Melt pressure transducers work for pressure measurement & control of melt under high temperature.
SI-PT series melt pressure sensors work for high temperature melt pressure measurement and control. SI-PT series high temperature melt pressure sensor has the advantages of high accuracy. Good stability. Large output signal. Good dynamics and strong versatility. Melt pressure sensors are widely used in: Gas pipe production lines. Plastic pipe production line. Geonet unit. Single corrugated pipe production line. Core layer foamed pipe production line. Plastic sheet (sheet) extrusion line. Polystyrene foam pipe production line. Film blowing unit, extrusion unit, PE stretch film unit, etc.
Sino-Inst’s also offers hazardous location melt pressure transducer just as you need.
Sino-Inst is a manufacturer of high temperature melt pressure sensors in China. Committed to the manufacture, sales and engineering support of high temperature melt pressure sensors.
Featured Melt Pressure Sensors/Transducers
| Model | SI-PT 111 Melt Pressure Sensor |
| Description | PT111-series high temperature melt pressure sensor is mainly used for pressure measurement and control of molten materials under high temperature conditions. |
| Features | High accuracy. Stable and reliable. The output signal is large. Good dynamic performance. Strong versatility |
| Specifications | 1: Pressure range: 0 ～ 5MPa ～ 100MPa; 2: Accuracy: + 0.5% FS; + 1.0% FS; 3: Working power: 10VDC (6–12VDC); 4: Output signal: 0 ~ 5V; 0 ~ 10V; 4-20mA; 5: Calibration method: 80% FSO + 1%; 6: Probe temperature resistance: 300 ℃; 7: Temperature drift: ≤0.30Mpa / 100 ℃; 8: Electrical connection: universal five-core connector; military five-core connector; 9: Overload pressure: 1.5 * FS; 10: Mechanical connection: 1/2 “-20UNF, M14 * 1.5, M22 * 1.5, G3 / 4 and other multi-thread sizes; 11: Anti-corrosion and wear-resistant coating: suitable for pressure measurement of high-concentration rough media, which can increase the applicable life 3-5 times; |
| Applicaitons | Widely used in petroleum, chemical fiber, plastic, rubber and other industries. |
| Model | SI-PT112 melt pressure transmitter |
| Description | PT112 series rigid rod high-precision pressure transmitter is mainly used for various occasions that require accurate data measurement. This product uses special material and alloy elastic diaphragm to reduce temperature drift and improve measurement accuracy. The zero full scale can be adjusted, and the amplified signal is directly input to the PLC, and the internal 80% calibration. |
| Features | High precision. Stainless steel package. Easy to install. Can replace similar imported products. 80% internal alignment. Good stability repeatability. |
| Specifications | 1. Measuring range: 0… 5MPa ~ 0… 200MPa 2. Comprehensive accuracy: ± 0.25% FS; ± 0.5% FS 3. Output signal: transmitter signal: 0 ~ 5V; 0 ~ 10V; 4-20mA; sensor signal: 2mV / V; 3.33mV / V 4. Power supply voltage: Transmitter: 24VDC (12 ~ 36) VDC; Sensor: 10VDC 5. Process connection: 1/2 ″ -20UNF, M14 × 1.5, M18 × 1.5, M22 × 1.5, G3 / 4 ″ optional 6. Electrical connection: 5 cores, 6 cores, optional |
| Applicaitons | High temperature fluid media in chemical fiber spinning, polyester, and other equipment. |
| Model | SI-PT123 flexible high temperature melt pressure transducer |
| Description | PT123 flexible hose-type melt pressure sensor, which is equipped with a temperature sensor, can achieve the same point pressure and temperature measurement. |
| Features | High precision; Stainless steel package; Easy installation; Can completely replace similar imported products; 80% internal calibration; Good stability and repeatability |
| Specifications | 1. Measuring range: 0… 3.5MPa ~ 0… 150MPa 2. Comprehensive accuracy: ± 0.25% FS; ± 0.5% FS 3. Output signal: 2mV / V; 3.33mV / V 4. Power supply voltage: 10 (9 ~ 12V) DC 5. Process connection: 1/2 ″ -20UNF, M14 × 1.5, M18 × 1.5 (customer-defined) 6. Diaphragm temperature: 350 ℃ (* High 400 ℃) 7. Diaphragm material: 15-5PH coated stainless steel 8. Electrical connection: 5 core, 6 core |
| Applicaitons | Pressure measurement and control of high temperature fluid media in chemical fiber spinning, polyester and other equipment. |
| Model | SI-PT124 high temperature melt pressure sensor |
| Description | Rigid rod, hose isolation, diaphragm isolation structure, PT124 high temperature melt pressure sensor can be completely interchangeable with similar products such as American Dynisco, GEFRAN, RKC. |
| Features | Rigid rod, hose isolation, diaphragm isolation structure |
