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Problem Possible Causes and Solutions
The display shows
an error code
Controller problem. The error messages signify the following problems with the
controller.
Err 1
- a RAM error
Err 2
- a NVRAM error
Err 3
- a Structure error
Err 4
- an ADC setup error
Err 5
- an ADC ready error
Err 6
– a defective control sensor
Err 7
– a heater error
Initialize the system by performing the Factory Reset Sequence describe above.
Temperature can
-
not be set above a
certain point
Incorrect High Limit parameter. The High Limit parameter may be set below
125°C. Check this value as described in Section 7.7, Operating Parameters.
Display is reading
incorrectly
The instrument was turned off at high temperatures and reenergized too quickly.
Turn the instrument off until the display is completely off and then reenergize.
Display flickers
when the instru
-
ment is turned off
This is normal operation and is more prevalent at high temperatures due to Seebeck
Coefficient of the thermoelectric cooling devices. Some time is required to fully dis
-
charge the switching power supply and to complete the power off cycle.
The instrument
does not reach
temperature
The specifications for the instrument include an ambient temperature of 23°C. If the
ambient temperature is above 23°C, the instrument may not be able to reach the
lowest specified temperature. Check the ambient temperature if the instrument does
not reach maximum temperature.
12.2 CE Comments
12.2.1 EMC Directive
Hart Scientific's equipment has been tested to meet the European Electromag
-
netic Compatibility Directive (EMC Directive, 89/336/EEC). The Declaration
of Conformity for your instrument lists the specific standards to which the unit
was tested.
12.2.2 Low Voltage Directive (Safety)
In order to,comply with the European Low Voltage Directive (73/23/EEC),
Hart Scientific equipment has been designed to meet the IEC 1010-1 (EN
61010-1) and IEC 1010-2-010 (EN 61010-2-010) standards.
9140 Dry-well Calibrator
User’s Guide
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