Sanwa SE300 Non-contact Digital Tachometer
The Sanwa SE300 is a lightweight, handheld digital tachometer engineered for rapid, non‑contact measurement of rotating machinery. Utilizing a visible‑light photoelectric reflection system, it detects rotational speed by aiming its lens at an affixed reflective sticker on the target, enabling accurate readings from 50 mm up to 500 mm away. Its ergonomic pistol‑grip design ensures stable one‑hand operation, while a bright backlit LCD presents five‑digit readings with clear unit indicators, minimizing user error in dim environments.
Switching between six measurement modes revolutions per minute (rpm), revolutions per second (rps), interval (ms), rotation count, rim‑speed in meters per minute (m/min), and meters per second (m/s) is accomplished via a single function key, preserving workflow continuity. Data‑hold, MAX/MIN capture, and an auto‑power‑off feature (cancelable) extend battery life and simplify long‑term monitoring. For contact measurements, an optional ENC‑3 adapter attaches directly to shafts, accommodating both contact maker and rim‑speed ring accessories.
Constructed for indoor use (up to 2000 m altitude) and rated for 5 °C–40 °C operation, the SE300 balances precision, versatility, and durability making it ideal for maintenance technicians and quality‑control inspectors in manufacturing, HVAC, and motor‑service environments.
Features:
• Ergonomic pistol‑grip design for stable, one‑handed operation.
• Six versatile measurement modes: rpm, rps, ms, count, m/min, m/s.
• Wide non‑contact detection range (50–500 mm).
• Contact measurement capability with optional ENC‑3 attachment.
• MAX/MIN display and data‑hold functions.
• Bright backlit LCD for low‑light conditions.
• Auto power‑off after ~2 min (cancellable).
• Tripod‑mountable via standard 1/4‑20 UNC thread.
Specifications:
| Parameter | Value |
|---|---|
| Measurement Method: | Visible‑light photoelectric reflection; contact |
| Detection Distance: | 50 – 500 mm |
| Display: | 5‑digit backlit LCD |
| Update Interval: | 1 s (rpm, rps, cycle, m/min, m/s); 0.1 s (count) |
| Measurement Modes & Ranges: | Non‑contact: rpm 30.0–99 999; rps 0.50–1 600.0; ms 0.600–1 999.0; count 0–99 999Contact: rpm 30.0–19 999; rps 0.50–333.00; ms 3.000–1 999.0; count 0–99 999; m/min 3.0–1 999.0; m/s 0.05–33.00 |
| Accuracy: | ±(0.03 % rdg + 1 dgt) (non‑contact) |
| Power: | 2×AA (LR6); 28 h (alkaline, backlight off) |
| Auto Power‑Off: | ≈2 min (cancelable) |
| Operating Conditions: | 5 °C–40 °C, ≤80 % RH; indoor, ≤2000 m altitude |
| Dimensions (H × W × D): | 210 × 60 × 50 mm |
| Weight (with batteries): | 218 g |
Applications:
- Non‑contact rotation speed measurement of motors and fans.
- Contact‑type tachometry with ENC‑3 attachment.
Package Contents:
- 2x AA‑size dry cell batteries (R6P/LR6)
- 50x Reflective sticker sheet
- 1x Carrying case (C‑SE300)
- 1x Instruction manual
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