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Non-contact Digital Handheld Tachometer
HT-4200

A compact, handheld, non-contact Digital Tachometer that is easy to use and high-performance.

Simply attach a reflective mark to the axis as a rotation indicator, point the device at the reflective mark, and press the measurement button to display rotation speeds from 30 to 50,000 r/min with high precision and direct reading. The measurement results can be stored in the internal memory as a history, up to 10 entries. Additionally, it supports multiple reflective mark signal inputs; for example, by attaching 8 reflective marks to the axis, measurements can be taken from extremely low speeds of 4 r/min.

The ergonomically designed, easy-to-use casing is compact and slim enough to fit in a chest pocket. Since it uses a non-contact method for measurement, it is extremely safe, and there is no worry about applying unnecessary force or load to the rotating body, allowing for reliable measurements.

*Please prepare batteries by yourself.

Features

  • Small and lightweight non-contact measurement type, 129×62×26.4 mm, 90 g.

  • Large LCD display with excellent visibility (character height 10.5 mm)

  • Wide range of rotational speed measurement from 30 to 50,000 r/min (when using one reflective mark)

  • Equipped with a memory function convenient for confirming measurement results.

  • Supports multiple reflective mark signal inputs, and can also measure low rotational speeds of 4 r/min.

Specification

Measurement Department
calculation method Cyclic Calculation Method
measurement unit 1 r/min
Rotational speed measurement range
Measurement range Number of reflection marks (number of input signals)
30 to 50,000 r/min 1
15,000 to 25,000 r/min 2
10 to 16,667 r/min 3
8 to 12,500 r/min 4
5 to 8,333 r/min 6
4 to 6,250 r/min 8
measurement accuracy
30 to 12,499 r/min
 within ±1 r/min
12,500 to 24,999 r/min
 within ±2 r/min
25,000 to 50,000 r/min
 within ±4 r/min
(When there is one reflective mark)
Over range display

When the measured value exceeds each measurement range, the displayed value is fixed at the maximum value and the display shows the ERROR mark "ERROR".
detection section
detection method visible light photoelectric reflective type
detection distance 20 to 300 mm
Light source red light-emitting diode
light receiving element phototransistor
detection mark Number of reflection marks per rotation
Switchable to 1, 2, 3, 4, 6, or 8 pieces
Display Section
Display digit count 5 digits
character height 10.5 mm
method of representation LCD 7 Segment
Display update time 1 second (however, at a rotational speed of 60/reflection mark count r/min or less, it is 2 seconds)
Measurement Mode
data hold function After the measurement is completed, the final measurement value will be displayed for about 30 seconds, and then it will automatically turn off (auto power off).
Memory function Up to 10 measurement values can be stored in memory when the MEMORY/COND switch is pressed.
Since the same memory values are stored in non-volatile memory, they are retained even when the power supply is cut off.
Pulse count setting function 1, 2, 3, 4, 6, 8 P/R (switch) * Corresponds to the number of reflection marks in the rotational speed measurement range (number of input signals).
General Specifications
Power Supply AA batteries ※ (1.5V) × 3 pieces
continuous usage time Approximately 20 hours (using alkaline batteries, at 20 °C)
Low Battery Indicator When the battery voltage drops below approximately 3.3 V, the LOW mark light turns on.
Operating Temperature Range 0 to +40 degrees Celsius
Storage Temperature Range -10 to +55 °C
Operating Humidity Range 35 to 85 % RH
Storage Humidity Range 35 to 85 % RH
Weight Approximately 90 g (excluding the battery)
Outline Dimensions 62 (W) × 129 (H) × 26.4 (D) mm

Outline Dimensions
Conformity to standards (CE marking)
EMC instruction 2014/30/EU Standard EN61326-1
RoHS Directive 2011/65/EU Standard EN IEC 63000
Others
Accessories 1 sheet of reflective marks (25 pieces, 12 mm square), 1 instruction manual (Japanese-English)
Price  
Option
  • HT-011 反射マーク（12 mm角25枚取りシート 10シート1組）：

Please prepare dry batteries by yourself.

Option

  • HT-011 Reflective Mark (10 sheets = 1 set)
    HT-011 Reflective Mark (10 sheets = 1 set)
Inquire about this product.

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Last updated: 2025/09/03