION

Environmental

The G2 and T2 transducers can be stored and used

within the temperature limits of –40°C to 125°C (-40°F

to 257°F). Ingress protection ratings of the units are de-

pendent on the electrical termination specified. Refer to

the wiring diagrams on the reverse for the IP rating of

the unit which is being installed.

Mounting

The G2 and T2 transducers require no special mount-

ing hardware and can be mounted in any orientation

with negligible position error. Although the units can

withstand considerable vibration without damage or

significant output effects, it is always good practice to

mount the transducer where there is minimum vibra-

tion. For units with NPT type pressure fittings apply

sealing tape or an equivalent sealant to the threads

before installing. When instal-ling or removing the unit

apply a wrench to the hex wrench flats, located above

the pressure fitting.

DO NOT tighten by using a pipe wrench on the hous-

ing. A 27mm (11⁄16˝) wrench can be used on the wrench

flats of the hex. For G2 models with detachable electri-

cal connectors a 6 point deep socket can also be used

to install the unit.

Electro-Magnetic Interference

The circuitry of the G2 and T2 transducers is designed

to minimize the effect of electromagnetic and radio fre-

quency interference. To minimize susceptibility to noise,

avoid running the termination wiring in a conduit which

contains high current AC power cables. Where possible

avoid running the termination wiring near inductive

equipment.

Field Adjustments

The G2 and T2 transducers are precisely calibrated

and temperature compensated at the factory to ensure

long and stable performance. There are no field acces-

sible adjustments on the G2 or T2 transducers.

ELECTRICAL INSTALLATION

Please refer to the reverse of this page for power sup-

ply requirements and for appropriate wiring protocol

based on the particular output signal and electrical

terminal.

Power Supply Requirements:

Output Signal Min Supply Max Supply

Ratiometric* 4.5Vdc 5.5Vdc

(0.5V to 4.5V)

0-5Vdc 9Vdc 36Vdc

1-5Vdc 9Vdc 36Vdc

1-6Vdc 9Vdc 36Vdc

0-10V 14Vdc 36Vdc

0.5-4.5Vdc 9Vdc 36Vdc

4-20mA** 9Vdc 36Vdc

*0.5Vdc-4.5Vdc output is ratiometric to the

nominal 5Vdc supply

**For transmitters with 4-20mA output signal,

the minimum voltage at the terminals is

9Vdc. However, the minimum supply voltage

should be calculated using the adjacent

graph and formula.

To determine minimum loop supply voltage:

LSV(min)=9(V)+[.022(A)*RL]

Where:

LSV= Loop Supply Voltage (Vdc)

RL= RS+ RW (ohms)

RL= Loop Resistance (ohms)

RS= Sense Resistance (ohms) [Measuring Instrument]

RW= Wiring Resistance (ohms)

10 40

9 (min) 36 (max)

Loop Supply Voltage (Vdc) [LSV]

(4-20mA ONLY)

Loop Resistance (RL-Ohms)

1400

1200

Power Supply Voltage vs Loop Resistance

G2 & T2 ELECTRICAL INSTALLATION

G2 & T2 ELECTRICAL INSTALLATION (cont.)

Wiring Diagrams (see following pages for further detail)

G2 ELECTRICAL TERMINATIONS AND WIRING

3-PIN DELPHI (PACKARD)

METRI-PACK 150 SERIES

Mates to Optional Metri-Pack connector 12065287

Pin Voltage 4-20mA Mating

No. Output Output* Cable Color

ACommon V –Black

B V + V + Red

COutput V –White

IP67 Ingress rating

HIRSCHMANN G SERIES

Mates to Optional Hirschmann G4W1F connector, or equal

Pin Voltage 4-20mA Mating

No. Output Output* Cable Color

1 V + V + Red

2 Common V –Black

3 Output V –White

4 Case Gnd. Case Gnd. Green

IP67 Ingress rating

AMP SUPERSEAL

Pin Voltage 4-20mA Mating

No. Output Output* Cable Color

1 Common V –Black

2 Output V –White

3 V + V +Red

2345

* Use either V- termination on G2 with 4-20mA output

Layout 6 Manual Transducers G2 T2

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