The integration of digital temperature transmitter

Productoverview:
ZW-SBW series The integration of digital temperature transmitter Supporting the use of industrial thermocouple, thermal resistance, using two-wire transmission mode (two wires as a common transmission line power input and output signal). Temperature is the product of modern industrial and Scientific Research Institute of temperature measurement and control updates are essential products distribution system, digital bus system.
Two, work principle:
ZW-SBW series The integration of digital temperature transmitter Is a thermocouple or RTD temperature sensor will be converted into electrical signals, and then enter the network sends the signal to the transmitter, the network including circuit zero and thermocouple compensation. After the signal is amplified to zero after the signal input to the amplifier, amplification of the signal through the V/I converter is calculated after treatment with 4 - 20mA DC current output; the other path through a A/D converter after processing to meter display. Linear transmitter circuit has two kinds, are used in feedback mode. The thermal resistance sensor, with positive feedback correction mode of thermocouple sensor, adjusted by the multi segment approximation method. There are two kinds of display mode. Temperature transmitter LCD display output by the two-wire mode, temperature transmitter LED display output by wire system.
Three, application:
ZW-SBW series The integration of digital temperature transmitter To form an integrated structure with the junction box can be directly installed in thermocouple and thermal resistance in the. It is a new generation instrument can be widely used in metallurgy, petroleum, chemical, electric power, light industry, textile, food, national defense and scientific research and other industrial sectors.
Four, main features:
1, with silicone rubber or epoxy resin sealing structure, so the resistance to vibration and wet, suitable for bad environment installation.
2, on-site installation in thermocouple and thermal resistance of the junction box, the output signal directly to the output of 4-20mA and 0-10mA. This not only saves expensive. The compensation wire cost, but also improve the long-distance signal transmission in the process of anti interference ability;
3, the thermocouple cold end temperature transmitter with automatic compensation function;
4, high precision, low power consumption, using a wide range of ambient temperature, stable and reliable;
5, wide application range, can form an integrated installation structure and thermocouple, thermal resistance, can also be installed as a function module for use in testing equipment and instrument panel;
6, through the HART modem communication with PC or handset and PC machine model, index number, range. Remote information management, configuration, monitoring, calibration and maintenance function variables;
7, according to the actual needs of users to adjust the display direction of transmitter, transmitter and display the measured temperature of the medium, the sensor value changes, the output current and the percentage.
Five, technical parameters:
1, input signal: K, E, thermocouple: J, B, S, T, N. Heat resistance: Pt100, Cu50, Cu100 (three wire, four wire). The input signal of intelligent temperature transmitter through the handset and PC machine set;
2, the output signal output: 4 20mA DC signal in the range, linear or linear with temperature and the input signal thermocouple or rtd. Intelligent temperature transmitter output signal and DC superposition with 4 - 20mA with HART standard communication protocol; isolated temperature transmitter: isolated input and output isolation voltage 500V, increase the ability of anti common mode interference, more suitable for use with computer networking;
3, basic error: 0.5%FS, 0.2%FS, intelligent 0.2%FS;
4 connection: two-wire wire, wire;
5 display: 4 LCD display temperature field, intelligent 4 LCD PC through the handset or set to display the temperature sensor, the output current value, and the percentage of any of the parameters;
6, working voltage: common type 12V-35V, intelligent 12V-45V, rated voltage of 24V
7, allows the load resistance: 500 omega (24VDC power); limit load resistance R (max) =50 (Vmin-12), for example, the rated voltage of 24V, load resistance can be chosen in a range of 0-600.
8, working environment:
A: temperature -25-+80 (conventional type); -25-+70 C (Shu Xianxing); C -25-+75 (intelligent).
Relative humidity: 5%-95% b;
C: f mechanical vibration amplitude is less than or equal to 50Hz, less than 0.15mm;
D: no corrosive gas or similar environment;
9, the environmental impact factor: Delta C = 0.05%/.
Six, check method:
1, equipment requirements: a digital voltage meter;
2, according to the system wiring connection method;
According to 3, indicated on the nameplate and transmitter sensor range, the corresponding input value, the output of 1V and 5V (respectively, the zero point adjustment potentiometer and full potentiometer);
4, according to the amount of 10 points of each process input resistance value, check whether the output precision temperature range;
5, according to the manual technical indicators of the test, should meet the technical requirements.
Seventh, note:
1, used in explosion hazardous areas, please note that the explosion-proof mark and protection grade;
2, the installation environment must be at -20-+70 DEG C, when the ambient temperature is too high, SBWZ/R signal converter and display module with thermal resistance or thermocouple separation installation. Our factory is equipped with separate special explosion-proof box installation transmitter.
3, before power, please carefully check the power of the positive and negative polarity, can not take the wrong, otherwise it may cause unpredictable consequences.
4, SBW signal converter module is sealed by epoxy resin curing, to strengthen its shockproof performance, and moisture proof, corrosion proof.
5, the temperature transmitter used for 6 months after check.

Eighth, measuring range:

Nine, the selection of encoding:

10, Design selection and ordering information:
1, special order specification in the decision of both parties through consultation.
2, according to the needs of users with the corresponding protection tube material. Such as corundum tube or high aluminum protection tube.
3, if you have any special requirements please specify when ordering.
Customer service service commitment:
1, my company sold Zhongwei Temperature transmitter series The product within twelve months of quality problems, responsible for free maintenance.
2, the warranty period if the products of our company have any quality problems, our company is responsible for free repair or replacement.
3, the warranty period if the user use undeserved, cause damage to the product, our company is responsible for the maintenance, collect the damaged parts cost.
4, after the warranty period of product quality problems, our company is responsible for the maintenance, collect the damaged parts cost.
5, if the user needs to our service, our company in the province of the user service personnel arrived at the scene within 12 hours, arrived at the scene 48 hours outside users.