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Hanzhong Quan Yuan Electronic Co., Ltd.

Temperature Sensor, Explosion-Proof Temperature Sensor, PT100 Sensor manufacturer / supplier in China, offering QT-B108 Explosion-Proof Temperature Sensor, 150 Nm Rotary Torque Sensor, Big Face Digital Pressure Gauge and so on.

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Supplier Homepage Product Pressure Measurement Pressure transmitter QT-B108 Explosion-Proof Temperature Sensor

QT-B108 Explosion-Proof Temperature Sensor

FOB Price: US $125 / Piece
Min. Order: 10 Pieces
Min. Order FOB Price
10 Pieces US $125/ Piece
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Port: Xian, China
Production Capacity: 1000000
Payment Terms: T/T, Western Union, Paypal

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Basic Info
  • Model NO.: QT-B108
  • Structure Type: Temperature Pressure Transmitter
  • Accuracy Grade: 0.5G
  • IP Rating: IP68
  • Customized: Customized
  • Trademark: QYE
  • Specification: High-precision
  • HS Code: 9026201090
  • Type: Medium & High Temperature Pressure Transmitter
  • Measuring Medium: Gas
  • Pressure range: 0.001MPa~35MPa
  • Certification: ISO
  • Output Signal: 4-20mA
  • Transport Package: Carton
  • Origin: Hanzhong
Product Description

1. General Introduction

QT-B108 Series adopt two-wire way for transmit (power and output signal transmit in two common wires), it outputs the linear current signal of 4-20mA with the measuring temperature. As a new generation of measuring instrument, it can be extensively applied in many industrial and scientific research fields, such as petroleum, chemical industry, spinning, metallurgy, electric, electric power, aviation, food processing, medical engineering and so on, to carry out automated temperature measurement, transfer and control.

QT-B108 series explosion-proof integrated temperature transmitter has already been confirmed by National Supervision and Inspection Center for Explosion Protection and Safety of Instrumentation (NEPSI), and it is in accord with the requirements in GB3836.1-2000,GB3836.2-2000 standard.

QT-B108 series explosion-proof integrated thermocouple temperature transmitter and SBWZ series of explosion-proof integrated thermal resistance temperature transmitter have the following outstanding merits:

(1)   Wideness of operating ambient temperature: -20°C~+85°C;

(2)   High precision cold junction compensating circuit, and the absolute error in the whole temperature is ±0.5°C(S thermocouple ±0.8°C);

(3)   With progressive nonlinear correction circuit; output signal and measured temperature are linear relationship.

(4)   Within drifting self-correct system, so the measuring precision under the whole working temperature can be ensured.

(5)   Anti-corrosion, well antiknock characteristic and high reliability;

(6)   Wide range of application: it can be widely used in industrial and scientific research fields to carry out automated temperature measurement, transfer and control.

(7)   The unique anti-jamming circuit design can ensure the transmitter work safely and reliably under all kinds of disturbance; especially the anti-electromagnetic interference cell is suited for modern serious electromagnetic polluted environment.


2. Operating Principle 

QT-B108 series explosion-proof integrated temperature transmitter consists of explosion-proof temperature sensor, temperature transmitter module and explosion-proof junction box. It has the function such as linear correction, reverse protection for power supply. For the transmitter using thermocouple as temperature measurer, it also includes cold junction compensation circuit.


3. Main Technical Parameters

1. Fundamental error: ±0.5%;

2. Influence of environment temperature variation: 0.05%FS/°C;

3. Output signal:4~20mA; Two-wire system transmission;

4. Load resistance: 0~600Ω;

5. Power supply:24VDC;

6. Work environment: environment temperature: -25~+85°C;

7. Explosion-proof grade:ExdII CT1~CT6;


4. Measuring Range

temperature measurer

division number

measuring range °C



0~600 0~800 0~1000 0~1300

200~600   400~800   600~1000



0~200 0~400 0~600 200~1000

nickel-chromium - constantan


0~400 0~600 0~800

200~600 200~800   400~800

copper- constantan


0~200 0~300 -100~0 -200~0

platinum-rhodium 10 - platinum


0~1400 0~1600 600~1400 600~1600

platinum-rhodium 30 - platinum 6


0~1400 0~1600 600~1400 800~1600

platinum-rhodium 30 - platinum


0~1300 0~1600 600~1600

copper resistor


0~50   0~100   0~150   -50~50

copper resistor


0~50   0~100   0~150   -50~50




0~50   0~100   0~150 0~200 0~300

0~400 0~500   0~600

-200~0 -100~0   -50~50


Remarks: Except the specifications above, other specifications can be ordered to produce.


