Remote Tank Level Monitoring with 4G Tank Level Sensor and ProSight

A missed refill, an unnoticed leak, or a manual reading taken too late can disrupt an entire operation. Tanks often sit on farms, mine sites, depots, utilities, treatment plants, and remote facilities where daily inspection is costly or unsafe. When level data is only available through site visits, the organisation is already working with a delay.

Remote tank level monitoring solves that delay by turning tanks into connected assets. With a 4G tank level sensor and the ProSight cloud, operators can view current tank levels, receive low-level alerts, and track usage patterns without sending staff to check gauges or climb tank ladders.

The core system is straightforward. An ultrasonic or submersible level sensor measures the liquid level. A 4G telemetry device sends that reading to ProSight. The cloud platform then presents the data through dashboards, alerts, reports, and consumption history.

For water, diesel, chemicals, wastewater, and general liquid storage, this creates a more reliable way to manage inventories, deliveries, compliance checks, and operational continuity.

Connected tank sites allow operators to check levels without attending site.

How 4G tank level monitoring works

A remote level monitoring system has four main parts:

• Level sensor

• 4G telemetry unit

• Power source

• ProSight cloud platform

  
  

The level sensor converts the physical level in the tank into an electrical signal. Common outputs include analogue signals such as 4 to 20 mA, pulse signals, or digital protocols, depending on the sensor and installation. The telemetry unit reads the signal at set intervals and transmits the data over the 4G mobile network.

ProSight receives the data, time-stamps it, and stores it in the cloud. From there, users can check tank levels through a dashboard, inspect trends, set alert thresholds, and review historical usage.

A typical reading cycle looks like this:

1. The sensor measures tank level.

2. The telemetry device records the value.

3. The device sends the reading through the 4G network.

4. ProSight updates the dashboard and history.

5. Alerts trigger if the value crosses a configured threshold.

   
   

The reporting interval can be set to suit the application. A critical chemical dosing tank may need frequent readings. A large rainwater tank on a remote property may only need updates a few times per day. Battery life, data use, operational risk, and response time all influence the best interval.

A 4G tank level sensor is especially useful where Ethernet or Wi-Fi is not available. Many tank sites are away from buildings, outside plant rooms, or spread across large areas. Using 4G avoids the need to trench cables or build local network infrastructure just to retrieve a level reading.

Ultrasonic level sensors suit non-contact measurement

Ultrasonic sensors sit above the liquid and measure the distance from the sensor face to the liquid surface. The sensor emits a sound pulse, then calculates level based on how long the echo takes to return.

This non-contact method suits many clean and manageable liquids, including:

• Potable water

• Bore water

• Rainwater

• Diesel

• Some chemicals

• Sump and process tanks where foam is limited

  
  

The main benefit is that the sensor does not touch the liquid. That reduces fouling, corrosion risk, and maintenance in many applications. It also keeps the sensor accessible from the top of the tank.

For a water tank monitoring system, ultrasonic sensing is often a practical choice. It can provide continuous level readings from household-scale tanks through to larger agricultural, municipal, and industrial storage systems, provided the installation conditions are suitable.

Good ultrasonic performance depends on correct mounting. The sensor needs a clear path to the liquid surface. Internal ladders, pipework, agitators, turbulence, heavy foam, and narrow stilling tubes can interfere with the signal. The sensor also needs to be mounted far enough above the highest liquid level to maintain its required blanking distance.

Key installation checks include:

• Mount the sensor perpendicular to the liquid surface.

• Avoid obstructions inside the beam angle.

• Keep the sensor away from inlet flows where possible.

• Allow for vapour, condensation, and temperature changes.

• Confirm the tank height and usable measurement range.

  
  

When installed correctly, ultrasonic sensors provide a clean and reliable source of continuous level data for ProSight.

Ultrasonic sensors measure level from above the liquid without contact.

Submersible level sensors handle deeper and difficult tanks

Submersible level sensors work differently. Instead of measuring distance from above, they sit in the liquid and measure hydrostatic pressure. The pressure at the sensor increases as the liquid depth increases. The system converts that pressure into a level reading.

