Focp smart monocrystalline silicon gauge pressure transmitter

Focp smart monocrystalline silicon gauge pressure transmitter

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Performance characteristics of monocrystalline silicon pressure transmitter
Committed to provide solution for field instruments

The pressure transmitter Focp is suitable to measure liquid, gas, or steam flow as well as liquid level, density and pressure. Focp outputs a 4 to 20 mA DC signal corresponding to the measured pressure. The key features include quick response, remote set-up using communications, self-diagnostics and optional status output for pressure high/low alarm.
Focp Gauge/Absolute Pressure Transmitter
The gauge/absolute pressure transmitter includes two functional units:
—Main unit
—Auxiliary Unit The main unit includes gauge/absolute/temperature sensors and process connection. The low pressure span completely welded sensor module is a twin-chamber system with an integral overload diaphragm, and a silicon pressure sensor. The temperature sensor as a temperature compensated reference value to compensate for the temperature drift.


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Committed to provide solution for field instruments

Reference Accuracy of Calibrated Span (includes terminal-based linearity, hysteresis, and repeatability)
± 0.075%;
If TD>10 (TD=URL/SPAN): ± (0.0075×TD) %;
Ambient Temperature Effects
Span Code -20℃~65℃
B/L ±(0.30×TD+0.20)%×Span
Others ±(0.20×TD+0.10)%×Span
Span Code -40℃~-20℃ and 65℃~85℃
B/L ±(0.30×TD+0.20)%×Span
Others ±(0.20×TD+0.10)%×Span
Overpressure Effects
Span Code Stability
B/L ±0.2%×Span/1year
Others ±0.1%×Span/1year
Power Supply Effects
±0.001% /10V (12~42V DC)
Span and Range Limits (Gauge Pressure)
Span/Range Limits kPa bar
B Span 0.6~6 6~60mbar
Range Limits -6~6 -60~60mbar
C Span 2~40 0.02~0.4
Range Limits -40~40 -0.4~0.4
D Span 2.5~250 0.025~2.5
Range Limits -100~250 -1~2.5
F Span 30~3000 0.3~30
Range Limits -100~3000 -1~30
G Span 0.1~10MPa 1~100
Range Limits -0.1~10MPa -1~100
H Span 0.21~21 MPa 2.1~210
Range Limits -0.1~21 MPa -1~210
I Span 0.4~40 MPa 4~400
Range Limits -0.1~40 MPa -1~400
J Span 0.6~60 MPa 6~600
Range Limits -0.1~60 MPa -1~600
Span and Range Limits (Absolute Pressure)
Span/Range Limits kPa bar
L Span 2~40 0.02~0.4
Range Limits 0~40 0~0.4
M Span 2.5~250 0.025~2.5
Range Limits 0~250 0~2.5
O Span 30~3000 0.3~30
Range Limits 0~3000 0~30
External Zero Adjustment
External zero is continuously adjustable with 0.01% incremental resolution of span. Re-range can be done locally using the range setting switch.
Mounting Position Effects
Rotation in diaphragm plane has no effect. Tilting up to 90 degree will cause zero shift up to 0.25 kPa which can be corrected by the zero adjustment.
Two wire 4 to 20 mA DC output with digital communications, linear or square root programmable. HART FSK protocol is option superimposed on the 4 to 20 mA signal. Output range: 3.9 mA to 20.5 mA.
Failure Alarm (the mode can be selected)
Low Mode (min): 3.7 mA, High Mode (max): 21 mA
No Mode (hold): Keep the effective value before fault. The standard setting of failure alarm is High Mode.
Response Time
The amplifier damping constant is 0.1 sec; The sensor damping constant is 0.1~1.6 sec, it depends on t he range and range compression ratio. Amplifier damping time constant is adjustable from 0 to 60 sec by software and added to response time.
Up Time < 15s
Ambient Temperature Limits: -40 to 85°C
-20 to 65°C with LCD display or fluorine rubber sealing
Storage and Transportation Temperature Limits
-50 to 85°C, -40 to 85°C with LCD display
Working Pressure Limits (Silicone oil)
From vacuum to upper range limits
Overload Pressure Limits
