Low Cost, Stainless
Steel Isolated
Pressure Sensors
APPLICATIONS
19C & 19U
Industrial Controls
Process Control Systems
19 Vacuum Gauge
Industrial Automation and
Flow Control
Pressure Calibrators
FEATURES
19C, 19U & 19 Vacuum Gauge
Low Cost
Isolated
Rugged--Stainless Steel
Package
Small Size
Reliable Semiconductor
Technology
19C
Calibrated and
Temperature Compensated
Absolute and Gauge
19U
0 to 3 psi to 0 to 500 psi
The SenSym ICT stainless steel 19C, 19U and 19
Vacuum Gauge Series devices are designed for
pressure applications that involve measurement
of hostile media in harsh environments compatible
with 316 stainless steel. The special Vacuum Gauge
Series devices are specifically designed for
applications that can be exposed to vacuum.
The 19C Series sensors are calibrated and
temperature compensated. They are available for
use with either a constant voltage or current
source. They feature a variety of pressure
connections to allow use in a wide range of OEM
equipment. The 19U Series sensor is
uncompensated for applications that use their own
specialized circuit designs.
The 19C and 19U Series devices are rugged and
reliable transducers for use in a wide variety of
pressure sensing applications where corrosive
liquids or gases are monitored. Contact your local
SenSym ICT representative, the factory, or go to
Sensym ICT’s Web site at www.sensym-ict.com for
additional details.
Absolute and Gauge
Pressures
19 Vacuum Gauge
Vacuum Compatible
Isolated Sensors
EQUIVALENT
BASIC CIRCUIT
19C, 19U & 19 Vacuum Gauge
+IN
+OUT
-OUT
-IN
LOW COST, STAINLESS STEEL ISOLATED PRESSURE SENSORS
SenSym ICT
19C, 19U & 19 Vacuum Gauge Series
LOW COST, STAINLESS STEEL ISOLATED PRESSURE SENSORS
SenSym ICT
19C, 19U & 19 Vacuum Gauge Series
PRESSURE SENSOR CHARACTERISTICS (all devices)
Environmental Specifications (all devices)
Temperature Ranges
Compensated: 0°C to +82°C
Operating:
-40°C to +125°C
Storage:
-40°C to +125°C
Vibration:
Shock:
Life:
Insulation
10G at 20-2000 Hz
100G for 11 msec
1 Million cycles minimum
Resistance: 100MΩ at 50 Vdc
Maximum Ratings (all devices)
Voltage Version “K” : Supply Voltage VS = +15 Vdc
Current Version “L” : Supply Current IS = +2.0 mA
PRESSURE RANGE SPECIFICATIONS (19C, 19U)
SenSym ICT Part No.
Pressure
Range
Proof
Pressure(7)
Burst
Pressure(8)
19(C,U) 003P G (1…9) (K,L)
0-3 psig
9 psig
15 psig
19(C,U) 005P G (1...9) (K,L)
0-5 psig
15 psig
25 psig
19(C,U) 010P G (1...9) (K,L)
0-10 psig
30 psig
50 psig
19(C,U) 015P (A,G,V) (1...9) (K,L)
0-15 psi
45 psi
75 psi
19(C,U) 030P (A,G,V) (1...9) (K,L)
0-30 psi
90 psi
150 psi
19(C,U) 050P (A,G,V) (1...9) (K,L)
0-50 psi
150 psi
250 psi
19(C,U) 100P (A,G,V) (1...9) (K,L)
0-100 psi
300 psi
500 psi
19(C,U) 200P (A,G,V) (1...9) (K,L)
0-200 psi
600 psi
1000 psi
19(C,U) 300P (A,G,V) (1...9) (K,L)
0-300 psi
900 psi
1500 psi
19(C,U) 500P (A,G,V) (1...9) (K,L)
0-500 psi
1200 psi
2400 psi
19C SERIES PERFORMANCE CHARACTERISTICS(1)
Characteristic
Min
Typical
Max
Units
-2
0
+2
mV
Full Scale Span
98
100
102
mV
Full Scale Span (3 and 5 psi “K” units only)(2)
48
50
52
mV
