OCM Pro CF
OCM Pro CF - Rev. 09 as of 07.06.2016 page 93
Fig. 9-42 Water-ultrasound + 2-wire probe
US internal + Pressure
int.
Combination of options 1, 2 and 5.
This combination is recommended from 0 cm filling level up to overflow if the
best possible measuring accuracy is required.
In this case the pressure sensor detects the upper measurement range. The
water-ultrasound sensor detects the medium range and the air-ultrasound
sensor detects the low range.
Please observe to install the water ultrasonic sensor in the centre of the bottom
Fig. 9-43 Sensortyp Luft-Ultraschall, Wasser-Ultraschall und Druck
2-Wire probe (Ex) +
Pressure int.
Combination of options 2, 3 or 6 and 5.
Application as the combination >Air US + Water US + Pressure<.
An external 2-wire probe (expediently an echo sounder) is used to detect low
filling levels instead of the air-ultrasound sensor.
Please observe to install the water ultrasonic sensor in the centre of the bottom.
This parameter is required only for applications where the sensor is not installed
directly on the channel bottom but is mounted in a pipe on a wedge support or
out of the centre to avoid effects due to sedimentation.