Aranet Case Study – Wireless temperature monitoring in Latvia’s largest supermarket chain, Rimi Baltic

Aranet - Wireless Monitoring Solutions

Aranet Case Study – Wireless temperature monitoring in Latvia’s largest supermarket chain, Rimi Baltic

If a refrigeration unit in your supermarket breaks down you don’t have to worry about spoiled products. Provided that you have the Aranet smart sensor system installed, as Rimi Baltic has… Rimi Baltic is a major retail operator in the Baltic states based in Riga, Latvia. It is a subsidiary of the Swedish group ICA. Rimi Baltic operates 83 retail stores in Estonia, 56 in Lithuania and 125 stores in Latvia. They also operate supply-chain distribution centers in each of these countries.

When Aranet representatives first started to investigate supermarkets, it was a surprise for us how often data collection still depended on manual pen and paper recording. Measurements such as freezer temperatures were susceptible to human error and problems could only be detected after the fact.

In the summer of 2018 Rimi Latvia gave Aranet a chance to prove the quality of our wireless sensors for refrigeration unit temperature monitoring.

The superior quality of the Aranet system became apparent – where our competitors needed 3 base stations to cover a large supermarket, Aranet did it with only one. Because of the advanced performance of our technologies Aranet proved itself to be the best solution for Rimi’s needs.

Today 7 000 Aranet wireless sensors are installed in all 125 Rimi supermarkets in Latvia.

If something goes wrong with a refrigeration unit the Aranet system immediately alerts the food safety manager that temperatures are experiencing a variance outside of optimal range so that corrective actions can be taken.

Currently all of the Rimi stores in Latvia access the Aranet Cloud for centralized monitoring and data analytics. No more manual temperature data logging means greatly reducing losses associated with non-saleable products. Automated temperature monitoring and minute-by-minute notifications of variances greatly simplify compliance with the HACCP process.

Even in the largest Rimi supermarket, 8 800 m2 – about the size of a city block, the wireless signal of a single Aranet base station can cover the whole store.

After implementing the Aranet sensor system additional benefits are becoming apparent. Rimi Baltic outsources the operation and maintenance of refrigeration units. With the data provided by Aranet, stores can save on the energy costs of operating the refrigeration equipment by keeping the units running at the optimal temperature range. In accordance with food safety guidelines Rimi must maintain their frozen food inventory at -20°C. By using the Aranet system Rimi learned that the outsourced maintenance company was keeping some of the freezers at temperatures as low as -30°C. The ambient temperature at Rimi supermarkets is usually kept around 20°C. This means that the temperature difference between the freezer and the store temperature was 32°C, when it should have been 22°C. Aranet data analytics identified substantial savings of 20% by reducing energy costs associated with operating these units.

The Aranet system is a plug-and-play solution that allows a supermarket to protect itself from unnecessary food spoilage and potential food safety violations. As an added benefit it allows for an easy record keeping for reporting and traceability.

You can only improve what you measure. Time to choose Aranet!

Complete monitoring and alarming system with Sigfox technology by COMET System

Sigfox IoT Sensors

Complete monitoring and alarming system with Sigfox technology by COMET System

Temperature, relative humidity, atmospheric pressure and two-state signals sensors for the Sigfox network.

COMET Sigfox IoT  sensor performs a measurement every 1 minute. The measured values are displayed locally on the LCD and are sent over an adjustable time interval (10 min to 24 hour) via radio transmission in the Sigfox network to the COMET Cloud data store.

For each measured variable, it is possible to set two alarm limits. The alarm is signalled by the symbols on the LCD display and sending an extraordinary radio message to the Sigfox network, where it is forwarded to the end user by e-mail or SMS message.

The device is powered by an internal Li-on battery whose lifetime is dependent on the transmission range and operating temperature and ranges from 4 months to 7 years.

  • Accurate measurement of
    • temperature
    • humidity
    • barometric pressure
    • events
  • Inexpensive wireless communication for long distances
  • Indication of alarm via e-mail or SMS
  • Data storage in the COMET Cloud
  • Rugged design
  • Long battery life up to 7 years (with standard AA batteries and with C batteries up to 10 years)
Complete monitoring and alarming system with Sigfox technology

Advantages of COMET Cloud

  • centralized monitoring, documentation and management of all measured points
  • securing the measured data against unauthorized access from a third party
  • dashboard – comparing of values ​​from up to 4 sensors
  • data presentation in graph and table
  • remote adjustment of sensors
  • signal quality and sensor battery indication
  • well-arranged presentation of larger number of devices, the possibility of grouping into sub-organizations
  • administration of access rights of individual cloud users
  • warning e-mails:
    • when alarm limits are exceeded
    • when the battery power is low
    • when the radio connection is lost
    • in case of measurement failure
    • when the fault condition ends
  • possibility to define recipients of e-mails according to the type of fault (sensor service, service of technology)
  • possibility to define recipients of e-mails according to the level of exceeding the monitored limit
  • user-defined texts for individual warning emails

Aranet PRO – Innovative Environmental Wireless Monitoring Sensors

Aranet - Wireless Monitoring Solutions

Aranet PRO – Innovative Environmental Wireless Monitoring Sensors

Aranet PRO is an industrial grade environmental wireless monitoring solution for a variety of businesses. Aranet PRO comes in three variations

  • Aranet PRO 12 Base Station supports up to 12 wireless sensors,
  • Aranet PRO 50 Base Station supports up to 50 wireless sensors, and
  • Aranet PRO 100 Base Station supports up to 100 wireless sensors.

