High temperature pressure transmitter

Pressure gauge>>ZW308High temperature pressure (sensor) transmitter：

1、 Instrument Introduction:

High temperature pressure transmitterSelecting a high-temperature pressure sensor as the signal measurement element, the pressure of the measured medium is transmitted to the sensor through the heat dissipation structure on the transmitter. The high-precision signal processing circuit is located inside the stainless steel housing, converting the sensor output signal into a standard output signal. The entire product has undergone strict testing and aging screening of components, semi-finished products, and finished products, with stable and reliable performance, enabling the product to work stably for a long time when used for pressure measurement in high-temperature media.

2、 Working principle:
The pressure transmitter adopts diffusion or ion implantation processes to form resistors and connect them into a Wheatstone bridge, and uses micro machining technology to form a pressure sensitive diaphragm under the bridge. 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、 Application scope:
High temperature pressure transmitterIt 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、 Advantages:
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、 Performance 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.

7、 Selection spectrum:

Selection Tips:
1. The temperature range of the product can be sorted into five items, and users can determine the temperature range according to their industrial and mining requirements, making their product selection more economical.
2. Select the additional function code "i" for intrinsically safe explosion-proof EXdIICT6, which must be powered by a safety barrier.
3. Please consult with our company for any other special requirements and indicate them in the order.
8、 Ordering Notice:
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. From the date of contract signing, Zhongwei Company will provide free maintenance and upkeep services for the products we provide, and promise lifelong repair services;
2. Jiangsu Zhongwei Measurement and Control Instrument Co., Ltd. will regularly communicate with customers to understand the usage of the product and solve any problems that may arise during customer use, and provide free of charge;
3. During the warranty period, if there is any man-made damage, our company is responsible for repairing it and collecting the repair costs incurred;
4. If there are quality problems or dissatisfaction with the product, users can choose to return or exchange it unconditionally. Zhongwei Measurement and Control does not charge any handling fees. If there are quality problems, they will bear the round-trip shipping costs.