Thermocouple or thermal resistance transforms tested temperature into electric signal and sends the signal into transmitter input network which includes concerned circuits with zero setting and thermocouple compensation. After zero setting,the signal is input into calculation amplifier for signal amplification.The amplified signal is processed through V/I switch with output of D.C. 4~20mA on one path, and processed through A/D switch and displayed on instrument head on another path. There are two kinds of linear circuits of feedback way. Direct feedback rectification is for thermal resistance, and multi broken line approach rectification is for thermocouple. There are two kinds of display for integral digital display temperature transmitter, 2-wire system output for LCD, and 3-wire system output for LED.

SBW Series Temperature Transmitter Technical Parameters

1.Input Signal: Thermocouple: Thermal Resistance: (3 wire system, 4 wire system)Input signal of intellectual temperature transmitter could be freely set with PC or handle device.
2.Output Signal: D.C. 4~20mA signal output within measuring range in linear relation with input signal of thermocouple, thermal resistance or with temperature; Intellectual Temperature Transmitter Output: D.C. 4~20mA signal plus communication signal based on HART agreement;Input is separated from output for separation type temperature transmitter and separation voltage is 0.5KV. It improves common
mode interference-resisting performance and is more suitable with usage for computer network.
3. Basic Error: 0.5%FS 0.2%FS Intellectual Type 0.2%FS
4.Wiring: 2-wire system, 3-wire system, 4-wire system
5.Display: 4 digits LCD of temperature on the spot; The user may set 4 digits LCD of intellectual transmitter with PC or handle device to make it display on the spot any parameter of temperature, sensor value, output current or percentage.
6.Operation Voltage: Common Type12V 35V, Intellectual Type2V 45V, Rated Operation Voltage24V
7.Loading Resistance Allowed: 500 (24V D.C. Power Supply); Loading Resistance max =50(Vmin-12),If it works under rated operation voltage 24V, loading resistance could beselected from 0 to 600°c.
8. Operation Environment:
a. Environment Temperature -25-80°C(General Type)；-25-70°C(Digital Display Type)；-20-75°C(Intellectual Type)
b. Relative Humidity: 5%-95%
c. Mechanical Shockf 50Hz; Amplitude 0.15mm
d. Without corrosive gas or similar environment

SBW Series Temperature Transmitter Type Code & Description

Order on that of special specification depends on both agreements.We may provide protection tube of other material including,corundum and high Al content as user s demand,Please indicate it in ordering if the user has other special demand.

Ambient Temperature: 20 ~70°c ;