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SECTION 4 TROUBLESHOOTING
4.1 Introduction
Correcting problem conditions with the sension
™
electrochemical meters is limited to responding to the error
message displayed. Other problems must be handled by a Hach
technician at a service center. Refer to REPAIR SERVICE on page
38. Do not attempt to service the meter as there are no field-
serviceable parts. Opening the meter case will void the warranty.
4.2 Shorting Test
This test detects the meter offset.
1. Turn the meter on. Connect the shorting cap to the BNC
connector (see Figure 7). Unplug any electrodes from the
5-pin connector. Select the BNC connector from Setup 1.
2. Change the output to display in mV (press
pH/mV to toggle
between pH and mV readings). After the meter has stabilized,
simultaneously press
CAL and ENTER. The display should
show
0.0 mV. If it does not, contact Hach Service.
Figure 7 Attaching Shorting Cap to The BNC Connector
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