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| Model | HMWR/HKWZ |
|---|
Thermocouple and thermal resistance products with integrated structure with temperature detection and transmission functions.
It can directly measure the temperature of liquid, gas, or steam media. It accepts input signals from thermocouples and thermal resistors with standard graduation numbers,generates (4~20) mA DC output signals that are linear with the measured temperature, and is compatible with the computer system (compatible with the HART protocol) to achieve detection and control of various temperatures.
It can be widely used in industrial departments and scientific research fields such as power, metallurgy, petroleum, chemical industry, aviation, machinery, light industry, textile, medicine, food, national defense, etc. Supporting manufacturing. The product is widely used in various industries such as industry, agriculture, and scientific research.
STANDARD PARAMETERS
1. Input signal: Thermocouple: B, S, K, E, J, T. Thermal resistance: Pt100, Pt1000, Cu50.
2. Output signal: Outputs a (4~20) mA DC signa is linear relation with temperature within the measurement range, optional equipped with the HART protocol. 3. Basic accuracy: thermocouple temperature transmitter+0.5% F · S; Thermal resistance temperature transmitter+0.2% F · S;
4. Transmission method: two-wire system.
5. DC power supply: (12~30) VDC rated voltage 24VDC.
6. Load impedance: The maximum load resistance is calculated using the following formula: RL (max)=50 (U-12), where U is the DC power supply voltage of the transmitter. At rated voltage 24V: RL (max)=50(24-12) = 600 Ω
7. Normal working environment:
a. Environmental temperature: (-25~85) °C (special requirement is -40~90 °C)
b. Relative humidity: 5% 95%
c. Mechanical vibration: (10~150) Hz, A=0.15mm
d. The surrounding air does not contain any medium that can cause transmitter corrosion.
8. Electromagnetic interference: there are + 0.15% F · S when a radio transmitter is working with a power of 20~1000MHz and 5W at a distance of 0.5 meters away from the transmitter.
9. Temperature drift: For every 1 °C change in ambient temperature, the zero point change is ± 0.15% F · S, and range conversion is+0.1% F · S.
