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The proportional band width is easily adjusted from the front panel. Set the width to discrete values in
degrees C or F, which depends on the selected units. The proportional band adjustment is accessed
within the secondary menu. Push SET and EXIT to enter the secondary menu and show the heater
power. Then push SET to access the proportional band.
Push SET and EXIT
12.0 P
Push SET
ProP
5.0
To change the proportional band, push UP or DOWN.
4.0
To accept and store the new setting push SET. Push EXIT to continue without storing the new value.
Controller Configuration
The controller has several configuration and operating options and calibration parameters which are
programmable through the front panel. To access these, push SET from the secondary menu after the
proportional band. Push SET again to enter the first of three sets of configuration parameters:
operating parameters, serial interface parameters, and calibration parameters. To select the menus,
push UP and DOWN and then push SET (see Figure 6).
Operating Parameters
The operating parameters menu is indicated by,
PAr
Operating parameters menu
The operating parameters menu contains the High Limit and Stir Speed parameters.
High Limit
The High Limit Parameter adjusts the upper set-point temperature. The factory default and maximum
temperature are set to 126 °C (259 °F). For safety, adjust the HL down so the maximum temperature
set-point is restricted.
HL
High Limit parameter
Push SET to enable adjustment of HL
HL
Flashes HL and displays the setting
H=126
Current HL setting
Adjust the HL parameter with UP or DOWN
H=90
New HL setting
Push SET to accept the new temperature limit.
Access heater power in secondary menu
Heater power in percent
Access proportional band
Flashes ProP and the setting
Proportional band setting
New proportional band setting
Micro-Bath
Controller Configuration
27
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