TROUBLESHOOTING
SYMPTOM CAUSE TO CORRECT
METER WON’T
TURN ON
Batteries are dead Replace Batteries
Battery contacts are corroded Clean contacts and replace batteries
Meter has sustained damage
Consider meter repair or replacement
Gates certification / evaluation / repair service
CAN’T OBTAIN A
BELT TENSION
READING
Sensor is too far away from belt surface
Move sensor as close as possible without interfering with
vibrating belt span
Belt is too loose to generate frequency signal Tighten belt
Background noise is excessive Temporarily eliminate background noise
Meter is set in the incorrect frequency range
“Standard” frequency range is generally best
"Range" to select the correct frequency
Low (L) = 10 – 50 Hz
Standard = 20 - 500 Hz
High (H) = 500 – 5000 Hz
Belt span frequency is less than 30 Hz
Microphone performance is reduced considerably
at frequencies less than 30 Hz
Excessive wind is blowing across Microphone Shield or shelter microphone
Belt span is long and frequency very low
Tighten belt
Check to see if calculated belt frequency is below 30 Hz
Artificially reduce belt span length using a block, etc.
MULTIPLE BELT
TENSION
READINGS ARE
SIGNIFICANTLY
DIFFERENT
Belt tension is near absolute minimum threshold Tighten belt and see if reading variation is reduced
Some tension reading variation is normal
It is normal for the meter to detect slightly different
fundamental span frequencies
Take at least three tension readings and average the results
The drive has been rotated between readings
Belts must fully seat on pulleys / sheaves and equalize for
tension to stabilize
Pulley / shaft eccentricity can change belt tension
significantly; establish minimum / average / maximum
tension level limits and set belt tension accordingly
METER
READINGS
SEEM
INCORRECT
Belt span length may be too short
The minimum span length recommended for synchronous
belts is 20X the belt pitch
The minimum span length recommended for V-type belts
is 30X the belt or rib top width
METER BATTERY
LIFE IS SHORT
Meter usage is heavy
Fresh alkaline batteries provide approximately 15 hours of
meter usage
Non-alkaline type batteries are being used Use only alkaline type batteries
350C SONIC TENSION METER
GATES
8
GATES.COM
TROUBLESHOOTING
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