Fuel Monitoring System in Gir Somnath: Diesel Tracking for Fish, Mango and Cement Trucks

Before dawn, a pickup loads iced fish at Veraval harbour and heads for a cold store. Under its body sits a steel diesel tank. On fitting day, an opening was cut in the top of that tank and a capacitive probe, trimmed to its depth, was lowered in and sealed. The probe's electrical value rises and falls with the diesel around it, so it reports the level continuously, with nothing floating or moving inside.

Its value is passed to the Teltonika FMB920 behind the dashboard, by cable for Omnicomm or Bluetooth for Mercetech and Mielta Fantom. The tracker is already noting where the pickup is, how fast it moves and whether the engine is on. It joins the fuel value to that and sends the package over the Airtel SIM to Trakzee Premium. Each fuel figure therefore has a time and a place: at the harbour gate, on the road to the cold store, or at a pump in Veraval.

The owner sees a litre figure and a graph. A drive shows as a gentle slope, a refill as a sharp step up stamped with date and location, a halt with the engine off as a flat stretch, and a sudden fall while parked as a step down, which also triggers an alert. Reports turn the same line into litres per trip, per day or per hundred kilometres.

Calibration is the foundation. During fitting the probe's raw readings are matched with known quantities in that exact tank, which is why the screen talks in litres. A replaced or welded tank, or a probe taken out for repair, means calibrating again.

The mango truck. In the Kesar season a trader's truck runs from Talala orchards to a packing shed and on to a market. Loads cannot wait. The graph shows a refill near Talala that matches the slip and a long wait at the shed with the engine idling. The trader sees what each shed wait costs in diesel and asks drivers to switch off during long waits.

The cement truck. A transporter's truck waits at a plant gate near Kodinar for a slot at the weighbridge. Over a month, its litres per trip sit well above its twin on the same run, and the idle record shows the engine running through most queues. Over a season, the difference adds up to a noticeable sum. The record points to a habit, not a loss, and a word with the driver changes it.

The pilgrim taxi. A tempo traveller owner in Veraval takes families from Somnath to Sasan and on to Diu. He compares diesel with kilometres for each hire. One hire shows a refill slip claiming more litres than the tank rose. The owner raises that single dated entry with the driver, and the rest of the month checks out. Next season he prices the three-stop circuit with real diesel figures.

The Una school bus. A school runs a bus through villages near Una and Gir Gadhada. Weekly diesel holds steady until a monsoon week brings a rise; route playback shows a long detour around a flooded low crossing. The record explains the extra litres to the management, and the figure returns to normal once the road clears. The office keeps the per-route numbers for next year's fee discussion.

A fuel monitoring system begins with knowing how the district's vehicles spend diesel, and Gir Somnath's pattern is long, coastal and seasonal. Veraval is the headquarters, and the talukas include Veraval, Sutrapada, Kodinar, Una, Talala and Gir Gadhada. Junagadh and Amreli are its neighbours, and the Union Territory of Diu sits beside Una. Because the district stretches along the coast, vehicles often run one or two main roads for hours, and a rail line connects Veraval with Junagadh and Rajkot.

Industry and fishing set the steady load. Veraval's fishing harbour sends catch to cold stores and processors at odd hours, and Kodinar's cement works keep heavy trucks queuing at gates and weighbridges. Waiting is a large part of the diesel story for both: an idling engine burns fuel without covering any distance.

Seasons and pilgrims add peaks. Talala's orchards send Kesar mangoes to packing sheds and markets, usually from about April into June, with trucks moving at all hours. The Somnath temple at Prabhas Patan draws pilgrims all year, with crowds around Mahashivratri and the month of Shravan, and the Gir forest around Sasan brings wildlife visitors, mostly in winter. Taxis and tempo travellers often combine Somnath, Sasan and Diu in one trip.

The monsoon reshapes the rest. Heavy rain arrives roughly from June to September, fishing at sea is restricted in those months as a general pattern, and low roads near rivers slow traffic. School buses and vans serve villages in Una, Sutrapada and Gir Gadhada through the year. Each vehicle empties its tank on its own schedule, and a per-vehicle record with dates and places is what keeps them apart.

A Gir Somnath business that runs vehicles usually has three people reading fuel. The owner, perhaps in Veraval, wants to know whether diesel spending matches the work. A shed or yard manager in Talala or near the harbour wants to know which vehicle is fuelled for the next run. The accountant wants refill dates and litres that agree with pump bills. Trakzee Premium lets the owner create separate logins for them, so all read one record and the main password stays private.

The owner looks only at what stands out. A quick evening check of sudden drops, refills and consumption per vehicle shows a mango truck thirstier than its partner, a refill larger than the tank, or a dip while a pickup was parked overnight. Those go on a short list; ordinary days are left alone.

The shed manager uses live litres and halt lists. Before a truck leaves Talala for a market at the peak of the mango season, he checks diesel on board. If a run is late, the stoppage list beside the fuel line shows whether the truck waited at a shed with the engine running or was parked. That keeps conversations with traders and drivers factual.

The accountant works each week with dates. Every refill entry has a time and a rise in litres, so pump slips are ticked off quickly and any slip without a matching rise becomes a question for the owner. Monthly mileage per vehicle sits in the same file as the diesel bills. Taxi operators can use the same split with a booking clerk. Tell BearTech who needs access when you order.

Omnicomm LLS-AF 4, Mercetech and Mielta Fantom share the same ₹19,999 package price, so let the vehicle choose. How far is the tank from the tracker? Is the tank steel or plastic? Would you rather avoid a sensor battery that will need replacing one day? A Gir Somnath fleet mixing fish pickups, cement trucks and taxis will answer differently for each, and all can sit in one Trakzee Premium account.

The wired Omnicomm draws its power from the vehicle and feeds the tracker's analog input over a cable, with no internal cell. Its IP69K body copes with salt spray, cement dust and pressure washing, it is rated from −40 to +80 °C, and its probe can be cut for tanks up to roughly 3 m. Heavy trucks that will stay on cement or harbour work for years usually start here.

Mercetech and Mielta Fantom connect by Bluetooth, so no signal cable runs along the chassis. Mercetech, a capacitive probe, suits a tempo traveller or bus where cable routing is awkward. Mielta Fantom offers Bluetooth 5.0, a long-life internal battery, tilt and temperature sensing, an IP67 body and a four-bolt steel flange for steel or plastic tanks, configured through Mielta's phone app; pickups with plastic tanks often suit it.

Wireless batteries wear with use and are consumables outside warranty. BearTech confirms the model and probe length after seeing your tank, and a comparable sensor may be supplied if a listed one is unavailable. A wired probe on the trucks and a wireless one on the taxis is a perfectly normal mix. Send a tank photo and the vehicle type on WhatsApp for a suggestion.