Cold room and cold storage temperature monitoring

Agrinovo installs temperature and humidity sensors at several points in each cold room, connects them to a controller mounted outside the room, and sends an alert when any point stays out of its range longer than you allow.

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A cold room needs more than one measuring point

The air near the door warms every time it opens, the air at the evaporator is the coldest in the room, and warm spots form in the far corner behind stacked pallets. A reading from one point describes that point only, while an inspector or a customer asks about the whole room.

An open door shows up first on the sensor beside it

Unloading a truck takes a few minutes, a door left open takes an hour. You set how long each point may stay out of range, so routine unloading raises no alert and a door left open does.

An icing evaporator shows as a slow rise over several days

The room history shows the trend before the first alert fires. That is the time to schedule a defrost or call a technician.

One controller reads several points in several rooms

Temperature and humidity sensors share one RS-485 cable, each with its own address, so a controller outside the rooms reads several points in several rooms. Each point has its own name, range and history.

Complete systems for this application

We connect the sensors to the controller and configure the dashboard and alerts before the system ships.

Cold room and refrigerator monitoring

Temperature readings from each fridge, freezer or cold room, an alert when one leaves its range, and a stored record for inspections.

What you get

  • Sensors: Temperature, and humidity where it matters, with the probe chosen for your range, from display fridge to freezer.
Controller:
Omni Genesis Lite for one fridge, Omni Genesis for up to four points, Omni Exodus or expansion for more.
Alerts:
A reading out of range for longer than the time you allow (a normal defrost cycle does not trigger one), and a disconnected probe.
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What we do before and after delivery

  • We connect the sensors to the controller and register them before shipping.
  • We set up the dashboard and configure the alerts with you in the cloud. You can change them at any time.
  • The cloud subscription is included, with a cellular SIM on 4G controllers.
  • After delivery we hold a remote onboarding call. In Israel we also install on site.

Omni Genesis Lite takes one sensor, Omni Genesis four and Omni Exodus six. Expansion adds more. For anything not listed here, tell us what you need to measure and we will put the system together.

How it is installed

  1. Sensors inside the room

    A temperature and humidity sensor near the door and another in the far corner, on one RS-485 cable. For a freezer room, or to measure inside the product, a stainless temperature probe rated down to -55°C.

  2. The controller on the outside wall

    The Omni Genesis is mounted outside the room, at normal temperature. The sensor cable enters through an existing pass-through or a small sealed hole. The controller reports over cellular or Wi-Fi and keeps measuring on its battery during a power cut.

  3. A range for each point

    Each point gets a name, a minimum, a maximum and an allowed time out of range: 0 to 2°C for a meat room, 4 to 8°C for vegetables, below -18°C for frozen goods. The controller reports as often as you choose, down to once a minute.

For individual refrigerators and freezers in a kitchen or shop, see refrigerator and freezer temperature monitoring.

What you see and when you are alerted

Live readings

The current temperature, and humidity where it is measured, at every point, grouped by room.

Alarms

When a point stays out of range longer than allowed, a temperature alarm goes to every user on the account by SMS, email, phone call or app notification.

Records for inspections

Every reading is stored with its time. You export any room and period to Excel for an inspection or a dispute over a warm delivery.

Where it is installed

Cold storage and distribution

Several rooms at different temperatures on one controller, with a history per room.

Freezer rooms

A stainless probe rated down to -55°C, and an allowed time out of range that covers a scheduled defrost.

Packing houses and pre-cooling

Produce is cooled after harvest, and the time it takes to reach the target temperature decides its shelf life. Temperature and humidity are measured together.

Ripening rooms

Bananas, avocados and mangoes, where relative humidity matters as much as temperature. One sensor measures both.

Specifications

Temperature and humidity sensor -40 to +80°C, ±0.3°C at 25°C; 0-100% RH, ±3% RH
Sensor housings Vented, sealed, brass, stainless or sintered, up to IP67
Sensor cable RS-485 Modbus RTU, several addressed sensors on one cable
Temperature probe -55 to +125°C, ±0.5°C (-10 to +85°C), IP68
Controller Omni Genesis: 4 ports, rechargeable battery, 6-32 V DC input, IP65 enclosure
Connectivity 4G-LTE with SIM included, Wi-Fi, Bluetooth
Reporting interval Your choice, from once a minute
Export Excel, per sensor and per period
Warranty 24 months on the controller

Questions about cold room temperature monitoring

How many measuring points does one cold room need?
A small room needs one point, away from the door and the evaporator. A room of several tens of square metres needs at least two, one near the door and one in the far corner, because the difference between them is what an inspector asks about. The temperature and humidity sensors are addressed on an RS-485 cable, so several sensors in one room use a single controller port.

How does the cable get into the room?
Through an existing pipe pass-through in the panel, or a small hole drilled and sealed after the cable is pulled. The controller stays outside at normal temperature and only the sensors are inside.

Does the warehouse need Wi-Fi?
No. The system is wired inside the room and wireless outside it: the controller reports over the cellular network with a SIM included in the cloud subscription, which also works where metal-faced panels block wireless signals. Wi-Fi can be used where a stable network reaches the controller.

What happens in a power outage?
The controller runs on a rechargeable battery, so it keeps measuring, storing readings and sending alerts. Afterwards the history shows when the room started to warm and how fast.

Can humidity be monitored as well?
Yes. The temperature and humidity sensor measures both at the same point, from -40 to +80°C and 0 to 100% RH. In ripening rooms, pre-cooling rooms and vegetable cold stores, humidity affects shelf life as much as temperature.

Tell us about your cold store

How many rooms, at which temperatures, and where the controller can be mounted. We will plan the measuring points with you.

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