Xylem XL Series H-522 - Plus - Manual (Page 238)

22-4 Functions
XL™ Series
Built In Specific Sensor Functions:
When a sensor is used in several applications it may be easier to build an equation into
the operating system for that sensor rather than have customers enter the equation
every time the sensor is used. The following temperature equations are for thermistor
based temperature probes. When using one of these temperature probes see the app
note for its full details.
h377c(anaX): Convert the voltage on analog channel X from the H-377 thermistor
probe to temperature in degrees Celsius. The following is the actual equation used:
h377f(anaX): Convert the voltage on analog channel X from the H-377 thermistor
probe to temperature in degrees Celsius. This function uses the same equation as the
function above, but uses the following conversion from degrees C to degrees F:
tp20b(anaX): Convert the voltage on analog channel x to a temperature based on the
built in voltage to temperature equation TP20B. The following is the actual equation:
tp20m(anaX): Convert the voltage on analog channel x to a temperature based on the
built in voltage to temperature equation TP20M. This is a temperature probe used by
the Maine district of the United States Geological Survey. The actual equation is: