OIL FILLED MELT PRESSURE TRANSMITTERS
WN SERIES Voltage output
The WN series of Gefran, are pressure transmitters for
using in High temperature environment.
The main characteristic of this series is the capability to
read temperature of the media up to 315°C.
The constructive principle is based on the hydraulic trasmission of the pressure.
The fluid-filled system assures the temperature stability.
The phisical measure is transformed in a electrical measure by means the strain-gauge technology.
MAIN FEATURES
• Pressure ranges from:
0-35 to 0-1000 bar / 0-500 to 0-15000 psi
• Accuracy: < ±0.25% FSO (H); < ±0.5% FSO (M)
•Fluid-filled system for temperature stability
•Oil filling meets FDA requirements CFR 178.3620 and
CFR 172.878
•Oil filling volume:
WN0 (30mm3); WN1, WN2, WN3 (40mm3)
•1/2-20UNF, M18x1.5 standard threads; other types avai-
lable on request
• Other diaphragms available on request
• Autozero function on board / external option
• Drift Autocompensation function (SP version)
• 17-7 PH corrugated diaphragm with GTP+ coating
GTP+ (advanced protection)
Coating with high resistance against corrosion, abrasion
and high temperature
AUTOZERO FUNCTION
All signal variations in the absence of pressure can be eliminated by using the Autozero function.
This function is activated by closing a magnetic contact
located on the transmitter housing.
The procedure is permitted only with pressure at zero.
AUTOCOMPENSATES INFLUENCE OF MELT
TEMPERATURE
Thanks to internal self-compensation, the WSP series
transmitter cancels the effect of pressure signal variation
caused by variation of Melt temperature.
This reduces at the minimum the read error caused by
heating of the filling fluid (typical of all sensors built with
“filled” technology).
TECHNICAL SPECIFICATIONS
Accuracy (1)
Resolution
Measurement range
Maximum overpressure
(without degrading performances)
Measurement principle
Power supply
Maximum current absorption
Insulation resistance (at 50Vdc)
Output signal Full Scale (FSO)
Zero balance
(tollerance ± 0.25% FSO)
Zero signals adjustment
(tollerance ± 0.25% FSO)
Span adjustment within ± 5% FSO
Maximum allowed load
Response time (10...90% FSO)
Output noise (RMS 10-400Hz)
Calibration signal
Output short circuit ingress and reverse
polarity protection
Compensed temperature range
Operating temperature range
Storage temperature range
Thermal drift in compesated range:
Zero / Calibration / Sensibility
Diaphragm maximum temperature
Zero drift due to change in process
temperature (zero)
Zero drift temperature for Autocompensated version (SP) within the
temperature range 20°C-315°C inclusive
the drift temperature of the housing
Standard Material in contact
with process medium
Thermocouple (model WN2)
Protection degree
(with 6-pole female connector)
H <±0.25%FSO (100...1000 bar)
M <±0.5%FSO (35...1000 bar)
0..500 to 0..15000psi
1.5 x FS above 500bar/7500psi
5Vdc (M, H) - 10Vdc (N, L)
5,1Vdc (B) - 10,1Vdc (C)
< 0.005 bar/°C 100 ≤ p < 500 bar
0.0022 %FS/°C p ≥ 500 bar
Diaphragm: • 17-7PH corrugated
diaphragm with GTP+
Stem • 17-4 PH
STD: type “J” (isolated junction)
Infinite
0..35 to 0..1000bar
2 x FS
Extensimetric
15...30Vdc N, C
10...30Vdc B, M
-15....+15Vdc H, L
25mA
>1000 MOhm
0Vdc (M, N, H, L)
0.1Vdc (B, C)
“Autozero” function
See Manual
1mA
~ 1ms
< 0.025% FSO
80% FSO
YES
0...+85°C
-30...+105°C
-40...+125°C
< 0.02% FSO/°C
315°C/600°F
< 0.04 bar/°C
IP65
FSO = Full scale output - (1) BFSL method (Best Fit Straight Line): includes
combined effects of Non-Linearity, Hysteresis and Repeatability.
