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Shanghai Automation Instrument Company Jinan Branch
Explosion proof thermistor
NegotiableUpdate on 01/09
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Overview
Explosion proof thermistor is a temperature sensor widely used in chemical industry automation systems. Through temperature sensors, the temperature parameters of the controlled object can be converted into electrical signals, which are transmitted to display instruments, recording and regulating instruments to detect, adjust and control the system.
Product Details
Explosion proof thermistorProduct Details:
The SBW series local security explosion-proof resistor is a field installed temperature transmission unit in the DDZ-S series instruments. It integrates a thermal resistor and a transmitter to directly measure the temperature of liquids, vapors, and vapor media within the range of -200~800 ℃ in various industrial processes. The temperature is converted into a 4-20mADC unified output signal proportional to the temperature or output electrical signal of the thermocouple thermal resistor, which is sent to display, record, regulate instruments or computers. The explosion-proof performance of explosion-proof and intrinsic safety resistance temperature transmitters is designed and manufactured in accordance with the national standard for 'Explosion proof Electrical Equipment for Explosive Environments' (GB3836). The thermoelectric characteristics comply with international IEC standards and have been tested and qualified by the National Instrument Explosion proof Safety Supervision Station. It is an ideal temperature sensor and transmission integrated product for explosive environments, which can be used in hazardous areas with flammable gases or vapors of flammable liquids. The intrinsic safety type thermistor temperature transmitter must be combined with the associated equipment safety barrier to form an explosion-proof system, with explosion-proof certificate numbers: GYB53265, 93266, 97336, 97337. As a new generation temperature transmitter, it can be widely used in metallurgy, petroleum, chemical, power, light industry, textile, food, national defense, and scientific research departments.
The explosion-proof cable distribution parameter control range for intrinsically safe temperature transmitters with thermal resistance is: total inductance ≤ 2mH. Total electrical capacity ≤ 0.06uF. At the same time, associated equipment safety barriers are used, with models MTL728, Z928, LB928, and safety barriers. For specific wiring, please refer to the manufacturer's instructions.
Explosion proof thermistorProduct Features
The transmitter component is miniaturized and placed in a junction box of explosion-proof and intrinsic safety type thermistor to form an integrated temperature transmitter, which is used in industrial sites.
As an integrated temperature transmitter, it can directly output 4-20mA signals in industrial sites, which not only saves expensive compensation wires but also improves the anti-interference ability during long-distance signal transmission.
The transmitter components have high precision, low power consumption, wide temperature range for use, stable and reliable operation, and due to the use of silicone rubber sealing structure, the transmitter is shock resistant, temperature resistant, moisture resistant, and explosion-proof, suitable for installation and use in various harsh on-site environments.
Choose a flameproof temperature transmitter with thermal resistance isolation, which isolates the input and output terminals, increases the ability to resist mode interference, and is more suitable for computer use.
Accuracy level of platinum thermistor: Class B
Division number: Pt100. (resistance value at 0 ℃)
R=1000.12 Ω (Class B)
Allowable deviation: Δ t (℃) ± (0.30+0.005 ∣ t ∣) (Class B)
Input: Thermistor: Pt100
Output: Within the range of measurement, output a 4-20mA DC signal that is linear with the input electrical signal of the thermistor or the millivolt signal input by the thermocouple, and linear with the measured temperature of the thermistor or thermocouple.
Basic error: Calculation formula Δ=Δ 1+Δ 2
Allowable deviation of Δ 1 thermocouple (resistance)
Δ 2 transmitter basic error ± 0.5% FS
Transmission method: two-wire system
Transmitter working power supply: voltage ranging from 12V to 35V, rated working voltage of 24V.
Load: The maximum load resistance is calculated according to the following formula
RL (max)=50 × (Vmin-12) (i.e. the load resistance can be selected within the range of 0-600 Ω at 24V, with a rated load of 250 Ω). )
a. Environmental temperature: -25 ℃ to 80 ℃ (not higher than 70 ℃ in hazardous areas).
b. Relative humidity: 5% to 95%.
c. Mechanical vibration: f ≤ 55Hz, amplitude<0.5mm
d. There is no medium in the surrounding air that can cause corrosion of the transmitter.
Explosion proof grade:
Explosion proof type: d Ⅱ BT4d Ⅱ BT6 or d Ⅱ CT4d Ⅱ CT6
Intrinsic safety type: ib Ⅱ BT4ia Ⅱ BT4ia Ⅱ CT6 (multi pair), associated equipment models MTL728, Z928, LB928.
