Ametek TM2000 Pro, User Manual

Page: 90 / 148

5-18 | TM2000 Oxygen Analyzer
tWO-GaS CalibratiON
auto Calibrate

Enter the calibration gas value to match the zero calibration gas cylinder you are using to
calibrate your system.

Define how long you want the calibration gas to flow through the sensor ( Set Cal tim-
ers/Cal Gas Duration ). Remember that with an auto calibration, the RCU automati -
cally shuts down the zero calibration gas based on the calibration gas duration time you
specify. Be sure to allow enough time for the gas to stabilize. You may want to use the
inject Cal Gases option from the Calibrate menu to determine how long it takes for the
gas from the remote calibration unit (RCU) to reach the sensor and stabilize and then
use this time.

Define a time period for the system to recover from reading the calibration gas value to
reading process gases ( Set Cal timers/recovery Duration ).
1. From the Calibrate Key menu, select Initiate Cal .
2. Select Continue Cal to continue or Abort Cal to cancel the calibration and
avoid recovery time. Pressing Cancel acts the same as Abort Cal .
3. Select Auto Calibrate .
The system begins the automatic calibration and notifies you how long the span
gas will be applied to the sensor from the RCU:
During this time, the RCU has switched the solenoid valves and has introduced
the zero gas to the sensor.
The system displays the remaining recovery time:
The system returns to monitoring process readings, and the calibration is com-
plete. You can view the results of the last calibration using Cal/Verify Data from
the Calibrate Key menu.
Are the Cal Gas values entered?
Zero Gas xx:xx
System Calibrating
Recovery xx:xx