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Heat Meter Temperature Sensors

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Your professional Thermocouples & Rtds Manufacturer In China

Chongqing Duchin Instrument CO., LTD is a leading supplier in the manufacturing of thermocouples and rtd sensors in China.We've been dedicating to the temperature sensors industry for 29 years so far. And now, we possess more than 30 industry leading patents and products.

High Quality

With almost 29 years of industry experience, we are the experts in the field of manufacturing and calibration of temperature sensors,getting certificated by IS0 9001 Quality Management System and ISO 14001 Environmental Management System,with EX NEPSI,CE and SIL2 Certifications.

Professional Team

Duchin is working on process improvement, hiring the right employees and putting them through a series of training stages properly, and keying on communicating customer’s needs to ensure its goal of a 100% Quality Rating and Satisfaction is not missed out.

Cost Effective

Duchin not only has extensive product line and support to help our customers improve the quality of their products, but also with stable materials resources to ensure favorable prices with high quality.

Excellent service

Duchin wins trust and receives a great reputation from clients by offering high-quality products and superb 24-hour service. We also provide shock-proof packaging to ensure the product is in good condition.

 

 

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What is a Rtd?

A Resistance Temperature Detector (RTD) is a device with a significant temperature coefficient (that is, its resistance varies with temperature). It is used as a temperature measurement device, usually by passing a low-level current through it and measuring the voltage drop. A thermistor is a common type of RTD.

 

 

Types of heat meter sensors

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Type DS heat meter RTD temperature probes are used for temperature measurement in closed-loop pipe system, and should be installed in DN15,DN20,DN25 pipe system. The temperature probes are available paired and calibrated. It’s commonly use type.

 
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Type DL heat meter RTD temperature probes are used for the main hot water tube of building, with G1/2 fixed thread process connection. Always with water-proof head or wire leading, should be installed in DN32~DN250 pipe system.

 
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Type PL heat meter RTD temperature probes are used for the main hot water tube of building, with thermowell and G1/2 fixed thread process connection. Should be installed in DN65~DN250 pipe system.

 

 

Technical datas of Heat Meter Sensors

 

Sensor element(Heraeus)

Pt100,PT500,Pt1000

Accuracy

Class A、Class B

RTD probe

Ø5、Ø6；SUS304

Connection cable

PVC 85℃，PUR 105℃，Silicone 150℃，PTFE 250℃

 

2-wire,3-wire,4-wire

 

Wire end ferrules

Cable cross-section

0.22mm²，0.34mm²，0.50mm²

Cable Termination

Tin-plated wires，Terminal cap

Process connection

Pipe thread,Copper M10x1

Length of cable

1500mm(standard),as per client’s demand

Fitting length

45 to 85 mm,27.5(45)mm be standard

Temperature

0 to 150℃

Temperature difference

△Tmin ≤3℃

 

≤0.1℃ within one pair

Insulation resistance

≥100MΩ under normal condition

Protection class

IP54

Ambient conditions

0 to 70℃

 

Our Certificates

 

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Business License
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Certificate of High-tech Enterprise
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Certificate of “SRDI”
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Director of China Instruments Manufacturers Association
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Member Of China Photovoltaic Industry Association (CPIA)
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Recommend Supplier Of China Heat Treatment Association(CHTA)
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Certificate of National Torch Program Items
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Certificate Of Work Safety Standardization
productcate-800-1159
Intellectual Property Management System Certification
FAQ
 

Q: What is a heat meter used for?

A: What is a heat meter? A heat meter measures the energy you use to heat your home and hot water.

Q: What are the components of a heat meter?

A: Heat meters are made up of three components: the flow meter, the temperature sensors, and the calculator. Temperature measurement is generally carried out using platinum resistance thermometers (PRTs) which offer excellent accuracy over a wide temperature range (from –200 to +850 °C).

Q: What is the use of heat meter?

A: A heat meter, on the other hand, is a device used to measure the amount of heat energy used by a heating system. It is typically used in multi-unit buildings to measure the heat consumption of individual units.

