Selecting Batteries for the Sonic Tension Meter 508C

For optimum meter performance, use two disposable AAA alkaline batteries.

Gates’ 508C Sonic Tension Meter is designed to use two AAA alkaline batteries, rated for 1.5 volts each (3.0 volts combined).  When used with new alkaline batteries, the estimated continuous use time is 10 hours.  Using other battery types, such as lithium ion (Li-Ion) or nickel cadmium (NiCd), may reduce the meter run time. 

Rechargeable batteries are not recommended, as they reduce the run time in several ways.  They are generally rated for 1.2 volts, so they appear partially discharged to the meter even when fully charged. Also, the voltage will fall below the minimum requirements for the 508C before the batteries are fully discharged. In addition to the lower voltage rating, continuous charge and re-charge cycles can decrease the run time further.

Note:  The information in this blog post also applies to the older 507C model.

Belt Installation and Maintenance Toolbox

Gates recently introduced a new toolbox product to contain some of the most useful Gates tools used for belt installation and maintenance operations. As user sophistication increases, it is becoming more common for technicians to have the EZ Align and Sonic Tension Meter tools in their possession. This new case keeps these tools and accessories together and well protected.

The case includes sheave gauges and the Pocket Preventative Maintenance Guide. Users that have already purchased one or both tools can simply place them in the new case. The high density foam has been pre-cut perfectly to hold them securely. Additional tools and accessories can be purchased separately. The Gates product number for this toolbox is 7420-2000.

Sonic Tension Meter Accessories

The Sonic Tension Meter model 507C (7420-0507) is supplied with:

• a cord sensor (7420-0206)
• a storage case
• batteries
• a manual
• a mass constant quick reference card

Two additional sensors are also available for purchase separately. The flat flexible sensor (7420-0205) can be bent, making it easier to measure tension in tight spaces. The flexible sensor also allows for measurements with one hand. The inductive sensor (7420-0212) measures a magnetic field instead of sound. The inductive sensor is useful for very noisy or windy environments. Find out more at Gates.com.

Flat Flexible Sensor for the Gates Sonic Tension Meter

Gates is now offering a new flexible sensor (7420-0205) for use with the Sonic Tension Meter 507C. The new flat (paddle-type) sensor replaces the discontinued round flexible sensor (7420-0204).

The new paddle-type sensor offers:

• Increased durability
• Increased flexibility
• Comparable microphone sensitivity and response
• Reduced clearance requirements (due to the flat sensor's ability to pick up sound from the sides instead of the end)

For more information on the Gates Sonic Tension Meter and accessories, please visit www.gates.com/stm/.