Zero Pressure Offset
(2)
(3)
–
±0.1
±0.25
%FSS
Pressure Hysteresis(3)
–
±0.015
±0.030
%FSS
Repeatability
–
±0.010
±0.030
%FSS
Temp. Effect on Span(4)
–
±0.5
±1.0
%FSS
–
±0.5
±1.0
%FSS
–
–
±2.0
%FSS
Pressure Non-Linearity
Temp. Effect on Offset
(4)
Temp. Effect on Span (0-3 and 0-5 psi only)(4)
(4)
Temp. Effect on Offset (0-3 and 0-5 psi only)
–
–
±2.0
%FSS
Thermal Hysteresis (0 to 82°C)
–
±0.1
±0.3
%FSS
Long Term Stability of Offset & Span(5)
–
±0.1
±0.3
%FSS
Response Time(6)
–
0.1
–
ms
(9)
Common Mode Voltage (Voltage Version “K”)
0.5
1.3
2.0
Vdc
Input Resistance (Current Version “L”)
2.0
4.5
8.0
kΩ
Input Resistance (Voltage Version “K”)
8.0
25
50
kΩ
Output Resistance
3.0
4.5
6.0
kΩ
19C, 19U & 19 Vacuum Gauge Series
19U SERIES PERFORMANCE CHARACTERISTICS(1)
19 SERIES
SPECIFICATION NOTES
Note 1: Reference Conditions
(unless otherwise noted):
TA=25°C
19C: Supply
VS=10Vdc±0.01Vdc or
IS=1.5mA±0.0015mA
19U: Supply
VS=5Vdc±0.01Vdc or
I=1.0mA±0.0015mA
Note 2: Full-Scale Span is the algebraic
difference between the output
voltage at full scale pressure and
the output at zero pressure. FullScale Span (FSS) is ratiometric to
the supply voltage.
Note 3: Pressure Non-Linearity is based on
best-fit straight line from the zero
to the full-scale pressure. Pressure
Hysteresis is the maximum output
difference at any point within the
operating pressure range for
increasing and decreasing pressure.
Note 4: Maximum error band of the offset
voltage or span over the
compensated temperature range,
relative to the 25°C reading.
Note 5: Long term stability over a six
month period.
Note 6: Response time for a 0 psi to FSS
pressure step change, 10% to 90%
rise time.
Note 7: The maximum pressure that can
be applied without changing the
transducer’s performance or
accuracy.
Note 8: The maximum pressure that can
be applied to a transducer without
rupture of either the sensing
element or transducer case.
Note 9: Common Mode Voltage as
measured from output to ground.
For higher levels of Common
Mode Voltage, contact factory.
Note 10: The error band resulting from
maximum deviation of a
transducers output parameter
(offset, span, or resistance) as
temperature is varied from 25°C to
any other temperature within the
specified range (0 to 82°C). This
parameter is not 100% tested and
is guaranteed by process design
and tested on a sample basis only.
Temperature coefficient of span is
evaluated using a constant current
source.
Characteristic
Min
Typical
Max
Units
Zero Pressure Offset
Full-Scale Span(2)
Full-Scale Span (3 and 5 psi only)(2)
Pressure Non-Linearity(3)
Pressure Hysteresis(3)
Repeatability
Temp. Coefficient of Resistance(10) (0 to 82°C)
Temp. Coefficient of Offset(10) (0 to 82°C)
Temp. Coefficient of Span(10) (0 to 82°C)
Thermal Hysteresis (0 to 82°C)
Long Term Stability of Offset & Span(5)
Response Time(6)
Input Resistance
Output Resistance
-7.5
35
20
–
–
–
2700
–
360
–
–
–
4.00
4.00
1.0
40
30
±0.1
±0.015
±0.010
3420
30
720
±0.1
±0.1
±0.1
4.75
4.75
+7.5
60
40
±0.25
±0.030
±0.030
4500
–
1260
±0.3
±0.3
–
6.0
6.0
mV/V
mV/V
mV/V
%FSS
%FSS
