HQ Hand held measurement instrument

Hand held instrument HQ40d and HQ30d

A hand-held instrument for measuring oxygen, salinity, pH and redox. Available with various sensor cable lengths.

Compensates automatically for pressure and temperature. When measuring oxygen, both % saturation and mg/liter is displayed. Sensors are ordered separately.

Sensor channels

  • HQ30d: 1
  • HQ40d: 2

Technical data

  • Barometric pressure measurement: For automatic DO compensation
  • Battery: 4pcs AA
  • Conductivity accuracy: ± 0.5 % from (1µS/cm – 200 mS/cm)
  • Memory: 500 results
  • Sensor input: HQ40d 2, HQ30d 1
  • Measurements (H x W x D): 197mm x 95mm x 36mm
  • Display: Measurements from on or to probes
  • Simultaneous measurements from two probes ( HQ40d only)
  • pH: pH, mV, temperature
  • Conductivity: salinity and temperature
  • LDO: dissolved oxygen, pressure, temperature
  • ORP/Redox: mV, temperature
  • Continuous measurement, “press to read” and interval mode
  • Display type: 240 x 160 pixels
  • IP67
  • Languages: English, French, German, Italian, Spanish, Danish, Dutch, Polish, Portuguese, Turkish, Swedish, Czech, Russian
  • mV accuracy: ± 0.1 mV
  • mV measuring range: -1500 to 1500 mV
  • mV viewing: 0.1 mV
  • Temperature: 0 – 60 C°
  • Output: USB to PC / memory stick( only HQ40d)
  • Weight: 335 grams

More details

  • Quick measurement results
  • Optical sensor
  • No calibration of oxygen sensor
  • User-friendly
  • Robust



Rune Stangvik

Rune Stangvik

Senior Sales Advisor – Products, aftermarket & service


Jorge Flores

Jorge E. Flores N.

Sales and Operation Manager– Imenco Aqua Chile

Juan Carlos Reyes

Juan Carlos Reyes

Product Manager - Imenco Aqua Chile

Get in touch with us or email us at sales.aqua@imenco.com

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