| Specifications | 1. Pressure range: optional within 0 ～ 5MPa ～ 200MPa; 2. Accuracy: + 0.25% FS; + 0.5% FS; 3. Input voltage: 10VDC (6–12VDC); 4. Output signal: 1.5mv / v, 2.0mV / V, 3.3mV / V; 5. Calibration method: 80% FSO + 1%; 6. Probe temperature resistance: 450 ℃; 7. Temperature drift: ≤0.30Mpa / 100 ℃; 8. Electrical connection: universal five-core connector; 9. Overload pressure: 1.5 * FS; high temperature melt pressure transmitter 10.Mechanical connection: 1/2 “-20UNF, M14 * 1.5, M18 * 1.5, M22 * 1.5, and other multi-thread sizes; 11. Anti-corrosion and wear-resistant coating: suitable for pressure measurement of high-concentration rough media, which can increase the applicable life 3-5 times; |
| Applicaitons | Pressure measurement and control of high temperature fluid media used in chemical fiber spinning, polyester, rubber and plastic machinery. |
| Model | SI-PT127 high temperature melt pressure sensor |
| Description | PT127 high temperature melt pressure sensor is mainly used in various occasions that require accurate data measurement. This product uses special material and alloy elastic diaphragm to reduce temperature drift and improve measurement accuracy. |
| Features | Rigid rod, hose isolation, diaphragm isolation structure. Good stability and accuracy; |
| Specifications | 1. Range: 0 ~ 5 ~ 200MPa 2. Comprehensive accuracy: 0.5% FS; 1% FS 3. Output signal: 1.5mV / V; 2mV / V; 3.33mV / V 4. Power supply voltage: 10VDC 5. Temperature model: J, K, E, PT100 6. Diaphragm temperature resistance: 450 ℃ 7. Electrical connection: 5-pin connector 5 pin 8. Process connection: M22 × 1.5; special design |
| Applicaitons | Measurement and control of pressure and temperature of high temperature fluid media of chemical fiber spinning, polyester, rubber and plastic machinery and other equipment. |
| Model | SI-PT131 high temperature melt pressure and temperature transducer |
| Description | PT131 has good stability and accuracy. It is completely interchangeable with similar products such as Dynisco, GEFRAN, RKC, etc. |
| Features | Rigid rod, hose isolation, diaphragm isolation structure |
| Specifications | 1: Pressure range: optional within 0 ～ 5MPa ～ 200MPa 2: Accuracy: + 1.0% FS; + 0.5% FS; 3: working power: 10VDC (6–12VDC); 4: Output signal: PT131 series: 1.5mv / v, 2.0mV / V, 3.3mV / V 5: Calibration method: 80% FSO + 1%; 6: Probe temperature resistance: 450 ℃ 7: Temperature Model: PT131 (E; J; K) 8: Electrical connection: PT131-series: universal seven-core connector 9: Overload pressure: 1.5 * FS 10: Mechanical connection: 1/2 “-20UNF, M14 * 1.5, M18 * 1.5, M22 * 1.5, etc. 11: Anti-corrosion and wear-resistant coating: suitable for pressure measurement of high-concentration rough media, which can increase the applicable life 3-5 times |
| Applicaitons | Pressure measurement and control of high temperature fluid media used in chemical fiber spinning, polyester, rubber and plastic machinery. |
| Model | SI-PT2616 flange high temperature melt pressure transmitter |
| Description | PT2616 flange high temperature melt pressure transmitter is a new pressure measuring transmitter launched by our company. It is used to measure high precision and pollution-free environment. The product combines the latest technology of the industry, using special elastic diaphragm and pressure Strain gauges. Greatly reduced measurement error, more stable and more wear-resistant. |
| Features | High precision, stainless steel material sealing, simple installation, good stability, zero degree full scale adjustable, linear output can be directly PLC, good working characteristics and explosion-proof. |
| Specifications | 1. Pressure measuring range: 0 ~ 5, 0 ~ 200Mpa 2. Accuracy: ≤ ± 0.5% full scale 3. Signal output: 1.5mv / v, 2.0mV / V, 3.3mV / V 4. Input voltage: 10VDC (6-12) VDC 5. Electrical connection: 6-pin universal aviation plug 6. Mechanical connection: flange connection, size can be customized 7. Diaphragm temperature resistance: 300 ℃ 8. Overpressure: 1.5% full scale |
| Applicaitons | This product is suitable for measuring the pressure of high temperature melt and the measurement of melt of plastic, plastic, rubber, chemical fiber and other extruder and extruder. |
| Model | SI-PT292 explosion-proof high temperature melt pressure transducer |
| Description | The PT292 series is an intelligent 4-20mA pressure transmitter designed for use in hazardous areas. PT292 high temperature melt pressure transducer type products have passed the Class 1, Division I, Groups A, B, C and D explosion-proof certification. Explosion-proof products include wire connections. Type PT292 is ATEX II 1 G 100a certified and Eex ia IIC 0 and 1 zone intrinsically safe. This intrinsically safe and ATEX version is available with either a connection wire connection or a 6-pin connection. |
