Double flange differential pressure transmitter with metal sensor uses two capillary diaphragm seals. Typically used in process and hygiene applications for continuous measurement of pressure differences in liquids, vapors, gases and dusts.
Range: 0~1KPa~3MPa
Resolution: ±0.2%
Ingress protection: IP65/IP67
Output: 4-20mA, HART, ModBus RS485
Power supply: 10~32VDC
Double flange differential pressure/pressure transmitter is also called differential pressure level transmitter. It is installed at the bottom and top of the liquid container and transmits pressure changes through silicone oil. The pressure difference causes the diaphragm box to deform, and the deformation displacement is transmitted to the sensitive element of the transmitter through the capillary tube, converted into an electrical signal, and outputs a standard industrial signal after processing.
Double flange differential pressure transmitter is widely used in various industries, such as petroleum, chemical industry, water treatment, etc. It can be used to measure the flow of various media such as gas, steam, liquid, etc., with high measurement accuracy, wide application range, and long service life.
| Model | AED 28 |
| Accuracy | ±0.2% |
| Output | 4~20ma, 4~20mA+HART, ModBus RS485 |
| Power supply | 12~32VDC |
| Ambient Temperature Effect | ≤±0.1%F.S/10°C |
| Long-term Stability | ≤±0.2%/URL (12 months) |
| Static Pressure Effect | ≤±0.1%/range/1MPa |
| Response Time | 0.25s |
| Power Supply Effect | ≤±0.005%/URL/V |
| Vibration Effect | ≤±0.25%/URL/g |
| Working Temperature | Normal temperature silicone oil: -40~150°C |
| High temperature silicone oil: 15~315°C | |
| Fluorine oil: -45~205°C | |
| Vegetable oil: 10~80°C | |
| Storage Temperature | -40~85°C |
| Storage Humidity | ≤95%RH |
| Protection Level | IP65/IP67 |
| Explosion-proof Level | NEPSI Ex db IIC T6 Gb |
| Process Connection | M20*1.5; G1/2; NPT1/2; NPT1/4; NPT1/2 |
| Shell Material | Cast aluminum alloy; SUS304 |
| Diaphragm Material | SUS316L; Hastelloy C; Tantalum; SUS316L gold-plated; SUS316L PTFE coating |
| Sensor Seal Ring Material | Nitrile rubber; Fluorosilicone; Polytetrafluoroethylene PTFE |
| Filling Fluid | Normal temperature silicone oil; High temperature silicone oil; Fluorine oil; Vegetable oil |
| Range Segment | Measurement Type | Minimum Range | Upper Range Limit | Lower Range Limit |
| 0-40KPa | Differential Pressure | 4KPa | 40KPa | -40KPa |
| Gauge Pressure | 4KPa | 40KPa | -40KPa | |
| 0-250KPa | Differential Pressure | 25KPa | 250KPa | -100KPa |
| Gauge Pressure | 25KPa | 250KPa | -100KPa | |
| 0-3MPa | Differential Pressure | 0.15MPa | 3MPa | -0.1MPa |
| Gauge Pressure | 0.15MPa | 3MPa | -0.1MPa |
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