Galvanic Applied Sciences ProTech903, Руководство по эксплуатации

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Revision 14
99 August 02, 2019
It is essential that the correct power source and duty cycle be chosen. If
40% duty cycle is entered in the Furnace Pulse Width Field for a 230VAC
system, the furnace will run far too hot and the furnace element and/or the
quartz reaction tube will be damaged or destroyed. If 10% duty cycle is
entered for a 110VAC system, the furnace will not run hot enough to
adequately convert sulfur compounds to H
2
S.
•
Trend Filter Length -
This field determines the weighting the current reading has in the
calculation of the historical trend. The larger this number is, the smaller the weighting the
current value has in the calculation of the historical trend. The trend is a form of data
filtering that smoothes the long-term data to show a long-term trend in concentration. This
value should not be changed except after consultation with the Galvanic Applied Sciences
service department.
•
Purge Time - This field determines the length of time the analyzer should be purged after a
stream switch. When a stream switch occurs, the analyzer will advance the tape, then
purge with the new gas for as many seconds as the number in this field, then advance the
tape again before starting to analyze the new stream. The longer this number is, the better
the results will be on the next stream. A minimum time in this field should be about 30
seconds.
5.9.1.1 Tape Box
The
Imperial (Feet)
and
Metric (Meter)
radio buttons are used to indicate the units used for
the tape box. Selecting between the two systems of measurement will change the displayed
unit for ALL tape length-related fields and automatically convert the numerical value in each
field to the selected system of measurement. By default, the analyzer is set up to use
imperial units for tape.
• Stain Width - shows the width, in feet or meters of a single stain on the tape. This field is
calculated based on values in the next two fields.
•
Capstan Diameter – shows the diameter of the tape counter capstan (item #6, figure 3-15),
in inches (Imperial) or millimetres (Metric). This value is measured using precise digital
calipers at the factory, and must be re-measured if the capstan is replaced for any reason.
After a new value is entered in this box, the
Accept
button must be pressed to re-calculate
the value in the
Stain Width
box.
• Tape Advance in Pulses – shows the number of pulses the tape counter is set to receive
prior to stopping the tape advance. A single full rotation of the capstan produces 256
pulses. The larger the number in this box, the more tape that will be pulled between
analyses; the smaller the number, the less tape that will be pulled and thus the greater the
stain overlap will be. This value is set at the factory and should not be changed unless
instructed by Galvanic Applied Sciences personnel. After a new value is entered in this box,
the
Accept
button must be pressed to re-calculate the value in the
Stain Width
box.
By default, the value in this box is set to 45. The acceptable input range for values in this
box is from 1 to 99. If a value outside this range is input, the field will turn yellow, indicating
that an invalid value has been entered. Enter a value within the acceptable range and press
the Accept button to clear this error.