The inner rings pick up a current and measure the conductivity of the liquid inside the buffer field. This completely eliminates the polarization which occurs in the 2-ring amperometric method. Without polarization, the probe can also measure a larger range of conductivity because it does not suffer from electrolysis. This 4-ring method is used in all of the following probes. The HI 76407 dissolved oxygen probe is specially shaped for BOD bottles making the meter and probe perfect for laboratory as well as field applications.
Calibration is fast and simple and all DO measurements are temperature compensated.
HI 76407 is offered with several cable lengths to meet your specific needs. These Probes are all specially constructed for excellent contact with the surface being measured. The several different options below are designed to meet all of your surface temperature measurement needs. If this happens, the probe may be damaged. Pipe Clamp Temp.