GefranME0-6-M-B35D-1-4压力变送器

The ME Performance Level ‘c’ series of Gefran are
pressure transmitters for using in high temperature envi-
ronment.
The main characteristic of this series is the capability to
read temperature of the media up to 400°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 of the strain-gauge technology.
MAIN FEATURES
? Pressure ranges from:
0-35 to 0-2000 bar / 0-500 to 0-30000 psi
? Accuracy: < ±0.25% FSO (H); < ±0.5% FSO (M)
? Fluid-filled system for temperature stability
? Mercury filling volume:
ME0 (30mm 3 ); ME1, ME2 (40mm 3 )
? 1/2-20UNF, M18x1.5 standard threads; other types avai-
lable on request
? Autozero function on board / external option
? Standard diaphragm is 15-5 PH stainless steel with
GTP coating
? 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.
TECHNICAL SPECIFICATIONS
MELT PRESSURE TRANSMITTERS
ME SERIES PERFORMANCE LEVEL ‘c’
Output 4...20mA
Accuracy (1)
H <±0.25%FSO (100...2000 bar)
M <±0.5%FSO (35...2000 bar)
Resolution 16 bit
Measurement range
0..35 to 0..2000bar
0..500 to 0..30000psi
Maximum overpressure
(without degrading performances)
2 x FS
1.5 x FS above 1000bar/15000psi
Measurement principle Extensimetric
Power supply 13...30Vdc
Maximum current absorption
23mA
(40mA with relay optional)
Output signal Full Scale FSO 20mA
Zero balance
(tollerance ± 0.25% FSO)
4mA
Response time (10...90% FSO) 8ms
Output noise (RMS 10-400Hz) < 0.025% FSO
Calibration signal 80% FSO
Power supply polarity reverse
protection
YES
Compensed temperature range
housing
0...+85°C
Operating temperature range hou-
sing
-30...+85°C
Storage temperature range housing -40...+125°C
Thermal drift in compesated range:
Zero / Calibration / Sensibility
< 0.02% FSO/°C
Diaphragm maximum temperature 400°C / 750°F
Zero drift due to change in process
temperature (zero)
< 0.02 bar/°C
Standard material in contact
with process medium
Diaphragm:
? 15-5PH with GTP coating
? 17-7 PH corrugated diaphragm
with GTP coating for ranges
<100bar (1500psi)
Stem: ? 17-4 PH
Thermocouple (model ME2) STD : type “J” (isolated junction)
Protection degree
(with 6-pole female connector)
IP65
FSO = Full scale output : (1) BFSL method (Best Fit Straight Line): includes combined
effects of Non-Linearity, Hysteresis and Repeatability