NaK FILLED MELT PRESSURE
TRANSMITTERS
SERIE KD DP404 CAN OPEN digital output
The KD Series are for use in high temperature applications where the process temperatures may reach 538°C
(1000°F) such as high temperature engineered polymers.
The K Series utilizes standard melt pressure principles
and construction, but uses a near incompressible NAK
(Sodium Potassium) for pressure transmission.
The K Series strain sensing technology is bonded foil
strain gage.
MAIN FEATURES
Electrical
• Digital output signal with DP404 CAN OPEN
communication protocol
• Transmission frequency (Baud rate):
10 Kbaud to 1Mbaud (default 500 Kbaud)
• Software selection of Baud rate and ID nodes
• Operation with 1 or 2 settable alarm limits
• “Autozero” for temperature compensation
• 80% FSO calibration signal
Mechanical
• Pressure ranges: 0-35 to 0-1000 bar / 0-500 to 0-15000 psi
• Accuracy: < ± 0.25% FSO (H); < ±0.5% FSO (M)
• Hydraulic transmission system to guarantee temperature
stability (NaK). Liquid conforming to RoHS Directive.
NaK is defined as a safe substance (GRAS).
• Quantity of NaK contained per model:
KD0 series (30mm³) [0.00183 in³], KD1,KD2,KD3
(40mm³) [0.00244 in³]
• Standard threading: 1/2-20 UNF, M18x1.5; other versions
on request.
• Inconel 718 diaphragm with GTP+ coating for
temperatures up to 538°C (1000°F)
• 15-5 PH diaphragm with GTP+ coating for temperatures
up to 400°C (750°F)
• Hastelloy C276 diaphragm for temperatures up to 300°C
(570°F).
• 17-7 PH corrugated diaphragm with GTP+ coating for
ranges below 100 bar-1500 psi up to 400°C (750°F)
• Stem material: 17-4 PH
GTP+ (advanced protection) Coating with high resistance against
corrosion, abrasion and high temperature.
TECHNICAL SPECIFICATIONS
Accuracy (1)
Sampling 16 bit
Measurement range
Maximum overpressure
(without degrading performances)
Measurement principle Extensimetric
Power supply 12...40Vdc
Maximum current absorption 20mA
Insulation resistance
(at 50Vdc)
Output signal Full Scale FSO Depends on FSO
Zero balance 0
Calibration of ambient
pressure
Signal protocol
Response time
(10 at 90% FSO)
Electronic response time
(10 at 90% FSO)
Calibration signal 80% FSO
Protection against overvoltage
and reverse polarity of power
supply
Compensated temperature
range
Operating temperature range -30…+105°C
Thermal drift in compesated
range:
Zero / Calibration / Sensibility
Diaphragm maximum
temperature
Zero drift (zero)
Thermocouple (model KD2) STD : type “J” (isolated junction)
Protection degree
(with 5-pole female connector)
FSO = Full Scale Output
(1) BFSL method (Best Fit Straight Line): includes combined effects of NonLinearity, Hysteresis and Repeatability.
H <±0.25%FSO (100...1000 bar)
M <±0.5%FSO (35...1000 bar)
0..35 to 0..1000bar
0..500 to 0..15000ps
2 x FSO
>1000 MOhm
Insertion of an offset
DP404 CAN OPEN, with baudra-
te selectable from 10K to 1Mbaud
(default 500Kbaud)
20 ms
2 ms
YES
0…+85°C
<0.02 %FSO/°C
538°C (1000°F)
< 3,5bar/100°C
(< 28 psi/100°F )
IP65
MECHANICAL DIMENSIONS
KD0
D1
D2
D3
D4
D5
A
B
C
KD2
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” ]
KD1
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” ]
KD3
Exposed capillary
D1 1/2-20UNF
.307/.305”
D2
[7.80/7.75mm]
.414/.412”
D3
[10.52/10.46mm]
.125/.120”
A
[3.18/3.05mm]
.318/.312”
B
[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 cables
5-pin connector with 1 meter (3.3 ft) cable PCAV161
5-pin connector with 2 meters (7ft) cable PCAV162
5-pin connector with 5 meters (17 ft) cable PCAV163
Other lengths on request
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
Cable color code
Conn. Wire
1 n.c.
2 Red
3 Black
4 White
5 Blue
Thermocouple for KD2 model
Type “J” (153mm - 6” rigid stem)
TTER 601
ORDER CODE
OUTPUT SIGNAL
CAN BUS D
VERSION
Rigid stem 0
Rigid + flexible stem 1
With thermocouple 2
Exposed capillary 3
CONNECTOR
Standard
5 pin M12 5
ACCURACY CLASS
(ranges ≥100 bar/1500 psi)
0.25% FSO
0.5% FSO M
bar (*) psi (*)
35 B35U 500 P05C
50 B05D 750 P75D
70 B07D 1000 P01M
100 B01C 1500 P15C
200 B02C 3000 P03M
350 B35D 5000 P05M
500 B05C 7500 P75C
700 B07C 10000 P10M
1000 B01M 15000 P15M
(*) Hastelloy diaphragm not avai-
lable for pressure range ≤ 70 bar
(1000 psi)
1/2 - 20 UNF 1
M18 x 1.5 4
H
RANGE
THREAD
Standard
K
000
000= Standard version
Special or customized versions
available on request
CONTACT DIAPHRAGM
INCONEL 718 (538°C*)
I
S 15-5 PH (400°C*)
HASTELLOY C276
H
(300°C*)
(*) max temperature
FLEXIBLE STEM LENGTH (*)
(mm / inches)
Standard (KD0)
0 none
Standard (KD1, KD2)
D 457mm 18”
E 610mm 24”
F 760mm 30”
Standard (KD3)
L 711mm 28”
Available on request
A 76mm 3”
B 152mm 6”
C 300mm 12”
RIGID STEM LENGTH (*)
(mm / inches)
Standard (KD0, KD1, KD2)
4 153mm 6”
5 318mm 12.5”
Standard (KD3)
0 none
Available on request
1 38mm 1.5”
2 50mm 2”
3 76mm 3”
6 350mm 14”
7 400mm 16”
8 456mm 18”
(*) max combined rigid/flexible stem
length is 1000 mm-39”
Examples
KD0-5-M-B07C-1-4-0-I-000
Melt pressure transducer with Can output, 5-pin connector, 1/2-20 UNF threading, pressure range 700 bar, 0.5%accuracy class,
153 mm (6”) rigid stem, Inconel 718 diaphragm.
KD1-5-M-P03M-1-4-D-I-000
Melt pressure transducer with Can output, 5-pin connector, 1/2-20 UNF threading, pressure range 3000 psi, 0.5%accuracy class,
153 mm (6”) rigid stem, 457 mm (18”) flexible stem, Inconel 718 diaphragm.
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 spa reserves the right to make any kind of design or functional modification at any moment without prior notice
DTS_KD_11-2016_ENG
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