Hach-Lange ORBISPHERE 3650 - Manual (Page 49)

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Maintenance and Troubleshooting
7.2.5 Analog voltages view
The Troubleshooting, Analog Voltage View gives a real-time look at voltages used by the
system to transmit information about sensor current, temperature and pressure. This is useful
when trying to identify an instrument problem with a Hach Lange service representative either
on-site or over the phone.
The voltage limits for normal operation are:
• Current channel: -1.5 V to +1.5 V
• Temperature channel: +10 mV to +4 V
• Pressure channel: -100 mV to +100 mV
The Range window on the right side of the Current channel voltage indicates one of the four
instrument ranges: 0 (less sensitive) to 3 (most sensitive).
7.2.6 Measurements view
The Troubleshooting, Measurements View confirms, on your PC monitor, what your
instrument should be displaying on the LCD for gas concentration and sample temperature.
When performing this test, if the system is
over-range, you may receive a message
that states, for example, The current
input is saturated
.
Similar messages will also appear, to warn
when temperature and pressure limits are
exceeded.
Choose Cancel to exit from this display.