9020M portable dissolved oxygen temperature tester from JENCO, USA

• 9020M can measure dissolved oxygen, air saturation, and temperature
• Correction value power-off memory function
• Automatic temperature compensation function
• Manual pressure and salinity compensation
• 50 sets of measurement data memory function
• Low battery warning
• Auto Power Off
• Waterproof body design
• Dissolved oxygen electrode of primary battery
• CMC, ROHS, CE certification

  specifications

• display	range	resolution	accuracy
  dissolved oxygen	0.00~20.00 ppm	0.01ppm	±0.5%FS
  air saturation	0.0~200.0%	0.1%	±0.5%FS
  temperature	-6.0~46.0℃	0.1℃	± 0.3 ℃ ± 1 word

• type of electrodes	Primary battery electrode
  Pressure Compensation	600~1100mBar adjustable, default value is 1013mBar
  Salinity compensation	0.0~40.0pppt adjustable, default value is 0.0ppt
  Correction data storage	have
  Measurement storage function	Yes, 50 groups
  automatic temperature compensation	have
  Sound feedback	All buttons
  power supply	9V battery
  work environment	0~50 ℃, relative humidity<90%
  size	186x70x37mm
  weight	About 260g (excluding battery)
  Standard configuration
  9020M	Host, LD-900G-1 electrode, LD-900G-1A electrode die, 9V battery, suitcase