Remote monitoring system
Also known as: remote monitoring, temperature monitoring system
Short definitionA system that continuously records room temperature, humidity, door and equipment status with sensors and shows them over the internet. When a value leaves its limits it sends an alarm to a phone.
Each room gets a temperature and humidity sensor and each door a contact; these and the controllers are wired to a data logger. The values go to the cloud and are watched from a phone or a computer. When a limit is passed an SMS, an e-mail or an app notification arrives. A compressor that stops at night is noticed the moment it stops, not in the morning, and the product is saved.
Food safety (HACCP) audits and pharmaceutical stores require an uninterrupted temperature record; an automatic, tamper-proof record replaces the hand-written chart. Monitoring should be asked about as a separate item in the quotation. New controllers connect directly over Modbus or a cloud link, and stand-alone sensor boxes are added to older plants. The same records also help in reviewing energy use and defrost frequency.