Temperature and Humidity Sensor
The following battery life calculations are based on reading/reporting one register or reading/reporting the contents of all three registers.
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
.125
.500
1
4
8
16
64
Reading 1 register
Reading 3 registers
DX81 Batter
y Lif
e (Y
ears)
Sample and Report Rate (sec)
These values are estimated based on the current hardware and software configuration and are subject to change without notice. Environ-
mental conditions will also contribute to the battery’s lifespan. Current estimates are based on a battery operating at room temperature.
All battery life calculations are approximations based on a strong radio signal. Weaker radio connections and missed packets will de-
crease the battery life.
Calculating Battery Life
To estimate the battery life for a sensor not included in our list, use the configuration and cable shown (Banner cable BWA-HW-010) to
measure the current draw of your system.
1. Connect the cable to the FlexPower Node and the battery supply module as shown below. The cable’s male end plugs into the Flex-
Power Node and the female end plugs into the battery module.
2. Connect an averaging Fluke meter to the leads. Set the meter to read in amps, not milliamps.
3. Turn off the Node’s LCD panel by clicking button 2 five times.
4. Allow the meter to measure the operation for at least 10 times the length of the sample rate.
To estimate the battery life in hours, use the following equation: Battery Life (in hours) = (16,000 mA Hr) ÷ (average current in mA)
To estimate the battery life in years, use the following equation: Battery Life (in years) = (16,000 mA Hr) ÷ [(average current in mA)(8736
Hr per year)]
SureCross Wireless I/O Network Manual
rev. I
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