Calog TW4-ISO

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4-Wire isolated univeral transmitter User powered 4-wire transmitter, 4-20mA or 0-10V output. DIN rail mount. Accepts current, voltage, thermocouple, RTD and potentiometer input. Features hassle-free USB programming.

This versatile 4-wire transmitter accepts a wide range of standard input types, and features a user-selectable current or voltage output. USB programming is hassle free – it takes just 2 minutes using our purpose-built software, and no calibration or power supply is required.
  • 4-wire universal transmitter (DIN-mount, isolated)
  • Accepts current, voltage, thermocouple, RTD and potentiometer input
  • User powered
  • Current or voltage output
  • LED indicator for error notification
  • USB port for PC programming (requires TM-USB communications kit)
  • Potentiometer for fine offset adjustment of output

General

Configuration 4-wire
EMC compliance EN61326 (Emissions); EN61326 (Immunity); EN61010-1 (Safety)
Housing 35mm DIN mount case: 79 x 30 x 68mm (H x W x D)
Operating humidity 5-85%RH MAX (non-condensing)
Operating temperature -20 to +85°C
Power supply 21-300Vdc or 85-265Vac
Status LED Flashing=Normal, On=Fault
Storage temperature -20 to +100°C
USB programmable Configure using simple TM Setup software. Requries TM-USB kit (sold separately)

Operation

Accurate to <±0.03% FSO typical
Ambient drift <±0.003%/°C FSO typical
Current output 4-20mA, 0-20mA, 20-4mA or 20-0mA. 20mA max output drive (650O max load at 13V DC)
Isolation test voltages between input and output 3750Vac for 1min
Max output current Limited to <28mA (emission and immunity)
Noise immunity 125dB CMRR average(2.0kV DC limit)
Output load resistance 700O at 24Vdc (50O/V above 9.5Vdc)
Potentiometer For fine offset adjustment of current output
R.F. immunity <1% effect FSO typical
Response time 400msec typical (10-90% 300msec typical)
Supply voltage sensitivity <±0.005%/V FSO
Voltage output 0-10Vdc or -10 to +10Vdc

Voltage Input Specifications

Input resistance 300kO min
Linearity & repeatability <±0.02% FSO typical
Max over-range 60Vdc continuous
USB programmable span 100mV to +/-10Vdc (bipolar)
USB programmable zero 0-±99% of the span

Current Input Specifications

Field programmable span 1µA-24mAdc
Input resistance 10O
Linearity & repeatability <±0.02% FSO typical
Max over-range 50mAdc continuous
USB programmable zero 0-±99% of the span

Thermocouple Input Specifications

Accuracy <±1°C (E, J, K, N, T); <±2°C (B, R, S)
CJC error <±1°C
Cold junction comp. -20 to +90°C
Field programmable span Refer to ordering information for min/max ranges for each type
Input impedance 1MO min
Sensor break output drive Function high upscale / function low downscale
T/C lead resistance 100O max
Temperature drift <±0.05°C (E, J, K, N, T); <±0.2°C (B, R, S)
Thermocouple types B, E, J, K, L, N, R, S, T
USB programmable zero 0-±99% of the span

RTD Input Specifications

Available RTD types JIS, Pt100/1000, Pt392, Cu10
Lead wire resistance Pt100: 10O/wire max; Pt1000: 5O/wire max (0.02% FSO offset error per O of lead resistance)
Linearity (Pt100) 0.02% FSO (for span inputs =200°C); 0.1% FSO (for span inputs =850°C)
Linearity (Pt1000) 0.02% FSO (for span inputs =200°C); 0.2% FSO (for span inputs =520°C)
RTD input Pt100 or Pt1000 DIN 3-wire type
Sensor break output drive Function high upscale / function low downscale
Sensor current 0.15mA nominal
USB programmable span -200 to +850°C
USB programmable zero 0-±99% of the span

Potentiometer Input Specifications

Excitation voltage 1.2Vdc
Field programmable span 0.1-100%
Field programmable zero 0-90% of the span
Linearity and repeatability <±0.02% FSO typical
Potentiometer input 3-wire potentiometer
Potentiometer resistance 0-2KO low pot, 0-1MO high pot

Included Accessories: Datasheet, mounting clips

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