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The pressure transmitter 2012/3 is suitable to measure liquid, gas, or steam flow as well as liquid level, density and pressure. 2012/3 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. |
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The gauge/absolute pressure transmitter includes two functional units: —Main unit —Auxiliary Unit The main unit includes a sensor and process connection. The completely welded sensor module is a twin-chamber system with an integral overload diaphragm, a temperature sensor and the silicon gauge/absolute pressure sensor. The temperature sensor as a temperature compensated reference value to compensate for the temperature drift. |
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Standard·Specifications
HUAHAI instruments|Strive for excellence Committed to provide solution for field instruments
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Reference Accuracy of Calibrated Span (includes terminal-based linearity, hysteresis, and repeatability) |
± 0.075%; |
If TD>10 (TD=URL/SPAN): ±(0.0075×TD)%; |
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Ambient Temperature Effects |
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Span Code |
-20℃~65℃ |
B/L |
±(0.30×TD+0.20)%×Span |
Others |
±(0.20×TD+0.10)%×Span |
Span Code |
-40℃~-20℃和 65℃~85℃ |
B/L |
±(0.30×TD+0.20)%×Span |
Others |
±(0.20×TD+0.10)%×Span |
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Span Code |
Stability |
B/L |
±0.2%×Span/1year |
Others |
±0.1%×Span/1year |
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Span and Range Limits(Gauge Pressure) |
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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 |
E |
Span |
20~2000 |
0.2~20 |
Range Limits |
-100~2000 |
-1~20 |
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 |
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Span and Range Limits(Absolute Pressure) |
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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 |
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External zero is continuously adjustable with 0.01% incremental resolution of span. Re-range can be done locally using the range setting switch. |
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Mounting Position Effects |
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Rotation in diaphragm plane has no effect. Tilting up to 90 degree will cause zero shift up to 0.4 kPa which can be corrected by the zero adjustment. |
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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 |
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Failure Alarm (the mode can be selected) |
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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. |
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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 |
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Ambient Temperature Limits |
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-20 to 65°C with LCD display or fluorine rubber sealing |
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Storage and Transportation Temperature Limits |
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-50 to 85°C, -40 to 85°C with LCD display |
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Working Pressure Limits (Silicone oil) |
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From vacuum to upper range limits |
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Span |
6kPa (1B) |
40kPa (1C) |
250kPa (1D/1M) |
2(3)MPa (1E/1O) |
OPL |
16MPa |
16MPa |
16MPa |
16MPa |
Span |
10MPa (1G) |
21MPa (1H) |
40MPa (1I) |
OPL |
20MPa |
50MPa |
50MPa |
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Electromagnetic Compatibility (EMC) |
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Look the EMC Performance Table |
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Supply & Load Requirements |
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24 V DC supply, Maximum voltage limited: 42VDC, Minimum voltage limited: 12VDC, 15VDC(with LCD display) 230Ω to 600Ω for digital communication |
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The electrical connection is made via cable entry M20x1.5.The screw terminals are suitable for wire cross-sections up to 2.5mm2. |
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Default Process Connection:Flange with fixing thread 7/16-20 UNF and 1/4-18 NPT female thread on both sides. |
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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 |
3.3kg |
Degrees of Protection |
IP67 |
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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 |
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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. |
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Horizontal Impulse Piping Type(side face) |
Horizontal Impulse Piping Type(front side) |
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Horizontal Impulse Wall mounting Type |
Vertical Impulse Piping Type |
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Note:Quick interface functionally equivalent to the signal terminal |
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Gauge Pressure Transmitter |
Absolute Pressure Transmitter |
10 |
Output |
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H N |
4-20mA with HART 4-20mA |
20 |
Span |
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Gauge Pressure |
1B 1C 1D 1E 1G 1H 1I |
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) 0-20kPa~2MPa /(0-2~200 mH2O)/(0-0.2~20bar) 0-0.1MPa~10MPa /(0-1~100bar) 0-0.21MPa~21MPa /(0-2.1~210 bar) 0-0.4MPa~40MPa /(0-4~400 bar) |
Absolute Pressure |
1L 1M 1O |
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 |
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A C |
316L stainless steel Silicone oil Hastelloy C Silicone oil |
40 |
Process connector accessory |
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N B U D |
7/16-20 UNF and 1/4-18 NPT female thread, No relief valve 7/16-20 UNF and 1/4-18 NPT female thread, Relief valves at end of flange 7/16-20 UNF and 1/4-18 NPT female thread, Relief valves at the upper part of the flange side 7/16-20 UNF and 1/4-18 NPT female thread, Relief valve at the lower part of the flange side |
50 |
Special function |
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N O |
None Degrease cleansing treatment(Oxygen measurement must be with fluorinated oil filled capsule, Viton (FKM) gasket, <6MPa ,<60℃) |
60 |
Mounting bracket |
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N 1 2 |
None 304 stainless steel Carbon steel galvanized |
70 |
Integral indicator |
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N 1 2 |
None LCD display Backlit LCD display |
80 |
Process connector accessory |
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N 1 2 |
None Stainless steel oval-shaped flange with 1/2 NPT female thread Stainless steel D-shaped connector with M20x1.5 male thread |
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