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> TRANSMITERS & CONVERTERS > VT-IB and VT-IR
 

Microprocessor Based Isolated Temperature Transmitter
   

Microprocessor Based Isolated Temperature Transmitter
 
   

Feature:
VT-IB (for head mounting) and VT-IR (for DIN rail mounting)    are two-wire signal conditioning devices that deliver 1500Vac    isolation between input and output.
These devices can be fully programmed by the end user for    different industrial applications.
One single model can be configured to accept several    thermocouple types and Pt100 RTDs.
VT-IR can also accept 0 to 50 mV and 4-20mA field signals.
   The flexibility of in-the-field configuration translates into a one    model fits all signal conditioning and isolator module.
Manual zero (offset) adjustment can be done by means of a    wire jumper simulating a keyboard for the VT-IB or with 2 front    keys in the VT-IR.
Cold junction compensation for thermocouples.
Sensor failure protection: programmable burnout upscale or    downscale.

 
 
Configuration:
Configuration is achieved by means of an interface cable    connected to a RS232 PC port along with the convenient    configurator software TxConfig.
Through this convenient software, the end user can easily    configure the input type, the desired working range and    the necessary upscale or downscale protections.
Minor sensor error corrections can also be made whenever    necessary.
   
   
Specification:
   
 
Programmable input: thermocouples type J, K, T, E, N, R, S, B, Pt100 RTD,
and(VT-IR) 0-50mV
User programmable working range
2-wire loop powered 4-20mA or 20-4mA output
2 or 3-wire Pt100 input with linearized output
Power supply: 18 to 32Vdc
Accuracy: Pt100 and 0 to 50mV ±0.15% of full scale
Thermocouples ± 0.25% of full scale ± 1°C
Temperature effect: 0.003% of maximum SPAN/°C
Working temperature: -40 to +85°C (-40 to 185°F)
Humidity: 0-90% RH
Electromagnetic compatibility: EN50081-2, EN50082-2
Isolation between the sensor and the 4-20 mA loop.(1000V/ 1min)
Internal protection against polarity inversion.
Dimensions: VT-IB: 44mm (Diam.) x 25mm (H including bornes). Screw fix.
Centers : 33 to 40mm
VT-IR: 72mm (H) x 78mm (D) x 19mm (W)
Isolation: 1500Vac between sensor input and 4-20mA output loop
Selectable mains filter: 60Hz or 50Hz.
Response Time: ?500 ms
 
INPUT
 MAX. RANGE
 MIN. SPAN
Thermocouple K
-150 to 1370°C / -238 to 2500°F
100°C
Thermocouple J
-100 to 760°C / -148 to 1400°F
100°C
Thermocouple R
-50 to 1760°C / -58 to 3200°F
400°C
Thermocouple S
-50 to 1760°C / -58 to 3200°F
400°C
Thermocouple T
-160 to 400°C / -256 to 752°F
100°C
Thermocouple N
-270 to 1300°C / 454 to 2372°F
100°C
ThermocoupleE
-90 to 720°C / -130 to 1328°F
100°C
ThermocoupleB
500 to 1820°C / 932 to 3308°F
400°C
Pt100
-200 to 600°C / -328 to 1112°F
40°C
Voltage
0 to 50mV
5mV
 
 
PC Configurator :
 
 
 
Dimension:
 
 
 
Electrical Connections:
 
 
 
Ordering Information:
 
  VT-IB- __________ -RANGE
VT-IR- -RANGE
 INPUT
 CODE
 MAX. RANGE
 MIN. SPAN
Thermocouple K
K
-150 to 1370°C / -238 to 2500°F
100°C
Thermocouple J
J
-100 to 760°C / -148 to 1400°F
100°C
Thermocouple R
R
-50 to 1760°C / -58 to 3200°F
400°C
Thermocouple S
S
-50 to 1760°C / -58 to 3200°F
400°C
Thermocouple T
T
-160 to 400°C / -256 to 752°F
100°C
Thermocouple N
N
-270 to 1300°C / 454 to 2372°F
100°C
ThermocoupleE
E
-90 to 720°C / -130 to 1328°F
100°C
ThermocoupleB
B
500 to 1820°C / 932 to 3308°F
400°C
Pt100
D
-200 to 600°C / -328 to 1112°F
40°C
Voltage
V
0 to 50mV
5mV
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