Hach ORBISPHERE 31x9 Series Basic User Manual page 8

membrane, prior to installation. An easily removed label is stuck on the protection cap to remind you
of this.
Two small identification clips (stamped with the letter "T") will be delivered with every sensor. They
should be used to identify the connection cable between the sensor and a multi-channel analyzer.
This is important in order to avoid connecting the sensor to the wrong measurement board.
Connecting a TC sensor to an EC measurement board (and vice versa) can damage both the sensor
and the electronics.
A sensor maintenance kit
The maintenance kit includes the material needed to service and maintain the sensor.
Storage information
During a short shutdown period (such as weekends), the sensor may stay in place with the
instrument turned on, and purge gas supplied. If the inactive period is likely to last longer, remove the
sensor, wipe it dry and store it properly, using the plastic storage cap supplied.
We recommend you use the ORBISPHERE 32605 Purge safety backup unit to ensure that the purge gas supply
to the sensor will not get interrupted in case of a mains power outage. See
on page 10.
Instructions for sensor storage
• If the sensor's head shows deposits, rinse it under tap water.
• Wipe the sensor head dry.
• Put a small silica desiccant bag inside the storage cap.
• Put the storage cap in place.
• Store the sensor in a safe dry place.
• The storage place must be at a stable room temperature.
Pay attention to rapid temperature change situations, such as air conditioning being turned on and off daily, that
may create condensation inside the sensor's cell and damage the electronics inside.
Installation
Pre-installation
8 English
C A U T I O N
C A U T I O N
Purge safety backup unit