BULLETIN V1
Model V1 Pressure Transducer
The Ashcroft®Model V1
premier pressure transducer
utilizes fused silicon strain gage
technology. This unique technol-
ogy is based on a principle that
results in superior linearity and
repeatability performance, high
proof and burst pressure toler-
ance, and wideoperating tem-
peraturecapability.
The pressure sensing element
and the process connection are
of a one-piece construction, with
no weld joints to compromise
the strength and reliability of the
structure. There are no epoxies
or organic materials to con-
tribute to signal instability or
drift. This robust unit is virtually
unaffected by shock, vibration,
mounting position, or pressure
pulsation. The wide operating
temperature range, all-stainless
steel wetted materials, high over-
pressure protection and highly
reliable Ashcroft electronics,
makes the V1 transducer
a solid choice for many
applications.
TRANSDUCER OPERATIONS
The Ashcroft
®
V1 high performance
pressure transducer featuring
monolithic construction and fused
silicon gage technology is
specifically designed to meet
the demanding needs of industrial
and hydraulic applications.
• Compressor/Pump Control
• Fuel Management Systems
• Machine Tools
• Lift Trucks
• Hydraulic Stamping Presses
• Railroad Braking Systems
• Process Monitoring
• General Industrial
• Numerous Hydraulic Applications
PERFORMANCE CHARA CTERISTICS
Accuracy Class (F.S.) 0.5% 1.0%
Nonlinearity
Terminal Point* ± 0.4 ± 0.7
B.F.S.L. ± 0.25 ± 0.4
Hysteresis +0.05 +0.1
Nonrepeatability ±0.05 ±0.1
Interchangeability ±0.5% ±1.0%
* Including Hysteresis
Standard Ranges (psis):
0/100 0/1500 0/7500
0/200 0/2000 0/10,000
0/500 0/3000 0/15,000
0/750 0/3600 0/20,000
0/1000 0/5000
Consult factory for nonstandard ranges
Stability: ± 0.5% F.S./year
Durability: 108cycles 15/115% F.S. with
negligible performance change
ENVIRONMENTAL CHARACTERISTICS
Temperature:
Storage –65/+275°F –54/+135°C
Operating –40/+250°F –40/+121°C
Compensated
0.50% –4/+185°F –20/+85°C
1.00% –40/+212°F –40/+100°C
Thermal Coefficients: (68°F ref.)
ZeroSpan
0.5% ± 0.015% F.S./°F ± 0.015% F.S./°F
1.0% ± 0.02% F.S./°F ± 0.02% F.S./°F
Humidity: No performance effects at 95%
relative humidity – noncondensing
FUNCTIONAL CHARA CTERISTICS
Overpressure: (F.S.)
Unit Range Proof Burst
0/100-0/500 300% 1500%
0/750-0/2000 300% 1000%
0/3000-0/5000 300% 750%
0/7500* 300% 750%
0/10,000* 300% 750%
0/15,000* 275% 750%
0/20,000* 250% 750%
*Burst rating slightly lower for two-piece connections,
consult factory
P osition Eff ect: Less than 0.01%F.S.
Vibration: Less than ± 0.1% F.S. effect for
50-2000Hz at 5 g’s in any axis
ELECTRICAL SPECIFICATIONS
Output Signal:
4-20mA (2 wire)
1-6Vdc (3 wire)
1-5Vdc (3 wire)
0.5-4.5Vdc (3 wire) (Non-ratiometric)
P ower Requirements:
10-36 Vdc unregulated
All units are reverse polarity protected
Supply Current: Less than 10mA
RFI Protection: Standard
IEC 801-3 Level 4 at 20 v/m
Response Time: Less than 5ms typical
Circuit to Case Insulation Resistance:
100 MΩ@ 250Vdc
PHYSICAL CHARA CTERISTICS
Process Connections:
1⁄8NPT male* or female*
1⁄4NPT male or female
7⁄16-20 male*
*Two-piece process connection.
Consult factory for other process connections.
Enclosure: NEMA 4X, all welded,
hermetically sealed
Case: All-welded 300 series stainless steel
Socket/Diaphragm:
Monolithic construction, 17-4 pH SS
W eight: Approx. 6 oz.
OPTIONAL FEATURES
Temperature output and switching option (TTL
level) available – consult factory for details
Bendix®is registered trademark of Amphenol Corp.
Hirschmann®is registered trademark of Richard
Hirschmann of America, Inc.
Socket Material
17-4PH Stainless Steel
1.52
(38.6)
2.2
(54.9)
1.81
(46.02)
Housing
Material
304 SS
0.62
(15.6) 0.25
(6.4)
1/4 NPT 0.875
Wrench
Flats
#16 Gage Wires
12˝ Long
Loop Supply Voltage vs.
Loop Resistance
for 4-20mA Output Only
Loop Supply Voltage (Vdc)
Vmin = 10V + [.022A*(RL)]
*includes a 10% safety factor
RL = RS + RW
RL = Loop Resistance (ohms)
RS = Sense Resistance (ohms)
RW = Wire Resistance (ohms)
Loop Resistance (Ohms)
1000
750
500
250
0
0362010
1182
30
Model V1 Pressure Transducer/Transmitter
38 WELLINGTON ROAD
MILFORD, CT 06460
(203) 783-6650 Customer Service
(203) 783-6659 Fax
www.dresser.com/instruments
All specifications are subject to change without notice. All sales subject to standard terms and conditions. © Dresser Instrument Division 2/98 5M DPI 5P-2/98
How To Order
MODEL TYPE
OUTPUT
15 = 1-5 Vdc
16 = 1-6 Vdc
42 = 4-20mA
45 = 0.5-4.5 Vdc
Nonratiometric
ACCURACY CLASS
5 = 0.5%
7 = 1.0%
PRESSURE CONNECTION
F01 = 1/8 NPT-F
F02 = 1/4 NPT-F
M01 = 1/8 NPT-M
M02 = 1/4 NPT-M
MEK= 7/16-20-M
Pressure ranges up to and
including 10,000 psi
ELECTRICAL TERMINATION
12 = 12˝ 16 AWG Wire Leads
F2 = 3 ft. Cable
F4 = 6 ft. Cable
F5 = 9 ft. Cable
F6 = 12 ft. Cable
F7 = 15 ft. Cable
F8 = 20 ft. Cable
P1 = Custom Cable Length
(specify length)
PRESSURE RANGES
(100) 100 psi
(10,000) 10,000 psi
X VARIATIONS
See Drawing
64A234
V1
Dimensions
