Extech Instruments 421509 Manual do Utilizador descarregar pdf (Página 10)

Model 421509 Version 1.1 09/04

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

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Extech Instruments 421509 Manual do Utilizador Página 10