WIKA S-20 - Manual (Page 9)

9 WIKA operating instructions pressure transmitter, model S-20
14043170.02 07/2014 GB/D/F/E
GB
3. Specifications
3. Specifications
Specifications
Measuring range See product label or test report
Vacuum tightness Yes
Reference conditions Per IEC 61298-1
■ Temperature 15 ... 25 °C (59 ... 77 °F)
■ Atmospheric pressure 860 ... 1,060 mbar (12.5 ... 15.4 psi)
■ Humidity 45 ... 75 % r. h.
■ Power supply DC 24 V, DC 5 V with ratiometric output
■ Mounting position Calibrated in vertical mounting position with pressure connection facing downwards.
Output signal See product label or test report
Permissible load in Ω
■ Current output ≤ (power supply - 7.5 V) / 0.023 A
■ With optional settling time of 1 ms ≤ (power supply - 11.5 V) / 0.023 A
■ Voltage output > maximum output voltage / 1 mA
■ 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
■ Current output 828 mW (22 mW/K derating of the dissipation loss with ambient temperatures ≥ 100 °C (212 °F))
■ 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.
■ Current output Current signal, max. 25 mA
■ Voltage output Max. 12 mA