| Features | Configurable by hand； Repeatable precision pressure measurement； Direct output to DCS or PLC; Users can precisely adjust the pressure range; Certification for use in hazardous environments; Meets new EC requirements |
| Specifications | 1. HARTTM Digital Communications 2. Comprehensive error better than ± 0.25% 3. 4-20mA loop-powered output 4. 0-500 to 0-30,000 psi 5. Ex, intrinsically safe or ATEX certified |
| Applicaitons | Pressure measurement and control of high temperature fluid media used in chemical fiber spinning, polyester, rubber and plastic machinery. |
Extended reading: Flat Pressure Sensor for High Viscosity Fluids
Working Principle of Melt Pressure Transducer
The working principle of the melt pressure sensor is that the pressure of the medium directly acts on the diaphragm of the sensor. The diaphragm produces a micro-displacement proportional to the pressure of the medium. The resistance of the sensor changes. The change is detected by electronic circuits. The conversion outputs a standard signal corresponding to this pressure.
Precautions for buying high temperature melt pressure sensors
1. What kind of pressure is being measured. Generally, the maximum pressure range of the high temperature melt pressure sensor you need should reach 1.5 times the maximum pressure value of your system. All high temperature melt pressure sensors are designed to withstand the maximum pressure for 200 million cycles without degrading performance. You need to find a compromise solution between system performance and high temperature melt pressure sensor life.
2. Consider the type of media that needs to be measured. The key factor to consider when selecting a high temperature melt pressure sensor is the medium being measured. Will it be a viscous liquid or a slurry on the pressure head? Is the contact with the high temperature melt pressure sensor a soluble or corrosive medium or clean dry air? This question determines whether impact dies are needed and what materials are used to make contact with the media.
3. Consider the accuracy you need to achieve. Accuracy is a term commonly used by manufacturers to describe the output error of high temperature melt pressure sensors. The cost of having a higher accuracy high temperature melt pressure sensor will be higher. Then your system really needs such high accuracy ? A system consisting of a high-precision high-temperature melt pressure sensor and a low-resolution instrument is actually a low-efficiency solution.
4. Carefully consider the temperature resistance, interchangeability, time stability and ruggedness of the high temperature melt pressure sensor to be purchased.
5. What output method does the high temperature melt pressure sensor you want to use. The required excitation voltage, and how to connect the high temperature melt pressure sensor to your electrical system.
Extended Reading: strain gauge pressure transducer
Use of high temperature melt pressure sensor
Installation
The correct installation position of the high temperature melt transmitter on the process pipeline is related to the measured medium. In order to obtain the best measurement results, pay attention to several points:
- Prevent the transmitter from coming into contact with corrosive or hot media;
- When measuring liquid pressure, the pressure taking port should be opened on the side of the process pipeline to avoid sedimentation;
- Prevent dross from depositing in the duct;
- When measuring the gas pressure, the pressure taking port should be opened at the top of the process pipeline, and the transmitter should also be installed at the top of the process pipeline so that the accumulated liquid can be easily injected into the process pipeline;
- When measuring steam or other high-temperature media, a condenser such as a buffer tube (coil) must be connected, and the operating temperature of the transmitter should not exceed the limit;
- The pressure guiding tube should be installed in a place with small temperature fluctuations;
- When freezing occurs in winter, it is necessary to take anti-freezing measures according to the transmitter installed outdoors to avoid the expansion of the liquid in the pressure port due to the freezing volume, leading to damage to the sensor;
- When wiring, pass the cable through the waterproof joint or flexible pipe and tighten the sealing nut to prevent rainwater, etc. from leaking into the transmitter housing through the cable;
- When measuring the liquid pressure, the installation position of the transmitter should avoid the impact of the liquid to avoid damage to the sensor due to overpressure.
