User`s guide

MASSA PRODUCTS CORPORATION
Product Manual- April 24, 2012 18 M3 Wireless Ultrasonic Level Sensor
APPENDIX A
Miscellaneous Sensor Information
Battery Life and Suggested Replacement Voltage
Below are the battery life estimates using Energizer L91 batteries with the data acquisition rate programmed to the same
time as the wake up time.
Status messages will include reporting the battery voltage. It would be a good idea to replace all three batteries when the
sensor reports back with voltages below 3.5V. RF range becomes reduced with voltages below 3.2V.
To replace batteries, open cover using slotted screwdriver and remove existing batteries. Press commission button to
discharge any residual voltage and then install batteries in polarity shown in battery holders, see photo to right below.
Close and secure cover.
Diagnostic Mode – Sensor Waveforms
This table shows the waveform types that will be created and stored in the Manage Files memory location.
Waveform to save ▬►
#1 #2 #3 #4
Sensor Model
Transmit
cycles
Gain
Transmit
cycles
Gain
Transmit
cycles
Gain
Transmit
cycles
Gain
M3/150 and M3/150is 1 low 10 high - - - -
M3/95 and M3/95is 1 low 10 low 10 high 20 high
M3/50 4 low 1 low 10 low 10 high
Wake up and report status rate
24 hrs 12 hrs 8 hrs 6 hrs 4 hrs 1 hrs 1 min
Battery life at 80%
battery efficiency
3.63 yrs 3.60 yrs 3.58 yrs 3.56 yrs 3.52 yrs 3.17 yrs
4.36
months