4 Assumptions and restrictions for use of the product
4.1 Basic safety specifications
Operational temperature range................ -20...+60°C
Storage temperature range...................... -20...+85°C
Power supply type, min. .......................... Double or reinforced
Supply voltage ......................................... 19.2...31.2 VDC
Relay output pulse length, min. ............... 70 ms
Loop supply ............................................ >16.5 V @ 20 mA
External loop supply voltage ................... 5...26 VDC + external drop
(Passive output)
Mounting area .......................................... Zone 2 / Division 2 or safe area
Mounting environment ............................. Pollution degree 2 or better
4.2 Safety accuracy
The analogue output and relay output corresponds to the applied input within the
safety accuracy.
Safety accuracy ....................................... ±2%
4.2.1 Minimum span
For temperature measurements, the selected range (OUT.HI - OUT.LO), and for
linear resistance measurements the selected range (R 100% - R 0%), shall be
larger or equal to the values below:
4.2.2 Range limitations
TC type B shall not be used below +400°C
4.3 Associated equipment
4.3.1 RTD or linear resistance sensor wiring
If a 2-wire or a 3-wire connection for RTD or linear resistance is selected,
Input
type
Minimum span for safety
accuracy
Pt100, Pt200, Pt1000 28°C
Pt500, Ni100, Ni120, Ni1000 43°C
Pt50, Pt400, Ni50 57°C
Pt250, Pt300 85°C
Pt20 142°C
Pt10 283°C
TC: E, J, K, L, N, T, U 91°C
TC: B, R, S, W3, W5, LR 153°C
Linear resistance, R 100% ≤ 800 W 53 W
Linear resistance, R 100% > 800 W 667 W
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