Extech Instruments NON-DISPLAY PORTABLE Guide de l'utilisateur Page 1

USER GUIDE Dual Input, 3-Display Thermometer/Datalogger Model 421509  Accepts J, K, T, E, R, S, & N thermocouples  Internal Memory

421509-EN v2.3 07/13 10Operation 1. Select the correct COM port 2. Press the “START” button 3. Press the T1 INPUT, T2 INPUT or T1-T2 button to op

421509-EN v2.3 07/13 11Record Function (Data Acquisition) Button Description FILE NAME Select Default or User Name for Data Acquisition USER FILE

421509-EN v2.3 07/13 12Battery Replacement Replace the battery when the low battery indication symbol appears on the upper left corner of the displa

421509-EN v2.3 07/13 2Introduction Congratulations on your purchase of Extech’s Dual Input, 3-Display, Hand-Held Digital Thermometer/Datalogger. Thi

421509-EN v2.3 07/13 3Specifications General Specifications Display 4-1/2 digit (19,999), 3-Display, LCD with EL BacklightingInput Protection 24V

421509-EN v2.3 07/13 4Operation There are three operation modes—Normal, Shift, and Setup mode Normal Mode This is the default mode. The operating f

421509-EN v2.3 07/13 5HOLD Mode (Main Display only) Press the HOLD button to enter the Data Hold mode, the "HOLD" annunciator will display

421509-EN v2.3 07/13 6Shift Mode The operating functions for the shift mode are printed in yellow on the buttons. When in normal mode, push the SHIF

421509-EN v2.3 07/13 7Lo LimitPin 3 (+)Pin 4 (-)Figure 4Hi LimitPin 1 (+)Pin 2 (-)Figure 3Pin 5Pin 1Figure 1Pin 2Pin 4Pin 6Pin 3Pin 5 (+)Pin 6 (-)Fi

421509-EN v2.3 07/13 8Interval Time Setting To set up the interval time for the log function, press the [INVT] button. The indicator “INV” will blin

421509-EN v2.3 07/13 9RS-232 PC Interface The Model 421509 Thermometer is supplied with a sophisticated Windows® software package on CD-ROM. A commu