-
Make sure the phx42 is ignited and warmed up before attaching it to the SpanBox5.
-
Tap the Drift box on the Home screen.
-
Follow the on-screen prompt to confirm the phx42 is attached to THE SAME PORT it was calibrated on earlier in the day.
-
Analyzers with a Daily Calibration from today will appear.
-
On the right of each analyzer, the latest EOD and Noon drift results will be shown.
-
-
Check the boxes next to the analyzers to be drifted:
-
If the analyzer can’t be discovered, it will be grayed out.
-
If the analyzer is in range, wait a minute for the SpanBox5 to discover and connect.
-
-
Tap either Noon or End of Day radio button at the bottom of the screen.
-
Tap Next.
- Note: If a drift of the same type (Noon or EOD) has already been performed on a unit, it will prompt you to confirm you want the previous drift overwritten.
- Note: If a drift of the same type (Noon or EOD) has already been performed on a unit, it will prompt you to confirm you want the previous drift overwritten.
-
If the cylinder information is correct, tap Next. This will auto-advance after 10 seconds. Otherwise, tap Manage Cylinders (you must use the same cylinders used for calibration).
-
The Drift process will begin.
-
Units will be drifted to the selected cylinders.
-
If you are running a standard drift, each gas will be applied once.
-
If you are running a VVa drift, each gas will be applied 3 times.
-
If a unit fails a gas, it will continue testing the unit while continuing the drift process for the other units.
-
-
Select your name from the Technician dropdown and sign, then tap OK.
| Standard Drift Formula | D = Drift reading C = Calibration reading or cylinder concentration Drift Pct = ((D – C)/C) x 100 |
| VVa Drift Formula | Drift % = ((D – C) / C ) x 100 for each attempt of the drift and then for the overall Drift Pct for the gas Drift Pct = (((D1+D2+D3) / 3) – C ) / C ) x 100 |
| Drift to… | Calibration PPM: Calculates the passing drift PPM using the confirmation PPM value from the analyzer’s Daily Calibration. Cylinder Concentration: Calculates the passing drift PPM using the cylinder’s Actual Concentration value. Both: Calculates the passing drift PPM using first the Calibration PPM and then separately the Cylinder Concentration and requires the drift PPM to pass both. |