Wika S-20 Manuel d'utilisateur télécharger pdf (Page 10)

10 WIKA operating instructions pressure transmitter, model S-20

14043170.02 07/2014 GB/D/F/E

3. Specications

Specications

Non-linearity (per IEC 61298-2) See test report

Relationship to the mounting position For measuring ranges < 1 bar (15 psi), an additional zero oset of up to 0.15 % applies

Non-repeatability ≤ ±0.1 % of span

Temperature hysteresis 0.1 % of span at > 80 °C (176 °F)

Long-term drift (per IEC 61298-2) ≤ ±0.1 % of span

≤ ±0.2 % of span (with special measuring ranges and measuring ranges < 1 bar (15 psi))

Temperature error For calibration temperature 15 ... 25 °C (59 ... 77°F)

-20 ... +80 °C: ≤1 % of span

-30 ... +100 °C: ≤1.5 % of span

For measuring ranges < 1 bar (15 psi), special measuring ranges and instruments with an

increased overpressure limit the respective temperature error increases by 0.5 % of span

Derating for cooling elements

■

Max. permissible ambient tempera-

ture

amb

med

< 125 °C) = 125 °C

amb

med

≥ 125 °C) = -0.62 x T

med

+ 202 °C

■

Max. permissible medium tempera-

ture

med

amb

< 80 °C) = 200 °C

med

amb

≥ 80 °C) = -1.61 x T

amb

+ 326 °C

amb

= Ambient temperature [°C]

med

= Medium temperature [°C]

Storage and transport conditions

■

Permissible temperature range -40 ... +70 °C (-40 ... +158 °F)

■

Maximum humidity (per IEC 68-2-78) 67 % r. h. at 40 °C (104 °F) (in accordance with 4K4H per EN 60721-3-4)

Climate class For indoor and outdoor use. Protect the instrument from direct sunlight.

■

Storage 1K3 (per EN 60721-3-1)

■

Transport 2K3 (per EN 60721-3-2)

■

Operation 4K4H (per EN 60721-3-4, without condensation or icing)

Vibration resistance (per IEC 68-2-6) 20 g, 10 ... 2,000 Hz (40 g, 10 ... 2,000 Hz for circular connector M12 x 1, metallic)

For instruments with cooling elements a limited vibration resistance of 10 g, 10 ... 2,000 Hz,

applies.

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Wika S-20 Manuel d'utilisateur Page 10

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