Pressure Transducer - ITW Dynatec DYNAMELT D15 Series Technical Documentation Manual

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:
WE0 (30mm ); WE1, WE2, WE3 (40mm
3
• 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 for ran-
ges below 100 bar-1500 psi
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 eli-
minated 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).
OIL FILLED MELT PRESSURE TRANSMITTERS
WE SERIES
)
3
Pressure Transducer PN 812340
The WE 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 tra-
smission of the pressure.
The fluid-filled system assures the temperature stability.
The phisical measure is transformed in a electrical mea-
sure by means the strain-gauge 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 WE2)
Protection degree
(with 6-pole female connector)
FSO = Full scale output
(1) BFSL method (Best Fit Straight Line): includes combined effects of Non-
Linearity, Hysteresis and Repeatability.
Output 4...20mA
H <±0.25%FSO (100...1000 bar)
M <±0.5%FSO (35...1000 bar)
Infinite
0..35 to 0..1000bar
0..500 to 0..15000psi
2 x FS
1.5 x FS above 500bar/7500psi
Extensimetric
10...30Vdc
32mA
>1000 MOhm
20mA
4mA
"Autozero" function
See Manual
See diagram
~ 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
< 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)
IP65