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E-mail
576082652@qq.com
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Phone
18521942435
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Address
No. 70 Lishan Road, Lixia District, Jinan City
Product Categories
Shanghai Automation Instrument Company Jinan Branch
Integrated dual branch temperature transmitter
NegotiableUpdate on 01/09
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Overview
Integrated dual branch temperature transmitter, suitable for industries such as petroleum, chemical, metallurgical, power, aviation, shipbuilding, light industry, environmental protection, etc. It can be used in conjunction with dynamic coil instruments, digital display instruments, recording instruments, regulators, PLC, DCS systems to form various temperature measurement and control systems.
Product Details
WZPB integrated temperature transmitterIt is a combination of temperature sensors and transmitters that converts temperature signals within the range of -200~+1600 ℃ into a two-wire 4-20mADC electrical signal in a very simple way and transmits it to display instruments, regulators, recorders, DCS, etc., achieving accurate measurement and control of temperature. Integrated temperature transmitter is an updated product for temperature measurement and control in modern industrial sites and research institutes. It is a product of distributed systems and digital bus systems.
Integrated dual branch temperature transmitterfeature
Ultra small (module diameter 44 × 18) integrated, with strong versatility
Two line 4-20mADC output. Long transmission distance and strong anti-interference ability. Cold end, temperature drift, non-linear automatic compensation. High measurement accuracy and good long-term stability. The temperature module adopts epoxy resin casting technology internally, which is suitable for use in various harsh and dangerous places. Integrated design, simple and reasonable structure, can directly replace ordinary assembled thermocouples and thermistors.
Mechanical protection IP65.
Using thermocouple temperature change can eliminate the need for compensating wires and reduce costs
Various indication functions such as LCD, digital display, pointer, etc. facilitate timely monitoring on site.
When the on-site ambient temperature is above 70 ℃, the transmitter and on-site display instrument can be installed separately (isolated). If conditions do not permit, the method of extending the length of the protective tube can be used to achieve the purpose of protecting the temperature transmitter.
Explosion proof rating: dIIBT4, dIIBT5. CT4.CT6
Protection level: IP54, IP65
It can form an integrated on-site installation structure with thermocouples and thermistors, and can also be installed as a functional module in detection equipment and instrument panels for use.
technical indicators
Category SBW Modular Temperature Transformer SBW Integrated Temperature Transformer
Accuracy 0.2% F.S 0.5% F.S
Input thermocouples: B, S, T, K, J
Thermal resistance: Pt100, Pt10, Cu100, Cu50
Output two-wire 4-20mADC or three wire 4-20mADC
Operating temperature -25-85 ℃ (0-60 ℃ for integrated LCD meter)
Temperature impact ≤ 0.05%/℃
Humidity 5-95% RH
On site display shows no 3 1/2LED31/2LDC0-100% equally divided scale
Display accuracy without digital: 0.5 level pointer: 2.0 level
Load capacity<600 Ω (rated load 250 Ω)
Dimensions 44 × 1870 × 100 (repeater)
Technical Requirements
1) The integrated dual branch temperature transmitter can communicate with the upper computer through a HART modem or remotely manage, configure, monitor variables, calibrate, and maintain the model, scale, and range of the transmitter through handheld devices and PCs;
2) The integrated temperature transmitter can adjust the display direction of the transmitter according to the actual needs of the user, and display the medium temperature measured by the transmitter, changes in sensor values, output current, and percentage;
3) The integrated temperature transmitter adopts a silicone rubber or epoxy resin sealing structure, which is shock resistant, moisture resistant, and suitable for installation and use in harsh on-site environments.