Shell protection level: IP65
The SBW series local security explosion-proof resistor is a field installed temperature transmission unit in the DDZ-S series instruments. It integrates a thermal resistor and a transmitter to directly measure the temperature of liquids, vapors, and vapor media within the range of -200~800 ℃ in various industrial processes. The temperature is converted into a 4-20mADC unified output signal proportional to the temperature or output electrical signal of the thermocouple thermal resistor, which is sent to display, record, regulate instruments or computers. The explosion-proof performance of explosion-proof and intrinsic safety resistance temperature transmitters is designed and manufactured in accordance with the national standard for 'Explosion proof Electrical Equipment for Explosive Environments' (GB3836). The thermoelectric characteristics comply with international IEC standards and have been tested and qualified by the National Instrument Explosion proof Safety Supervision Station. It is an ideal temperature sensor and transmission integrated product for explosive environments, which can be used in hazardous areas with flammable gases or vapors of flammable liquids. The intrinsic safety type thermistor temperature transmitter must be combined with the associated equipment safety barrier to form an explosion-proof system, with explosion-proof certificate numbers: GYB53265, 93266, 97336, 97337. As a new generation temperature transmitter, it can be widely used in metallurgy, petroleum, chemical, power, light industry, textile, food, national defense, and scientific research departments.
The explosion-proof cable distribution parameter control range for intrinsically safe temperature transmitters with thermal resistance is: total inductance ≤ 2mH. Total electrical capacity ≤ 0.06uF. At the same time, associated equipment safety barriers are used, with models MTL728, Z928, LB928, and safety barriers. For specific wiring, please refer to the manufacturer's instructions.
Explosion proof thermistorProduct Features
The transmitter component is miniaturized and placed in a junction box of explosion-proof and intrinsic safety type thermistor to form an integrated temperature transmitter, which is used in industrial sites.
As an integrated temperature transmitter, it can directly output 4-20mA signals in industrial sites, which not only saves expensive compensation wires but also improves the anti-interference ability during long-distance signal transmission.
The transmitter components have high precision, low power consumption, wide temperature range for use, stable and reliable operation, and due to the use of silicone rubber sealing structure, the transmitter is shock resistant, temperature resistant, moisture resistant, and explosion-proof, suitable for installation and use in various harsh on-site environments.
Choose a flameproof temperature transmitter with thermal resistance isolation, which isolates the input and output terminals, increases the ability to resist mode interference, and is more suitable for computer use.
Accuracy level of platinum thermistor: Class B
Division number: Pt100. (resistance value at 0 ℃)
R=1000.12 Ω (Class B)
Allowable deviation: Δ t (℃) ± (0.30+0.005 ∣ t ∣) (Class B)
Input: Thermistor: Pt100
Output: Within the range of measurement, output a 4-20mA DC signal that is linear with the input electrical signal of the thermistor or the millivolt signal input by the thermocouple, and linear with the measured temperature of the thermistor or thermocouple.
Basic error: Calculation formula Δ=Δ 1+Δ 2
Allowable deviation of Δ 1 thermocouple (resistance)
Δ 2 transmitter basic error ± 0.5% FS
Transmission method: two-wire system
Transmitter working power supply: voltage ranging from 12V to 35V, rated working voltage of 24V.
Load: The maximum load resistance is calculated according to the following formula
RL (max)=50 × (Vmin-12) (i.e. the load resistance can be selected within the range of 0-600 Ω at 24V, with a rated load of 250 Ω). )
a. Environmental temperature: -25 ℃ to 80 ℃ (not higher than 70 ℃ in hazardous areas).
b. Relative humidity: 5% to 95%.
c. Mechanical vibration: f ≤ 55Hz, amplitude<0.5mm
d. There is no medium in the surrounding air that can cause corrosion of the transmitter.
Explosion proof grade:
Explosion proof type: d Ⅱ BT4d Ⅱ BT6 or d Ⅱ CT4d Ⅱ CT6
Intrinsic safety type: ib Ⅱ BT4ia Ⅱ BT4ia Ⅱ CT6 (multi pair), associated equipment models MTL728, Z928, LB928.
Shell protection level: IP65
| S | DDZ-S series electric unit combination instrument |
| B | Transmission unit |
| W | temperature |
| Universal Type (None) | |
| Z thermistor | |
| R thermocouple | |
| Output properties | 2) Output and corresponding temperature |
| 4) The output is linear with the corresponding input signal | |
| sensor | 0) Universal type |
| thermocouple | 0) E nickel chromium copper nickel |
| 1) K nickel chromium nickel silicon | |
| 2) S Platinum Rhodium 10 Platinum | |
| thermal resistor | 1）Cu50 |
| 2）Cu100 | |
| 3）Pt100 | |
| Circuit category | 7) Isolation type (with temperature measuring element) |
| 8) Non isolated type (with temperature measuring element) | |
| Device category | 0) Type |
| 1) Intelligent type | |
| 2) Digital display type | |
| 3) Pointer type | |
| 4) Intelligent digital display type | |
| 5) Intelligent pointer type | |
| 6) Equipped with communication protocol | |
| Installation fixed form | 2) Fixed thread |
| 4) Fixed flange | |
| 6) Fixed thread conical protective tube | |
| 8) Internal thread fixation | |
| 9) Hot sleeve protective tube | |
| Form of junction box | 4) Explosion proof type |
| Design Serial Number | S) Introducing platinum resistors |
| 0) Thermocouple | |
| 1) Insulated (armored) | |
| 2) Shell type (armored) | |
| Number of components | 3) Triple Pair |
| Additional notes | K) Armored type |
| Environmental characteristics | d) Explosion proof type |
| i) Intrinsic safety type |
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