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Portable Atmospheric and Dissolved Oxygen Meter - LCD 0.5" Readout

• EPA approved 
• Ideal for aquaculture, waste water treatment and industrial processes 
• Maintenance-free electrode 
• Optional recorder output 
• Automatic temperature compensation 
• Visual low battery warning 
• Two year warranty on meter

Oxygen Controllers

• EPA approved 
• Measures atmospheric oxygen (Model 1630 also measures dissolved oxygen) 
• All controls are programmable from front panel 
• Electrodes virtually maintenance free - no filling solutions or membranes to change 
• Dual four-digit LED displays for process variable, set point 
• Two independent set points (Low-High, High-High, Low-Low) 
• Auxiliary alarm point 
• Optional outputs: SSR, relay, logic, current or voltage 
• Calibration easily adjusted by screwdriver 
• Upper display indicates process value or value of menu item selected 
• Lower display indicates set value or menu item selected

HI9142 Waterproof, Dissolved Oxygen Meter

• Water Resistant Casing The rugged construction is water resistant, making it indispensable in the biological water treatment industry.
• One Point Calibration With the probe in saturated air, the meter can be calibrated without the need for chemical solutions.
• ATC Circuitry The meter's built-in Automatic Temperature Compensation circuitry will adjust all readings to provide the utmost accuracy.
• Low Battery Indicator The low battery indicator gives the user advanced notice to avoid taking an erroneous reading due to low power.

HI 91410 Printing and Logging Dissolved Oxygen Meter

• Logging Capability:
  Up to 16,000 readings can be stored in the datalogger's memory for retrieval at a later date.
• Documented Monitoring:
  Ideal for constant monitoring of O₂ levels. It prints date, time, sample #, mg/l O₂ & ºC.
• RS232 Computer Interface:
  The HI 9200 infrared data transmitter (optional) will send the information into a standard PC in seconds
• Special Features:
  Altitude and salinity factors are automatically compensated for.

HI8043 Dissolved Oxygen Meter for the Education Field

• ATC Circuitry The meter's ATC feature assures the user of getting accurate temperature-compensated readings.
• Low Battery Indicator A built-in low battery indicator prevents a low battery from causing erroneous readings.
• Probe Made for Use with BOD₅ bottles The conic shape of the D.O. probe makes it perfect for all BOD₅ applications.
• Accurate Thermometer HI 8043 is also an accurate thermometer with an accuracy of ±0.5°C

Waterproof, Microprocessor Dissolved Oxygen Meters

• Battery or VDC power When used for extended periods of time, there is no need to interrupt important tests, simply plug into a 12 VDC battery charger.
• Automatic Calibration Simply expose the probe to saturated air and press the CAL button. No need for messy solutions or tedious calibration processes.
• Multiple Range You can read in % of saturation or directly in mg/L of dissolved oxygen. The meter can also be used as an accurate thermometer.

HI 964400 Easy-to-use Bench Dissolved Oxygen Meter

• Direct dissolved oxygen measurements in ppm or in %
• Large and easy-to-read LCD display
• Automatic calibration for D.O. and temperature in seconds with automatic value recognition
• Automatic compensation for temperature, altitude and salinity variations
• Logging of up to 8000 samples divided into 99 lots
• PC Communication with RS232C serial interface & Windows^® compatible software

Portable Atmospheric Oxygen Meter

• EPA approved 
• Measure 0-100% atmospheric oxygen 
• Maintenance-free galvanic electrode 
• 3-5 year electrode life 
• Easy to operate 
• Optional recorder output (0-200 mV) 
• Two year warranty on meter, 1 year warranty on electrode