9 electrical specifications, 10 caution – Bronkhorst CEM W-300B User Manual
Page 10
BRONKHORST HIGH-TECH B.V.
2.9 Electrical specifications
2.9.1 Functional diagram
2.9.2 Electrical specifications
Heater
The heater consists of two heater elements with a resistance of approx. 19,25 ± 0.5 Ohm each.
For 110…120Vac-power supply:
two heater elements switched parallel.
For 220…240Vac-power supply:
two heater elements switched serial.
Temperature sensor
Heraeus Sensor PT 100 sensor M-K 2515 1PT100
Safety switch:
Pepi Miniature Thermostat Model C, CH version
Switch temperature: 200 ºC
Contact rating: 24Vdc max / 3A max.
Controlled power supply
110…120Vac or 220…240Vac max. (Factory adjusted)
50-60 Hz
Power 1650VA max.
Max. Ambient temperature
50°C max.
2.10 Caution
Each system is pressure tested to at least 1.5 times the working pressure of the process conditions stipulated
by the customer, with a minimum of 8 bar.
This testpressure is stated on the CEM valve with a Red Coloured sticker.
Check testpressure before installing in the line.
If this sticker is not available, or the testpressure is incorrect, the instrument should not be mounted in the
process line and be returned to the factory.
Each instrument is leak tested to at least 2 ⋅10
-9
mbar.l/s Helium.
page 10 9.17.082