NaK FILLED MELT PRESSURE TRANDUCERS
K3 SERIES mV/V output
The K3 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 guaran tees stability at working temperature (NaK).
Liquid conforming to RoHS Directive.
NaK is defined as a safe substance (GRAS
• Quantity of NaK contained per model:
K30 series (30mm³) [0.00183 in³], K31-K32-K33 series
(40mm³) [0.00244 in³]
• 1/2-20UNF, M18x1.5 standard threads; other types
available 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 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
TECHNICAL SPECIFICATIONS
Accuracy (1)
Resolution Infinite
Measurement range
Maximum overpressure
Measurement principle Strain gauge
Power supply 6..12Vdc (10Vdc typical)
Bridge resistance
Insulation resistance
(at 50Vdc)
Output signal Full Scale FSO
(tolerance ± 0;5% FSO)
Zero balance ±5%
Calibration signal 80% FSO
Compensated temperature
range
Maximum temperature range
Thermal drift in compesated
range: Zero / Calibration /
Sensibility
Diaphragm maximum
temperature
Zero drift due to change in
process temperature)
Thermocouple (model K32)
Protection degree
(with 6-pole female connector)
Electrical connections
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 a 0..1000bar
0..500 a 0..15000psi
2 x FSO
1.5 x FSO over 700bar/10000psi
350 Ohm
(550 Ohm below
100bar - 1500psi)
>1000 MOhm
2.5 mV/V (option 2)
3.33 mV/V (option 3)
0...+100°C
32...212°F
-30...+120°C
-22...250°F
< 0.02% FSO/°C
< 0.01% FSO/°F
538°C
1000°F
< 3,5 bar/100°C
< 28 psi/100°F
STD : type “J”
(isolated junction)
IP65
Conn. 6-pin VPT07RA10-6PT
(PT02A-10-6P)
Conn.8-pin PC02E-12-8P
MECHANICAL DIMENSIONS
K30
D1
D2
D3
D4
D5
A
B
C
K32
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” ]
K31
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” ]
K33
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
mV/V OUTPUT
R-Cal
Supply Voltage
Supply Voltage
Signal
Signal
Calibration shunt
6-pin 8-pin
+
-
-
+
C
D
B
A
E - F
n.c.
Connect the cable sheathing
to the side of the instrument.
A
C
D
B
E - F
G - H
6-pin connector
VPT07RA10-6PT2
(PT02A-10-6P)
ACCESSORIES
Connectors
6-pin female connector (IP65 protection degree) CON300
8-pin female connector CON307
Extension cables
6-pin connector with 8m (25ft) cable C08W
6-pin connector with 15m (50ft) cable C15W
6-pin connector with 25m (75ft) cable C25W
6-pin connector with 30m (100ft) cable C30W
8-pin connector with 8m (25ft) cable E08W
8-pin connector with 15m (50ft) cable E15W
8-pin connector with 25m (75ft) cable E25W
8-pin connector with 30m (100ft) cable E30W
Other lengths on request
8-pin connector
PC02E-12-8P Bendix
Cable color code
6 wires
Conn. Wire
A Red
Black
B
C White
D Green
E Blue
F Orange
Codice colore
cavo 8 wires
Conn. Wire
A White
B Red
C Green
D Black
E Blue
F Orange
G n.c.
H n.c.
Accessories
Mounting bracket SF18
Dummy plug for 1/2-20 UNF SC12
Dummy plug for M18x1,5 SC18
Drill kit for 1/2 -20 UNF KF12
Drill kit for M18 x 1,5 KF18
Cleaning kit for 1/2-20 UNF CT12
Cleaning kit for M18x1,5 CT18
Thermocouple for K32 model
Type “J” (153mm - 6” rigid stem)
TTER 601
ORDER CODE
OUTPUT SIGNAL
2.5 mV/V 2
3.33 mV/V 3
VERSION
Rigid stem 0
Rigid + flexible stem 1
With thermocouple 2
Exposed capillary 3
CONNECTOR
Standard
6 pin 6
8 pin 8
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 (K30)
0 none
Standard (K31, K32)
D 457mm 18”
E 610mm 24”
F 760mm 30”
Standard (K33)
L 711mm 28”
Available on request
A 76mm 3”
B 152mm 6”
C 300mm 12”
RIGID STEM LENGTH (*)
(mm / inches)
Standard (K30, K31, K32)
4 153mm 6”
5 318mm 12.5”
Standard (K33)
0 none
Available on request
1 38mm 1.5”
2 50mm 2”
3 76mm 3”
6 350mm 14”
7 400mm 16”
8 456mm 18”
(*) combined rigid/flexible stem
length is 1000mm - 39”
Examples
K32-6-M-B07C-1-4-D-I-000
Melt pressure transducer with type “J” thermocouple, 3,33 mV/V output, 6-pin connector, 1/2-20UNF thread, 700 bar pressure range,
0.5% accuracy class, 153 mm (6”) rigid stem, 457mm (18”) flexible stem, Inconel 718 diaphragm.
K20-8-M-P03M-1-4-0-I-000
Melt pressure transducer, rigid stem, 2,5 mV/V output, 6-pin connector, 1/2-20UNF thread, 3000 psi pressure range, 0.5% accuracy
class, 153 mm (6”) rigid stem (6”), 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_K3_11-2016_ENG
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