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Product Overview/Product Overview -------------------------------------------
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| Capacitive differential pressure transmitters and remote differential pressure transmitters are new products in differential pressure transmitters. Widely used in enterprises and institutions such as petroleum, chemical, metallurgical, power, light industry, building materials, scientific research, etc., it can measure the pressure of various fluids. Equipped with throttling devices, it can detect the flow rate of liquids, vapors, and vapors, as well as viscous, precipitating, or easily crystallized fluids. It can also detect differential pressure, gauge pressure, and interfaces, and can also detect the liquid level in open or pressurized containers. |
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Structural components ----------------------------------------------
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| 1. Front cover of header 2. Header 3. Metal cover 4. Shell 5. Nameplate label 6. Explosion proof joint 7. Wiring terminal 8. Header back cover 9. Drain valve 10. Bolt 11. Clamp plate 12. Sensor sealing ring 13. Sensor 14. Nut 15. Welded pipe joint assembly |
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Product Features
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◆ Small size and light weight. Because it has fewer components, a simple structure, and the conversion and connection of differential pressure, displacement, and capacitance signals, it greatly compresses the volume and reduces weight.
High precision. Due to the absence of mechanical transmission and friction, and the relatively large variation in capacitance values, it is easy to achieve high accuracy.
◆ Good reliability. Due to the small number of movable parts and the solid structure of the measuring components that are fully enclosed and welded, electronic components undergo strict aging screening and use special bead connectors, greatly improving the reliability of the transmitter.
The adjustable range is large, and it has positive and negative transfer structures. The adjustable range is greater than 6:1, and the external connection of the zero point of the range can be adjusted.
◆ Good overload performance. The sensor adopts a simple and reliable concave arc overload protection structure internally.
◆ Equipped with adjustable damping device, it can be used for measuring pulsating fluids.
The transmitter is used in dedicated circuits for explosion-proof and intrinsic safety types, with a maximum output of less than 30mA.
The transmitter can be equipped with a 100% pointer, LCD display, and LED digital display, making on-site reading very convenient.
The transmitter adopts a standard current signal output of 4~40mA DC, operates in a two-wire system, is loaded, and has strong anti-interference ability.
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Product Parameters/Product Parameters -------------------------------------------------
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1. Main technical parameters
| name |
differential pressure transmitter |
| application |
Liquid, gas, steam |
| measuring range |
0-10Mpa |
| accuracy class |
0.2%, 0.1%, 0.5% |
| Supply Voltage |
24V DC |
| output signal |
4-20mA HART |
| ambient temperature |
-20～55℃ |
| relative humidity |
5%～90% |
| DIAPHRAGM MATERIAL |
316L, Hastelloy alloy |
| protection grade |
IP65 |
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Product Dimensions
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Range and Range Limits/Range and Range Limits ----------------------------------------------
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| Nominal range |
minimum range |
Lower Range Limit (LRL) |
Range upper limit (URL) |
Static pressure range |
One way high voltage end overload |
One way low voltage end overload |
| 6kPa |
200Pa |
-6kPa |
6kPa |
25MPa |
25MPa |
16MPa |
| 40kPa |
400Pa |
-40kPa |
40kPa |
40MPa |
25MPa |
16MPa |
| 250kPa |
2.5kPa |
-250kPa |
250kPa |
40MPa |
25MPa |
16MPa |
| 1MPa |
10kPa |
-500kPa |
1MPa |
40MPa |
25MPa |
16MPa |
| 3MPa |
30kPa |
-500kPa |
3MPa |
40MPa |
25MPa |
16MPa |
| 10MPa |
100kPa |
-500kPa |
10MPa |
40MPa |
25MPa |
16MPa |
| Requirements for setting high and low limit values: The low limit value (LRV) and high limit value (URV) should be taken within the upper and lower limits of the range. When | URV | ≥ | LRV |, | URV | ≥ minimum range must be met; When | URV | ≤ | LRV |, it is necessary to meet | LRV | ≥ minimum range |
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Installation and Use/Installation and Use
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Installation Precautions/Installation Precautions -------------------------------------------------------------------------
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① Prevent the transmitter from coming into contact with corrosive or overheated measuring media.
② To prevent debris from depositing inside the pressure pipe.
③ The pressure pipe should be as short as possible.
④ The pressure head of the liquid column inside the pressure pipes on both sides should be kept balanced.
⑤ The pressure conduit should be installed in a location with small temperature gradients and fluctuations.
⑥ Prevent crystallization or low-temperature freezing inside the pressure pipe.
⑦ Do not unscrew all exhaust/drain valves to prevent the sealing steel balls from falling off!
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