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Model 421509 Version 1.1 09/04
10
Operation
1. Select the correct COM port
2. Press the “START” button
3. Press the T1 INPUT, T2 INPUT or T1-T2 button to open the control window
Button Description
MAX MIN Activate Max/Min reading with time
AVG Activate Average reading measurement
REL Activate Relative mode
HI/LO Activate Hi/Lo limit comparative mode. The limit will also be visible
on the graphical display as red (HI) and blue (LO) horizontal lines.
The display value will blink between red and blue when the input
temperature value exceeds the LO value.
TYPE Select the K/J/T/E/R/S/N type thermocouple
GRAPH Open the graph sub-window