Temperature Transmitter
Storage,Storage Cabinet,Multifunctional Storage Cabinet,Tv Cabinet Mexarts Household Products Co., Ltd. , https://www.mexartsglobal.com
July 28 14:05:06, 2024
I. Overview:
SBWR thermocouple temperature transmitter and SBWZ thermal resistance temperature transmitter are field-mounted temperature transmitter units in DDZ-S series instruments. It uses a two-wire transmission method (two wires as a common transmission line for power input and signal output). Transform the thermocouple and thermal resistance signals into an output signal of 4-20mA linear with the input electrical signal or measured temperature. The transmitter can be installed in the junction box of the thermocouple and thermal resistance to form an integrated structure. As a new generation of temperature measuring instrument, it can be widely used in industrial sectors such as metallurgy, petrochemical industry, electric power, light industry, textile, food, national defense and scientific research.
2. Features of temperature transmitter
1. Adopt epoxy resin sealing structure, so it is shockproof and temperature resistant, suitable for installation and use in harsh field environment.
2. It is installed in the junction box of the thermal resistance and thermocouple on site, and directly outputs 4 ~ 20mA, which not only saves the cost of the expensive compensation wire, but also improves the anti-interference ability during the long-distance signal transmission.
3. High precision, low power consumption, wide operating temperature range, stable and reliable operation.
4. The range is adjustable, and has the function of linearization correction, and the thermocouple temperature transmitter has the automatic compensation function of the cold junction.
It has a wide range of applications. It can form an integrated field installation structure with thermocouples and thermal resistances, and can also be installed as a functional module in the testing equipment.
3. Main technical indicators:
1 input: thermal resistance Pt100, Cu50, Cu100
Thermocouple K, E, S, B, T, J, N
2. Output: output 4 ~ 20mA DC signal within the range of measurement range can be linear with the output resistance signal of the thermal resistance thermometer, linear with the input temperature signal of the thermal resistance thermometer; linear with the millivolt signal input by the thermocouple, It can also be linear with the input temperature signal of the thermocouple thermometer.
3. Basic error: ± 0.2%, ± 0.5%
4. Transmission method: two-wire system
5. Transmitter working power supply voltage is minimum 12V, maximum 35V, rated working voltage 24V.
6. Load: The limit load resistance is calculated as follows
RL （max） = 50 × （Vmm-12）
(That is, the load resistance can be selected within the range of 0 ~ 600Ω at 24V) The rated load is 250Ω.
Note: Transmitter with adjustable range, the zero point and full scale need to be adjusted repeatedly when changing the range; the galvanic transmitter must be warmed up for 30 minutes before commissioning.
1. Influence of ambient temperature ≤0.05% 1 ℃
2. Normal working environment:
a. Ambient temperature -25 ℃ ~ + 80 ℃
b. Relative humidity 5% ~ 95%
c. Mechanical vibration f≤55Hz amplitude <0.15mm.