This manual describes how to use the Gates Sonic Tension Meter 550C. The meter is used to measure the tension of drive belts.
The Gates Sonic Tension Meter 550C is a handheld device designed for non-contact measurement of belt installation tension. It operates by analyzing sonic waves generated when vibrating a stationary belt span, converting this data into digital tension readings displayed in kilograms, pounds, or Newtons.
The manual covers essential topics including important safety warnings, identification of meter components, and step-by-step operating procedures for entering belt constants (mass, width, span length) and retrieving stored drive system data. It also explains the underlying sonic theory, methods for recalibrating non-standard belts, and details on optional accessories.
| Frequency range (Standard) | 10–1000 Hz |
|---|---|
| Belt mass input capacity | 000.1 to 999.9 g/m |
| Belt width/ribs input capacity | 000.1 to 999.9 mm/#R |
| Span length capacity | 0001 to 9999 mm |
| Data storage registers | 40 different drive systems |
When the power is switched off, press the '0', '9', and 'Power' keys simultaneously. Then use the 'Select' key to cycle through kg, lb, or N.
The red LED will turn on, or 'ERROR' will be displayed on the screen.
It can be calculated using the formula: Span length (mm) = CD2 - (D - d)2 / 4, where CD is center distance, D is large pulley diameter, and d is small pulley diameter.