In all industries, temperature is the most monitored factor. Particularly in the process industry, precise temperature measurements are crucial for the smooth operation of all processes. And for that, we need temperature calibrators.
A temperature calibrator is any tool that can be used to check if temperature data from measuring equipment are reliable. They can also be used to check if temperature device readings fall within the accuracy and error tolerances that have been set.
Many different temperature calibrators exist, ranging from a portable instrument for lab calibrations to a robust dry block temperature calibrator, and they serve specific calibration purposes. Today, we will walk you through dry block calibrators - what they mean and why they are used for temperature calibration!
What are Dry Block Calibrators?
Dry block temperature calibrators come with metal inserts with holes bored into them for mounting temperature sensors. These holes range in size, and the metal insert can be removed from the outside. In this arrangement, the metal near the temperature source and the temperature sensors are close.
Since they don't contain any liquid, dry block calibrators can also be known as dry well calibrators. Dry block calibrators are mostly used in the metrological calibration of temperature measurement equipment's thermal and thermodynamic characteristics, such as temperature sensors, RTDs, platinum resistance thermometers, and other measuring devices.
These devices deliver extremely precise and trustworthy results as the most popular temperature calibrators. Also, a dry-block calibrator could be the best choice to gauge a sensor's mobility or accuracy.
Where are Dry Block Calibrators Used?
Dry block calibrators provide good stability, a compact, lightweight shell for easy transport to the field, and an insert that can often calibrate one to three calibrating sensors simultaneously. However, there are other significant uses as well.
Temperature Range
Dry block calibrators can calibrate temperature instruments with a particularly large temperature range. Some calibrators can be used at temperatures as high as 100 degrees Celsius. Also, dual dry block calibrators can calibrate temperatures between -100 and 350 degrees Celsius.
Portable
Dry block calibrators are also exceptionally heavy-duty portable that can be utilized for both in-home and tough outdoor calibrations. It is usually a good idea to have a portable calibrator model on hand for short-site calibrations.
Best for Small-Diameter Sensors
Linear sensors with small diameters, such as sheathed thermocouples, thermistor probes, and RTD probes, calibrate effectively using dry-block calibrators. Further, this accuracy level can also be raised using a platinum resistance thermometer (PRT), an external reference thermometer.
Suitable for Multiple Sensors
Another useful feature of these calibrators is the number of sensors that can be calibrated simultaneously. From 10 to 40 sensors can be calibrated in a dry-block calibrator. However, it is better not to overload. Nevertheless, simultaneous calibration of two or three sensors is only possible with dry block calibrators.
But How do they Work?
A dry block calibrator/furnace works on a simple heating principle. Let's break it down. First, the dry block calibrator's furnace is brought to the desired temperature by heating or cooling a metal block. Then the temperature of its temperature field is maintained uniformly and steadily.
The heated or cooled metal constant temperature rapidly functions as a medium to offer an adjustable and controlled stable reference thermometer for the measured sensor to calibrate temperature equipment.
Usually, a dry block has a removable insert featuring suitable holes or bores for temperature sensors to be inserted into. The dry block normally measures the temperature internally, but you may also use an external reference temperature sensor by inserting it into one of the holes.
A dry block often got replaceable points with several options. Each is drilled over multiple holes to assist in the calibration of various temperature sensors.
Automate Temperature Calibration with Nagman
In the end, dry block calibrators deliver excellent performance at an affordable cost. They are portable, light, and quick, making them the perfect choice. Nagman offers a wide range of high-quality dry block temperature calibrators for all needs.
Whether you work in the food sector and need to calibrate thermocouples used in engines or monitor oven sensors, Nagman has years of experience to help you choose the ideal dry block for your particular needs! Get the highest quality dry block calibrators for better accuracy with Nagman!
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