Hach-Lange ORBISPHERE A1100 Family - Manual (Page 19)

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Section 4 Installation
4.1 Sensor preparation
Your A1100 electrochemical sensor has been thoroughly cleaned and tested at the factory
before shipment. It has been shipped with a cartridge containing a membrane and electrolyte
pre-installed to protect the sensor head. This cartridge must be removed and replaced with a
new one prior to first use to make it fully operational. The new cartridge is included in the sensor
recharge kit (see additional details in
Sensor recharge kit on page 14 ).
Non-ATEX sensors (A1100)
The sensor has been delivered with two protection caps, one with a grille and one without.
Ensure you use the correct protection cap for your application (see
Table 1 on page 10 for
additional information).
ATEX sensors (A110E)
The sensor has been delivered with a single protection cap.
The following instructions detail the steps required to make the sensor operational. Should you
have any questions, your Hach Lange representative will be pleased to help.
CAUTION
Avoid all eye and skin contact with the electrolyte in the sensor and replacement
cartridge as it is corrosive and can cause burning. If eyes or skin come into contact with
electrolyte, rinse immediately with water. In addition, the electrolyte can permanently
stain clothing so exercise care in handling. It is highly recommended to wear protective
gloves and glasses during this process.
Note: It is advisable to perform this procedure with the plastic sensor base installed so as to avoid any
damage to the connection socket and also to provide a suitable stand for the sensor when required.
1. Hold the main body of the sensor and
unscrew the protection cap locking washer
by turning counter-clockwise. Remove it from
the sensor and put to one side.
2. Pull/twist off the protection cap and put to
one side.