MGS-250 Manual
10 6490-9000
Revision
4
1.2.2. Broadband Gas Detection
The
broadband gas detector
(P/N 6401-0500) is used as a general
purpose gross leak detector and is factory tested and certified. It is
shipped from the factory with accuracy as shown in Table 1 (gas
dependent). If more accurate detection is needed, gas specific versions
are available, which are factory certified and calibrated to the target
refrigerant.
The broadband gas detector combines refrigerants into three groups
shown in Figure 2. Measurement performance is based on an
average
response
profile
for all of the gases within the group.
NOTE:
Greater accuracy may be achieved through the use of
calibration gas and the adjustment procedure detailed in
Section 6.
Table 1: Broadband Gas Groups and Performance (P/N 6401-0500)
Group #
Value for Param 11
1
Refrigerant
As Shipped Accuracy
1
P.-11 = 1
R123
±35%
R134a ±25%
R404a ±35%
R407a ±25%
R407c
r
20%
R407f
±20%
R410a
±20%
R427a ±15%
R507 ±35%
HFO1233ZD ±35%
R448A ±40%
R449A ±40%
2 P.-11
=
2
R422a ±25%
R422d ±20%
HFO1234YF ±25%
HFO1234Ze ±25%
R452A ±25%
R513A ±35%
3
P.-11 = 3
R22
±25%
4 P.-11
=
4 R32
±35%
1 See Section 5 for information on Parameter 11 and other configuration instructions.
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