Advertisement
Zero-Air Flow Controller
Gas Flow Controller
Thermo Fisher Scientific
FLOW CONTROLLER SELECTION:
>ZERO SCALE
GAS
OPER
MODE
The Zero-Air Flow Controller screen is used to select the zero-air
controller. Allowable selections are: 5, 10, 15, and 20 slm. The zero-air
flow controller calibration points are reset to defaults when a new controller
is selected.
Note Changing the flow controller selection may affect allowable limits for
span concentration and total flow. If is advisable to check these settings.
The mass flow controllers are accurate to only ±2% upon delivery from the
manufacturer. The instrument includes factory-set calibration curves to
improve this accuracy. To achieve an equivalent accuracy when installing
new controllers, see
"Zero Flow
In the Main Menu, choose Service > Flow Control Selection > Zero
●
Scale.
ZERO AIR FLOW CONTROLLER:
CURRENTLY:
SET TO:
OPER
MODE
The Gas Flow Controller screen is used to select the gas controller.
Allowable selections are: 25, 50, 100, 200, and 500 sccm. The gas flow
controller calibration points are reset to defaults when a new controller is
selected.
10
SLM
100 SCCM
DIAGS ALARM
Calibration" later in this chapter.
5 SLM
20 SLM
?
CHANGE VALUE
SAVE VALUE
DIAGS ALARM
Model 146i Instruction Manual
Operation
Service Menu
▲
▲
3-85
Advertisement
Troubleshooting