4) Installed on-site in junction boxes for thermocouples and thermal resistors, it directly outputs 4-20mA and 0-10mA output signals. This not only saves expensive compensation wire costs, but also improves the anti-interference ability during long-distance signal transmission;
5) Thermocouple transmitters have automatic compensation function for cold junction temperature;
6) High precision, low power consumption, wide temperature range for use, stable and reliable operation;
7) Widely applicable, it can form an integrated on-site installation structure with thermocouples and thermistors, and can also be installed as a functional module in detection equipment and instrument panels for use;
Working principle
Working based on the measurement principle of liquid static pressure. This transmitter operates based on the measurement principle of liquid static pressure. It generally uses a silicon pressure sensor to convert the measured pressure into an electrical signal, which is then amplified and compensated by an amplification circuit, and finally output as a 4-20mADC electrical signal.
The integrated temperature transmitter can have actual vacuum, but is adjusted in the circuit processing stage to obtain absolute pressure. The gauge pressure measurement transmitter is equivalent to P2 reference atmospheric pressure P0 relative to atmospheric pressure measurement. Compared to atmospheric pressure measurement, it is equivalent to reference atmospheric pressure. Most of the pressure measurements on site are in this situation, such as main steam pressure measurement. Measurement is in this case, such as measuring the main steam pressure. Differential pressure measurement transmitters are mainly divided into liquid level measurement and flow measurement. Differential pressure measurement transmitters are mainly divided into liquid level measurement and flow measurement.
The extended understanding of the integrated temperature transmitter is that the liquid level sensor is based on the principle that the measured liquid static pressure is proportional to the height of the liquid. Based on the principle that the measured liquid static pressure is proportional to the height of the liquid, the isolation type diffusion silicon sensitive element or ceramic capacitive pressure sensitive sensor from abroad is used to convert the static pressure into an electrical signal. The diffusion silicon sensitive element or ceramic capacitive pressure sensitive sensor converts the static pressure into an electrical signal, and then converts it into a standard electrical signal through temperature compensation and linear correction.
The integrated temperature transmitter converts this small capacitance change into a standard current (or voltage) output through a balancing circuit, thereby obtaining a current (or voltage) signal output that is linearly related to pressure changes. Output, thus obtaining a current (or voltage) signal that is linearly related to pressure changes. The working principle of inductive transformers is also similar.
working principle
Explosion proof thermocouples utilize the principle of gap explosion-proof. When an explosion occurs inside the chamber, it can be extinguished and cooled through the gap between the joint surfaces, preventing the full temperature of the flame after the explosion from being transmitted outside the chamber, thus achieving explosion-proof.
The thermoelectric potential (resistance) generated by the thermocouple (thermistor) passes through the bridge of the temperature transmitter to generate an unbalanced signal. After amplification, it is converted into a 4-20mA DC electrical signal and sent to the working instrument, which displays the corresponding temperature value.
Measuring range
1) Temperature measurement range and tolerance of thermistor
2) Thermocouple temperature measurement range and tolerance
Characteristic analysis
Simulation Characteristics
● High precision
● Range and zero point can be continuously adjusted externally
● Good stability performance
Positive migration can reach 500%, negative migration can reach 600%
● Two line system
Adjustable damping and overvoltage resistance
Solid state sensor design
No mechanical movable parts, low maintenance volume
● Lightweight (2.4kg)
● Unified structure and strong interchangeability across the entire series
● Miniaturization (166mm total height)
The membrane material that comes into contact with the medium is optional
● Unilateral overpressure resistance
Low pressure cast aluminum alloy shell
Intelligent features:
Super measurement performance, used for pressure, differential pressure, liquid level, and flow measurement
● Digital accuracy:+(-) 0.05%
Simulation accuracy:+(-) 0.75%+(-) 0.1% F.S
● Full performance:+(-) 0.25F.S
Stability: 0.25 months
Range ratio: 100:1
Measurement rate: 0.2S
● Miniature (2.4kg) all stainless steel flange, easy to install
● Process connection is compatible with other products to achieve optimal measurement
The sensor with H-alloy sheath achieves excellent cold and hot stability
Intelligent transmitter using 16 bit computer
Standard 4-20mA, with digital signal based on HART protocol, remote control
● Support upgrades to fieldbus and field control based technologies.
performance metrics
maintenance
Due to its small size, the integrated temperature transmitter has many uses. My own maintenance experience is like this:
Attention to the use of integrated temperature transmitters:
1. Wiring: The wiring of the safety spark circuit (input signal line) must be insulated or shielded wires, and isolated from the wiring of non safety spark circuits to avoid mutual contact.
