Hach-Lange NO3D sc Nitrate Sensor - Manual (Page 15)

15
Installation
3.4 Installation of the cleaning unit (optional)
To install the cleaning unit on the sensor, refer to the installation
instructions for the cleaning unit (
section 7.4 on page 37 ).
The cleaning interval can be set using the relay control of the sc
controller. Select RTC (Real Time Clock) as the signal source.
3.5 Installation of the sensor in the sample flow
Installation kits are available for the installation of the sensor with or
without a cleaning unit for a wide range of requirements.
The following rules must always be considered prior to installation:
• Install the sensor where the sample that comes into contact
with the sensor is representative of the entire process.
• Position the sensor at least 200 mm (7.87 in.) from the tank
wall.
• When using a chain bracket, ensure that the sensor cannot hit
the tank wall when it moves.
• Immerse the sensor at an angle of approx. 45° ± 15° in the
direction of the flow so that air bubbles cannot remain
underneath the membranes.
• Ensure that the sensor is fully immersed.
• When using the cleaning unit refer to the supplied Instruction
Sheet.
• Refer to the instructions supplied with the optional mounting
accessories for detailed installation information (see
Figure 10
on page 16 ).
Figure 9 Cap of the storage container as a tool/screwing aid for the locking ring
1 Cap 2 Locking ring