- Measurement Range:0-6kPa .... 0-40MPa
- Accuracy:± 0.1%, ± 0.2%, ± 0.075%
- Output:4~20mA, 4~20mA+HART, MODBUS RS485
- Protection Level:IP65/IP67
- Explosion -Proof:NEPSI EXDB IIC T6 GB


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With throttling device can detect the flow of liquid, gas, steam;
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It can directly detect differential pressure, gauge pressure, absolute pressure, and liquid level in open or closed containers;
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Convert the measured pressure signal into 4-20mADC signal and supply it to PLC and secondary instrumentation;
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Using digital compensation technology to compensate for temperature and static pressure, which improves the measurement accuracy;
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High measurement accuracy up to ± 0.1% FS, special can be customized ± 0.075% FS.
DP transmitters can be used with a throttling device to measure the flow of liquids, gases and vapors, as well as directly to measure differential pressure, gauge pressure, absolute pressure and the level of liquids in open or closed vessels. It can realize the measurement from micro differential pressure to large differential pressure, from low pressure to high pressure, absolute pressure and high static pressure, and convert the measured pressure signal into standard 4-20mA DC signal output. Now it is widely used in petroleum, chemical, metallurgy, electric power, papermaking, medicine, textile, environmental protection and other industries, such as differential pressure, pressure and other process parameters of the measurement.
Model Number | AEA 18 | Operating Temperature | -40~85°C |
Accuracy | ±0.1%; ±0.2%; ±0.075% | Storage Temperature | -40~85°C |
Output | 4~20ma, 4~20mA+HART, ModBus RS485 | Storage Humidity | ≤95%RH |
Power supply | 12~32VDC | Protection class | IP65/IP67 |
Ambient Temperature Effects | ≤±0.1%F.S/10°C | Explosion-proof | NEPSI Ex db IIC T6 Gb |
Long Term Stability | ≤±0.2%/URL (12 months) | Process connection | M20*1.5; G1/2; NPT1/2; NPT1/4; NPT1/2 |
Static Pressure Effect | ≤±0.1%/range/1MPa | Housing material | Cast Aluminum Alloy; SUS304 |
Response Time | 0.25s | Diaphragm material | SUS316L; Hastelloy C |
Power Supply Impact | ≤±0.005%/URL/V | Sensor seal material | Nitrile Rubber; Fluorosilicone; Teflon PTFE |
Vibration Effects | ≤±0.25%/URL/g | / | / |
Applications of Differential Pressure transmitter
Hydraulic Systems: DP transmitters are used in hydraulic systems to monitor pressure differences and ensure smooth operation and safety.
Steam Systems: DP transmitters are employed in steam systems to measure the pressure difference across steam traps and identify malfunctioning traps.
Air Handling and HVAC: In ventilation systems, DP transmitters are used to monitor air pressure differences, filter conditions, and airflow.
Environmental Monitoring: DP transmitters are used in environmental monitoring equipment to measure pressure changes in weather systems or natural gas pipelines.
Measurement Range | Measurement Type | Minimum Range | Upper Range Limit | Lower Range Limit | Overpressure Limit Value |
0-6KPa | Differential Pressure | 1KPa | 6KPa | -6KPa | 16MPa |
High Static Pressure | 1KPa | 6KPa | -6KPa | 25MPa | |
0-40KPa | Gauge Pressure | 1KPa | 6KPa | -6KPa | 16MPa |
Differential Pressure | 4KPa | 40KPa | -40KPa | 16MPa |