iii
Contents
Maintenance .................................................................5.1
Maintenance ...............................................................5.1
Cleaning the probe ..........................................................5.1
Changing the batteries .......................................................5.2
Battery types ...............................................................5.3
Routine maintenance ........................................................5.4
Routine maintenance ........................................................5.4
Inspecting the inner diaphragm seal .............................................5.5
Fault-finding .................................................................6.1
Parts list .....................................................................7.1