Have we lost our way with vaccine monitoring?

Twenty years ago we had domestic fridges with min/max thermometers and had to daily downloads to ensure they weren’t freezing. Now we have vaccine fridges and temperature loggers, and we are still downloading daily. Why?

Temperature Monitoring

Temperature monitoring

This is the first blog in a series that will discuss various aspects of temperature monitoring, with a focus on temperature loggers. Much of what is discussed can also be applied to thermometers. One of these blogs will actually discuss the differences between thermometers and temperature loggers. Money, reputation and lives There are some things […]

Common temperature logger mistakes: #5 Not retrieved

Once again, this problem is really obvious in hindsight but is easily done. The way it comes about is quite simple and this is fairly common… Someone buys a logger and uses it They leave the company The new person has no idea that the logger exists, let alone that they need to do something […]

Calibration vs Certification?

What is the difference between calibration and certification

We are often asked about temperature logger calibration versus certification. There is some confusion between the two and what is required. This should clarify many of the questions:   What is Supplied: 1. Our temperature loggers are tested at the point of manufacture to make sure they meet the specifications. This is the Quality Control […]

Temperature Logger Specifications: Part 2

Starting options Temperature loggers often offer a range of techniques to start the logging. Most loggers provide an immediate start capability via the software. A manual start option (normally a push button) is useful for where the loggers are stored for some time before use and a PC is not available. For example, a farm or […]

Temperature Logger Specifications: Part 1

In this final part on temperature loggers we investigate the other specifications and features that differentiate temperature loggers and thermometers. Software The great benefit of loggers is the ability to view the results and save them for later use. Each logger will typically have its own software. They vary in what the software can do […]

Temperature Logger – Sample rate and memory

This part continues exploring the jargon involved with temperature loggers and focuses on the sample rate and memory size. These are critical because they determine how long a logger can be used for before information is lost.   Sample rate This is how often the logger will record the temperature. Most loggers offer a programmable […]

Temperature Logger discrepancy – “But why don’t they agree?”

A very common question is “why don’t two monitoring devices show the same temperature?” For example a fridge may have a digital display and a temperature logger but they never show the same temperature. Is the logger discrepancy showing the logger is wrong, because surely it must be impossible for them to both be right? […]

Temperature Measurement: Sources of Errors

It should be noted that the accuracy of temperature measurement is dependent upon a number of factors. The Instrument The device itself will cause errors because of limitations in digital processing and physical issues (eg “cold junction compensation” with thermocouples).   The Sensor The sensor is often the greatest source of error in the reading. […]

Temperature Loggers: Accuracy versus Resolution

Resolution The resolution is an indication of how specific the answer is. It is measured in degrees. The smaller the value, the better the device. For example, a resolution of 0.5° means that a reading of 3.5° could be between 3.25° and 3.75°. A resolution of 0.1° means that a reading of 3.5° could be […]

Temperature Loggers vs Thermometers

Thermometers Thermometers simply display the current temperature. Many people will already be using thermometers within their business. However, they have some significant limitations. Just because the temperature is right right now (as shown on the thermometer) does not mean that it was always right. A min/max thermometer partially fixes this issue by telling you if […]