This approach is well suited to:

• Deep tanks

• Underground tanks

• Wastewater pits

• Bores and wells

• Stormwater assets

• Tanks with heavy condensation

• Tanks where top-mounted sensing is not practical

  
  

Submersible sensors are often used where ultrasonic measurement can be difficult. Wastewater tanks, pump wells, and below-ground storage may have vapour, foam, turbulence, or restricted access. A pressure-based sensor can keep measuring even when the surface condition is less predictable.

The sensor must be selected for the liquid and the site. Cable material, diaphragm material, venting, range, and chemical compatibility all matter. For diesel, chemicals, and wastewater, compatibility should be checked before installation. Hazardous areas also need special attention, including suitable equipment selection and site-specific electrical requirements.

Submersible level sensors usually connect to the 4G telemetry unit with a cable. The telemetry unit remains above the tank or pit in a suitable enclosure, while the sensor sits at the required measurement point. ProSight then receives the readings in the same way as it would from an ultrasonic sensor.

For high-quality data, the installer should confirm:

• The sensor range matches the tank depth.

• The sensor is suspended clear of sludge where needed.

• The cable is protected from abrasion and strain.

• The vent tube, if present, remains dry and functional.

• The liquid density is considered where accuracy matters.

  
  

Because submersible sensors measure pressure, changes in liquid density can affect level conversion. This is usually manageable for water and many steady liquids. For chemical or process liquids with varying density, the configuration should account for the operating conditions.

ProSight turns level data into operational information

A level sensor on its own only solves part of the problem. The real value comes when readings become easy to access, interpret, and act on. ProSight provides the cloud layer that connects tank data to day-to-day decisions.

The platform can show current level, percentage full, volume, and historical trends, depending on how the tank has been configured. For non-linear tanks, such as horizontal cylinders, the system can use tank geometry or calibration data to present usable volume rather than raw depth alone.

Core ProSight functions for tank monitoring include:

• Live or recent tank level display

• Low-level and high-level alert thresholds

• Consumption history tracking

• Refill and drawdown trend visibility

• Multi-site asset views

• Data records for reporting and review

  
  

Low-level alerts are one of the most practical features. Instead of waiting for a tank to run dry, ProSight can notify the right person when the level drops below a set point. That set point can reflect delivery lead times, usage rate, and the risk profile of the asset.

For a diesel tank, the alert may give operations enough time to schedule a fuel delivery before generators, pumps, or mobile equipment are affected. For a chemical dosing tank, the alert can help prevent an under-dosing event. For a water tank, it can trigger inspection, refill, or demand management before supply becomes critical.

Consumption history tracking adds another layer of value. The trend data can reveal whether a tank is being used as expected. A gradual seasonal increase may be normal. A sudden drawdown outside operating hours may suggest a leak, theft, or a process fault. A site that refills more often than expected may need a larger tank or a revised delivery schedule.

Historical tank data helps identify usage patterns and abnormal drawdown.

Applications across water, diesel, chemicals, wastewater, and liquid storage

Tank level monitoring is valuable wherever liquid availability, storage capacity, or overflow risk needs active management. The same ProSight architecture can support many applications, while sensor selection and configuration change to suit the liquid.

Application	Common measurement choice	Typical monitoring goal
Water storage	Ultrasonic or submersible	Maintain supply, track usage, plan refills
Diesel tanks	Ultrasonic or compatible pressure sensor	Prevent run-outs, monitor fuel movement, support delivery planning
Chemical tanks	Compatible ultrasonic or submersible sensor	Track dosing supply, prevent low-level events, support safe storage
Wastewater pits	Submersible sensor	Monitor rising levels, identify pump issues, reduce overflow risk
General liquid storage	Sensor matched to tank and liquid	Improve inventory control and site visibility

Water tanks

Water storage is one of the most common uses for remote monitoring. Farms, remote facilities, councils, industrial sites, and commercial properties often manage multiple tanks over wide areas.