%FSS
ppm/°C
µV/V/°C
ppm/°C
%FSS
%FSS
ms
kΩ
kΩ
19C VACUUM GAUGE COMPENSATED SERIES
PERFORMANCE CHARACTERISTICS(1)
Characteristic
Min
Typical
Max
Units
Zero Pressure Offset (@0 psig)
Full-Scale Span(2) (0 psig to Positive Full-Scale)
Pressure Non-Linearity(3)
Pressure Hysteresis(3)
Repeatability
Temp. Effect on Span(4)
Temp. Effect on Offset(4)
Thermal Hysteresis (0 to 82°C)
Long Term Stability of Offset & Span(5)
Response Time(6)
Common Mode Voltage (Voltage Version “K”)(9)
Input Resistance (Current Version “L”)
Input Resistance (Voltage Version “K”)
Output Resistance
-2
98
–
–
–
–
–
–
–
–
0.5
1.5
8.0
3.0
0
100
±0.1
±0.015
±0.010
±0.5
±0.5
±0.1
±0.1
0.1
1.3
4.5
25
4.5
+2
102
±0.25
±0.030
±0.030
±1.0
±1.0
±0.3
±0.3
–
2.0
8.0
50
6.0
mV
mV
%FSS
%FSS
%FSS
%FSS
%FSS
%FSS
%FSS
ms
Vdc
kΩ
kΩ
kΩ
19U VACUUM GAUGE UNCOMPENSATED SERIES
PERFORMANCE CHARACTERISTICS(1)
Characteristic
Min
Typical
Max
Units
Zero Pressure Offset
Full-Scale Span(2) (0 psig to Positive Full-Scale)
Pressure Non-Linearity(3)
Pressure Hysteresis(3)
Repeatability
Temp. Coefficient of Resistance(10) (0 to 82°C)
Temp. Coefficient of Offset(10) (0 to 82°C)
Temp. Coefficient of Span(10) (0 to 82°C)
Thermal Hysteresis (0 to 82°C)
Long Term Stability of Offset & Span(5)
Response Time(6)
Input Resistance
Output Resistance
-7.5
35
–
–
–
2700
–
360
–
–
–
4.00
4.00
1.0
40
±0.1
±0.015
±0.010
3420
30
720
±0.1
±0.1
±0.1
4.75
4.75
+7.5
60
±0.25
±0.030
±0.030
4500
–
1260
±0.3
±0.3
–
6.0
6.0
mV/V
mV/V
%FSS
%FSS
%FSS
ppm/°C
µV/V/°C
ppm/°C
%FSS
%FSS
ms
kΩ
kΩ
(See Note)
.575 (14.61)
.420 (10.67)
.325 (8.26)
Dimensions in inches (mm)
CELL PACKAGE 1
2.0 (50) NOMEX INSULATED
RIBBON CABLE
W/.100 (2.54) PIN SPACING
(24 AWG EQUIV.)
VENT HOLE
(GAUGE UNITS ONLY)
.000
PHYSICAL DIMENSIONS
Ø.594 (15.09)
RING I.D.
-OUT
+OUT
Ø.736 (18.69)
Ø.650 (16.51)
O-RING GROOVE
Ø.746
(18.95)
A
-IN
1
+IN
4X .125 (3.2)
CERAMIC SHOWN
(COMP. UNITS ONLY)
TIG WELD
LOCATION
GROOVE FOR
AS568-016 O-RING
Ø.668 (16.98)
CKT CAVITY
PACKAGE 2
FLUSH MOUNT
2.0 (50) NOMEX INSULATED
STRIP CABLE
W/.100 (2.54) PIN SPACING
(24 AWG EQUIV.)
VENT HOLE
(GAUGE UNITS ONLY)
.375 (9.53)
.220 (5.59)
.125 (3.18)
.040 (1.02)
.000
Note: Non-concentricity effects at the diaphragm weld area may cause runout of up to ±0.006” between the upper and lower portions of
the sensor body. (It is recommended to use a counter bore in the mating bore with this device to allow for this non-concentricity.)
-OUT
+OUT
Ø.736 (18.69)
WELD RELIEF
Ø.650 (16.51)
O-RING GROOVE
Ø.746
(18.95)
A
-IN
1
+IN
4X .125 (3.2)
CERAMIC SHOWN
(COMP. UNITS ONLY)
EXPOSED
DIAPHRAGM
Ø.668 (16.98)
CKT CAVITY
VENT HOLE
(GAUGE UNITS ONLY)
Ø.870
(22.1)
.365 (9.27)
.290 (7.37)
.220 (5.59)
.125(3.18)
.000
PACKAGE 3
FLUSH MOUNT
WITH FLANGE
GROOVE FOR
AS568-016 O-RING
2.0 (50) NOMEX INSULATED
RIBBON CABLE
W/.100 (2.54) PIN SPACING
(24 AWG EQUIV.)
-OUT
+OUT
Ø.736 (18.69)
WELD RELIEF
Ø.650 (16.51)
O-RING GROOVE
Ø.746
(18.95)
A
-IN
1
+IN
4X .125 (3.2)
EXPOSED
DIAPHRAGM
Ø.668 (16.98)
CKT CAVITY
.000
2.0 (50) NOMEX INSULATED
STRIP CABLE
W/.100 (2.54) PIN SPACING
(24 AWG EQUIV.)