5. Shape and Wiring Diagram

QT-B108 Explosion-Proof Temperature Sensor


 6. Matters Need Attention While Installing and Using SBW Series of Explosion-proof Integrated Temperature Transmitter

    QT-B108 series of integrated temperature transmitter has already been confirmed by National Supervision and Inspection Center for Explosion Protection and Safety of Instrumentation (NEPSI), and it is in accord with the requirements in GB3836.1-2010 and GB3836.2-2010 standard. The matters below must be followed while using this product:

1. Relationship between temperature grade and the max. medium temperature:


various groups of temperature

the max. medium temperature(°C)














2. Using environment temperature:-20°C~+60°C.

3. Follow the principle of "power off before open the lid" when use the produce on site.

4. No harmful gas that has corrosive effect to aluminum alloy on site.

5. The outside diameter of lead-in cable must be φ8mm~8.5mmφ.
   6. The shell of product is equipped with ground terminal, so you can ground connection while installing the product.

7. Do not change any accessory of this product by yourself, you must ask for the manufacturer to solve the trouble emerging in service, to completely eradicate the appearance of damage.

8. While installing, using and maintaining this product, you must follow the operation instruction, part 13 in GB3836.13-1997 "Electrical Equipment Used in Explosive Gas Atmosphere: Inspection and Repair for Electrical Equipment Used in Explosive Gas Atmosphere", part 15 in 93836.15-2000 "Electrical Equipment Used in Explosive Gas Atmosphere: Electrical Installation in Dangerous Place (except colliery)", part 16 in GB3836.16-2006 "Electrical Equipment Used in Explosive Gas Atmosphere: Checking and Maintenance for Electrical Device (except colliery)" and relevant regulations in GB50257-1996 "Electrical Equipment Installation Engineering Code for Construction and Acceptance of Electric Device within Explosion and Fire Hazard Atmospheres"

7. Complete Set

The followings attach each product:

  1. certification
  2. operation instruction

8. Others

1. Ordering instruction: when you order the product according to your demand, please indicate type of temperature transmitter and range of measuring temperature you will use.

2. Under the condition that you observe the product's storage, installation and use regulations, within 12 months from the shipment date (special requirement product except), if the product is damaged caused by manufacturing quality or can work normally, we will provide you free service. If the damage is caused by your improper storage, installation and use, you must pay the repair cost by yourself.


Packaging & Shipping


All products can be shipped by International Express including EMS,UPS,FedEx,DHL and TNTas you required. By plane or by ship is available, too. The detailed can be discussed with our sales.We will choose the safe and cheapest way for you to reduce your cost. 


All products will be well packed in hard paper box properly and security. Packing list will be enclosed inside the box. Please take care of this when you unpack the package.


Our Services


1. OEM/ODM Services:

Our company provides OEM/ODM services and Customized products services. 

With know-how technique and mass production capability, we are able to provide the specified sensing solution according to customer's application. 

What's your requirement? 

2. Quality Quarantee

We quarantee product quality for one-year starting from the date of delivery. 


Company Information

  Marketing under Our Brand "QYE"
Hanzhong Quan Yuan Electronic Co. Ltd is a professional high-tech enterprise that is committed to the research, development, design, manufacture and sale of load cells, high precision resistance strain gauges and pressure transmitters under the QuanYuan brand. They can be applied in the traditional force measurement field and are also widely used in the industrial automation production lines and metallurgical industry.

Meeting CE, RoHS and EX Requirements
As an ISO 9001:2008-certified company,all our electronic products have good performance and high quality because all products must be tested several times and they must undergo strict inspections before being dispatched from the factory. As a result, our load cells have passed CE and RoHS requirements and pressure transmitters have passed CE and EX standards.

Service Concept: Customer Satisfaction is Our Everlasting Pursuit
With several years' experience in manufacturing and selling load cells, strain gauges and pressure transmitters, we always adhere to our service concept of "customer satisfaction is our everlasting pursuit" and have built a professional team in sensor field to provide customers with first-class products, first-class services, first-class reputation and first-class principles.

Exporting to over 30 Countries Worldwide
With high quality and good service, our products have been exported to over 30 countries, which include the US as well as those in Europe, Southeast Asia, the Middle East and South America.

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Ms. Yu Chen
sales engineer
To: Ms. Yu Chen

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