Overview: The HTM-100M/100F and HTM-500M/500F are mechanical precision hand tachometers designed for universal measurement of rotational speed, ranging from 10 to 50,000 rpm, as well as linear speed in feet and meters. These devices do not require batteries and are equipped with a protective rubber shroud. An ATEX-approved version is available for use in explosive atmospheres.

Specifications: The tachometers feature a dual scale for rpm and linear measurements, with different scales for each model. The HTM-100M and HTM-100F measure up to 10,000 rpm, while the HTM-500M and HTM-500F measure up to 50,000 rpm. Accuracy is within +/- 0.5% of the full-scale value. The devices are housed in plastic, with dimensions of 155 x 85 x 55 mm and a weight of 300 g.

Design and Features: The tachometers are ergonomically designed for one-handed use, featuring a large, clear dial with a 270-degree scale for easy reading. A push-button pointer lock retains the last reading. The devices are supplied in a foam-filled, hard-shell carry case with an instructive booklet.

Advantages of Analogue Design: The analogue design allows operators to quickly assess whether readings are within tolerance without interpreting numbers, offering a dynamic view of changes in speed.

Applications: These instruments are used in various fields where rotational speed or linear running speed needs to be measured, such as by lift and elevator installers, rotating machinery inspectors, and plant engineers.

ATEX Certification: The ATEX-approved version is suitable for zone 1 use in all gas groups with a temperature class of T4, making it suitable for mining applications.

Technical Data: Operating temperature ranges from 0 to +40 °C, with storage temperatures from -10 to +40 °C. The product meets high-quality and safety standards, although CE marking is not applicable.

Contact Information: RHEINTACHO Messtechnik GmbH is based in Freiburg, Germany, with contact details provided for both the German and UK offices.