VENT HOLE
(GAUGE UNITS ONLY)
.450 (11.43)
.39 (9.9)
1.22 (30)
PACKAGE 4
MALE 1/8-27 NPT
GROOVE FOR
AS568-016 O-RING
.700 (17.78)
CERAMIC SHOWN
(COMP. UNITS ONLY)
.75 (19)
HEX
-OUT
+OUT
Ø.746
(18.95)
A
-IN
1
+IN
4X .125 (3.2)
1/8-27 NPT
Ø.668 (16.98)
CKT CAVITY
.740 (18.8)
.490 (12.45)
.44 (11.2)
2.0 (50) NOMEX INSULATED
STRIP CABLE
W/.100 ( 2.54) PIN SPACING
(24 AWG EQUIV.)
VENT HOLE
(GAUGE UNITS ONLY)
1.23 (31.8)
PACKAGE 5
MALE 1/4-18 NPT
TIG WELD
LOCATION
.000
CERAMIC SHOWN
(COMP. UNITS ONLY)
Ø.171 (4.34)
.75 (19)
HEX
-OUT
+OUT
-IN
Ø.746
(18.95)
A
Ø.540
(13.72)
1
+IN
CERAMIC SHOWN
(COMP. UNITS ONLY)
4X .125 (3.2)
Ø.668 (16.98)
CKT CAVITY
1/4-18 NPT
TIG WELD
LOCATION
Ø.171 (4.34)
LOW COST, STAINLESS STEEL ISOLATED PRESSURE SENSORS
SenSym ICT
19C, 19U & 19 Vacuum Gauge Series
19C, 19U & 19 Vacuum Gauge Series
PHYSICAL DIMENSIONS (con’t)
.000
2.0 (50) NOMEX INSULATED
STRIP CABLE
W/.100 (2.54) PIN SPACING
(24 AWG EQUIV.)
VENT HOLE
(GAUGE UNITS ONLY)
.600 (15.24)
1.12 (28.4)
PACKAGE 6
MALE 7/16 UNF
.350 (8.89)
.28 (7.1)
Dimensions in inches (mm)
.75 (19)
HEX
-OUT
+OUT
Ø.746
(18.95)
A
-IN
1
+IN
4X .125 (3.2)
2.0 (50) NOMEX INSULATED
STRIP CABLE
W/.100 (2.54) PIN SPACING
(24 AWG EQUIV.)
.34 (8.6)
1.24 (31.4)
PACKAGE 7
MALE 1/4 BSPP
VENT HOLE
(GAUGE UNITS ONLY)
7/16-20 UNF-2A
GLAND PER MS33656
(3-904 O-RING SEAL)
TIG WELD
LOCATION
.000
Ø.668 (16.98)
CKT CAVITY
.722 (18.34)
.472 (11.99)
.412 (10.46)
CERAMIC SHOWN
(COMP. UNITS ONLY)
Ø.171 (4.34)
.75 (19)
HEX
-OUT
+OUT
Ø.746
(18.95)
A
-IN
1
Ø.438
(11.13) Ø.720
(18.29)
+IN
4X .125 (3.2)
Ø.668 (16.98)
CKT CAVITY
TIG WELD
LOCATION
.585 (14.86)
.430 (10.92)
.335 (8.51)
.103 (2.62)
.052 (1.32)
PACKAGE 8 (See Note)
EURO RING
2.0 (50) NOMEX INSULATED
STRIP CABLE
W/.100 (2.54) PIN SPACING
(24 AWG EQUIV.)
VENT HOLE
(GAUGE UNITS ONLY)
1/4-19 BSPP
Ø.171 (4.34)
.000
CERAMIC SHOWN
(COMP. UNITS ONLY)
Ø.594 (15.09)
RING I.D.
-OUT
+OUT
A
-IN
1
Ø.746
(18.95)
Ø.650
(16.51)
Ø.746
(18.95)
Ø.681
(17.3)
+IN
4X .125 (3.2)
CERAMIC SHOWN
(COMP. UNITS ONLY)
Ø.668 (16.98)
CKT CAVITY
TIG WELD
LOCATION
GROOVE FOR
AS568-016 O-RING
.000 FROM
GLAND END
2.0 (50) NOMEX INSULATED
RIBBON CABLE
W/.100 (2.54) PIN SPACING
(24 AWG EQUIV.)