Span 6kPa(B) 40kPa(C) 250kPa(D/M) 3MPa(F/O)
OPL 0.2MPa 1MPa 4MPa 16MPa
Span 10MPa(G) 21MPa(H) 40MPa(I) 60MPa(J)
OPL 20MPa 50MPa 50MPa 70MPa
Electromagnetic Compatibility (EMC)
Look the EMC Performance Table
Supply & Load Requirements
24 V DC supply Maximum voltage limited: 42VDC, Minimum voltage limited: 12VDC, 15VDC(with LCD display) 230Ω to 600Ω for digital communication
Electrical Connection
The electrical connection is made via cable entry M20x1.5.The screw terminals are suitable for wire cross-sections up to 2.5mm2.
Process Connection
Default Process Connection:1/2-NPT female thread, it can be changed to 1/2-NPT,G1/2,M20x1.5male thread and KF16 vacuum Connection.
Isolating Diaphragm 316L stainless steel/Hastelloy C
Process Connector 316 stainless steel
Fill fluid Silicone oil
Amplifier Housing Aluminum with epoxy resin coat
Housing Gasket Perbunan(NBR)
Name plate and tag 304 stainless steel
Weight 1.6kg
Degrees of Protection IP67
EMC Performance Table
Items Test items Basic standards Test conditions Performance Level
1 Radiated interference (Housing) GB/T 9254-2008 30MHz~1000MHz OK
2 Conducted interference(DC power port) GB/T 9254-2008 0.15MHz~30MHz OK
3 Electrostatic Discharge (ESD) Immunity GB/T 17626.2-2006 4kV(Line) 8kV(Air) B
4 RF electromagnetic field immunity GB/T 17626.3-2006 10V/m (80MHz~1GHz) A
5 Frequency magnetic field immunity GB/T 17626.8-2006 30A/m A
6 Electrical Fast Transient Burst Immunity GB/T 17626.4-2008 2kV(5/50ns,5kHz) B
7 Surge Immunity GB/T 17626.5-2008 1kV(line to line) 2kV(line to ground) (1.2us/50us) B
8 Conducted interference immunity induced by RF field GB/T 17626.6-2008 3V (150KHz~80MHz) A
Note:(1)Performance level A description: The technical specifications within the limits of normal performance.
(2)Performance level B description: Temporary reduction or loss of functionality or performance, it can restore itself. The actual operating conditions, storage, and data will not be changed.
Horizontal Impulse Piping Type(side face) Horizontal Impulse Piping Type(front side)
Horizontal Impulse Wall mounting Type Vertical Impulse Piping Type
Note:Quick interface functionally equivalent to the signal terminal
Default Process Connection(Code 1)
M/D/F/G/H/I/J/O Span B/C/L Span
Other forms of Process connector
1/2-NPT male thread(Code 2) M20x1.5 male thread(Code3)
G 1/2 male thread(Code 4) Vacuum Connection DIN 28403 KF16 / ISO 2861(Code 5)
1/4-NPT male thread(Code 6)
Gauge Pressure Transmitter
Absolute Pressure Transmitter
10 Output
4-20mA with HART
20 Span
  Gauge Pressure
0-0.6kPa~6kPa /(0-60~600 mmH2O)/(0-6~60mbar)
0-2kPa~40kPa /(0-200~4000 mmH2O)/(0-20~400mbar)
0-2.5kPa~250kPa /(0-0.25~25 mH2O)/(0-25~2500mbar)
0-30kPa~3MPa /(0-3~300 mH2O)/(0-0.3~30bar)
0-0.1MPa~10MPa /(0-1~100bar)
0-0.21MPa~21MPa /(0-2.1~210 bar)
0-0.4MPa~40MPa /(0-4~400 bar)
0-0.6MPa~60MPa /(0-6~600 bar)
Absolute Pressure
0-2kPa~40kPa /(0-200~4000 mmH2O)/(0-20~400mbar)
0-2.5kPa~250kPa /(0-25~2500mbar)
0-30kPa~3MPa /(0-0.3~30bar)
30 Diaphragm fill fluid
316L stainless steel Silicone oil
Hastelloy C Silicone oil
40 Process connector accessory
1/2-NPT female thread
1/2-NPT male thread (Containing 1/4-NPT female thread)
M20x1.5 female thread
G 1/2 female thread
Vacuum Connection DIN 28403 KF16 / ISO 2861
1/4-NPT male thread
50 Special function
Degrease cleansing treatment(Oxygen measurement must be with fluorinated oil filled capsule, Viton (FKM) gasket, <6MPa ,<60℃)
60 Mounting bracket
304 stainless steel
Carbon steel galvanized
70 Integral indicator
LCD display
Backlit LCD display


Note:Vacuum Connection DIN 28403 KF16 / ISO 2861, applies only to the range of less than 2.5 bar;

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