Extech EA15 Dual Input Temperature Datalogger


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Extech EA15 Dual Input Temperature Datalogger This device offers dual thermocouple inputs with manual and automatic datalogging capabilities. 



  • Dual input accepts Types J, K, E, T, R, S, and N thermocouples
  • Built-in datalogger stores up to 8800 data sets
  • RS-232 port to transfer data to PC for analysis
  • Real Time Clock
  • Includes Windows® 95/98/NT/2000/ME/XP compatible software and cable
  • Compact and rugged design features large backlit display
  • Displays [T1 plus T2] or [T1-T2 plus T1] or [T1-T2 plus T2]
  • Selectable units of °F, °C, K (Kelvin)
  • Wide temperature range with 0.1°/1° resolution
  • Timer function displays elapsed time plus the time when MIN and MAX readings are taken
  • OFFSET key used for zero function to make relative measurements
  • Data Hold function freezes reading on display
  • Auto Power off to save battery life
  • Low battery and overrange indication
  • Records Max/Min readings for later recall

Click here for product datasheet


Measurement Ranges
K - Type -200.0°F to +1999.9°F (-150.0°C to +1370.0°C)
J - Type -200.0°F to +1994.0°F (-150.0°C to +1090.0°C)
T - Type -200.0°F to +752.0°F (-150.0°C to +400.0°C)
E - Type -200.0°F to +1598.0°F (-150.0°C to +870.0°C)
R - Type +32°F to +1999.9°F (0.0°C to +1767.0°C)
S - Type +32°F to +1999.9°F (0.0°C to +1767.0°C)
N - Type -200.0°F to +1999.9°F (-150.0°C to +1300.0°C)
J, K, T, E, N - Type 0.1°F/°C/K
R, S - Type 1.0°F/°C/K (0.1° for reference only)
J, K, T, E, N - Type ±(0.05% reading + 1.5°F(0.75°C)) below -148°F (-100°C)
J, K, E, N - Type add ±0.15%
T - Type add ±0.45%
R, S - Type add ±(0.05 of reading +2°F(1°C))
Temperature Coefficient
Outside the specified range
+64°F to 82°F (+18°C to 28°C)
±(0.01% of reading +0.06°F per °F (+0.03 °C))
Below -148°F (-100°C)
J, K, E, N - Type 0.04% of reading
T - Type 0.08% of reading
Display Dual Display Multi-function LCD with Backlight
Input Protection 60VDC, 24VAC rms
Measurement Rate 1 time per 1.5 second
Over range indication "OL" appears on the LCD
Open input indication "OL" appears on the LCD
Low battery indication “BT” appears on the LCD
Manual Memory Capacity 98 sets
Datalogging Memory Capacity 8800 sets
Power supply 6 ‘AAA’ Batteries
Battery life Approximately 200 hours with alkaline batteries
Operating Temperature 32 to 122°F (0 to 50°C)
Operating Humidity < 80% RH
Storage Temperature 14 to 140°F (-10 to 60°C)
Storage Humidity 10 to 80% RH
Dimensions 5.91 x 2.8 x 1.4" (150 x 72 x 35mm)
Weight Approx. 8.29 oz. (235g) with batteries


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  • Extech EA15 Dual Input Temperature Datalogger