MECHANICAL DIMENSIONS
WN0
D1
1/2 - 20UNF
D2
[ ø0.31” -0.002 ]
D3
[ ø0.41” -0.001 ]
D4
D5
A
B
C
WN2
ø7.8 -0.05
ø10.5 -0.025
ø10.67
[ ø0.42” ]
ø12.7
[ ø0.5” ]
5.56 -0.26
[ 0.22” -0.01 ]
11.2
[ 0.44” ]
15.74
[ 0.62” ]
Ch
[Hex]
16
[ 5/8” ]
WN1 WN3
D1
M18x1.5
[ ø0.394” -0.002 ]
[ ø0.63” -0.003 ]
[ ø0.63” -0.016 ]
A
[ 0.24” -0.01 ]
B
[ 0.58” -0.016 ]
C
ø10 -0.05
ø16 -0.08
ø16 -0.4
ø18
[ ø0.71” ]
6 -0.26
14.8 -0.4
19
[ 0.75” ]
19
[ 3/4” ]
D2
D3
D4
D5
Ch
[Hex]
Exposed
capillary
D1 1/2-20UNF
D2 .307/.305”
[7.80/7.75mm]
D3 .414/.412”
[10.52/10.46mm]
A .125/.120”
[3.18/3.05mm]
B .318/.312”
[8.08/7.92mm]
C .81”
[20.6mm]
NOTE : dimensions refer to rigid stem length option “4” (153 mm – 6”)
WARNING : For installation use a maximum tightening torque of 56 Nm(500 in-lb)
42 [1.65"]
ELECTRICAL CONNECTIONS
VOLTAGE OUTPUT (M, N, B, C)
Power supply 15..30Vdc
Supply Voltage
CONTROLLER
AMPLIF.
Supply Voltage
Signal
Signal
Calibration shunt
AUTOZERO
+
-
+
-
6-pin
C
D
A
B
Shield drain wire is
tied to connector via
cable clamp
Supply Voltage
Supply Voltage
Signal
Signal
Autozero
MAGNETIC
E - F
VOLTAGE OUTPUT (H, L)
Power supply -15..+15Vdc (*)
(*) The Pin B of the connector must be connected to the common of the ± 15Vdc supply
8-pin connector
Connector
PC06A-12-88 (SR)
A
B
C
D
E
F
G
H
Connect the cable sheathing
to the side of the instrument.
E +
Supply voltage
S +
Signal
E -
Supply voltage
S -
Signal
R-Cal
No connection
Magnetic Autozero
version
A = Excitation + (white)
B = Signal + (red)
C = Excitation - (green)
D = Signal - (black)
E = R-Cal (blue)
F = R-Cal (brown)
G = no connection
H = no connection
External Autozero
version
A = Excitation + (white)
B = Signal + (red)
C = Excitation - (green)
D = Signal - (black)
E = Autozero (blue)
F = Autozero (brown)
G = no connection
H = no connection
EXTERNAL
AUTOZERO
+
-
+
-
6-pin
C
D
A
B
E - F
6 pin connector
VPT07RA10-6PT2
(PT02A-10-6P)
8 pin connector
PC02E-12-8P Bendix
AUTOZERO FUNCTION
The Autozero function
is activated through a
magnetic contact (external magnet supplied with
the sensor).
See the manual for a
complete Autozero function explanation.
