The integrAteD temperAture trAnsmitter conVerts the meAsureD temperAture of A thermocouple or thermAl resistAnce sensor into An electricAl signAl. The signAl is then sent to the input network of the trAnsmitter, which incluDes relAteD circuits such As zeroing AnD thermocouple compensAtion. After zeroing the signAl input to the operAtionAl Amplifier for signAl AmplificAtion, The AmplifieD signAl is output by 4-20 mA DC current After being processeD by V / conVerter, AnD the other one is DisplAyeD by A / D conVerter. There Are two kinDs of lineArizAtion circuit of trAnsmitter, both of which ADopt feeDbAck moDe. The thermAl resistAnce sensor is correcteD by positiVe feeDbAck, AnD the thermAl resistAnce sensor is correcteD by multi-segment broken line ApproximAtion methoD. The integrAteD DigitAl DisplAy temperAture trAnsmitter hAs two DisplAy moDes. The temperAture trAnsmitter of LCD DisplAy is output by two-wire system, AnD the temperAture trAnsmitter of LED DisplAy is output by two-wire system AnD three-wire system.
Main technical parameters > >
1, input signal: thermocouple: K, E, J, B, S, T, N. Thermal resistance: Pt100, Cu100, Cu50(three-wire system, four-wire system). The input signal of the intelligent temperature transmitter can be set arbitrarily by PC or handheld;
2, output signal: Output 4~20mA DC signal in the range, and the thermocouple, thermal resistance input signal is linear or linear with the temperature. The intelligent temperature transmitter outputs 4~20mA DC signals simultaneously superimposed in line with HART standard protocol communication signals; 3, the basic error: 0.5%FS, 0.2%FS, intelligent 0.2%FS;
4, wiring mode: two-wire system, three-wire system;
5, display mode: four-digit LCD display field temperature, intelligent four-digit LCD can be PC
Or handheld Settings to display field temperature, sensor values, output current and percentage
Any of the parameters in the example.
6, load resistance: 5002(24VDC power supply); Limit load resistance Rmax =50(Vmin-12),
For example, when the rated working voltage is 24V, the load resistance can be selected from the range of 0 to 6002. 7. Working voltage: rated working voltage is 24VDC;
8, working environment: a: ambient temperature -25~80℃ (conventional type) b: relative temperature: 5%~95%
25~70℃ (digital display type)
-20~75℃ (Intelligent type)
c: Mechanical vibration f≤50Hz, amplitude ≤0.15mm
d: No corrosive gas or similar environment
