HF scientific Micro100 Laboratory Turbidimeter - Manual (Page 16)

Micro 100 (5/10) Page 10
Rev. 3.3
7.0 Troubleshooting
7.1 System Warning Message(s)
Automatic warning messages are generated by the MICRO 100 to provide you with specific diagnostic
information about the instrument. These messages are for your use and do not reduce the performance
of the instrument.
7.1.1 Flashing “Cal” block
A flashing "Cal" block observed during normal automatic mode indicates that you should recalibrate
your instrument. The factory default is 30 days. HF recommends calibration every 30 days. The
flashing "Cal" block is only a warning and does not mean that the instrument will stop performing
accurately. The "Cal" block will flash until you have recalibrated the instrument.
7.1.2 Flashing “LoBat” block
A flashing “LoBat” block on the display indicates that the backup batteries need to be replaced. Under
this condition, the parameters that are stored in memory (all of the user settable parameters and the
instrument calibration) may be lost under conditions when power is not supplied to the instrument. See
section 8.3 for instructions on replacing the batteries.
7.2
System Error Message(s)
Error messages are generated by the MICRO 100 when it detects problems with the instrument
operation. When these messages are observed and if you do not understand the instructions shown
below, contact the HF scientific. Technical Services department to determine a resolution to the
problem. An error message is indicated by the instrument when an "E-0X" is displayed on the lower
row of the display. The MICRO 100 has five error codes, each assessing a different component or
system of components in the instrument. The following table lists the error messages and their
associated meanings.
ERROR MESSAGE ASSOCIATED MEANING TYPICAL CAUSE
E-01
Overall light level detected is too low during
calibration
Wrong standard is in the optical
well or lamp failure
E-02
Overall light level detected is too high during
calibration
Wrong standard is in the optical
well.
E-03
Amount of light detected between 0.02 NTU and
10.0 NTU is too small during calibration
Wrong standard is in the optical
well or bad A/D circuitry
E-04
Amount of light detected between10.0 NTU
and 1000 NTU is too small during calibration
Wrong standard is in the optical
well or bad A/D circuitry
E-05
Amount of light detected is too low during
normal mode
Lamp failure