CHAPTER 3: USING UNIFLOW
®
2 PROGRAMMING FUNCTIONS
UNIFLOW
®
2 PULSED THERMODE CONTROL
3-6
990-228
HEATING RATE Key
The
HEATING RATE
key brings up the
MANUAL TUNING
screen. This screen
allows you to go to the
SET COARSE HEATING RATE
and
SET FINE HEATING
RATE
heating rate capability to match the heat generating capability of the
thermode to minimize the temperature overshoot and undershoot.
For example, given a very small peg-tip thermode with a heat generating tip diameter of 0.020 inch
(0.5mm), the
COARSE
heating rate should range from
SLOW
to
MEDIUM
to prevent sever temperature
overshoot.
Conversely, given a very large fold-up thermode
with a tip face of 0.12 inch by 2.37 inch (3mm
by 60mm) requires a coarse heating rate of
FAST
to produce the optimum temperature profile
response.
Selecting
1
on the
MANUAL TUNING
screen brings
up the
SET COARSE HEATING RATE
screen
.
<SET COARSE HEATING RATE >
1. Very Slow
2. Slow
3. Medium
4. Fast
NUMBER Select ,
Page, Graph or Data
The progression from
Very Slow
to
Fast
provides more energy to heat the thermode. The table below is
a guide to optimize the coarse heating rate. Change
COARSE HEATING RATE
to optimize temperature
profile output.
The default value is
Medium
, which is appropriate for 90% of all thermodes. The progression from Very
Slow
to
Fast
provides more energy to heat the thermode. Use the table below as a guide to optimizing
the coarse heating rate. Select the recommended coarse heating rate by pressing keys
1
through
4
.
Coarse Heating Rate
Thermode Family Series
Very Slow
Slow
Medium
Fast
17T
17P
17BM, up to 10 mm (0.37 in.)
17BM, 10 to 30 mm (0.37 to 1.2 in.)
17BW, 30 to 60 mm (1.2 to 2.4 in.)
17BW, 60 to 100 mm (2.4 to 4.0 in.)
*
17F, up to 10 mm (0.37 in.)
17F, 10 to 30 mm (0.37 to 1.2 in.)
17FW, 30 to 60 mm (1.2 to 2.4 in.)
17FW, 60 to 100 mm (2.4 to 4.0 in.)
*
NOTE:
17BW and 17FW thermodes, 60 to 100 mm long, can
only
be heated using Model 1-292-01-01.
