Bacharach MGS SERIES Specifikace stáhnout pdf (Strana 10)

MGS-250 Manual

10 6490-9000 Revision 1

1.2. Detection Options

1.2.1. Broadband vs. Gas Specific

The MGS-250 NDIR refrigerant gas detectors are available in two

versions: broadband and gas specific.

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

Refrigerant As Shipped Accuracy

1 P.-11 = 1

R123 ±30 ppm ±35%

R134a ±30 ppm ±25%

R404a ±30 ppm ±35%

R407a ±30 ppm ±25%

R407c

±30 ppm ±20%

R407f ±30 ppm ±20%

R410a ±30 ppm ±20%

R427a ±30 ppm ±15%

R507 ±30 ppm ±35%

2 P.-11 = 2

R422a ±30 ppm ±25%

R422d ±30 ppm ±20%

HFO1234YF ±30 ppm ±25%

HFO1234Ze ±30 ppm ±25%

3 P.-11 = 3 R22 ±30 ppm ±25%

1 See Section 5 for information on Parameter 11 and other configuration instructions.

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 59 60

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Bacharach MGS SERIES Specifikace Strana 10