NaK FILLED MELT PRESSURE
TRANSMITTERS
SERIE KE
4...20mA output
The KE 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
• Pressure ranges from:
0-35 to 0-1000 bar / 0-500 to 0-15000 psi
• Accuracy: < ±0.25% FSO (H); < ±0.5% FSO (M)
• Hydraulic transmission system for pressure signal guarantees stability at working temperature (NaK).
Liquid conforming to RoHS Directive.
NaK is defined as a safe substance (GRAS)
• Quantity of NaK contained per model: KE0 series (30mm³)
[0.00183 in³], KE1, KE2, KE3 (40mm³) [0.00244 in³]
• 1/2-20UNF, M18x1.5 standard threads; other types available on request
• Autozero function on board / external option
• Stem drift Autocompensation function (SP version)
• 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 100bar-1500psi up to 400°C (750°F)
• Stem material: 17-4 PH
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.
AUTO-COMPENSATED INFLUENCE OF MELT
TEMPERATURE
Thanks to internal self-compensation, the KSP 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).
The drift values declared in the version with Autocompensation are valid for media temperatures up to 500°C.
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
(tolerance ± 0.25% FSO )
Zero signals adjustment
(tolerance ± 0.25% FSO )
Span adjustment within ± 5% FSO
Maximum allowed load
Electronic response time
(10...90% FSO)
Output noise (RMS 10-400Hz)
Calibration signal
Output short circuit and reverse polarity protection
Compensated temperature range
Operating temperature range
Storage temperature range
Thermal drift in compesated range:
Zero / Calibration / Sensibility
H <±0.25%FSO (100...1000 bar)
M <±0.5%FSO (35...1000 bar)
Infinite
0..35 a 0..1000bar
0..500 a 0..15000psi
2 x FSO
1.5 x FSO over 700bar/10000psi
Extensimetric
10..30Vdc
32mA
>1000 MOhm
20mA
4mA
“Autozero” function
See Melt Manual
See chart
~ 1ms
< 0.025% FSO
80% FSO
YES
0...+85°C
-30...+105°C
-40...+125°C
< 0.02% FSO/°C
Diaphragm maximum temperature
Zero drift (zero)
538°C
1000°F
< 3,5bar/100°C /
< 28 psi/100°F
Zero drift temperature for
Autocompensated version (SP) within the temperature range
20°C-500°C inclusive the drift temperature of the housing
< 0.005 bar/°C 100 ≤ p < 500 bar
0.0022 %FS/°C p ≥ 500 bar
Thermocouple (model KE 2)
STD : tipo “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.
MECHANICAL DIMENSIONS
KE0
KE1
KE2
D1
D2
D3
D4
D5
A
B
C
Ch
[Hex]
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” ]
16
[ 5/8” ]
D1
D2
D3
D4
D5
A
B
C
Ch
[Hex]
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” ]
KE3
Exposed capillary
D1 1/2-20UNF
D2
D3
.307/.305”
[7.80/7.75mm]
.414/.412”
[10.52/10.46mm]
A
B
C
.125/.120”
[3.18/3.05mm]
.318/.312”
[8.08/7.92mm]
.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
CURRENT OUTPUT (4...20mA, 2 wires)
LOAD DIAGRAM
CONTROLLER
AMPL./CONV.
Supply
(10...30Vdc)
Signal
(4...20mA)
Calibration shunt
+ n.c.
n.c.
n.c.
MAGNETIC
AUTOZERO
6-pin 8-pin
A
C
B
B
A
D
D C
E - F E - F
G - H
Supply
(10...30Vdc)
Signal
(4...20mA)
Autozero
+ n.c.
n.c.
n.c.
-
EXTERNAL
AUTOZERO
6-pin 8-pin
A
C
B
B
A
D
D C
E - F E - F
G - H
Connect the cable sheathing to the side of the instrument
AUTOZERO FUNCTION
6-pin connector
VPT07RA10-6PT2
(PT02A-10-6P)
42 [1.65"]
The Autozero function is activated through a magnetic contact (external magnet supplied with the sensor).
See the manual for a complete Autozero function explanation.
8-pin connector
PC02E-12-8P Bendix
POWER SUPPLY VOLTAGE
The diagram shows the optimum ratio between load and power supply for transmitters with 4…20mA output.