2. Different models of temperature transmitters should be wired according to the instructions. When wiring explosion-proof instruments with safety spark circuits, they must not be connected incorrectly and carefully checked for short circuits or incorrect connections.
3. When using temperature transmitters, special attention should be paid to the distinction between ordinary and intrinsic safety types. Ordinary types cannot be installed in hazardous areas, while intrinsic safety types can be installed in hazardous areas.
4. The input of the thermal resistance transmitter is a three wire system, and the line resistance of each connecting wire should be equal and within the same ambient temperature.
Maintenance knowledge of integrated temperature transmitter:
1. In principle, it is not allowed to disassemble the components of the safety spark circuit and replace the instrument wiring for explosion-proof instruments. If replacement is necessary, it should be carried out according to explosion-proof requirements.
2. During regular inspections, in order to accurately read data, a digital voltmeter should be connected between the output terminals for measurement, and the safety spark return line should not be removed.
3. After the instrument malfunctions, the power should be cut off for inspection, and power should not be supplied until the fault is detected.
4. The temperature transmitter should be kept clean during operation.
Integrated dual branch temperature transmitterfeature
Ultra small (module diameter 44 × 18) integrated, with strong versatility
Two line 4-20mADC output. Long transmission distance and strong anti-interference ability. Cold end, temperature drift, non-linear automatic compensation. High measurement accuracy and good long-term stability. The temperature module adopts epoxy resin casting technology internally, which is suitable for use in various harsh and dangerous places. Integrated design, simple and reasonable structure, can directly replace ordinary assembled thermocouples and thermistors.
Mechanical protection IP65.
Using thermocouple temperature change can eliminate the need for compensating wires and reduce costs
Various indication functions such as LCD, digital display, pointer, etc. facilitate timely monitoring on site.
When the on-site ambient temperature is above 70 ℃, the transmitter and on-site display instrument can be installed separately (isolated). If conditions do not permit, the method of extending the length of the protective tube can be used to achieve the purpose of protecting the temperature transmitter.
Explosion proof rating: dIIBT4, dIIBT5. CT4.CT6
Protection level: IP54, IP65
It can form an integrated on-site installation structure with thermocouples and thermistors, and can also be installed as a functional module in detection equipment and instrument panels for use.
technical indicators
Category SBW Modular Temperature Transformer SBW Integrated Temperature Transformer
Accuracy 0.2% F.S 0.5% F.S
Input thermocouples: B, S, T, K, J
Thermal resistance: Pt100, Pt10, Cu100, Cu50
Output two-wire 4-20mADC or three wire 4-20mADC
Operating temperature -25-85 ℃ (0-60 ℃ for integrated LCD meter)
Temperature impact ≤ 0.05%/℃
Humidity 5-95% RH
On site display shows no 3 1/2LED31/2LDC0-100% equally divided scale
Display accuracy without digital: 0.5 level pointer: 2.0 level
Load capacity<600 Ω (rated load 250 Ω)
Dimensions 44 × 1870 × 100 (repeater)
Technical Requirements
1) The integrated dual branch temperature transmitter can communicate with the upper computer through a HART modem or remotely manage, configure, monitor variables, calibrate, and maintain the model, scale, and range of the transmitter through handheld devices and PCs;
2) The integrated temperature transmitter can adjust the display direction of the transmitter according to the actual needs of the user, and display the medium temperature measured by the transmitter, changes in sensor values, output current, and percentage;
3) The integrated temperature transmitter adopts a silicone rubber or epoxy resin sealing structure, which is shock resistant, moisture resistant, and suitable for installation and use in harsh on-site environments.
