Installing the Submersible Tank Level Sensor

When to use this one

Most tanks suit the ultrasonic Tank Level Sensor, which never touches the liquid. The submersible sensor is the better pick when the distance from the top of the tank down to the lowest level you care about is more than about 23 ft, when the surface freezes in winter (the sensor keeps reading under ice), or when there is no clear path from the roof down to the surface.

Install it

1. Wake the device. It may be in sleep mode. Open the cover and press the button on the black box for 5 seconds. Wait until the light goes green and flashes blue (this is a reset). Then screw all four cover screws back in securely.
2. Attach the antenna to the communications box, hand tight.
3. Make a hole in the top of the tank to pass the pressure sensor through. A 30 mm (1 3/16 in) drill bit is recommended.
4. Lower the sensor to the bottom of the tank on its cable.
5. Fasten the communications box on top of the tank with two to four screws. Custom brackets may be needed for open or unusual tanks.
6. Check the dashboard for a reading, then enter the tank’s details in the app (the steps are the same as the ultrasonic sensor’s app setup: tap the pencil icon on the device, enter the tank height and volume, save).

Alarms and troubleshooting

Alarms are set the same way as on the ultrasonic sensor: open the device, tap the pencil icon, choose above or below a level, or a rapid change, and enter the trigger percentage. See the alarm steps.

If there is no data, check the antenna, check the battery voltage on the last reading is above 2.9 V, and hold the button for five seconds to reset. Allow up to 15 minutes for the next reading.