Infrared Psychrometry | Exergen D-Series guide

D-Series Handheld IR Scanners

™

Psychrometrics, the science of measurement and control of moisture in air, is based entirely on thermodynamics of air and water: the properties and temperature. Relative humidity (RH) is one of the common parameters used to describe the psychro- metric state of air in an environment, in an oven, or any area where moisture content can influence product quality or personnel comfort.

The accurate and reliable measurement of RH is one of the most challenging tasks in industry, and has included devices such as chilled mirrors, lithium chloride cells, aluminum oxide sensors, capacitance polymer sensors, hair hygrometers, carbon hygristors, and a wide variety of technologies to meet the requirements. Calibration and certification has been even more difficult, due to the fact that most humidity measuring devices employ indirect methods and therefore have limited traceability.

Infrared

Psychrometry

with the

Microscanner

D-Series:

Measure

Relative Humidity

Certified Accuracy

±0.5% RH

Air Flow

Thin layer of evaporating water at thermodynamic equilibrium: wet-bulb temperature

Wet Porous Material

				FOR
A	MUST
		9001
	ISO
			9002
	ISO
				9003

	ISO
	TRACEABILITY
	PROGRAMS

The Infrared Psychrometry method with the D- Series is a direct application of the thermodynamics and mathematics that defines humidity: the D-Series is capable of measuring the true wet-bulb tempera- ture accurately, and with the dry-bulb temperature, the RH can be computed to a very high accuracy via standard psychrometric equations. The process is as follows:

A porous material (filter paper is suitable) is wetted with water (purity is not important), and air from the environment flows across the surface to bring the surface to thermodynamic equilibrium with the air, i.e. to the lowest possible temperature produced by the evaporating water, which is the wet-bulb tem- perature.

51 Water Street, Watertown, MA 02172 USA

800-422-3006 • 617-923-9900 • Fax 617-923-9911

D-Series specifications

The Exergen D-Series infrared thermometers represent a significant advancement in the field of non-contact temperature measurement. Designed with both accuracy and usability in mind, these devices are well-suited for various applications, including clinical settings, industrial environments, and home use.

One of the standout features of the Exergen D-Series is its highly accurate infrared technology. Utilizing patented technology, the D-Series provides reliable temperature readings without the need for direct contact. This is particularly beneficial in medical environments where hygiene is a top priority, allowing for swift temperature checks while minimizing the risk of cross-contamination.

The D-Series employs a unique scanning method that allows it to measure the temperature of the temporal artery in the forehead. This results in readings that are not only quick—often taking only a second—but also precise, providing users with confidence in their measurements. The device has been clinically validated against other temperature measurement methods to ensure its accuracy, which is crucial for effective patient care and monitoring.

Another important characteristic of the D-Series is its user-friendly design. The thermometer is lightweight and ergonomically shaped, making it easy to handle and maneuver. Its large, backlit display allows for easy reading in various lighting conditions, and it can store multiple readings, which is beneficial for tracking temperature changes over time.

Additionally, the D-Series incorporates advanced features such as fever alerts, which provide audible notifications when a temperature reading exceeds a predetermined threshold. This feature is especially useful in pediatric care, enabling caregivers to respond promptly to potential fever situations.

The Exergen D-Series is also designed with efficiency in mind. It requires minimal calibration and maintenance, making it an ideal choice for busy healthcare environments. The device is powered by long-lasting batteries, further enhancing its practicality for continuous use.

In conclusion, the Exergen D-Series infrared thermometer showcases a perfect blend of advanced technology, ease of use, and practical functionality. Its accuracy, design, and additional features make it a valuable tool across various settings, providing users with reliable temperature readings that contribute to better health outcomes and overall well-being. Whether in a clinic, workplace, or at home, the D-Series stands out as a dependable solution for accurate temperature measurement.