High temperature resistant pressure transmitter

Transmitter Series>>ZW2088 DurableHigh temperature pressure transmitter：

1、 Instrument Overview:

High temperature resistant pressure transmitterThe high-precision force sensitive chip using imported stainless steel isolation diaphragm is designed to measure pressure in sanitary environments. The flat membrane structure of the sensor can prevent blockage, scaling, and unhygienic conditions caused by viscous substances. It is suitable for environments with strict hygiene requirements. The membrane material is 316L, which has strong corrosion resistance and a wide temperature range of up to 120 ℃; The sensor connection interface is available in threaded, clamp, and flange types.

2、 Measurement principle:
High temperature resistant pressure transmitterResistors are formed using diffusion or ion implantation processes and connected to form a Wheatstone bridge. Pressure sensitive membranes are formed under the bridge using micro machining techniques. When pressure is applied to the diaphragm, the resistance value changes and a linearized output signal proportional to the applied pressure is generated. We add a DC power supply to the Wheatstone bridge, which produces an output of a DC voltage signal. After a secondary conversion circuit, achieve a two-wire system with 4-20mA output.

3、 Applicable occasions:
The pressure transmitter is an integrated stainless steel plane membrane structure, specially designed for food, medical, pharmaceutical and other health industries. The sensor interface has clamp type, M27 × 2, and flange type options. The sensor plane membrane structure prevents scaling, unsanitary and viscous liquid blockage. Widely used in process control fields such as food, pharmaceuticals, and brewing. Its industry applications include the following:
1. Food hygiene industry;
2. Paper industry;
3. Wastewater level measurement;
4. Measurement of liquid level in beverage cans;
5. Pipeline liquid level measurement;
6. Processing of pharmaceuticals and biological products.
4、 Performance characteristics:
1. Adopting high-precision and high stability anti-corrosion sensing membrane.
2. The assembly structure is special, minimizing the cavity of the pressure transmitter to the greatest extent possible.
3. Suitable for pressure measurement in various environments that are prone to blockage, require hygiene, or are easy to clean.
4. Diverse connection methods, suitable for various industrial and mining applications.
5. Can measure multiple media.
5、 Technical indicators:
1. Clean the flat isolation membrane and comply with the 3A hygiene standard;
2. Adopting ceramic capacitive pressure sensors or diffused silicon pressure sensors;
3. Range: 0-4KPa~35MPa;
4. Power supply: 15-36VDC;
5. Temperature drift: 0.02% FS/° C;
6. Accuracy: 0.25%;
7. Shell protection: IP65;
8. Electrical connection: Cable type \ Hosman connector \ \ 2088 shell \ \ Waterproof box type optional;
9. Temperature: The electronic circuit board operates at -40~85 ℃; Sensitive components operate at -40~104 ℃; Storage temperature -40~85 ℃; With digital display -25~65 ℃ (normal operation); -40-85 ℃ (no damage);
10. Relative humidity: 0-95%;
11. Stability: ± 0.25% of the maximum range within 6 months;
12. Vibration effect: In any axial direction, at a frequency of 200Hz, the error is within ± 0.05%/g of the maximum range;
13. Load impact: As long as the voltage of the input transmitter is higher than 12V, there is no load impact in the load working area;
14. Installation position impact: The maximum zero position error that can be generated is not greater than 0.25kPa, which can be eliminated through calibration without affecting the measurement range; The relative rotation of the measuring body to the flange has no effect.

6、 Precautions for use:

1. When freezing occurs in winter, anti freezing measures must be taken for transmitters installed outdoors to prevent the liquid in the pressure inlet from expanding due to freezing volume, which may cause damage to the sensor.

2. When wiring, thread the cable through the waterproof joint (accessory) or flexible tube and tighten the sealing nut to prevent rainwater and other substances from leaking into the transmitter housing through the cable.
3. When measuring gas pressure, the pressure tap should be opened at the top of the process pipeline, and a sanitary transmitter should also be installed at the upper part of the process pipeline to allow the deposited liquid to be quickly injected into the process pipeline.
4. When measuring steam or other high-temperature media, a condenser such as a buffer tube (coil) should be connected, and the operating temperature of the transmitter should not exceed the limit.
5. Note that the pressure tube of the sensor should be installed in a location with minimal temperature fluctuations.
6. When measuring liquid pressure, the installation position of sanitary pressure transmitters should avoid the impact of liquid (i.e. water hammer phenomenon) to prevent sensor damage caused by overpressure.
7. When measuring liquid pressure, the pressure tap should be opened on the side of the process pipeline to avoid sedimentation and slag accumulation.
8. To prevent the pressure transmitter from coming into contact with corrosive or overheated media, and to prevent debris from depositing inside the conduit.

7Selection List:

Example: ZW2088 series pressure transmitter:
Standard type, stainless steel material with M20 × 1.5 interface thread, fluororubber seal, accuracy of 0.5%, gauge pressure range of 0-1.6 MPa with linear gauge head.
Note: The standard measurement range is: 0-20kPa for the smallest and 0-35MPa for the largest. The measurement range for the ultra stable voltage type is: 0-10kPa for the smallest and 0-100MPa for the largest.
8、 Design and ordering instructions:
1. Sensor materials;
2. Used in explosion-proof environments;
3. Materials and connection methods of connectors;
4. Sealing material;
5. Accuracy;
6. Range of measurement;
7. Is there any additional option available.

After-sales service
1. The instrument series products sold by Zhongwei ensure the sale of products and spare parts at the same price within two years, and provide corresponding free of charge according to the requirements of the demand.
2. If there are any quality problems with the products provided by our company within one year (excluding vulnerable parts or accessories), we will be responsible for free repairs and provide free skill training for the employees of the demand side.
3. Due to quality issues with the products provided by our company, after verification by our technical department, we will dispatch professional technicians to the site to handle the problem until customer satisfaction is achieved.
4. Outside the warranty period, the product will be returned to the company for repair or sent to the user for repair.
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