How to choose calibration points

Data loggers are calibrated at 'calibration points' - specific measurement points within the data logger's measurement range. Loggers can be calibrated at standard points or at points which are specific to your application. This article will help you choose the correct calibration points for your data logger.

Tinytag data loggers are designed to be as accurate as possible across their whole measurement range.

When choosing what points to have your data logger calibrated at, you should consider the conditions that the logger will be used to monitor.

We recommend our standard calibration points, as these have been chosen to reflect the conditions experienced in the majority of applications.

If you require different calibration points, you can specify your own custom calibration points.

This article details both our standard calibration points and how to choose custom points.

Standard calibration points

Our standard calibration points reflect the conditions experienced in most common applications.

Temperature and Relative Humidity Loggers

Temperature: 0 and 30°C

Humidity: 20 and 80 % RH (at 25°C)

If you require calibration at other points, we can calibrate units within the following ranges (where appropriate):

Temperature: -30 to +135 °C

Humidity: 20 to 90 % RH (at 25°C)

CO2 Loggers

0 to 2000ppm units: 500, 1000 and 1500ppm

0 to 5000ppm units: 500, 2,500 and 4000ppm

Energy Loggers

For energy loggers, our calibration points cover a range of currents from 10 to 1,000A per-phase in both the single and three phase modes of operation. Voltage, power and power factor readings are also tested.

Voltage and Current Loggers

Please contact us to discuss your requirements for voltage and current loggers. Our standard points are:

0 to 2.5V loggers: 500mV and 2,000mV

0 to 25V loggers: 5 and 20V

0 to 20mA loggers: 8 and 16mA

Choosing custom calibration points

If our standard points do not meet the requirements of your application, you can choose custom calibration points for your data logger to be checked at.

The points you select should reflect the conditions that your data logger regularly monitors.

At least two points across a measurement range should be chosen. For example:

A Tinytag Talk 2 TK-4014 temperature data logger used in a clinical fridge needs to accurately record fridge temperatures. Two calibration points of +2°C and +8°C would reflect the conditions that the data logger is required to measure.

It is not recommended to calibrate at the extremes of a data logger's measuring range as accuracy can decrease in these areas, and any adjustments made based on these measurements could affect how the logger reads at other points.

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