Omega DRST-UR, Руководство пользователя

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14
Section 8 - Inputs
Order codes / Specifications
8
Cable resistance per wire (max.), RTD 50 Ω
Sensor current, RTD ....................... Nom. 0.2 mA
Effect of sensor cable resistance
(3- / 4-wire), RTD ........................... < 0.002 Ω / Ω
Sensor error detection, RTD ......... Yes
Short circuit detection, RTD ......... < 15 Ω
EMC immunity influence ........ < ±0.5% of span
Extended EMC immunity:
NAMUR NE 21, A criterion, burst ......... < ±1% of span
Basic values
Input
type
Basic
accuracy
Temperature
coefficient
mA
≤
±4 µA
≤
±0.4 µA / °C
Volt
≤
±20 µV
≤
±2 µV / °C
Pt100
≤
±0.2°C
≤
±0.01°C / °C
Linear resistance
≤
±0.1
Ω ≤
±0.01
Ω
/ °C
Potentiometer
≤
±0.1
Ω ≤
±0.01
Ω
/ °C
TC type:
E, J, K, L, N, T, U
≤
±1°C
≤
±0.05°C / °C
TC type: R, S, W3, W5, LR
≤
±2°C
≤
±0.2°C / °C
TC type: B
85...200°C
≤
±4°C
≤
±0.4°C / °C
TC type: B
200...1820°C
≤
±2°C
≤
±0.2°C / °C
Input
type
Min.
value
Max.
value Standard
Pt10...Pt1000
Ni50...Ni1000
Cu10...Cu100
Lin. R
Potentiometer
-200°C
-60°C
-200°C
0
Ω
10
Ω
+850°C
+250°C
+260°C
10000
Ω
100 k
Ω
IEC 60751
DIN 43760
α
= 0,00427
-
-
Auxiliary supplies:
2-wire supply (terminal 44...43) ... 25...16 VDC / 0...20 mA
RTD, linear resistance and potentiometer input
Input for RTD types:
Pt10, Pt20, Pt50, Pt100, Pt200, PT250, Pt300, Pt400, Pt500, Pt1000
Ni50, Ni100, Ni120, Ni1000, Cu10, Cu20, Cu50, Cu100