WAGO-I/O-SYSTEM 750
Device Description 29
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
3.6.4
Inputs
Table 13: Technical Data – Inputs
Number of analog inputs
4 (electrically isolated) )
Signal type
Measurement ranges
Resistive temperature device (RTD) Pt100
*)
, Pt200, Pt500, Pt1000
Ni100, Ni120, Ni200, Ni500, Ni1000,
Ni1000-TK5000
Thermocouples (TC) Type B (+250 ... +1,820 °C);
Type C (0 ... +2,315 °C);
Type E (−200 .
.. +1,000 °C);
Type J (−210 ... +1,200 °C);
Type K (−200 ... +1,372 °C);
Type N (−200 ... +1,300 °C);
Type R (−50 ... +1,768 °C);
Type S (−50 ... +1,768 °C);
Type T (−200 ... +400 °C);
Resistors
Resistor Bridges (Strain gauge)
0-
250 Ω, 0
-
500 Ω, 0
-
1 kΩ, 0
-
2 kΩ,
0-
4 kΩ
U
ref
: 2.4 V;
U
d
: ±15 mV, ±30 mV, ±60 mV
Thermistor PTC
mV transmitter ±30 mV, ±60 mV, ±120 mV, ±250 mV,
±500 mV, ±1000 mV, ±2000 mV
Potentiometer setting 0 … 100 %
Sensor connection
RTD/R: 2-wire; 3-wire
*)
; 4-wire
TC/Millivolt: 2-wire
Resolution
Measured value resolution: 16-bit,
switchable
• 0.1 °C (°F) (K) /Digit
• 0.01 °C (°F) (K) /Digit
(only valid for measurement range
−50
°C … +150 °C)
Resolution in process image
<
0.1 K of full scale value
< 0.01 K of full scale value
(limi
ted to −50 °C ... +150 °C)
Conversion time
≥ 10 ms/2 wires (per channel)
1)
;
≥ 20 ms/3 wires, 4 wires (per channel)
Measurement error typical at surrounding air temperature of 25 °C
In delivery state ±0.2 % of the upper measurement
range value (value achieved during
calibration in operating environment
0 ≤ TA ≤ 55 °C)
After user calibration ±0.05 % of the upper measurement
range value (only valid in the thermally
stable operating state)