4) Installed on-site in junction boxes for thermocouples and thermal resistors, it directly outputs 4-20mA and 0-10mA output signals. This not only saves expensive compensation wire costs, but also improves the anti-interference ability during long-distance signal transmission;
5) Thermocouple transmitters have automatic compensation function for cold junction temperature;
6) High precision, low power consumption, wide temperature range for use, stable and reliable operation;
7) Widely applicable, it can form an integrated on-site installation structure with thermocouples and thermistors, and can also be installed as a functional module in detection equipment and instrument panels for use;
Working principle
Working based on the measurement principle of liquid static pressure. This transmitter operates based on the measurement principle of liquid static pressure. It generally uses a silicon pressure sensor to convert the measured pressure into an electrical signal, which is then amplified and compensated by an amplification circuit, and finally output as a 4-20mADC electrical signal.
The integrated temperature transmitter can have actual vacuum, but is adjusted in the circuit processing stage to obtain absolute pressure. The gauge pressure measurement transmitter is equivalent to P2 reference atmospheric pressure P0 relative to atmospheric pressure measurement. Compared to atmospheric pressure measurement, it is equivalent to reference atmospheric pressure. Most of the pressure measurements on site are in this situation, such as main steam pressure measurement. Measurement is in this case, such as measuring the main steam pressure. Differential pressure measurement transmitters are mainly divided into liquid level measurement and flow measurement. Differential pressure measurement transmitters are mainly divided into liquid level measurement and flow measurement.
The extended understanding of the integrated temperature transmitter is that the liquid level sensor is based on the principle that the measured liquid static pressure is proportional to the height of the liquid. Based on the principle that the measured liquid static pressure is proportional to the height of the liquid, the isolation type diffusion silicon sensitive element or ceramic capacitive pressure sensitive sensor from abroad is used to convert the static pressure into an electrical signal. The diffusion silicon sensitive element or ceramic capacitive pressure sensitive sensor converts the static pressure into an electrical signal, and then converts it into a standard electrical signal through temperature compensation and linear correction.
The integrated temperature transmitter converts this small capacitance change into a standard current (or voltage) output through a balancing circuit, thereby obtaining a current (or voltage) signal output that is linearly related to pressure changes. Output, thus obtaining a current (or voltage) signal that is linearly related to pressure changes. The working principle of inductive transformers is also similar.
working principle
Explosion proof thermocouples utilize the principle of gap explosion-proof. When an explosion occurs inside the chamber, it can be extinguished and cooled through the gap between the joint surfaces, preventing the full temperature of the flame after the explosion from being transmitted outside the chamber, thus achieving explosion-proof.
The thermoelectric potential (resistance) generated by the thermocouple (thermistor) passes through the bridge of the temperature transmitter to generate an unbalanced signal. After amplification, it is converted into a 4-20mA DC electrical signal and sent to the working instrument, which displays the corresponding temperature value.
Measuring range
1) Temperature measurement range and tolerance of thermistor
| model | graduation mark | Measuring range | accuracy class | allowable deviation |
| WZPB | Pt100 | -200℃~+500℃ | A/B level | ±(0.15+0.002t)±(0.30+0.005t) |
| WZCB | Cu50 Cu100 | -50℃~+100℃ | --- | ±(0.30+0.006t) |
2) Thermocouple temperature measurement range and tolerance
| model | graduation mark | Tolerance level | |||
| Ⅰ | Ⅱ | ||||
| tolerance value | Measuring range | tolerance value | Measuring range | ||
| WRNB | K | ±1.5℃ | -40℃~+375℃ | ±2.5℃ | -40℃~+333℃ |
| ±0.004t | 375℃~1000℃ | ±0.0075t | 333℃~1200℃ | ||