Q: How does a heat meter sensor work?

A: The heat meter temperature sensor is one of the key components of the heat meter and is used to measure the temperature deviation of water before and after it passes through the heat meter.

Q: What types of sensors could be heat meter sensors?

A: The regularly heat meter sensors could be pt100,pt500 and pt1000 sensors.

Q: What the features of heat meter sensors?

A: It has very restricted requirements for measuring accuracy and thermal response time. Two temperature sensors installed at the start and end of the heater must be calibrated for each other before installation, and their relative error should be less than 0.1℃.

Q: What is a Pt1000 temperature sensor?

A: Pt1000 sensors are part of the group of temperature sensors called Resistance Temperature Detectors or RTDs for short. They use the principle of changing electrical resistance with changing temperature for the measurement of temperature.

Q: What is the resistance of a Pt1000 sensor?

A: While both PT100 and PT1000 sensors utilise platinum as the sensing element, their nominal resistances differ significantly. A PT100 sensor has a nominal resistance of 100 ohms at 0°C, whereas a PT1000 sensor has a nominal resistance of 1000 ohms at the same temperature.

Q: What is PT500 sensor?

A: Pt500 RTD sensors are a rare type of platinum resistance thermometer. Pt refers to that the sensor is made from Platinum (Pt). 500 refers to that at 0°C sensor has a resistance of 500 ohms (Ω). See definition: Resistance thermometer.

Q: What is the principle of RTD?

A: RTD(Resistance Temperature Detector) work on the principle of resistance, which happens uniformly with changes in temperature.RTD is a sensor whose resistance changes as its temperature changes.An RTD is a passive device.

Q: How does heat meter sensors mount for DN15、DN20、DN25 pipes?

A: Household heat meter temperature sensor, directly inserted into hot water pipes. For mounting, it is equipped with sliding external threads (M10×1) and has fixed lead wires for termination. It is suitable for small hot water pipes such as DN15, DN20, and DN25. Standard lengths are 27.5, 85 (105), 120 (140), 210 (230) mm, etc.

Q: How does heat meter sensors mount for DN32~DN250 pipes?

A: Suitable for use in the main hot water pipe of building units, it is directly inserted into the hot water pipe. For mounting, It is equipped with a G1/2 fixed thread and has a terminal enclosure or fixed lead wires for termination, suitable for DN32~DN250 hot water pipes.

Q: How does heat meter sensors mount for DN65~DN250 pipes?

A: Suitable for use in the main hot water pipe of communities. The heat meter comes with a protective tube equipped with G1/2 fixed thread, thus when it is time to replace, the user only needs to unfix the inner temperature sensor and slide it out to replace it, there is no need to drain the main pipe. It is suitable for DN65~DN250 hot water pipes.

Q: What are the consists of heat meter sensors?

A: The heat meter temperature sensor consists of five components: temperature sensing element, thermal conductor, protective sheath, mounting thread, and lead wires.

Q: What’s are the generally requirements for heat meter sensors?

A: It generally uses Pt1000, tolerance level B, pairing accuracy less than 0.06℃. It stands out with high accuracy, fast thermal response, and stable performance.

Q: Are the heat meters used in pair?

A: Yes. Two temperature sensors installed at the start and end of the heater must be calibrated for each other before installation, and their relative error should be less than 0.1℃.We could ensure the relative error less than 0.06℃.

Q: What’s the production capacity for heat meter sensors?

A: The normally production quantity could be 500pairs per day.

Q: How to test the heat meter sensors?

A: Using water bath auto testing system,100% tested.

Q: What’s consists of the heat meter sensors?

A: The rtd elements,the insulation material,the protection tube,the thread and leads wire.

Q: It’s a customized sensor or basic sensors?

A: For most occasions,we could choose basic heat meter sensors.But it’s also can be customized for special requirements.

 

As one of the leading heat meter temperature sensors manufacturers in China, we warmly welcome you to buy heat meter temperature sensors made in China here from our factory. All customized products are with high quality and competitive price.