Ametek 5000 Instrument Manual page 97

Configuring for Moisture Output in lb/MMscf
The 5000 Analyzer can convert moisture concentration in parts per million volume to pounds of
water per million cubic feet of sample, a unit of measure commonly used in the natural gas industry.
The relationship between ppmv and lbs/MMscf at 15.5°C (60°F) and 100 kPa absolute (14.7 psia) is:
1 lb/MMscf
Convr _factor = 0.0476 ppmv for MMscf Reading
The 5000 Analyzer is programmed to calculate moisture concentration in ppmv or ppbv. The follow-
ing procedure is used to configure the analyzer to convert output from ppmv or ppbv to lbs/MMscf
and the analog outputs and the analyzer display.
1. The factory set system values for conversion factor (Convr_Factor), and stored moisture
generator (Moist_Gen) must be multiplied by the above conversion factor. If the analyzer
was calibrated in ppmv, these system values must be multiplied by 0.0476.
a.
b.
2. Refer to Page 4-2: Display Flags to set flag for display line 1, 2, or 3 to either Held Mois-
ture (Flag = 1) or Live Moisture (Flag = 9). Refer to Page 4-6: Labels to change the dis-
play line format as follows:
= 21 ppmv
Refer to Page 4-4: Moist_Gen to change Moist_Gen to the new value.
Refer to Page 4-2: Constants to change Convr_Factor to the new value.
Options A-3