Millivolt adapters are used for connecting sensors to other manufacturers' data loggers or data acquisition systems; they are not needed with the LI-1400, LI-1500, or other LI-COR readout devices.
We provide two types of millivolt adapters: 1) a "matched" adapter that features a standardized 0-10 mV output (part numbers 2319, 2320, and 2321), and 2) an “unmatched” type that has a fixed resistor to convert the sensors' output to millivolts (part numbers 2220, 2290, and 2291).
The standardized (matched) millivolt adapters are paired with a specific sensor and individually adjusted to standardize the sensor output. This eliminates the need to enter unique calibration constants or multipliers for each sensor.
The fixed resistor type millivolt adapters (unmatched) can be used with any compatible sensor to convert the sensors' output to millivolts; they require that a unique calibration constant or multiplier for each sensor be entered into the logging device to convert the output into the units of measurement.