Advantages of domestic temperature transmitters

1、 Product Introduction

PT100-4G-25-3000-3 temperature transmitter Widely used in various departments such as metallurgy, petroleum, chemical, power, light industry, textile, food, national defense, and scientific research. It converts signals from thermal resistors, resistive sensors, thermocouples, or voltage sensors into standard signals. The temperature transmitter adopts integrated circuit digital technology to achieve accuracy and signal quality. Each transmitter undergoes ambient temperature characterization at the factory to ensure accuracy and minimal drift over a wide range of operating temperatures. The temperature transmitter is easy to install on site, and can be integrated with the temperature sensor component or installed away from the sensor. The sturdy casing comes with a universal conduit connection port, and the dual chamber aluminum casing ensures the use of the transmitter in hazardous areas.

2、 Product Features

Digital accuracy: 0.2, Pt100 thermistor input

24 bit analog-to-digital converter with ambient temperature compensation, exhibiting outstanding measurement performance across the entire operating range

The matching characteristics between transmitter and sensor are easy to use, which can reduce the interchangeability error of thermal resistance sensors and improve measurement accuracy by up to 75%

The dual chamber structure shell ensures the reliability of the transmitter in high temperature, corrosive, and RF interference environments

Integrated transient protector to prevent damage to the transmitter caused by transient currents introduced by the circuit

Thermal resistance electromotive force correction - detecting and eliminating electromotive force errors. This error is caused by a small voltage signal generated during thermal resistance measurement

Independent parallel alarm circuit, which can provide an independent and backup alarm output in case of circuit board or software failure

Self calibration: By comparing dynamic measurements with highly stable and accurate internal benchmarks, the analog-to-digital conversion circuit automatically performs self calibration for each updated temperature

3、 Advantages of integrated temperature transmitter products

The factory sets the output mode according to user requirements, making installation convenient

Integrated LCD meter head (digital tube, optional without display)

Special sensor input capability allows users to input special sensor parameters into the transmitter and adjust the temperature curve inside the transmitter

The HART protocol transmitter can communicate digitally with HART handheld devices, AMS device management systems, or systems that use the HART protocol

The PROFIBUS-PA bus protocol transmitter can communicate and manage devices with PDM, FDT, AMS equipment management systems

Temperature transmitter SBWZ pt100 0-100 ℃ 24V 4-20mAfeature

1. Two wire output 4-20mA, strong resistance to * *;

2. Save the cost of compensating wires and installing temperature transmitters;

3. Safe and reliable, with a long service life;

4. Automatic compensation for cold end temperature and non-linear correction circuit.

5. Convert the measured environmental temperature into a single standard DC voltage or DC current output in linear proportion;

6. Low power consumption and high reliability;

7. Excellent resistance;

8. Plug and unplug terminal interfaces, standard rail installation;

9. Small size;

Main technical indicators

thermocouple

Allowable deviation of electromotive force

Note: 1) t is the measured temperature (℃)

2) Allowable deviation, take the larger of the two values.

Temperature transmitter SBWZ pt100 0-100 ℃ 24V 4-20mA

platinum resistance thermometer

Accuracy level of platinum thermistor: A or B level

Scale mark: Pt100 Resistance value at 0 ℃: R0=100 ± 0.06 Ω (*)

R0=100 ± 0.12 Ω (Class B)

Allowable deviation Δ t (℃):

Pt100±(0.15+0.002∣t∣)(*)

Pt100 ± (0.30+0.005 ∣ t ∣) (Grade B)

Cu50±0.1%R0

Cu100±0.1%R0

Thermal response time: Т 0.5<90s<>

Transmitter components

Input: Thermistor: Pt100, Cu50, Cu100

Thermocouple: K.E.S.B.T.N

Output: Within the range of measurement, output a 4-20mA DC signal that is linear with the input resistance signal of the thermistor and linear with the millivolt signal input by the thermocouple.

Basic error: Calculation formula Δ=Δ 1+Δ 2

The allowable deviation of Δ 1 thermocouple (resistance) corresponds to the basic output error.

Δ 2 transmitter output basic error Δ 2=± 0.5% FS

Transmission method: two-wire system

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). )

Normal working environment:

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<0.15mm<>

d. There is no medium in the surrounding air that can cause corrosion of the transmitter.

e. Environmental temperature impact: ≤ 0.05%/1 ℃