It typically consists of a display unit, a light source, a photo sensor, and a rotating object or wheel. The HTM 890 Photo Contact Digital Tachometer is a highly accurate and reliable instrument designed for measuring rotational speed in mechanical and industrial applications. This tachometer features a large, easy-to-read LCD display and a wide range of selectable measurement units. The HTM 890 also features a self-calibrating system that helps to ensure accurate measurements and a wide range of digital output options, including a serial port and a USB port. This tachometer is suitable for monitoring a variety of rotating machinery such as motors, pumps, compressors, blowers, and fans. It is also capable of storing up to 99 readings for comparison and troubleshooting purposes.
Used in industrial applications to monitor the performance of motors.
Full Digital, Micro Controller LSI circuit design for high reliability and versatility
Comes with a sturdy, easy to carry/handle carrying case box with foam padding for protection against impact.
Ergonomically designed for handheld based operations for risk free RPM measurement at all times.
Excellent Quality, compact size and accurate reading.
Economic and effective Battery power utilization
60 RPM – 50,000 RPM (contact side)
6 m/min – 5000 m/min (surface speed)
60 RPM – 1,00,000 RPM (photo side)
0.1 RPM: 0 – 1000 RPM | 1 RPM: > 1000 RPM
0.01 : 0 – 100 meter/min | 0.1 : > 100 meter/min
5 DIGITS 10mm(0.38”) height RED LED
+ 0.05% + 1 Digit
1 second
Quartz Crystal Controlled
75mm (3 inch) to 300mm (12 inch) (Photo side)
Indicated by “Lobat” when the battery
voltage drops below operating voltage
‘Last’, ‘Max’, ‘Min’ Values memorized automatically, upto 120sec can be recalled
4 X 1.5V AA Battery. Auto Shut off feature included
0° Celsius to 60° Celsius (32° F to 140° F )
70 x 200 x 40mm (2.8 x 7.8 x 1.6 inch)
320grams including battery
We very pleased with the Non Contact Type Tachometer provided by Systems Tech The tachometer is extremely accurate and reliable. It is also easy to use and maintain. The after-sales services offered by Systems Tech are also excellent. They provided us with timely support and assistance whenever we needed it.
We recently purchased a Contact Type Tachometer from Systems Tech andwe are very pleased with the product. It is of excellent quality and has been extremely easy to use. The customer service provided by the company was excellent, and the delivery was on time. We would highly recommend Systems Tech for any of your instrumentation needs
We have been using the non-contact type tachometer from Systems Tech, and it has been a great experience. The tachometer is easy to use and provides accurate readings. It is reliable, and the support provided by Systems Tech is exceptional. We are very happy with the product and services provided and will continue to use them in the future
We needed a reliable tachometer to accurately measure the speed of our equipment. The tachometers from Systems Tech gave us exactly what we were looking for. The ease of installation and use of the product made it an ideal product for us. The customer service provided by Systems Tech was also top-notch, and the product was delivered on time.
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