High Accuracy PT100 RTD Input Thermometers

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HIGH ACCURACY PT100 RTD INPUT THERMOMETERS

The Omega HH804U is a high accuracy RTD input thermometer. These handhelds work with platinum PT100 RTDs and are selectable for 3 different temperature coefficient curves. These units comply with ITS-90. Both come standard with a built in USB port and DC power jack. Optional Windows software and AC adapter allow real time data logging to PC for extended periods. The HH804W model features a quick and easy to use wireless interface instead of USB. This allows real time data transmission at distances of up to 75′.

HIGH ACCURACY PT100 RTD INPUT THERMOMETERS

The Omega HH804U is a high accuracy RTD input thermometer. These handhelds work with 100 . platinum PT100 RTDs and are selectable for 3 different temperature coefficient curves. These units comply with ITS-90. Both come standard with a built in USB port and DC power jack. Optional Windows software and AC adapter allow real time data logging to PC for extended periods. The HH804W model features a quick and easy to use wireless interface instead of USB. This allows real time data transmission at distances of up to 75′.

TOP FEATURES:

  • Programmable Alarms: Audible Hi/Lo limit alarms that alert the user when thresholds are exceeded.
  • Data Management: Functions include MAX/MINAVG (average), REL (relative), and HOLD.
  • Curve Selection: User-selectable for three different temperature coefficient curves (Pt385, Pt3926, and Pt3916).
  • Durability: Includes a protective rubber boot and is powered by 4 “AAA” batteries with approximately 200 hours of life.

Technical Sheets

Instruction Manual and Datasheet

Specifications

HIGH ACCURACY PT100 RTD INPUT THERMOMETERS – KEY SPECIFICATIONS

For the Omega HH804U, the following key specifications are current for 2026:

  • Accuracy: High-precision ±0.05% of reading + 0.2°C (0.4°F).
  • Sensor Type: 4-wire Platinum RTD (Pt100) with 385, 3926, and 3916 curves.
  • Measurement Range: -328 to 1472°F (-200 to 800°C).
  • Resolution: Selectable 0.01° or 0.1°.
  • Connectivity: Integrated USB interface (Windows 11/12 compatible) and DC power jack.
  • Inputs: Dual-channel (T1, T2) with differential calculation (T1-T2).
  • Functions: Data logging, Hi/Lo audible alarms, Max/Min, Average, and Relative (REL).
  • Dimensions: 160 x 83 x 38 mm (6.3 x 3.3 x 1.5″).

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