ACCESSORIES
Connectors
6-pin mating connector (IP65 protection degree) CON300
8-pin mating connector CON307
Extension cables
6-pin connector with 8m (25ft) cable C08WLS
6-pin connector with 15m (50ft) cable C15WLS
6-pin connector with 25m (75ft) cable C25WLS
6-pin connector with 30m (100ft) cable C30WLS
8-pin connector with 8m (25ft) cable E08WLS
8-pin connector with 15m (50ft) cable E15WLS
8-pin connector with 25m (75ft) cable E25WLS
8-pin connector with 30m (100ft) cable E30WLS
Other lengths consult factory
Accessories
Mounting bracket SF18
Dummy plug for 1/2-20UNF SC12
Dummy plug for M18x1.5 SC18
Drill kit for 1/2-20UNF KF12
Drill kit for M18x1.5 KF18
Cleaning kit for 1/2-20UNF CT12
Cleaning kit for M18x1.5 CT18
Fixing pen clip PKIT309
Autozero pen PKIT312
Cable color code
6 wires
Conn. Wire
A Red
Black
B
C White
D Green
E Blue
F Orange
Cable color code
8 wires
Conn. Wire
A White
B Red
C Green
D Black
E Blue
F Orange
G n.c.
H n.c.
Thermocouple for WN2 model
Type “J” (153mm - 6” stem) TTER 601
ORDER CODE
Autocompensation (*)
Standard
(*) available for ranges > to 100bar
(*) not available with WN3 version
OUTPUT SIGNAL
0 .. 5Vdc
0 .. 10Vdc
0.1 .. 5.1Vdc
0.1 .. 10.1Vdc
(supply -15...+15Vdc)
(supply -15...+15Vdc)
Rigid stem + flexible
With thermocouple
Exposed capillary
Standard
(ranges ≥ 100 bar/1500 psi)
bar
3550B35U
70 B07D
100 B01C
200
350 B35D
500 B05C
700
1000 B01M
0 .. 5Vdc
0 .. 10Vdc
CONFIGURATION
Rigid stem
CONNECTOR
6 pin 6
8 pin 8
ACCURACY CLASS
0.25% FSO
0.5% FSO M
RANGE
psi
500
P05C
P75D
B05D
B02C
B07C
750
1000 P01M
1500 P15C
3000 P03M
5000 P05M
7500 P75C
10000 P10M
15000 P15M
W
SP
M
N
B
C
H
L
3
H
000
000= Standard version
Special or customized versions
-
0
1
2
available on request
E
External autozero
Magnetic autozero-
FLEXIBLE LENGTH
(mm / inches) (*)
Standard (WN0)
0
none
Standard (WN1, WN2)
D
457mm
610mmE
760mmF
Standard (WN3)
711mmL
Available on request
A
76mm
B
152mm
C
300mm
RIGID STEM LENGTH
(mm / inches) (*)
Standard (WN0, WN1, WN2)
4
153mm
318mm5
Standard (WN3)
none0
Available on request
1
38mm
2
50mm
3
76mm
6
350mm
400mm
7
8
456mm
(*) max combined stem/flexible
length is 914mm - 36”
THREAD
Standard
1
1/2 - 20 UNF
M18 x 1.54
18”
24”
30”
28”
3”
6”
12”
6”
12.5”
1.5”
2”
3”
14”
16”
18”
Examples
WN2-6-M-B07C-1-4-D-000
Melt pressure transmitter with type “J” thermocouple, 0..10Vdc output, 6-pin connector, 1/2-20UNF thread, 700 bar full scale, 0,5%
accuracy class, 153 mm (6”) rigid stem, 457mm (18”) flexible capillary.
WSPM0-6-M-P03M-1-4-0-000
Melt pressure transmitter autocompensated version, rigid stem, 0..5Vdc output, 6-pin connector, 1/2-20UNF thread, 3000 psi full scale,
0,5% accuracy class, 153 mm (6”) rigid stem.
Sensors are manufactured in compliance with:
- EMC compatibility directive
- RoHS directive
Electrical installation requirements and Conformity certificate are available on our web site: www.gefran.com
GEFRAN reserves the right to make any kind of design or functional modification at any moment without prior notice.
DTS_WN_04-2017_ENG
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