HACH LANGE ORBISPHERE 3654, Руководство пользователя, Страница: 50 / 58

48
Maintenance and Troubleshooting
8.5.4 Clock settings
Choose the
Clock settings
command to set the date and time in the instrument.
The first screen displays the current date and time as set in the instrument. If this is correct,
choose
Ok
, else if either date or time must be changed, choose
Modify
to bring up the next
screen.
Enter the current date and time and choose
Ok
to store the entry into the instrument. All
measurements will be noted with the appropriate date and time when they are downloaded to
the WIN3654 program.
8.5.5 Analog voltages view
The
Troubleshooting
,
Analog Voltage View
gives a real-time look at voltages used by the
system to transmit information about gas, 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:
•
Gas channel: b0.1 V and +4 V, depending on the gas being measured
•
Temperature channel: +10 mV to +4 V
•
Pressure channel: -100 mV to +100 mV
The
POINT
window on the right side of the gas channel voltage, is a parameter useful for
troubleshooting by Hach Lange support technicians. It cannot be set or updated locally.
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.