MELT PRESSURE TRANSMITTERS
MD SERIES DP404 CAN OPEN digital output
The MD 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 400°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
Electrical
• Digital output signal with DP404 CAN OPEN communication protocol
• Transmission frequency (Baud rate): 10 Kbaud to 1
Mbaud (default 500 Kbaud)
• Software selection of Baud rate and ID nodes
• Operation with 1 or 2 settable alarm limits
• “Autozero” for temperature compensation
• Zero and span drift compensation
• 80% FSO calibration signal
Mechanical
• Pressure ranges:
0-35 to 0-2000 bar / 0-500 to 0-30000 psi
• Accuracy: < ± 0.25% FSO (H); < ±0.5% FSO (M)
• Hydraulic transmission system to guarantee temperature
stability.(Hg)
• Quantity of Hg contained for model:
series MDE0 (30mm3); series MD1, MD2, MD3 (40mm3)
• Standard threading: 1/2-20 UNF, M18x1.5; other versions
on request
• Autozero function by software
• Stainless steel 15-5 PH diaphragm with GTP+ coating
• For ranges below 100 bar – 1500 psi: stainless steel
17-7PH corrugated diaphragm with GTP+ coating
GTP+ (advanced protection) Coating with high resistance
against corrosion, abrasion and high temperature
TECHNICAL SPECIFICATIONS
Rated precision, including effects of line-
arity, repeatability and hysteresis
Sampling
Pressure ranges
Maximum applicable pressure
Measurement principle
Power supply
Typical input
Insulation resistance (at 50Vdc)
Signal at rated pressure (FSO)
Signal at ambient pressure
Calibration of ambient pressure
Signal protocol
Response time (10 at 90% FSO)
Electronic response time
(10 at 90% FSO)
Calibration signal
Protection against overvoltage and reverse
polarity of power supply
Compensated temperature range of
strain gauge housing
Maximum temperature range of strain
Gauge Housing
Thermal drift in Zero
compensated range; Calibration
Sensitivity
Max. diaphragm temperature
Influence due to variation of fluid tempe-
rature (zero)
Standard material in contact
with process medium
Thermocouple (model MD2)
Protection level
Electrical connections
H < ±0.25%FSO (100…2000 bar)
M < ±0.5%FSO (35…2000 bar)
0-500 to 0-30.000 psi
Insertion of an offset
DP404 CAN OPEN, with baud rate
selectable from 10K to 1M baud
Diaphragm:
• 15-5 PH with GTP+ coating
• 17-7 PH corrugated diaphragm
with GTP+ coating for ranges
<100 bar (1500psi)
Stem:
• 17-4 PH
STD: Type * J (isolated coupling)
16 bit (1)
0-35 to 0-2000 bari
2 x FSO
Strain gauge
12…40 Vdc
20 mA (2)
>1000 MOhm
Depends on FSO
0
(default 500 Kbaud
20 ms
2 ms
80%FSO
YES
0…+85°C
32…+185°F
-30…+105°C
-22…+221°F
<0.02 %FSO/°C
<0.01 %FSO/°F
<0.01 %FSO/°F
400°C (750°F)
15 Psi/100°F
0.02bar/°C
IP65
M12 DIN EN 50044
5-pin connector
(1) resolution: 0.01bar from 35…500bar; 0.1bar from 700…2000bar;
0.1psi from 5000 …350psi; 1psi from 7500…30000psi
(2) Conditions: Power supply 24 Vdc
FSO = Full Scale Output (Signal at rated pressure)
MECHANICAL DIMENSIONS
MD0
D1
D2
D3
D4
D5
A
B
C
MD2
1/2 - 20UNF
ø7.8 -0.05
[ ø0.31” -0.002 ]
ø10.5 -0.025
[ ø0.41” -0.001 ]
ø10.67
[ ø0.42” ]
ø12.7
[ ø0.5” ]
5.56 -0.26
[ 0.22” -0.01 ]
11.2
[ 0.44” ]
15.74
[ 0.62” ]
MD1
Ch
[Hex]
D1
D2
D3
D4
D5
A
B
C
Ch
[Hex]
16
[ 5/8” ]
M18x1,5
ø10 -0.05
[ ø0.394” -0.002 ]
ø16 -0.08
[ ø0.63” -0.003 ]
ø16 -0.4
[ ø0.63” -0.016 ]
ø18
[ ø0.71” ]
6 -0.26
[ 0.24” -0.01 ]
14.8 -0.4
[ 0.58” -0.016 ]
19
[ 0.75” ]
19
[ 3/4” ]
MD3
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)
ELECTRICAL CONNECTIONS
Shielding is connected to transducer body. It is advisable to ground it on the instrument side as well
CAN BUS DP404 DIGITAL OUTPUT
n.c.
