Fuel Monitoring System in Sabarkantha: Diesel Counts for Milk Vans and Potato Trucks

The milk van at dawn. It leaves Himmatnagar before light, stops at a string of village dairy societies, and returns to the plant within a tight window. Its fuel line falls in small steps between stops, with short flat patches while cans are loaded. Because the route repeats every day, the van's diesel per round should hardly change. The record gives litres per round and shows at once when one van starts burning more than its sister on a similar route.

The potato truck in spring. After the rabi harvest it carries sacks from fields near Prantij and Talod to a cold store, waits at the gate, then later takes stock to markets towards Ahmedabad. Queue time shows as a gentle slide with the engine idling or a flat line with it off. Over a season the owner sees what waiting costs in diesel. The record gives litres per load and per hour at the cold store.

The quarry tipper near Idar. It loops between a quarry face among the rocky hills and a cutting yard, many times a day. The graph looks like a staircase going down, with a tall step up at each refill. When one tipper's steps grow deeper than another's on the same loop, the workshop checks it first. The record gives diesel per loop and loops per day.

The tempo traveller to Ambaji. A group hires it from Himmatnagar through Khedbrahma, and it waits while they visit the temple. Around the Bhadarvi full-moon fair, roads are crowded and slow, and the trip takes longer. The line should stay flat during the wait. The record gives fuel per hire, which helps the owner price trips in the busy weeks.

Sabarkantha is a district of plains and rocky hills in north Gujarat, named after the Sabarmati. Himmatnagar, the headquarters, stands on the Hathmati river with its reservoir close to town. Aravalli, Gandhinagar, Mehsana and Banaskantha are neighbours, and Rajasthan lies beyond the hills. NH 48 carries Ahmedabad to Udaipur traffic through Himmatnagar, and the rail line on the same axis serves the town too.

Farm and dairy freight set the daily rhythm. Village dairy societies send milk to the plant at Himmatnagar each morning and evening, so vans and tankers run tight rounds. Potato, wheat, mustard and cumin are harvested in the cooler months, and from about February into spring trucks queue at cold stores and markets. Cotton, maize and castor follow the monsoon. Talukas such as Prantij, Talod and Vadali feed much of this traffic.

The hills bring other work. Around Idar, quarrying and stone cutting keep tippers busy on short repeated loops. Khedbrahma is a temple town on a road many devotees take to Ambaji, and the Bhadarvi full-moon fair fills those roads with walkers and vehicles. Poshina and Vijaynagar are forested talukas, with the Polo forest drawing visitors, and roadside help there is thin.

School buses run village routes from Himmatnagar and Idar, and tractors and pickups fill the farm belt. So diesel is spent on tight dairy schedules, in cold-store queues, on quarry loops and on long highway runs. A tank record per vehicle separates these, letting an owner see which kind of work actually drives the fuel bill. In the monsoon, cotton and maize loads add another wave of trucks after the rains.

Each of the three sensors costs ₹19,999 within the package, so the decision rests on the vehicle. Three points guide it: the distance between tank and tracker, the material of the tank, and whether anyone will look after a sensor battery in years to come. A quarry tipper and a milk tanker can arrive at different answers even in the same yard. Ask also whether the vehicle works mostly on smooth highway or on rough quarry ground.

Omnicomm LLS-AF 4 connects by cable, runs on the vehicle's power through the tracker's analog input and carries no battery. Potato trucks and quarry tippers, with tanks near the cabin and a working life of many years under one owner, are its usual home. Wiring a heavy vehicle is ordinary work for the executive.

Mercetech and Mielta Fantom are wireless, linking to the tracker by Bluetooth so that no signal cable is needed. Mercetech has a battery inside and suits buses and tankers whose tanks sit far back. Mielta Fantom uses Bluetooth 5.0, keeps its own battery, senses tilt and temperature, and mounts with a bolted steel flange on steel or plastic tanks; it is set up through Mielta's phone app. Small milk vans and farm pickups with plastic tanks are often fitted with it.

Remember that wireless batteries are consumables outside the warranty. BearTech settles the model and probe length after seeing the tank, and an equivalent sensor may be supplied if the listed one is out of stock. Vehicles on different sensors can share one Trakzee Premium account. Send a photo of each tank on WhatsApp for a recommendation.

Say a sudden-drop alert arrives one evening from a tipper parked near a quarry outside Idar. It means only that the level fell faster than normal running explains. Quarry sites are uneven and rough, so innocent causes are common. Treat the alert as a question to be answered calmly rather than as a finding against the driver.

Open the map first. Where was the tipper, and was it moving or parked? A vehicle left on a sloping quarry floor tilts its tank, and the reading may climb back once it stands level. Then look at the whole day's graph. A dip that recovers is tilt or slosh. A step down that holds while the tipper is parked on level ground is the case to follow up.

Check whether coverage dropped around the alert; the hills can thin the signal, and late data can make a gradual change look sudden. Then call the driver politely while the evening is fresh. Compare his account with the pump slip and with the place and time of the last refill on the record. Note the exact minute the alert arrived.

Finally, write it all down: date, vehicle, place, explanation and decision. After a season, the notes show whether alerts cluster at one site, around one tipper or on one road, which is far more useful than any single evening. Keep the system's role in mind throughout. It records and warns; it cannot lock a tank or stop anyone. Lockable caps and rules for vehicles left at sites remain your own measures.

BearTech quotes about 95% accuracy on a sound tank once fitting and calibration are done properly. That is a practical figure for running vehicles, not a laboratory one. The tank's shape and condition, the diesel's quality, the slope under the vehicle and the motion of fuel inside the tank all move the reading slightly. Diesel also expands slightly in summer heat, so dawn and afternoon readings may differ a little.

Sabarkantha's terrain brings those factors into play. Roads into the Idar hills and towards Poshina and Vijaynagar climb and twist, tilting tanks and sloshing diesel. Quarry tracks rock a loaded tipper. In the monsoon, causeways and dirt tracks in the hills can be slow or closed for a spell, and detours add rough kilometres. Judge any refill or loss from readings taken with the vehicle parked on level ground, before and after.

Coverage is another limit. Data travels on an Airtel SIM, and parts of the hill talukas have thinner signal. There the live view pauses and resumes once the vehicle reconnects. A gap describes the network, not the driver. If you know such stretches on your routes, tell us when ordering so they are expected rather than worried over.

One more set of limits is commercial. Wireless sensor batteries wear out and the warranty treats them as consumables. Once fitted, nothing can be returned, refunded or swapped, which is why every tank question gets answered beforehand. And there is no locking function at all: the equipment notices and reports a change in level, but it cannot hold anyone back from the tank. Physical controls stay with you; the record simply points to when they are needed.