Extech Instruments 421509 User Manual Page 1

User’s Guide Dual Input, 3-Display Thermometer/Datalogger Model 421509 • Accepts J, K, T, E, R, S, & N thermocouples • Internal Mem

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

Record Function (Data Acquisition) Button Description FILE NAME Select Default or User Name for Data Acquisition USER FILE Saved in .xls format INT

Model 421509 Version 1.1 09/04 2 Specifications General Specifications Display 4-1/2 digit (19,999), 3-Display, LCD with EL Backlighting Input P

Model 421509 Version 1.1 09/04 3 Safety Information Please read the safety and operational instructions before using this device. WARNING To avo

Model 421509 Version 1.1 09/04 4 Operation There are three operation modes—Normal, Shift, and Setup mode Normal Mode This is the default mode. Th

Model 421509 Version 1.1 09/04 5 HOLD Mode (Main Display only) Press the HOLD button to enter the Data Hold mode, the "HOLD" annunciator

Model 421509 Version 1.1 09/04 6 Shift Mode The operating functions for the shift mode are printed in yellow on the buttons. When in normal mode,

Lo LimitPin 3 (+)Pin 4 (-)Figure 4Hi LimitPin 1 (+)Pin 2 (-)Figure 3Pin 5Pin 1Figure 1Pin 2Pin 4Pin 6Pin 3Pin 5 (+)Pin 6 (-)Figure 25to30VSetup Mode T

Model 421509 Version 1.1 09/04 8 Interval Time Setting To set up the interval time for the log function, press the [INVT] button. The indicator “I

Model 421509 Version 1.1 09/04 9 RS-232 PC Interface The Model 421509 Thermometer is supplied with a sophisticated Windows® software package on di