PRESSURE TRANSDUCERS WITH AMP.
PA-870/PA-878
INTERNAL STRUCTURE
PA-870/PA-878
1
2
3
4
Part name
5
6
Material
SUS 316
■
FEATURES
High corrosion resistance by Hastelloy
®※
diaphragm
SUS 316 welded stainless steel joint
Built-in amplifier circuit
Voltage or current output mode
1
2
3
4
5
6
Fitting
Stainless steel diaphragm
Sensor chip
Housing
Drip-proof cover
Back cover
Hastelloy
®
C-22
Silicone
SUS 316
Silicone rubber
SUS 303
■
MODEL NUMBER DESIGNATION
PA-870 - 203 P - B R2
Series name
Rated pressure range
PA-870： Voltage output
）
（
PA-878： Current output
）
（
203：0 ~ 2 MPa
353：0 ~ 3.5 MPa
503：0 ~ 5 MPa
Fitting
R2：R 1/4
Drip-proof cover
B：Non-provided
H：Provided
Pressure unit
P：Pa pressure unit
■
LIST OF MODEL NUMBERS
Pressure reference
Output
Drip-proof cover
Voltage output
MPa
Rated pressure range
Gauge
0~2
PA-870-203P-B-R2
PA-870-203P-H-R2
PA-878-203P-B-R2
PA-878-203P-H-R2
0 ~ 3.5
PA-870-353P-B-R2
PA-870-353P-H-R2
PA-878-353P-B-R2
PA-878-353P-H-R2
0~5
PA-870-503P-B-R2
PA-870-503P-H-R2
PA-878-503P-B-R2
PA-878-503P-H-R2
Non-provided
Provided
Non-provided
Current output
Provided
※Verify
the above model numbers when placing orders.
※Hastelloy
®
is a resistered trade name of Haynes International Inc.
PA-870/PA-878
PRESSURE TRANSDUCERS WITH AMP.
■
STANDARD SPECIFICATIONS
●
Unless otherwise specified, the specs are defined at an ambient temperature of 25±5 °C and excitation voltage of 12 V DC.
Item
Pressure reference
Rated pressure range
Maximum pressure
Operating temp. range
Model number
203P
PA-870
353P
503P
203P
PA-878
353P
503P
Gauge
※1
MPa
MPa
°C
°C
%RH
°C
2
4
3.5
7
5
10
−
10 ~ 75
0 ~ 50
35 ~ 85
（
No condensation
）
−
20 ~ 90
（
Atmospheric pressure, humidity 65 %RH maximum
）
Corrosive gases/liquids compatible with SUS 316 and Hastelloy
®
C-22
MΩ
minimum
100 (500 V DC)
350 V AC, 60 s
（
Leakage current 0.5 mA maximum
）
R 1/4
g
Approx. 190
Without drip-proof cover : IP54, With drip-proof cover : IP65
V DC
maximum
DC
10 mA
1~5V
1
±
0.05 V
4
±
0.05 V
%F.S.
ZERO %F.S./°C
±
0.5
±
0.05
±
0.05
10 kΩ minimum
ms
maximum
2
（
At power voltage 24 V
）
2
4
3.5
7
5
10
General specifications
Compensated temp. range
Operating humidity
Storage temp.
Pressure medium
Insulation resistance
Dielectric strength
Pressure port
Net weight
Drip-proof structure
Power
Supply voltage
Consumption current
Output voltage/current
Zero voltage/current
10.8 ~ 26.4
————
4 ~ 20 mA
4
±
0.1 mA
16
±
0.1 mA
Analog output
Span voltage/current
Linearity/Hysteresis
Thermal error
SPAN %F.S./°C
Load resistance
Response
500
Ω
maximum
※ １：
The transducer measures gauge pressure using an absolute pressure sensing element.
PRESSURE TRANSDUCERS WITH AMP.
PA-870/PA-878
■
ENVIRONMENTAL CHARACTERISTICS
Test item
Vibration
Shock
Pressure cycling
Moisture resistance
Test conditions (At 25
±
5 °C)
10 ~ 500 Hz, 1.5 mm maximum/98.1 m/s
2
,
3 directions for 2 hours each
490 m/s
2
3 directions for 3 times each
10
6
cycles
0
∼
Rated pressure
40 °C, 90 ~ 95 %RH, 240 hrs.
Permissible change
Zero voltage/current, Span voltage/current:
±
3 %F.S. maximum each
■
OUTLINE DIMENSIONS
30
17
–0.4
0
Unless otherwise specified, tolerance :
±
0.5
(Unit: mm)
15
(47.5)
6.5
26
Label
Housing
(SUS316)
7
PRESSURE TRANSDUCER
φ
4
Pressure port
R 1/4 (PT 1/4)
(SUS316)
3-core shielded cable (
φ
5.0)
AWG22 UL No.20276 L = 2000 ± 20
Drip-proof cover type
Drip-proof cover
PA-870
Wire color
Red
Black
White
Gray
Connection
Power
B
Common
Output
Shield
PA-878
Wire color
Red
Black
White
Gray
Connection
Power
B
N.C.
Output
Shield
Please make sure that the drip-proof cover is properly
placed over the main body and the cable.
■
INTERNAL ELECTRICAL SCHEMATICS
PA-870
PA-878
Pressure
Sensor
Main circuit
Power
B
Output
Common
Pressure
Sensor
Main circuit
Power
B
Output
Shield
Shield
微控制器 MCU
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