Q: How does monitoring meet HACCP requirements?

HACCP (Hazard Analysis and Critical Control Points) requires the identification of critical control points (CCPs) and continuous monitoring with data logging. Automated monitoring replaces tedious and error-prone manual record-keeping. Records are time-stamped, tamper-proof, and archived for at least 5 years. If a limit is exceeded (Critical Control Point exceeded), an alert is sent immediately, and the corrective action (technician intervention) is documented in the system.

Q: What happens if the cold storage room breaks down overnight?

As soon as the temperature exceeds the alert threshold (e.g., +5 °C for a meat storage room), a text message is sent to the on-call staff within 2 to 5 minutes. If the critical threshold is reached (e.g., +8 °C), a second text message is sent, and the quality manager is also notified. The system records the temperature every minute during the incident to reconstruct the temperature rise curve and assess the health impact on the products.

Q: How many sensors should be installed in a cold room?

The NF EN 12830 standard (Temperature Loggers for the Transport, Storage, and Distribution of Food) recommends at least one sensor per homogeneous thermal zone. In a large room, hot spots are found near the door, high up under the evaporator, and in the far corners. A chamber smaller than 20 m² may require only a single central sensor, but a chamber of 200 m² requires 4 to 6 measurement points for reliable mapping.

Q: Does monitoring also work for blast-freezing tunnels?

Yes. Freezing tunnels reach temperatures of -35 to -40 °C and require PT100 probes specifically designed for these extreme temperatures. The gateway must be installed outside the tunnel in an area at room temperature, with the appropriate thermal cabling. The platform monitors the transit time, the temperature at the tunnel entrance and exit, and calculates the thermal load to detect any performance deviations in the refrigeration system.

Q: How does supervision help during a health audit or a DDPP inspection?

The DDPP (Departmental Directorate for Population Protection) and IFS/BRC auditors systematically request temperature logs for cold storage rooms covering the past 3 to 12 months. With just a few clicks, the platform generates a time-stamped PDF report containing all measurements, triggered alarms, and documented corrective actions. This report replaces dozens of paper logs and is indisputable because it is generated by an automated system.

Q: Can both positive and negative cold rooms be monitored on the same platform?

Yes. The platform simultaneously manages positive-temperature rooms (+2 to +4 °C), negative-temperature rooms (-18 to -22 °C), and warming areas (+65 °C for prepared meals). Each piece of equipment has its own thresholds, alerts, and recipients. A single dashboard displays the status of all chambers using color-coding, allowing the quality manager to see at a glance whether all facilities are in compliance.

Question 1

Which temperature sensors should you choose to monitor a cold room?

Accepted Answer

PT100 sensors (temperature-coefficient resistors) are the most accurate (Class B: ±0.3 °C at 0 °C) and the most widely used in the food industry for temperatures ranging from -40 °C to +100 °C. PT1000 probes offer the same performance with a reference resistance of 1000 Ω, making them easier to wire over long distances. For ultra-critical applications (pharmaceuticals, research), Class A (±0.15 °C) or Class AA (±0.1 °C) probes are available. The probes must be calibrated annually by a COFRAC-accredited laboratory.

Question 2

What temperature thresholds should be monitored depending on the type of cold storage room?

Accepted Answer

Regulations specify maximum temperatures that must not be exceeded: meat products in cold storage < +4 °C (decree of December 21, 2009), fresh fish < +2 °C, fruits and vegetables depending on the type (0 to +10 °C), frozen products < -18 °C (alert at -15 °C), ice cream and sorbet < -18 °C. For pharmaceutical storage rooms, heat-sensitive medications require temperatures of +2 to +8 °C (vaccine cold chain) with warning thresholds at 2 °C and 7 °C.

Question 3

How does monitoring meet HACCP requirements?

Accepted Answer

HACCP (Hazard Analysis and Critical Control Points) requires the identification of critical control points (CCPs) and continuous monitoring with data logging. Automated monitoring replaces tedious and error-prone manual record-keeping. Records are time-stamped, tamper-proof, and archived for at least 5 years. If a limit is exceeded (Critical Control Point exceeded), an alert is sent immediately, and the corrective action (technician intervention) is documented in the system.

Question 4

What happens if the cold storage room breaks down overnight?

Accepted Answer

As soon as the temperature exceeds the alert threshold (e.g., +5 °C for a meat storage room), a text message is sent to the on-call staff within 2 to 5 minutes. If the critical threshold is reached (e.g., +8 °C), a second text message is sent, and the quality manager is also notified. The system records the temperature every minute during the incident to reconstruct the temperature rise curve and assess the health impact on the products.

Question 5

How many sensors should be installed in a cold room?

Accepted Answer

The NF EN 12830 standard (Temperature Loggers for the Transport, Storage, and Distribution of Food) recommends at least one sensor per homogeneous thermal zone. In a large room, hot spots are found near the door, high up under the evaporator, and in the far corners. A chamber smaller than 20 m² may require only a single central sensor, but a chamber of 200 m² requires 4 to 6 measurement points for reliable mapping.

Question 6

Does monitoring also work for blast-freezing tunnels?

Accepted Answer

Yes. Freezing tunnels reach temperatures of -35 to -40 °C and require PT100 probes specifically designed for these extreme temperatures. The gateway must be installed outside the tunnel in an area at room temperature, with the appropriate thermal cabling. The platform monitors the transit time, the temperature at the tunnel entrance and exit, and calculates the thermal load to detect any performance deviations in the refrigeration system.

Question 7

How does supervision help during a health audit or a DDPP inspection?

Accepted Answer

The DDPP (Departmental Directorate for Population Protection) and IFS/BRC auditors systematically request temperature logs for cold storage rooms covering the past 3 to 12 months. With just a few clicks, the platform generates a time-stamped PDF report containing all measurements, triggered alarms, and documented corrective actions. This report replaces dozens of paper logs and is indisputable because it is generated by an automated system.

Question 8

Can both positive and negative cold rooms be monitored on the same platform?

Accepted Answer

Yes. The platform simultaneously manages positive-temperature rooms (+2 to +4 °C), negative-temperature rooms (-18 to -22 °C), and warming areas (+65 °C for prepared meals). Each piece of equipment has its own thresholds, alerts, and recipients. A single dashboard displays the status of all chambers using color-coding, allowing the quality manager to see at a glance whether all facilities are in compliance.

Cold Room Monitoring: PT100, HACCP, SMS Alerts, and Compliance with EC Regulation 853/2004

Why is cold room monitoring critical?

Applicable Standards and Regulations

Control Architecture for a Refrigeration System

Use Case: Multi-Warehouse Agri-Food Purchasing Cooperative

Frequently Asked Questions

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Why is cold room monitoring critical?​

Applicable Standards and Regulations​

Control Architecture for a Refrigeration System​

Use Case: Multi-Warehouse Agri-Food Purchasing Cooperative​