Cold chain monitoring for a Malta delivery round
Where a chilled round comes apart
Multi-drop food distribution is harder than long-haul freight for one reason: the load gets opened again and again. Four things follow from that, and they come up in every conversation we have with a caterer, a butcher or a fishmonger in Malta.
The door lets the heat in
Twelve drops means twelve door openings on a July morning. The box recovers slowly and nobody is watching the curve in between. Whether it was the unit, a worn door seal or a stacking habit blocking the airflow, you cannot tell afterwards.
A rejection you cannot contest
The customer says the load came in warm. Without a temperature record tied to a time and a place, their word wins, and the credit note comes out of your margin.
HACCP paperwork written from memory
The driver fills in the temperature sheet at the end of the shift, from what he remembers of a run that started at half four. That is a recollection, not a record, and an inspector can tell the difference.
The unit that quit at 03:00
A fridge fails in the yard overnight and you find out at 07:00, when the van is being loaded. By then the stock is gone and the day is already behind.
From the 04:30 load-out to Friday's report
One van, one round, from the yard to the file the report goes into. The clock times are ours. Move them to your own and the order underneath does not change.
- 104:30
Loading the van
The box is down to -18 °C and the frozen stock goes in. The overnight trace is already on screen, so you can see the unit held through the night and nothing gets loaded into a box that failed quietly at three in the morning.
- 206:15
First drop, Birkirkara
The door opens, the reading climbs 3 °C, the door closes and recovery begins. Nothing on the van senses the door. What you are reading is the shape of the curve, and that shape is what a drop looks like. It stays inside the tolerance you set, so no alert fires, and the record keeps all of it anyway.
- 309:40
The fourth drop runs long
The box stays above threshold past the sustained-duration window, and the alert goes to the transport manager and the driver at the same time, in time to close the door and move on. You choose the recipients per alert. There is no acknowledge step and no ladder behind it, so everyone on the list gets the same message.
- 413:00
A customer disputes the morning
The office pulls the Temperature report for that vehicle and that window. Time-stamped readings, min, max and average, any excursion with how long it lasted, and the GPS position against each reading. The PDF goes back by email and the conversation ends.
- 5Friday
Into the HACCP file
A scheduled weekly temperature report per vehicle lands by email. Reports run to 31 days at a time, so a quarterly file is three of them, and the readings behind it stay available for two years and more.
What you pay depends on how many vehicles you run and what you fit to them. Tell our Malta team both and we will quote it.
Ask for a quoteWhat cold chain monitoring in Malta runs on
All of it sits on the same account and the same map as the rest of your fleet, so the chilled vans are not a second system to log into.
- GeofencingA zone around each customer, so the reading at 09:40 lines up with whose door it was.Yipii IoT
- BeaconsOne Bluetooth sensor per compartment, for a van running chilled and frozen at the same time.Yipii IoT
- Live Share TrackingA link that carries the live position and nothing else, so the temperature stays inside your account.Yipii IoT add-on
- MaintenanceService schedules for the vans and for the fridge units on them, by distance or by date.Yipii Mobility
Environmental monitoring, reporting, alerts, geofencing and beacons are part of Yipii IoT, the core tracking account, with the sensors themselves quoted as hardware alongside it. Every account gets three active sharing links, and an operation that wants more than three has the sharing add-on quoted in with the rest.
Included with Yipii Mobility, the add-on that extends your IoT account. One subscription covers everything in the app, so no feature here is sold on its own. What Yipii Mobility includes
One sensor per compartment, and a tracker that can read it
A sensor reports the temperature at one place in the box, so a van running chilled at the front and frozen at the back needs one in each. Wired probes read to ±0.5 °C and take a tamper-resistant mounting: main cargo area, near the doors, and on the return air if you want to see how the unit itself is coping. Bluetooth sensors are quicker to fit and to move between vehicles, and accuracy varies by model. Either way the tracker has to support sensors, so check the model before ordering.
- One sensor per compartment, wired probe or Bluetooth
- ±0.5 °C on a wired probe, calibrated against a reference thermometer
- Teltonika trackers with a wired probe input or BLE, checked before ordering
- Thresholds tuned in the first fortnight against your real rounds
The numbers, and what each one assumes
Every assumption below sits next to the figure it produces, and two of these rows are single incidents rather than annual savings, which changes how the table should be read.
What the three recurring rows come to in a year: contested rejections, logging by hand, and the calls.
The thresholds are wrong in week one. We tune them on your rounds.
| Lever | Assumption | What it comes to |
|---|---|---|
| One load loss prevented | A van of chilled and frozen stock written off after a unit failure nobody caught in time | €4,000 or more, once |
| An overnight failure caught early | One unit failure a year, found while half the load can still be moved into another box | €2,000, in a year it happens |
| Rejections contested on evidence | 2 a month at €140 of stock or credit, over 12 months | €3,360 a year |
| Temperature logging by hand removed | 20 minutes a day of driver and office time at €14 an hour, over 250 working days | €1,167 a year |
| The "where is my delivery" calls | 8 calls a day at 3 minutes each, answered by a tracking link, at €14 an hour, over 250 working days | €1,400 a year |
The two incident rows sit outside that total and do not repeat, which is the bit worth holding on to: a single prevented incident can cover the year. Yipii produces the temperature evidence your HACCP or GDP plan calls for. The plan, and responsibility for it, remain yours. Illustrative arithmetic, not a measured customer outcome.
Frequently asked
For the temperature part of the file, yes. Yipii produces the temperature evidence your HACCP or GDP plan calls for: time-stamped readings with min, max and average, every excursion with how long it lasted, and the GPS position against each reading, exported to PDF or Excel. Reports run to 31 days at a time, so a quarterly file is three of them, and the readings stay available for two years and more. Yipii is not a food-safety certification. The plan, the control points and responsibility for them remain yours, and the record is what we hand you to defend them with.
In the temperature curve. There is no door input on the tracker and no door sensor in our range, so a door opening is something you read rather than something the van reports. You get a reading every 30 seconds while the van is moving, and a drop looks like a sharp climb followed by a slower recovery. Read against a geofence entry at the customer, the two together tell you which door was open and roughly how long for. If you need the door itself logged as an event, we are not the ones to claim it.
You pull the Temperature report for that vehicle and that time window, which takes a minute or two, and send the PDF. It shows every reading between load-out and the drop, the minimum and the maximum, and any point where the box went out of range along with how long it stayed there, each one against a GPS position. Most disputes stop there, in either direction. Sometimes the report shows the load did go warm, and then you have found a real problem in your own operation instead of arguing about somebody else's.
Yes, with one sensor per compartment. A sensor reports the temperature where it sits, so a single probe in a partitioned body tells you about half the van. Each compartment then gets its own threshold: 8 °C at the top end for fresh produce, -15 °C for frozen, 2 °C at the bottom end for beverages, and 0 °C where you are protecting produce from freezing. Bluetooth sensors are the usual choice for this, because they are quick to fit and to move, and the tracker in the vehicle reads them at roughly ten metres.
No. A tracking link carries the live position of the vehicle and nothing else, so a customer watching one sees the van approach and learns nothing about the load, the driver or the rest of your round. When a customer wants the temperature, you send them the report for their delivery, which is the better document to be holding anyway because it has a time and a position against every reading.
A refrigerated trailer with no power of its own, and the arrival times behind a delivery record, are both covered under Trailer, container & skip tracking and Proof of service & site hours.
The whole setup, from fitting the sensors to tuning thresholds against your real rounds, is written out in the refrigerated food delivery guide in the Yipii IoT docs.