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UEI Data Logger Quad Input Thermometer (DT304) -328 to 2498F

Model #: DT304

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UEI Data Logger Quad Input Thermometer (DT304) -328 to 2498F
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Category Thermometers

UEI APOLLO IV Hi-Range Quad Port Data Logging Thermometer, Model DT304 with Thermocouple Probes


  • 4 Thermocouple inputs
  • Data logging intervals can be programmed to store up to 9,999 memory positions
  • USB interface (software included)
  • Large backlit multi parameter display
  • Internal 24 hour clock
  • Thermocouple temperature offset
  • Accepts J, K, T and E type Thermocouples
  • MIN, MAX, AVG & Data Hold
  • Dual differential T1-T2, T3-T4
  • Convenient probe storage
  • F, K and C selectable
  • Low battery indicator
  • IP67 Water/Dustproof rating
  • Auto power off (can be re-programmed)
  • Relative mode
  • CAT 1 Overvoltage
  • CE Certified


  • Temperature measuring range K-Type Bead: -40 to +900F (-40 to +480C)
  • Temperature measuring range J-Type Probe: -346 to +2192F (-210 to +1200C)
  • Temperature measuring range K-Type Probe: -328 to +2498F (-200 to +1370C)
  • Temperature measuring range T-Type Probe: -418 to +752F (-250 to +400C)
  • Temperature measuring range E-Type Probe: -238 to +1832F (-150 to +1000C)
  • Temperature resolution:
    • at less than 1000: 0.1 F/C
    • at greater than 1000: 1.0 F/C
  • Accuracy*:
    • J, K, T, and E-Type; [0.1% +1.0F (0.5C)
    • Below -148F (-100C): add 0.2% of reading for J, K, and E-Type
    • 0.1% of reading for T-Type
  • Operating temperature range: 14 to 122F (-10 to 50C)
  • Storage temperature range: -40 to 140F (-40 to 60C)
  • Temperature Coefficient:
    • 0.01% of reading 0.1F per F (0.05C per C) for Less Than 64F (18C) or 82F (+28C)
    • Below -148F (-100C): add 0.05% of reading for J, K, and E-type; and 0.1% of reading for T-type
  • Humidity range:
    • Non condensing: less than 50F (10C)
    • 85% RH: 50 to 86F (10 to 30C)
    • 70% RH: 86 to 104F (30 to 40C)
    • 45% RH: 104 to 122F (40 to 50C)
  • Altitude:
    • Operating: up to 2000 m
    • Storage: up to 10000 m
  • IP67 Water submersion (3 for 30 min.)
  • Real time clock tolerance: about 1 second per day
  • High pressure dust resistance (max depression of 20 mbar for 8 hours)
  • CAT 1: Overvoltage (Installation) CATEGORY I, Pollution Degree 2 per IEC 1010-1
  • Dimensions: 7.20 x 3.70 x 1.70 (H x W x D)
  • Weight: approx. 16.2 oz (460 g)
  • Power: (2) "AAA" 1.5v
  • Certification CE
  • Safety:
    • IEC 1010-1 (2001), UL 3111-1 (6, 1994)
    • EN 61010-1 (2001), CSA C22.2
    • No. 1010.1 (1992)

Supplied with:

  • (4) K type probe with lead wraps
  • 5 year limited manufacturer's warranty
  • Software
  • 2 AAA batteries
  • Quick start guide

*Accuracy is specified for ambient temperatures between 64F (18C) and 82F (28C) for a period of 1 year. The above specifications do not include thermocouple error.

Download User's Manual (PDF format)

Apollo Series Software Download

UPC: 053533505634
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