| WRMB | N | ±1.5℃ | -40℃~+375℃ | ±2.5℃ | -40℃~+333℃ |
| ±0.004t | 375℃~1000℃ | ±0.0075t | 333℃~1200℃ | ||
| WREB | E | ±1.5℃ | -40℃~+375℃ | ±2.5℃ | -40℃~+333℃ |
| ±0.004t | 375℃~1000℃ | ±0.004t | 333℃~900℃ | ||
| WRFB | J | ±1.5℃ | -40℃~+375℃ | ±2.5℃ | -40℃~+333℃ |
| ±0.004t | 375℃~1000℃ | ±0.004t | 333℃~750℃ | ||
| WRCB | T | ±0.5℃ | -40℃~+125℃ | ±1.5℃ | -40℃~+333℃ |
| ±0.004t | 125℃~350℃ | ±0.0075t | 333℃~350℃ | ||
Characteristic analysis
Simulation Characteristics
● High precision
● Range and zero point can be continuously adjusted externally
● Good stability performance
Positive migration can reach 500%, negative migration can reach 600%
● Two line system
Adjustable damping and overvoltage resistance
Solid state sensor design
No mechanical movable parts, low maintenance volume
● Lightweight (2.4kg)
● Unified structure and strong interchangeability across the entire series
● Miniaturization (166mm total height)
The membrane material that comes into contact with the medium is optional
● Unilateral overpressure resistance
Low pressure cast aluminum alloy shell
Intelligent features:
Super measurement performance, used for pressure, differential pressure, liquid level, and flow measurement
● Digital accuracy:+(-) 0.05%
Simulation accuracy:+(-) 0.75%+(-) 0.1% F.S
● Full performance:+(-) 0.25F.S
Stability: 0.25 months
Range ratio: 100:1
Measurement rate: 0.2S
● Miniature (2.4kg) all stainless steel flange, easy to install
● Process connection is compatible with other products to achieve optimal measurement
The sensor with H-alloy sheath achieves excellent cold and hot stability
Intelligent transmitter using 16 bit computer
Standard 4-20mA, with digital signal based on HART protocol, remote control
● Support upgrades to fieldbus and field control based technologies.
performance metrics
| Category | SBW modular temperature converter | SBW integrated temperature change |
| Accuracy | 0.2%F.S 0.5%F.S | |
| Input | Thermocouples: B, S, T, K, J Thermistors: Pt100, Pt10, Cu100, Cu50 | |
| Output | Two line system 4-20mA DC | |
| Operating temperature | -25-85 ℃ (0-60 ℃ for integrated LCD meter) | |
| temperature effect | ≤0.05%/ ℃ | |
| Humidity | 5-95%RH | |
| On site display | none | 3 1/2LED 3 1/2LCD 0-100% equally divided scale |
| display precision | none | Digital: 0.5 level pointer type: 2.0 level |
| load capacity | <600 Ω (rated load 250 Ω) | |
| Overall dimensions | 44×18 | 70 × 100 (repeater) |
maintenance
Due to its small size, the integrated temperature transmitter has many uses. My own maintenance experience is like this:
Attention to the use of integrated temperature transmitters:
1. Wiring: The wiring of the safety spark circuit (input signal line) must be insulated or shielded wires, and isolated from the wiring of non safety spark circuits to avoid mutual contact.
2. Different models of temperature transmitters should be wired according to the instructions. When wiring explosion-proof instruments with safety spark circuits, they must not be connected incorrectly and carefully checked for short circuits or incorrect connections.
3. When using temperature transmitters, special attention should be paid to the distinction between ordinary and intrinsic safety types. Ordinary types cannot be installed in hazardous areas, while intrinsic safety types can be installed in hazardous areas.
4. The input of the thermal resistance transmitter is a three wire system, and the line resistance of each connecting wire should be equal and within the same ambient temperature.
Maintenance knowledge of integrated temperature transmitter:
1. In principle, it is not allowed to disassemble the components of the safety spark circuit and replace the instrument wiring for explosion-proof instruments. If replacement is necessary, it should be carried out according to explosion-proof requirements.
2. During regular inspections, in order to accurately read data, a digital voltmeter should be connected between the output terminals for measurement, and the safety spark return line should not be removed.
3. After the instrument malfunctions, the power should be cut off for inspection, and power should not be supplied until the fault is detected.
4. The temperature transmitter should be kept clean during operation.
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