The base station has exceptional sensitivity and allows placing the wireless sensors within line-of-sight range of at least 3km and inside buildings within range of several hundred meters. Aranet PRO systems come with a free, easy to use software program, Aranet SensorHUB, that helps view, analyse and compare data in real time, set thresholds for alarms, rename sensors, export data to help keep pulse on the ongoing and optimize processes when necessary. Base station is able to store data locally and/or on the Aranet Cloud (cloud service available 1Q/2019). Responsive design of the software adapts to smartphone, tablet or laptop.

The Aranet API software allows integrating the Aranet sensor measurement data into 3rd party applications. The application aranet-agent runs on Windows, Linux or macOS operating systems and acts as data provider between one or several Aranet PRO base stations (collection point of sensor measurements) and 3rd party application.

Aranet PRO Base Stations for Wireless Sensors

Depending on how many sensors are required, the user can choose between three Aranet PRO versions – Aranet PRO 12, Aranet PRO 50 and Aranet PRO 100:

  • Maximum sensor count: 100/50/12
  • Alarm type: Email, optional alarm SMS notification through USB modem
  • Memory: 10+ years with 100 sensors
  • Receiver sensitivity: Europe -127 dBm
  • Channels – Europe: Channel 1: 868.10 MHz, Channel 2: 868.30 MHz, Channel 3: 868.50 MHz
  • User interface: Aranet SensorHUB (Aranet Cloud available 1Q/2019)
  • Interface accessibility: PC, tablet or smart phone connected via Ethernet cable or local WiFi connection
  • Temperature scale: Celsius, Fahrenheit, Kelvin
  • Data resolution: Temperature 0.1°, Humidity 1%
  • Data protection: Password protected user accounts, encryption for data
  • Communication: Ethernet cable, local WiFi (2.4 GHz)
  • Power options: AC Power adapter. Optional power supply with PoE adapter. Built-in battery (backup power up to 30min)

Wireless Sensors with Long Range and Battery Life

Aranet wireless sensors for monitoring temperature, relative humidity, CO2 level, atmospheric pressure, illuminance and distance in different environments. Data transmission between sensors and Aranet PRO base station uses free of charge 868MHz frequency band and line-of-sight range can be up to 3km (inside buildings several hundred meters). Sensors come with Alkaline batteries with max. battery life of 7 years, and optionally available Lithium batteries with max. battery life of 10 years. Battery life depends on measurement interval (can be 1, 2, 5 or 10 minutes) and on monitoring device.

  • Measures: CO2-level 0-9999 ppm, temperature 0°C to +50°C, relative humidity 0% to 85% RH, atmospheric pressure 300-1100 hPa
  • Battery life: Up to 2 years
  • Protection class: IP20
  • Measures: temperature (-40°C to +60 °C)
  • Battery life: up to 7 years
  • Protection class: IP68
  • Measures: temperature (-40°C to +60°C) and relative humidity (0% to 100%)
  • Battery life: up to 10 years
  • Protection class: IP42
  • Measures: temperature (-40°C to +60°C) and relative humidity (0% to 100%)
  • Battery life: up to 10 years
  • Protection class: IP68
  • Measures: temperature (-55°C to +105°C)
  • Battery life: up to 10 years
  • Protection class: IP68
  • Probe length: 0.3m/1m/5m/10m
  • Measures: temperature (-200°C to +800°C)
  • Probe type: Any class PT100
  • Battery life: up to 10 years
  • Protection class: IP68
  • Measures: temperature (-190°C to +260°C)
  • Battery life: up to 10 years
  • Protection class: IP65
  • Measures: distance (0.3m to 5m or 0.5 to 10m)
  • Battery life: up to 7 years
  • Protection class: IP67
  • Measures: illuminance (0 – 200 000 lux)
  • Battery life: up to 7 years
  • Protection class: IP68
  • Measures: current (0-30mA)
  • Battery life: up to 7 years
  • Protection class: IP68
  • Measures: DC voltage (-32 to +32 VDC)
  • Battery life: up to 7 years
  • Protection class: IP68
  • Measures: temperature (-200°C to +800°C)
  • Probe type: Any class PT1000
  • Battery life: up to 10 years
  • Protection class: IP68
  • Measures: carbon dioxide (CO2) (0 ppm – 9999 ppm)
  • Battery life: up to 7 years
  • Protection class: IP40

Aranet Signal Test sensor designed to analyze the signal strength and help IoT system deployers install and plan sensor placements in desired locations.