WIKA LH-20 - Manual (Page 23)

23
8 Supplement
WIKA Operating instructions - Submersible pressure transmitter model LH-20
Measuring ranges Overload capacity, max. pressure
0 … 2.5 bar 50 bar
0 … 4 bar 65 bar
0 … 6 bar 90 bar
0 … 10 bar 90 bar
0 … 16 bar 130 bar
0 … 25 bar 130 bar
Output variable 4 … 20 mA
Output signal
4 … 20 mA
Signal resolution 4 µA
Fault signal 22 mA
Max. output current 22 mA
Run-up time
Ʋ with deviation ≤ 0.2 % approximately 2 s
Ʋ with deviation ≤ 0.1 % approximately 15 s
Output variable 4 … 20 mA/HART (optional)
Output signal
4 … 20 mA/HART
HART output values according to HART standard 5.0
Ʋ Primary Value Pressure
Ʋ Secondary Value Temperature
Signal resolution 1 µA
Fault signal < 3.6 mA
Max. output current 22 mA
Run-up time approx. 15 s
Additional output parameter - temperature (optional)
Integrated resistance thermometer
Pt 100 according to DIN EN 60751
Tolerance class B
Range -50 … +100 °C (-58 … +212 °F)
Reference conditions and actuating variables (according to DIN EN 60770-1)
Reference conditions according to DIN EN 61298-1
Ʋ Temperature +15 … +25 °C (+59 … +77 °F)
Ʋ Relative humidity 45 … 75 %
Ʋ Air pressure 860 … 1060 mbar/86 … 106 kPa (12.5 … 15.4 psig)
Determination of characteristics Limit point adjustment according to IEC 61298-2
Characterstic curve Linear
Reference installation position upright, diaphragm points downward
Influence of the installation position < 0.2 mbar/20 Pa (0.003 psig)