Thermistor temperature transmitter
If the SBW thermistor temperature transmitter is c
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Description
If the SBW thermistor temperature transmitter is composed of two sensors used to measure the temperature difference, there is a given continuous function relationship between the output signal and the temperature difference. It is called the temperature transmitter.
There is a given continuous function relationship between the transmitter output signal and the temperature variable (usually linear function). The output signal of the early production has a linear relationship between the output signal and the resistance value (or voltage value) of the temperature sensor.
The standardized output signals are mainly DC signals of 0mA~10mA and 4mA~20mA (or 1V~5V). Other standardized output signals with special regulations are not excluded. The temperature transmitter can be divided into two wire system and four wire system according to the power supply connection mode. Besides the RWB type temperature transmitter, the temperature transmitter is three wire system.
The transmitter has DDZ- (type II, DDZ- III and DDZ-S) and mini modular, multi-functional intelligent type. The former has no sensors, and the latter two types of transmitters can be conveniently coupled with thermocouples or thermal resistors to form transducers with sensors.
Working principle
The SBW thermistor temperature transmitter is an instrument that converts temperature variables into a standardized output signal that can be transmitted. It is mainly used for measurement and control of industrial process temperature parameters. Transducers with sensors are usually made up of two parts: sensors and signal converters. Sensors are mainly thermocouples or thermal resistors; signal converters are mainly composed of measuring units, signal processing and conversion units (because the industrial thermal resistance and thermocouple dividing tables are standardized, so the signal converters are also called transmitters as independent products). Some transducers have added display units, and some have field bus functions.
Product characteristics
The thermistor temperature transmitter can be directly installed in the junction box of the sensor. It has the advantages of accurate signal, long distance transmission (large 1000M), high precision, anti-interference, long term stability and maintenance free. This series of products has been widely used in various fields of industrial control. A device that converts physical measurement signals or ordinary electrical signals into standard electrical signals or outputs them in a communication protocol. The temperature transmitter is an instrument that converts temperature variables into a standardized output signal that can be transmitted. It is mainly used for measuring and controlling the temperature parameters of industrial processes. The current transmitter converts the alternating current of the measured main loop into a constant current ring standard signal, and continuously transfers it to the receiving device.
technical parameter
| category | SBW module temperature change | SBW integrated temperature change |
| Accuracy | 0.2%F.S 0.5%F.S | |
| input | Thermocouple: B, S, T, K, J Thermal resistance: Pt100, Pt10, Cu100, Cu50 | |
| output | Two wire 4-20mA DC | |
| Service temperature | -25-85 C (integrated LCD meter at 0-60 C) | |
| Temperature effect | Less than 0.05%/ degrees C | |
| humidity | 5-95%RH | |
| Field display | nothing | 3 1/2LED 3 1/2LCD 0-100% equal scale |
| Display accuracy | nothing | Digital: 0.5 level pointer: 2 level. |
| Load capacity | < 600 ohm (rated load 250 Ohm) | |
| Outline size | 44 x 18 | 70 x 100 (repeater) |
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