Detail:
1, overview:
SBWR, SBWZ series thermocouple, thermal resistance temperature transmitter is the DDZ series of instruments in the field of temperature transmitter unit, with industrial thermocouple, thermal resistance, it uses a two wire transmission mode (two wires as power input and signal output of the public transmission line). The industrial thermocouple, thermal resistance signal is converted into a linear 0-10mA, 4-20mA output signal with the input signal or the temperature signal.
The temperature transmitter can be directly installed in the junction box of the thermocouple and thermal resistance, and the integrated structure is formed. As a new generation of temperature measurement instrument can be widely used in metallurgy, petroleum, chemical, electric power, light industry, textile, food, national defense and scientific research and other industrial sectors.
2, the main characteristics:
Using silicone rubber or epoxy resin sealing structure, therefore, moisture resistance, suitable for seismic site environment installation.
- the field is installed in the thermocouple, thermal resistance of the junction box, direct output 0-10mA, 4-20mA output signal. This not only saves the expensive cost of the wire, but also improves the anti-interference ability of the signal in the long-distance transmission;
The thermocouple transmitter has the function of automatic compensation for the cold end temperature;
- high precision, low power consumption, wide use of the environment temperature, stable and reliable;
Wide range of application, can be integrated with the formation of the thermocouple, thermal resistance, the formation of the structure, can be used as a function module in the detection equipment and instrument panel;
Intelligent temperature transmitter can communicate with the host computer through the HART modem or with a handheld device and a PC machine to carry out the remote information management, configuration, variable monitoring, calibration and maintenance functions of the transmitter model, indexing number and range;
The intelligent temperature transmitter can adjust the display direction of the transmitter according to the actual needs of the user, and display the change of the medium temperature, sensor value, output current and percentage of the transmitter;
3, working principle:
The thermocouple or the heat resistance sensor will be measured to convert into electrical signals, and then the signal is fed into the input network, which contains the relevant circuits such as zero sum and thermocouple compensation. The zero after the signal is fed to the input of the operational amplifier for signal amplification, amplification of the signal path through a V / I conversion after calculation and processing to 4 - 20mA DC current output; other path through a A / D converter after treatment to meter display. There are two kinds of linear circuits in the transmitter, and the feedback is used. On the thermal resistance sensor, a positive feedback method is used to calibrate the thermocouple sensor, and the multi segment line approximation method is used to correct the method. Integrated digital display temperature transmitter has two ways of display. LCD display temperature transmitter with the two line system, the LED display of the temperature transmitter three line method of output.
4, technical parameters
1, input signal: thermocouple: K, E, J, B, S, N, T. Thermal resistance: Pt100, Cu50, Cu100 (three wire, four wire). The input signal of the intelligent temperature transmitter can be set up by the handset and the PC machine;
2, output signal: in the range of output 4 - 20mA DC signal, with the thermocouple or thermal resistance of the input signal into linear or linear with temperature. Intelligent temperature transmitter output 4 to 20 mA DC signal and overlaps with HART protocol standard for communications; temperature transmitter isolation: input and output isolation, isolation voltage of 500V, an increase of common mode interference resistance capability, more suitable for use with computer networking;
3, the basic error: 0.5%FS, 0.2%FS, intelligent 0.2%FS;
4, connection mode: second line, three line, four line system;
5, display mode: four LCD display the site temperature, four intelligent LCD can pass PC or handheld
Is set to display the field temperature, sensor, output current, and the percentage of any one of the parameters;
6, working voltage: general model 12V-35V, intelligent 12V-45V, rated working voltage of 24V
7, allowing the load resistance: 500 (24VDC); R (max) =50 (Vmin-12), for example, in the rated working voltage of 24V, load resistance can be used in the range of 0-600.
8, working environment: a: environment temperature -25-+80 (conventional)
-25-+70 (Shu Xianxing)
-25-+75 (intelligent)
B: relative humidity: 5%-95%
C: f mechanical vibration amplitude is less than or equal to 50Hz, less than 0.15mm
D: no corrosive gas or similar environment;
9, environmental impact coefficient: Delta C = 0.05%/.
5, temperature measurement range
Class of different material quality measurement range
Heat
Electric
I
Nichrome constantan E 0-1000 temperature range of optional
Nickel chromium nickel silicon K 0-1300 temperature range of optional
10- platinum and Rhodium Platinum S within the range of 0-1600 DEG C optionally
30- B platinum rhodium 6 within the range of 0-1800 DEG C optionally
Copper constantan T 0-400 temperature range of optional
Iron constantan J 0-1200 temperature range of optional
Heat
Electric
Resistance
Copper thermal resistance -50-+150 Cu50 range of optional
Copper thermal resistance -50-+15 Cu100 range of optional
Platinum thermal resistance, -200-+600 Pt100, the range of choice
6, model code and description:
Type number said
SBW temperature transmitter
Category R thermocouple
Z thermal resistance
Sensor 1 suitable for K type thermocouple / thermal resistance matching Pt100
2 suitable for E type thermocouple / Cu100
3 suitable for J type thermocouple / Cu50
4 suitable for B type thermocouple
5 suitable for S type thermocouple
6 suitable for T type thermocouple
7 suitable for N type thermocouple
8 user set
Circuit type 0 isolation
1 non isolated type
Installation method 0 general type
1 special type
2 hanging wall type
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