TS4000
42
If calibration is not complete within ten minutes, the unit reverts to a Fault condition. This
condition can be only be cleared by recalibrating or restarting the unit.
NOTE:
It is not possible to abort calibration once gas is applied.
4.10 Remaining Sensor Life
The TS4000 provides an estimate of remaining sensor life, in percent remaining, to provide the
user with an early warning of the need for sensor replacement. The remaining sensor life is
updated each time the unit is calibrated. The current remaining sensor life estimate displays
during the zeroing portion of a calibration sequence. It can also be read using the MODBUS
interface. Refer to Section 5.0 for more information.
NOTE:
The remaining sensor life is only an estimate of the amount of life remaining for the
sensor. This estimate can be influenced by many factors, including environmental
conditions, poisons, etc. It should be used only as an estimate for preventive
maintenance and logistics purposes.
4.10.1 Initializing the Remaining Sensor Life
The remaining sensor life estimate must be initialized each time a new electrochemical cell is
installed. The initialization should be done during the first calibration of a newly installed sensor.
After the sensor has been powered for a minimum of one hour, enter Calibration Mode (refer to
Section 4.9). While the display is flashing the remaining sensor life estimate, apply the magnet
until the flashing number changes to “
100
.” This indicates that the sensor life will be reset upon
completing calibration.
4.11 Calibration Equipment – Portable Purge Calibrator
A Portable Purge Calibrator is used for field calibration of the TS4000. The operational /
storage temperature range for the Portable Purge Calibrator is 0°F to +130°F (-18°C to +54°C).
NOTE:
Do not store the cylinder with the regulator fully engaged in the cylinder valve.
To use a Portable Purge Calibrator
1. Make sure the Portable Purge Calibrator contains a gas concentration equivalent to
50% FS for the unit that is going to be calibrated.
2. Ensure that the sensor is exposed to clean air. If it is suspected that background or
interfering gas is present, purge the sensor with clean air.
3. Place the gas cup over the sensor.
4. Apply and remove the magnet and then navigate to “
AC
”, then apply and remove the
magnet to enter calibration.
5. Apply the calibration gas when “
gAS
” is displayed.
6. “
CP
” is displayed when the sensor detects gas (indicating “Calibration in Progress”).
7. “
CC
” is displayed to indicate “Calibration Complete.”