Maintenance
High temperature melt transmitters are required to be checked once a week. Check every month. It is mainly to remove dust from the instrument. Carefully inspect electrical components. Always check the output current value. There is weak current inside the pressure transmitter. Be sure to keep it away from strong external electricity.
extrusion melt pressure transducer
In plastic and rubber extrusion production lines, melt pressure sensors play an important role in improving melt quality, improving production safety and protecting production equipment. At the same time, the high temperature melt pressure sensor is a very sensitive element. Only proper installation and maintenance can make it work to its fullest.
In the extrusion production process, some quality standards of the product (such as dimensional accuracy or the surface flatness of the parts added with mineral fillers, etc.) require optimal control of the extrusion pressure. Melt pressure sensor is an important element to achieve this requirement. By setting the melt pressure sensor and pressure control device at the mold inlet connection. It can make the product more stable and can reduce the waste of materials.
In addition, measuring the pressure across the screen and the melt pump is very important to ensure the safety of production and the optimal performance of the equipment. If the flow of the melt into the mold is blocked, a sensor under the screen will alert the operator (which can be done via a meter) to alert the operator.
When a sensor upstream of the filter sounds an alarm, it indicates that the pressure inside the extruder is too high, possibly causing excessive wear on the screw.
For manufacturers applying melt pumps, it is necessary to measure the inlet and outlet pressures of the melt medium. To ensure that the melt medium can continuously flow into the mold. Because of any obstruction, the melt pump may be blocked.
A pressure sensor equipped on an extrusion line can measure the pressure at only one point, or it can be a series of sensors used to measure the entire line.
Melt pressure sensor is connected with data recorder and sound alarm device. The processing parameters of the extruder can be adjusted using the processing control system.
Common faults of high temperature melt pressure sensor digital instruments
- High temperature melt pressure gauge with black screen. Make a preliminary judgment as to whether the 220v power supply line is faulty. The pressure gauge may burn out.
- Word skip appears on the pressure gauge. Preliminarily judge whether the connection of the signal line between the sensor and the pressure instrument is bad; whether the shield line is connected to the ground. There are interference signals at the scene. (Poor contact between the welding points inside the meter).
- The upper window of the meter displays —- or 0000. The signal cable between the sensor and the meter may be connected incorrectly. Or the sensor leads are broken.
- The pressure display on the upper window of the meter does not rise but decreases, which may be the damage of the sensor diaphragm.
- The pressure gauge functions normally, that is, the pressure cannot reach the target value. Check the sensor threads. Installing too shallow or too deep may cause it. Adjusting the torque to the normal range pressure shows normal;
- The high temperature melt pressure gauge shows a negative number. Cannot clear calibration. The high-temperature melt pressure gauge is subjected to an instantaneous strong current shock, which causes damage to the instrument protection components.
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Sino-Inst is Manufacturer of Melt Pressure Transducers. We supply more than 20 kinds of Melt Pressure Transducers. 90% Melt Pressure Transducers are used for precise measurement and control of high temperature such as rubber, plastic, chemical fiber, polyester nylon, polyester, steam, etc.
Sino-Inst’s high temperature Melt Pressure Transducers are used in the pressure measurement of high temperature melt, fluid and gas medium in chemical fiber spinning, polyester rubber, plastic rubber and plastic, extrusion machinery, non-woven non-woven, construction packaging materials and other equipment.
High temperature melt pressure sensor is used for pressure measurement and control of high temperature fluid medium in chemical fiber spinning, polyester, rubber and plastic machinery and other equipment.
Melt Pressure Transducers enable stable pressure measurement with high temperature. This greatly meets the measurement needs of many applications.
Sino-Inst’s Melt Pressure Transducers, made in China, Having good Quality, With better price. Our pressure measurement instruments are widely used in China, India, Pakistan, the US, and other countries.
The entire team at Sino-Inst’s has received excellent training, so we can ensure that every client’s needs are met. For assistance with your product requirements, whether it’s a Melt Pressure Transducers, level sensor, or other device, give us a call.
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Wu Peng, born in 1980, is a highly respected and accomplished male engineer with extensive experience in the field of automation. With over 20 years of industry experience, Wu has made significant contributions to both academia and engineering projects.
Throughout his career, Wu Peng has participated in numerous national and international engineering projects. Some of his most notable projects include the development of an intelligent control system for oil refineries, the design of a cutting-edge distributed control system for petrochemical plants, and the optimization of control algorithms for natural gas pipelines.