Foshan puliang Electronic Co., Ltd

Product description of strain type pressure transmitter:

Model: PT124

The precision stable resistance strain gauge is used;
The selected placement process;
Planar thick film, anti blocking, pressure resistance, wear-resistant structure design;
The medium temperature can reach 450 ℃, which is specially used for melt pressure measurement;
The sensor has 80% self calibration function;

Common keywords:
High temperature melt pressure sensor
Melt pressure sensor steam pressure sensor
Boiler pressure sensor

PT series high temperature melt pressure sensor transmitter is suitable for measuring and controlling the pressure of chemical fiber, plastic, rubber and other high temperature fluids from 300 ℃ to 450 ℃.

It has the advantages of vibration resistance, high reliability and accuracy, and stable operation. Because of the unique advantages of strain sensor, our company has made significant improvement on the pressure sensitive film, which is in the leading position in the field of high temperature melt pressure sensor in China. It can completely replace all the high temperature melt pressure sensors of dynisco, and has good interchangeability.

PT series sensors and py series instruments of our company can meet various requirements of different users. They can also be used directly with imported instruments (dynisco) without any adjustment or modification. The connection thread and connector are all universal.

The sensor chip is made of precision stable resistance strain gauge;
The selected placement process;
Flat film isolation thick film, anti blocking, pressure resistance, wear-resistant structure design;
The medium temperature can reach 450 ℃, which is specially used for melt pressure measurement;
The sensor has 80% self calibration function;
It has zero point, full range compensation and temperature compensation;
High precision and high stability amplifier IC;
Full seal welding structure, impact resistance, fatigue resistance and high reliability;
Straight rod + software tube + five core aviation connector structure, convenient for product installation and debugging;
304 / 316 material, reliable and strong strength;
It can replace foreign products of the same type;

The main applications of pt124 high temperature melt pressure sensor are as follows
Pressure measurement of high temperature melt in rubber equipment, plastic equipment, chemical fiber, polyester polyamide fiber equipment and polyester equipment;
High temperature steam measurement and control;
High temperature boiler pressure measurement;

Application fields:

Steam supply system
Oil pressure system
Metallurgical equipment
Casting equipment

Product family:

PT500-503H

Specification parameter

Measuring medium: high temperature melt, liquid, gas, steam, etc
Pressure form: gauge pressure
Range: 0-5, 10, 15, 20, 25, 30, 35 (conventional), 40, 50, 60, 70 (MPA);
Comprehensive accuracy: ± 0.25% FS; ± 0.5% FS; ± 1% FS
Nonlinearity: ≤ 0.5% FS
Repeatability: ≤ 0.25% FS
Pressure output signal: 2.0mv/v (bridge output, constant voltage power supply)
Power supply voltage: 10VDC (5-12vdc)
Service life: ≥ 1 million times
Insulation impedance: ≥ 1000 m Ω / 100VDC
Medium temperature: 0 ～ 450 ℃
Ambient temperature: - 20 ～ 80 ℃
Compensation temperature: 0 ～ 70 ℃
Response time: ≤ 5ms
Overload pressure: 150% FS
Failure pressure: 3 times of measuring range (less than 40MPa); 2 times of measuring range (measuring range greater than 41mpa)
Electrical connection: 5-core aviation connector
Protection grade: IP65
Connecting cable: five core shielded cable, standard length: 8m
Connection material: 304
Process connection: m12x1.5, M14x1.5, m18x1.5, 1 / 2 "- 20unf Specification can be made by users

Ordering considerations

Precautions for installation of PT124 high temperature melt pressure sensor

In order to prolong the service life of the sensor as far as possible and improve the use accuracy, the user should pay attention to the following six points after receiving the sensor or the instrument, in addition to carefully reading the instruction manual.

1. Sensor installation
One of the most easily damaged factors of the pressure sensor is that it is installed in an inappropriate hole. If the hole is too small or too partial, the sensor diaphragm will be scratched, which will affect the test accuracy and even completely fail. Our factory can provide installation hole processing tools to help process the most suitable installation hole.

2. Cleaning of mounting holes
When the mounting hole is properly machined, it is most important to ensure that there is no metal foreign matter or plastic stored in the hole. Before cleaning the extruder, remove all sensors from the equipment to avoid damaging the diaphragm. Before the second installation, clean the mounting holes with cleaning tools.

3. Incorrect installation
If the sensor is installed too close to the material mouth, the unmelted plastic or chemical fiber particles will damage the diaphragm of the sensor. If the sensor is inserted too shallow, a deposit of unmelted rubber will be formed between the diaphragm and the screw, which will carbonize for a long time and affect the accurate measurement of pressure force. However, if the sensor is inserted too deep, the diaphragm will be damaged.

4. Cold start
After the sensor is installed, there must be enough heating time to ensure that the material enters into the screw and can be changed into appropriate fluid. When the sensor is unloaded, it should be ensured that the screw is carried out at normal working temperature, otherwise the sensor and equipment are easy to be damaged.

5. Installation position of sensor
The temperature resistance of the sensor probe is 450 ℃ and the shell part is 80 ℃. In the design of the mounting hole, the sensor should be installed at the lower part or side of the host as much as possible. After installation, the sensor shell should be checked whether it is on the insulation layer or heating block, and the sensor should be fixed with a bracket as far as possible away from the temperature area.

6. Effect of overload
Although the sensor has an overload capacity of 1.5-2 times of the rated pressure, long-term overload will affect the service life of the sensor. The sensor can be used at 0.5-0.8 times of the rated pressure.

Precautions for use

Precautions of PT124 high temperature melt pressure sensor

1. After opening the product package, please carefully check whether the product appearance is in good condition, check whether the product specification and certificate are consistent with the product, and properly keep the product manual and certificate for more than one and a half years.

2. Strictly follow the wiring diagram of the product, and work under the allowable excitation voltage of the product. Never use over-voltage.

3. It is strictly forbidden to use the product under excessive pressure. Please stop the machine for inspection if the product is abnormal.

4. Do not pull the cable when connecting the product to avoid damaging the internal structure of the product.

5. When the product is installed, the wrench can only be jacketed at the hexagon wrench interface, and it is forbidden to install it at the installation position of the outer pipe and tail joint of the product.

6. After a long-term test of the product, the test medium may block the pressure hole and reduce the output sensitivity of the product. When cleaning the product, the liquid with dissolved organic solvent can be used for multiple times. It is forbidden to use any utensils extending into the pressure hole to avoid damaging the pressure sensitive film.

7. No knocking is allowed in the forbidden area of the product to avoid damaging the internal structure.

8. There are no customer self repair parts in the product. Please contact our company if there is any fault.

9. The flameproof sensor transmitter is directly screwed into the equipment or pipeline at any position (vertical, horizontal and inclined) and tightened with a wrench. If the cable protection pipe is required, the cable shall be installed in the protective tube, and the protective tube shall be threaded with the explosion-proof joint. During installation, attention shall be paid to the adaptability of the interface thread. The free end of the cable shall be properly treated and connected to the corresponding explosion-proof box or equipment.

10. The working medium of flameproof sensor transmitter is fluid. There should be no solidification or damage to the film sheet in the working temperature range. The interface thread should be free from pollution and the front end of the sensor should be clean.

11. The warranty period is 13 months (14 months from the date of delivery to the date of return) when the products of our company fail in normal use. The quality inspector of our company shall determine whether the fault occurs under normal circumstances. Beyond the scope of maintenance, the company charges cost, the company's products lifelong maintenance.

12. Please refer to our company's information or call for further information.

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