A connected water tank system can show which tanks are full, which are falling, and which need attention. It also makes water carting and pump control decisions easier because operators can base action on recent data rather than visual checks.

Diesel tanks

Diesel storage supports generators, pumps, vehicles, and mobile plant. A dry tank can stop production or affect backup power readiness. Remote level monitoring helps with refill planning and can also flag unusual drawdown.

For diesel applications, the sensor and installation must suit the fuel, the tank design, and any site safety requirements. Venting, hazardous area classification, and bunding should be reviewed as part of the design.

Chemical tanks

Chemical storage needs careful sensor selection. The liquid may be corrosive, viscous, reactive, or sensitive to contamination. Non-contact ultrasonic sensing can be useful where the vapour space and surface conditions allow it. Submersible sensing may suit other tanks, provided all wetted parts are compatible.

ProSight alerts can support chemical dosing operations by warning when supply is low. Historical data can also help confirm whether dosing demand matches the expected process load.

Wastewater and trade waste

Wastewater tanks, pump stations, and sumps can be difficult environments. Foam, ragging, sludge, and turbulence may all affect measurement. Submersible level sensors are often preferred because they can operate below the surface and provide a pressure-based reading.

Remote alerts are especially useful for high-level conditions. If a pump fails or inflow rises, ProSight can notify operators before the site reaches a critical level.

Bulk liquid storage

For liquid storage sites with several tanks, cloud monitoring gives a broader view of stock levels across the whole operation. This helps with dispatch, delivery scheduling, and production planning. Instead of checking each tank in isolation, operators can review all assets in one place.

What to look for in a reliable installation

Good performance depends on more than buying the right sensor. Tank shape, access, liquid properties, mobile coverage, power, and alert settings all affect the result.

Before installing a 4G monitoring system, confirm the following.

Tank geometry

The system needs accurate tank dimensions to calculate volume. Vertical cylinders, rectangular tanks, and horizontal cylinders all require different conversions from level to volume.

Measurement range

The sensor range should cover the full working level of the tank without operating at the edge of its capability. Allow for dead zones, sludge level, and safe fill height.

Liquid compatibility

Wetted materials must suit the liquid. This is critical for chemicals, wastewater, diesel, and process liquids.

Power availability

Some sites can use mains power. Others need battery or solar options. The reporting interval has a direct effect on power demand.

4G coverage

A site survey or signal check helps confirm that the telemetry unit can maintain a stable connection. Antenna placement can make a large difference at remote sites.

Alert logic

Alert thresholds should match operational response times. A low-level alarm is only useful if it gives enough time to act before the tank reaches a critical level.

Maintenance access

Sensors, enclosures, antennas, and cables should be installed where they can be inspected safely. Good cable protection and weatherproofing reduce avoidable faults.

Submersible sensors are commonly used where foam, vapour, or underground access make top-mounted sensing difficult.

Continuous visibility reduces risk and manual effort

Manual tank checks still have a place, especially for inspection and maintenance. They are less effective as the main source of level information. A manual reading is only true at the time it is taken. Between visits, levels can change quickly.

ProSight gives operators a continuous view of tank behaviour. That supports faster decisions and better planning across remote and distributed assets. The benefits are practical:

• Fewer unnecessary site visits

• Earlier warning before low-level or high-level events

• Better delivery and refill planning

• Clearer evidence of usage patterns

• Faster detection of abnormal consumption

• Central visibility across multiple tanks and sites

  
  

The technical foundation is also flexible. Ultrasonic sensors suit many top-mounted, non-contact applications. Submersible sensors suit deep, underground, turbulent, or difficult tanks. 4G telemetry carries data from remote locations without relying on local network infrastructure. ProSight turns those readings into alerts, records, and trends that people can use.

For operations managing water, diesel, chemicals, wastewater, or bulk liquid storage, the result is a more controlled way to run tank assets. The tank no longer needs to be treated as a hidden variable. Its level, history, and status can become part of normal operational decision-making.