Wika LH-20 Bedienungsanleitung PDF herunterladen (Seite 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

Inuence of the installation position < 0.2 mbar/20 Pa (0.003 psig)

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Wika LH-20 Bedienungsanleitung Seite 23