3-16
3.2.8 Saturator Fill
The saturator filling procedure should be performed upon initial use after installation, and
approximately every 500 hours or more of operation thereafter, depending upon the humidities
and flow rates generated. Generating high flow rates and high humidity values requires more
frequent filling.
The generator may require up to ten ounces (300 cc) of pure water (triple distilled or better) per
fill. The amount of run time available from each fill is dependent upon the Frost/Dew Point
being generated (during a Purge, it is based upon the saturation temperature). Colder
temperatures (lower humidities) require less water than do higher temperatures (higher
humidities).
The following table illustrates the approximate run time available at various generated humidity
values. The amount of water used is also dependent upon flow rate. For instance, using only
0.5 liters/min gives twice as much run time as listed below, while using 2.0 liters/min gives only
one half as much run time as listed.
Dew/Frost Point
Approximate Continuous
Generated
Run Time @ 1 liter/min flow
+15 °C
400 hours (2 weeks)
+10 °C
500 hours (3 weeks)
0 °C
1000 hours (1.5 months)
-10 °C
2500 hours (3.5 months)
-30 °C
17,000 hours (2 years)
-50 °C
150,000 hours (17 years)
-70 °C
2,500,000 hours (285 years)
Even though the lower temperatures make it appear that the system would never require filling;
remember that a Purge always starts first at the higher temperatures to remove excess condensed
water within the saturator passages and outlet tubing. Under these circumstances, the saturator
water will eventually be depleted even if the lower temperatures are all that is ever generated.
3.2.8.1 Saturator Fill Procedure
1) Put the system in a Purge mode, using the [PRG] key if the system is idle, or the [PRG*
GEN] if currently in the Generate mode. Within a few seconds, the Purge screen
appears.
SetPnt Actual
*FRST PT
o
C -10.00
DEW PT
o
C -11.23
PPMv 2581.
PPMw 1605.
%RH 10.39
SATUR psi 70.29
14.60
SATUR
o
C 10.00
10.00
TEST psi 14.70
TEST
o
C 21.10
FLOW l/m 1.000
1.001
03/25/11 15:23:42 [294.6]
CHNG
SETP
CLR
PRG*
GEN
STOP
