Ashcroft G2 User manual

G2 & T2 PRESSURE TRANSMITTER
INSTRUCTION SHEET
WARNING! READ
BEFORE INSTALLATION
1. GENERAL:
A failure resulting in injury or da age 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 echanical da age to the pres-
sure measuring and containing elements.
Fluid ha er 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.
FREE ING:
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 TERMINATI N
F R T2 (EW), (E ), (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 one White
3 Case Gnd. Case Gnd. Green
4 Common Common Black
IP65 Ingress rating
DIN 43650 F RM A (EN 175301-803-A)
ELECTRICAL TERMINATI N
(DN), (D ), (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 one White
G D Case Gnd. Case Gnd. Green
IP65 Ingress rating
4-PIN BENDIX STYLE ELECTRICAL
TERMINATI N (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 one White
C Case Gnd. Case Gnd. Green
D Common Common Black
IP65 Ingress rating
SHIELDED CABLE, PVC JACKET, 24
AWG LEADS, TERMINATI N (F2), (P1)
Wire Voltage 4-20mA
Color Output Output
Red V + V +
White Output one
Black Common Common
Green Case Gnd. Case Gnd.
Bare** Drain Wire Drain Wire
IP65 Ingress rating
© 2011 Ashcroft Inc., 250 East Main Street, Stratford, CT 06614 USA,
Tel: [phone], Fax [phone] www.ashcroft.com
All sales subject to standard terms and conditions of sale.
All rights reserved. I&M011-10129 03/2011 Rev. 10/2012, 07/13
T2 ELECTRICAL TERMINATIONS AND WIRING
T2 ELECTRICAL TERMINATIONS AND WIRING
** Where shielded wiring is being used; Connec he drain wire o he guard
erminal on he read ou device or measuring ins rumen if available. In all
o her cases connec o he ground of he power supply nega ive erminal.
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
3
2
1
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 ei her V- ermina ion on G2 wi h
4-20mA ou pu
* Use ei her V- ermina ion on G2 wi h
4-20mA ou pu
* Use ei her V- ermina ion on G2 wi h 4-20mA ou pu
23
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 ei her V- ermina ion on G2 wi h 4-20mA ou pu
DIN 43650 F RM C (EN 175301-803-C)
ELECTRICAL TERMINATI N
(DC), (N1), (N2), (N3), (N9)
Mates to Hirschmann P/ : GSS R 300,
Ashcroft P/ 300A126-01
Connection - PIN
1
2
3
V out
Vs-
Vs+
M12 ELECTRICAL TERMINATI N
F R G2 (EW), (E ), (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!
ote: The shield and drain wire in the cable (if sup-
plied) is not connected to the transducer body, and is
not a suitable ground.
DESCRIPTI N
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 INSTALLATI N
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 PT 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.
D N T 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 INSTALLATI N
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]
P
(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
3
2
1
2345
* Use ei her V- ermina ion on G2 wi h 4-20mA ou pu
* Use ei her V- ermina ion on G2 wi h 4-20mA ou pu
* Use ei her V- ermina ion on G2 wi h 4-20mA ou pu