Bacharach HI FLOW Sampler, Инструкция

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Operation Hi Flow Sampler
Instruction 0055-9017
32
3.18 Making a Leak Rate Measurement
Before making a leak rate measurement, the user must decide whether
to use . . .

the Basic or Expanded Menu Mode (Section 3.8)

lpm or cfm for the flow rate (Section 3.12)

the Automatic 2-Stage, Manual 2-Stage, or Manual 1-Stage
method of making a measurement when operating in the
Expanded Menu Mode (Section 3.14)

a Test ID when operating in the Expanded Menu Mode (Section
3.17)
3.18.1 Leak Rate Measurement – Basic Menu Mode
While operating in the Basic Menu Mode, the user starts a measurement
at a high flow rate and then waits for a stable leak rate reading to occur.
During this time the flow rate can be changed using the Speed function
on the Main Screen. This mode is used when more control of the leak
rate measurement process is required, and when saving data is not
desired.
1. If not already done, place the instrument into its Basic Menu Mode
per
Section
3.8 Selecting the Basic or Expanded Menu Mode .
2. Choose an attachment that will ensure the complete capture of the
gas leak. Connect this attachment to the end of the Hi Flow
Sampler’s main sampling hose and position the attachment’s inlet
over the leak source.
3. Position the inlet of the instrument’s background gas sampling hose
opposite the leak source, such that the leak source will not
contribute to the background measurement.
4. Select Start from the Main Screen.
1 1 / 2 2 / 0 4 0 9 : 4 5 : 3 0
B a c k ( % ) 0 . 0 0
L e a k ( % ) 0 . 0 0
L e a k ( N o t A v a i l . )
S p e e d ( L O < > H I )
S t a r t
[ 0 0 0 1 ] ( M ) S - -
5. Begin measuring until a stable leak measurement is achieved—this
may take several minutes.
If desired, the flow rate can be manually controlled by using the
Speed function. Each press of the
I/O

key will lower the flow rate as
indicated by the speed bar moving to the left.