Controller
Can Output
power +
power -
Can H
Can L
5-pin
1
2
3
4
5
M12 DIN EN 50044 5-pin connector
ACCESSORIES
Connectors
5 pin female connector (IP65 protection) CON031
Extension cords
5-pin connector with cord length 1 meter (3.3 ft) PCAV161
5-pin connector with cord length 2 meters (7 ft) PCAV162
5-pin connector with cord length 5 meters (17 ft) PCAV163
Other lengths on request
Accessories
Fastening bracket SF18
Protective plug for 1/2 - 20 UNF SC12
Protective plug for M18x1.5 SC18
Punch kit for 1/2-20 UNF KF12
Punch kit for M18x1.5 KF18
Cleaning kit for 1/2-20 UNF CT12
Cleaning kit for M18x1.5 CT18
Cord color code
Conn.
1
2
3
4
5
Wire
n.c.
Red
Black
White
Blue
ORDER CODE
M
OUTPUT SIGNAL
CAN BUS D
CONFIGURATION
Rigid rod
Rigid + flexible rod
With thermocouple
Exposed capillary
CONNECTOR
Standard
5-pin M12 5
PRECISION CLASS
B05D
B02C
B07C
± 0.25%
± 0.5% M
psi
500
750
1000 P01M
1500 P15C
3000 P03M
5000 P05M
7500 P75C
10000 P10M
15000 P15M
20000 P20M
30000 P30M
(ranges ≥100 bar/1500 psi)
MEASUREMENT RANGE
bar
3550B35U
70 B07D
100 B01C
200
350 B35D
500 B05C
700
1000 B01M
1400 B14C
2000 B02M
Example
MD0-5-M-B07C-1-4-0-000
Melt pressure transducer with Can output, 5-pin connector,
1/2 - 20 UNF threading, pressure range 700 bar,
precision class 0.5%, 153 mm (6”) rigid rod.
MD1-5-M-P03M-1-4-D-000
Melt pressure transducer with Can output, 5-pin connector,
1/2 - 20 UNF threading, pressure range 3000 bar, precision
class 0.5%, 153 mm (6”) rigid rod, 457 mm (18”) flexible rod.
0
1
2
3
H
P05C
P75D
000
000= Special executions of the
standard version or custom
versions may be ordered on
request
LENGTH OF FLEXIBLE ROD
(mm / inches)
Standard (MD0)
0
none
Standard (MD1, MD2)
D
457mm
610mmE
760mmF
Standard (MD3)
L
711mm
On request
A
76mm
B
152mm
C
300mm
G
914mm
H
1067mm
I
1220mm
J
1372mm
K
1520mm
LENGHT OF RIGID ROD
(mm / inches)
Standard (MD0, MD1, MD2)
4
153mm
318mm5
Standard (MD3)
On request
THREADING
Standard
On request
0
1
2
3
6
7
8
1
1/2 - 20 UNF
M18 x 1.54
M10 x 1
2
3
M14 x 1.5
none
38mm
50mm
76mm
350mm
400mm
456mm
18”
24”
30”
28”
3”
6”
12”
36”
42”
48”
54”
60”
6”
12.5”
1.5”
2”
3”
14”
16”
18”
Sensors are manufactured in compliance with:
- EMC compatibility directive
Product designed and available in compliance with Directive 2011/65/EU (RoHS II) only for large-scale stationary installation or industrial tools, or for B-to-B laboratory equipments for R&D purposes.
Electrical installation requirements and Conformity certificate are available on our web site: www.gefran.com
GEFRAN spa reserves the right to make aesthetic or functional changes at any time and without notice.
DTS_MD_07-2017_ENG
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