Sutron Corporation 8310 & 7310 Users Manual 8800-1125Rev. 2.7 (BETA) 4/16/2014 pg. 210
Introduction
The 8310 was designed for rugged field operation in extreme conditions. We have done our best
to provide you with a reliable data logger. In the event you have trouble with the 8310, we
recommend that you first look for the cause in the most obvious of places. Many common
problems come from simple sources. Corroded or damp connectors probably cause 95 percent
of all problems, followed by old, failing batteries and improper setup.
General Troubleshooting Procedures
Troubleshooting should always follow a logical progression. The intent should always be to
isolate the problem to a specific area, and then focus on that troubled area. Is it an instrument
problem? Is it a power problem? Is the unit set up properly? The following paragraphs describe
how to isolate problems.
Display will not light
The display should light when power is first applied to the 8310 or when any key is pressed. If
the display does not light as explained, the first suspects should a dead main battery.
To check an external battery, simply measure the voltage on the battery using a Volt Meter. To
check an internal battery, you must first open the unit in order to reach the battery.
If the battery voltage is less than 9.5v then the battery is either discharged or faulty and must be
replaced or recharged. A normal battery will read 11 to 13 VDC without charging and 13 to 14.7
volts under a charge. Disconnect the charging voltage if it is present to get a good measure of
the batteries condition.
If the 8310 will not power up after you have checked and/or replaced the battery, you may have
a serious problem and the unit must be returned to the factory for repair.
8310 turns on but does not work properly
When the 8310 display will come on, but you still have problems then you must determine
whether you have a hardware problem or a setup problem. Hardware problems occur when
sensors quit, wires become loose or corroded, or things are wired incorrectly. Setup problems
are those in which signals get to the 8310 but are not properly sampled, processed, or recorded.
Sensor problems
Hardware problems may show up in several ways. Two of the most common ways are; (1)
inability to obtain sensor data at a new installation; and, (2) data for one or more sensors
disappears at a site that has been working properly.
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