VENT HOLE
(GAUGE UNITS ONLY)
.350 (8.9)
PACKAGE 9
VCR GLAND (Female Nut)
1.095 (27.8)
Note: Non-concentricity effects at the diaphragm weld area may cause runout of up to ±0.006” between the upper and lower portions of the sensor
body. (It is recommended to use a counter bore in the mating bore with this device to allow for this non-concentricity.)
-OUT
+OUT
-IN
Ø.746
(18.95)
A
1
+IN
CERAMIC SHOWN
(COMP. UNITS ONLY)
4X .125 (3.2)
Ø.668 (16.98)
CKT CAVITY
TIG WELD
LOCATION
1/4 O.D. VCR GLAND
WITH 3/4 (19) HEX FEMALE
NUT
LOW COST, STAINLESS STEEL ISOLATED PRESSURE SENSORS
SenSym ICT
19C, 19U & 19 Vacuum Gauge Series
Low Cost, Stainless Steel Isolated
Pressure Sensors
ORDERING INFORMATION - PART # DESCRIPTION
19C Series
19
C XXXP
A,G 1,2...9
K,L
K = 10 Vdc Excitation
L = 1.5 mA Excitation
19mm cell
Pressure Connections:
1 = Cell w/Body O-Ring
2 = Flush Mount
3 = Flush Mount w/ Flange
4 = 1/8-27 NPT
5 = 1/4-18 NPT
6 = 7/16 UNF
7 = 1/4 BSPP
8 = Euro O-Ring
9 = 1/4 VCR (Female Nut)
C = Compensated
Pressure Range
in (P) PSI
A = Absolute Pressure
G = Gauge Pressure
For example:
Part #19C100PA4K =
19 mm Cell,
Compensated, 100 psi,
Absolute, 1/8NPT Port
with 10 Vdc excitation.
19U Series
19
U XXXP
A,G 1,2...9
K
5 Vdc Excitation
or 1.0 mA Excitation
19mm cell
Pressure Connections:
1 = Cell w/Body O-Ring
2 = Flush Mount
3 = Flush Mount w/ Flange
4 = 1/8-27 NPT
5 = 1/4-18 NPT
6 = 7/16 UNF
7 = 1/4 BSPP
8 = Euro O-Ring
9 = 1/4 VCR (Female Nut)
U = Uncompensated
Pressure Range
in (P) PSI
A = Absolute Pressure
G = Gauge Pressure
For example:
Part #19U100PA4K =
19 mm Cell,
Uncompensated, 100
psi, Absolute, 1/8NPT
Port with 5 Vdc
excitation.
19 Vacuum Gauge Series
19 C,U XXXP
V 1,2...9
K,L
K = Voltage Excitation
L = Current Excitation
19mm cell
Pressure Connections:
1 = Cell w/Body O-Ring
2 = Flush Mount
3 = Flush Mount w/ Flange
4 = 1/8-27 NPT
5 = 1/4-18 NPT
6 = 7/16 UNF
7 = 1/4 BSPP
8 = Euro O-Ring
9 = 1/4 VCR (Female Nut)
C = Compensated
U = Uncompensated
Pressure Range
in (P) PSI
V = Vacuum Gauge
Pressure
For example: Part
#19C100PV4K = 19
mm Cell, Comp., 100
psi, Vacuum Gauge,
1/8NPT Port with 10
Vdc excitation.
For example: Part
#19U100PV4K = 19
mm Cell,
Uncompensated, 100
psi, Absolute, 1/8NPT
Port with 5 Vdc
excitation.
SenSym ICT
1804 McCarthy Boulevard
Milpitas, CA 95035
GENERAL DISCLAIMER: Invensys Sensor Systems reserves the right to make changes to its products and
their specifications at any time, without prior notice to anyone. Invensys Sensor Systems has made every
effort to ensure accuracy of the information contained herein but can assume no responsibility for
inadvertent errors, omissions, or subsequent changes. Invensys Sensor Systems does not assume any
responsibility for the use of any circuit or other information described within this document, and further,
makes no representations of ay kind that the circuit and information described herein is free of infringement
of any intellectual property right or any other right of third parties. No express or implied licenses of any
Invensys Sensor Systems intellectual property right is granted by implication or otherwise.
www.sensym-ict.com
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