Wika 890.09.2190 Manual de usuario descargar pdf (Pagina 7)

WIKA operating instructions dierential pressure transmitter model 890.09.2190 7

11171545.02 08/2010 GB/D/F/E

3. Specications

General

Process connection 2 x 7/16 UNF male thread

Materials

 Pressure connections

 Sealings

 Media chamber

 Sensor element

Cu alloy - wetted

FPM/FKM - wetted

Zinc diecast - wetted

Ceramic Al

2O3 - wetted

Dierential pressure measuring

ranges

0 ... 1 bar, 0 ... 2 bar, 0 ... 4 bar, 0 ... 6 bar or

0 ... 10 bar

Max. working pressure (stat.) 21 bar

Overpressure safe either side

max.

2.5 x end value of measuring range, max. 21 bar

Pressure spikes are to be reduced through

constructive measures (e.g. capillaries)

Measurement time constant T

mess = 10 ms (sensor + electronics)

Accuracy (error band) ± 2 % of span (linearity, hysteresis, temperature

error 10 ... 70 °C)

Linearity, hysteresis ± 1 % of span

Temperature coecient 0.2 % of span / 10 K

Zero oset ± 0.1 mA

Permissible ambient temperature -10 °C ... 50 °C

Permissible medium temperature -10 °C … 80 °C

Ingress protection IP 55 per EN 60529 / IEC 529

Electrical data

Nominal voltage DC 24 V

Permissible supply voltage DC 18 … 30 V

Electrical connection 3-wire

Output signal 4 ... 20 mA

Max. load 500 Ohm

Current supply

 at output max.

 at current limitation

approx. 32 mA normal (typical)

approx. 36 mA (at overpressure)

Wiring protection Short-circuit-proof, after eliminating the fault the

operability is recovered

Electrical connection

 3-wire numbered cable

 Connection with snap-in M8

connector (3-pin)

0.34 mm², 0.8 m to 2.5 m long

replaceable at the instrument, outer cable end

with single wires for clamping

3. Specications

1 2 3 4 5 6 7 8 9 10 11 12 ... 43 44

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Wika 890.09.2190 Manual de usuario Pagina 7

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