11/11
ENVIRONMENTAL SENSOR TECHNOLOGY CO. INC.
VIII.
VIII.
VIII.
VIII. Troubleshooting
Troubleshooting
Troubleshooting
Troubleshooting
Troubles
Reasons
Treatment
Can not Start
Insufficient battery level
Circuit faults
Recharge or change the battery
Send it back to the factory to repair
High/Low
Readings
Zero point or high/low gain
calibration
Disabled sensor
Re-calibrate
Change the sensor
Unstable Readings
Not enough polarization time
Disabled sensor
Circuit faults
Self-excitation generated in the circuit
AC interference
Keep polarizing
Change the sensor
Send it back to the factory to repair
Adjust Span potentiometer to reduce the gain
Turn off high-frequency devices around (such as frequency
converter and interphone)
Slow Response
Time
Probe clogged with dust
Disabled sensor
Circuit faults
Clean up the dust on the protective covering
Change the sensor
Send it back to the factory to repair
IX.
IX.
IX.
IX. Instrument
Instrument
Instrument
Instrument Supporting
Supporting
Supporting
Supporting
1.
One set of EST-1000 Hand-held Intelligent Toxic Gas Detector
2.
One General 5V Power Adaptor
3.
One Standard 3.7V Rechargeable Lithium Battery
4.
One copy of EST-1000 Instructions for Use
5.
One copy of Verification Certificate
6.
One package of the product
Statement:
Statement:
Statement:
Statement:
The
The
The
The parameters
parameters
parameters
parameters described
described
described
described in
in
in
in the
the
the
the Instruction
Instruction
Instruction
Instruction may
may
may
may change
change
change
change in
in
in
in subsequent
subsequent
subsequent
subsequent
versions.
versions.
versions.
versions. Please
Please
Please
Please take
take
take
take the
the
the
the actual
actual
actual
actual object
object
object
object as
as
as
as the
the
the
the standard.
standard.
standard.
standard.
Appendix
Appendix
Appendix
Appendix Type
Type
Type
Type &
&
&
& Specification
Specification
Specification
Specification of
of
of
of the
the
the
the Sensor
Sensor
Sensor
Sensor
