Gas Challenge - Thermo Scientific MIRAN 205B Series Instruction Manual

Warning: The gas tank is shipped with a trigger valve safety tab. DO NOT REMOVE
THIS TAB UNTIL AFTER THE GAS SAMPLING LINE HAS BEEN FULLY
INSTALLED.
Grasp the capillary tubing end of the sampling line at the location indicated in Figure E-2,
and slowly push it into the nozzle opening on the gas tank. When the tubing is fully
inserted, only about 1/8 inch of the capillary remains exposed. Use the other hand to hold
the gas tank valve mechanism proper.

GAS CHALLENGE

Zero Analyzer
The next step is to zero the analyzer as directed by the menu prompts. Once the analyzer
is zeroed, the displayed concentrations for both gases should be substantially zero; if the
data is to be logged, select the option from the displayed menu.
At this point, do not remove the zero filter. Instead, perform several more complete
measurement cycles to confirm a stable zero. Typically, another minute of operation in
this condition is sufficient.
Attaching the Sampling Accessory
After several measurement cycles have elapsed, turn off the pump by pressing the
CONTROL key and selecting 2=PUMP OFF.
Note: The pump must be off during delivery of the calibration gas.
With the pump off, proceed as follows:
1. Attach the tubing sleeve to the INLET port of the analyzer.
2. Remove the trigger valve safety tab from the gas tank delivery nozzle.
MIRAN SapphIRE Field Performance Verification Kit
Figure E-2. Inserting the Capillary into the Gas Tank
E-3