Wika S-20 Manual do Utilizador descarregar pdf (Página 9)

9WIKA operating instructions pressure transmitter, model S-20

14043170.02 07/2014 GB/D/F/E

3. Specications

Specications

Measuring range See product label or test report

Vacuum tightness Yes

Reference conditions Per IEC 61298-1

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Temperature 15 ... 25 °C (59 ... 77 °F)

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Atmospheric pressure 860 ... 1,060 mbar (12.5 ... 15.4 psi)

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Humidity 45 ... 75 % r. h.

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Power supply DC 24 V, DC 5 V with ratiometric output

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Mounting position Calibrated in vertical mounting position with pressure connection facing downwards.

Output signal See product label or test report

Permissible load in Ω

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Current output ≤ (power supply - 7.5 V) / 0.023 A

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With optional settling time of 1 ms ≤ (power supply - 11.5 V) / 0.023 A

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Voltage output > maximum output voltage / 1 mA

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Ratiometric output

> 4.5k

Switch-on time 150 ms

Switch-on drift 5 s (60 s with optional zero point adjustment 0.1 %)

Voltage supply See product label or test report

Dissipation loss

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Current output

828 mW (22 mW/K derating of the dissipation loss with ambient temperatures ≥ 100 °C (212 °F))

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Voltage output 432 mW

Current supply External circuits connected to the electrical outputs of the pressure transmitter must be

energy-limited electrical circuits in accordance with section 9.4 of UL/EN/IEC 61010-1, or an

LPS to UL/EN/IEC 60950-1, or class 2 in accordance with UL1310/UL1585 (NEC or CEC).

External circuits must be suitable for operation above 2,000 m should the pressure transmitter

be used at this altitude.

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Current output Current signal, max. 25 mA

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Voltage output Max. 12 mA

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 95 96

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