ColdWatch: guides, playbooks and tools.

By the Autowhat AI logistics team · Updated 7 Oct 2026

• Guides

• GxP Temperature Monitoring System: What It NeedsA GxP temperature monitoring system continuously records freezer and cold-room temperatures, alarms on high, low, rate-of-change, communication and sensor faults, escalates until someone acknowledges with a reason, tracks calibration, and keeps an unalterable audit trail with IQ/OQ/PQ validation for inspectors.
• Investigating a Cold Room Temperature ExcursionTo investigate a cold room or freezer excursion, quarantine the product, collect start and end time, peak, affected units, shift, alarm, acknowledgement and door history, check common causes such as compressor, door, loading and sensor faults, then record the QA disposition and corrective action.
• Temperature Sensor Calibration Tracking GuideTrack temperature sensor calibration with one register of every sensor in use, its last and next due date and certificate, reminders before each due date, an alarm when a sensor goes overdue, and a monthly QA review, so no reading is taken by an out-of-date probe.

• Free calculators

• Mean Kinetic Temperature (MKT) CalculatorMean kinetic temperature (MKT) = (ΔH ÷ R) ÷ −ln of the average of e^(−ΔH/RT) across readings, with T in kelvin, R = 0.0083144 kJ/mol·K and ΔH commonly 83.144 kJ/mol. This free calculator gives MKT, the arithmetic mean and the range from pasted readings, in your browser.

• Playbooks

• Playbook: Cold Room Alarms Someone Acts On at 2 amMake cold room alarms reach someone who acts: warn on drift before the limit, alert by screen, email, SMS and push, escalate in levels until acknowledged, require a comment on every acknowledgement, alarm on comms and sensor faults, keep rosters current and review time to acknowledge weekly.

• Comparisons

• Manual Temperature Logs vs Continuous MonitoringManual temperature logs check freezers and cold rooms a few times a day and leave nights and weekends as gaps. Continuous monitoring reads every minute, alarms and escalates within seconds, warns before a breach and keeps an audit trail, which matters wherever a short excursion costs a batch.

The product behind these guides. ColdWatch — Every freezer, every minute. Book a 30-minute working session.

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