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Digital Temperature/Humidity Probe

Digital Temperature/Humidity Probe

The EI-1050 is a selectable digital relative humdity and temperature probe intended for use with the Labjack U12. On board is a single chip sensor module with a selector chip and buffering components. The single chip sensor is manufactured by Sensirion that provides a 14 bit for temperature digital output reading or 12 bit humditiy digital output reading.

The sensor is housed in a plastic tube (4.5" by 0.625") attached to a 6 ft cable. The device consist of two calibrated microsensors for humidity and temperature with serial digital output, resulting in superior signal quality, a fast response time and insensitivity to external distubrances.

Each sensor is calibrated in a precision humidity chamber and the calibration coefficients are programmed into the OTP memory. The interface to the EI-1050 is a 5-wire connection consisting of 5 volt, ground, clock, data and enable. By using the enable line multiple probes can be connected to the LabJack at once.

Specifications:

  • Relative Humidity Sensor (RH)
    • Range: 0 to 100 %RH
    • Accuracy: ±3.5 %
    • Response time: ≈4 seconds
    • Reproducibility: ±0.1 %RH
    • Resolution: 0.03 %RH
  • Temperature Sensor
    • Range: -40 °C to 120 °C
    • Accuracy:
0.5 °C @25 °C or 0.9 °C from 0 to 40 °C
  • Response time: ≈20 seconds
  • Reproducibility: ±0.1 °C
  • Resolution: 0.01 °C
  • Cable Interface (LabJack U12 Terminal):

    Power Red: +5V
    Ground Black:GND
    Data Green: IO0
    Clock White: IO1
    Enable Brown: IO2, IO3, AOx, Dx, or +5V for always enable

    Document:

    Download datasheet

    Support:

    SKU: LAJ-005

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