Inficon D-TEK Stratus - Page 7

INFICON Specifications | 3
074-708-P16A D-TEK Stratus Operating Manual 7 / 394
Specification table in accordance with EN 14624
R134a R1234yf
Minimum sensitivity, fixed (static) 1 g/yr. 0.5 g/yr.
Maximum sensitivity, fixed (static)
4
>50 g/yr. >50 g/yr.
Minimum sensitivity, moving (dynamic) 1 g/yr. 1 g/yr.
Maximum sensitivity, moving (dynamic)
4
>50 g/yr. >50 g/yr.
Minimum response/detection time < 1 s < 1 s
Zeroing time 1–4 s 1–4 s
Recovery time for 50 g/yr exposure
5
7.6 s 6.4 s
Minimum sensitivity in contaminated
environment
>2 g/yr. 1 g/yr.
Calibration frequency Check annually with calibrated leak
standard
4
The upper leak detection limit is not specified by INFICON as there is no upper limit
to the size of the leak the detector is able to detect.
5
As no 50 g/yr. leak standard was available during testing, a 32 g/yr leak standard was
substituted.
SAE Applications
SAE standards J2791 (R-134a) and J2913 (R-1234yf) specify sensitivity to the
following leak sizes for the corresponding settings below.
Super
sensitivity is more
sensitive than what is required by SAE for leak checking in a clean environment (free
of background refrigerant). If leak checking in a contaminated environment (high
background refrigerant), switch to
Super
sensitivity
R-134a leak rate (g/yr) R-1234yf leak rate (g/yr) Sensitivity Setting
14 14 low
7 7 medium
4 4 high
The following table lists some common under-hood chemicals and indicates whether
or not they will cause a false-trigger from D-TEK Stratus.
Perform the leak test
with the engine turned
off.
Chemical False-Trigger
windshield washer solvent (methanol base) yes
Ford™ spot and stain remover yes
Ford rust penetrant and inhibitor yes
Ford gasket and trim adhesive yes
Permatex™ natural blue cleaner and degreaser yes
Ford brake parts cleaner yes
Ford spray carburetor tune-up cleaner yes
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