For correct function, use a combination of load resistance and voltage that falls within the shaded area.
ACCESSORIES
Connectors
6-pin female connector (IP65 protection degree)
8-pin female connector
Extension cables
6-pin connector with 8m (25 ft) cable
6-pin connector with 15m(50 ft) cable
6-pin connector with 25m (75 ft) cable
6-pin connector with 30m (100 ft) cable
8-pin connector with 8m (25 ft) cable
8-pin connector with 15m (50 ft) cable
8-pin connector with 25m (75 ft) cable
8-pin connector with 30m (100 ft) cable
Other lengths
Accessories
Mounting bracket
Dummy plug for 1/2-20 UNF
Dummy plug for M18x1,5
Drill kit for 1/2 -20 UNF
Drill kit for M18 x 1,5
Cleaning kit for 1/2-20 UNF
Cleaning kit for M18x1,5
Fixing pen clip
Autozero pen
Thermocouple for KE2 model Type “J”
Type “J” (153mm - 6” rigid stem)
CON300
CON307
C08WLS
C15WLS
C25WLS
C30WLS
E08WLS
E15WLS
E25WLS
E30WLS on request
SF18
SC12
SC18
KF12
KF18
CT12
CT18
PKIT309
PKIT312
TTER 601
Cable color code
6 wires
Conn.
Wire
A Red
B
C
Black
White
D
E
F
Green
Blue
Orange F
G
D
E
H
Codice colore cavo 8 wires
Conn.
Wire
A White
B
C
Red
Green
Black
Blue
Orange n.c.
n.c.
ORDER CODE
K 000
Autocompensation (*) SP
Standard -
(*) available for ranges > to 100bar
(*) not available for version KE3
000= Standard version
Special or customized versions available on request
OUTPUT SIGNAL
4...20 mA E
E External autozero
Magnetic autozero
VERSION
Rigid stem 0
Rigid + flexible stem 1
With thermocouple
Exposed capillary
2
3
CONTACT DIAPHRAGM
I INCONEL 718 (538°C*)
S 15-5 PH (400°C*)
H
HASTELLOY C276
(300°C*)
(*) max temperature
CONNECTOR
Standard
6 pin
8 pin
6
8
ACCURACY CLASS
0.25% FSO
(ranges ≥100 bar/1500 psi)
H
0.5% FSO M
FLEXIBLE STEM LENGTH (*)
(mm / inches)
Standard (KE0)
0 none
Standard (KE1, KE2)
D 457mm
E 610mm
F 760mm
Standard (K33)
18”
24”
30”
L 711mm
Available on request
A 76mm
B 152mm
C 300mm
28”
3”
6”
12” bar (*)
35
50
RANGE psi (*)
B35U 500 P05C
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 available for pressure range ≤ 70 bar
(1000 psi)
RIGID STEM LENGTH (*) (mm
/ inches)
Standard (KE0, KE1, KE2)
4
5
153mm
318mm
Standard (KE3)
0 none
Available on request
6”
12.5”
1 38mm
2 50mm
3 76mm
6 350mm
1.5”
2”
3”
14”
7 400mm
8 456mm
16”
18”
(*) max combined rigid/flexible stem length is 1000mm - 39”
THREAD
Standard
1/2 - 20 UNF 1
M18 x 1.5 4
Examples
KE2-6-M-B07C-1-4-D-I-000
Melt pressure transducer with type “J” thermocouple,4...20mA output, 6-pin connector, 1/2-20UNF thread, 00 bar pressure range, 0.5% accuracy class, 153 mm (6”) rigid stem, 457mm (18”) flexible stem, Inconel 718 diaphragm.
KSPE0-6-M-P03M-1-4-0-I-000
Melt pressure transducer autocompensated version, rigid stem,
4...20mA output, 6-pin connector, f/2-20UNF thread, 3000 psi pressure range, 0.5% accuracy class, 153 mm (6”) rigid 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
GEFRAN spa via Sebina, 74
25050 PROVAGLIO D’ISEO (BS) - ITALIA tel. 0309888.1 - fax. 0309839063
Internet: http://www.gefran.com
DTS_KE_11-2016_ENG
