Mantracourt Electronics Limited
T24-RA User Manual
12
you to select your own battery capacity. See below. This will also offer to
change the Battery Low Level if the level suitable for the chosen battery is not
the level currently set.
Usable Capacity
This is not a parameter of the device but information used by the battery life
guide. This is the capacity of the battery in Amp Hours and has a profound
effect on battery life calculations. This capacity needs to be calculated from
battery manufacturer’s data sheets to take into account that we can only use
batteries down to 2.1 Volts so in the case of twin AA cells this would be 1.05
Volts.
Generally the usable capacity will not be as high as that advertised by the
battery manufacturer. Temperature and internal resistance of the battery are
not taken into account in the guide.
Sensor Impedance Ohms
Although the Impedance will vary an estimate of the average sensor
impedance will provide a good indication of battery life.
Usage Per 24 Hour Period
Enter the number of hours per 24 hour period that the T24-HS handheld will
be turned on and communicating with an acquisition module.
