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BTM-400PLUS Belt Tension Meter

Made in GermanyCHECK-LINE® BTM-400PLUS

The BTM-400PLUS measures the static tension of flat, V and ribbed belts of rubber, leather, fabric and composite materials accurately by measuring the natural frequency (Hz) of a segment of the belt. Just tap the section you want to measure while facing the sensor to that section then convert it into tension units of newtons (N) or pounds force (lbf).

The instrument uses a pulsed ruby red light source to measure the natural frequency of the vibrating belt. Unlike competitive models, the BTM-400PLUS is NOT affected by ambient noise, providing quick reliable results in all production and field applications.

Maximum measurement frequency 800 Hz, however most belts will break near 400Hz

Supplied with both plug-in and cable-connected sensors

  • Includes two (2) separate Sensors – a plug-in type for one-handed operation and a cable-connected type for measuring belts with limited access space
  • Compact, easy-to-use design
  • Readings unaffected by nearby magnetic fields or noise
  • Displays tension in newtons (N) or pounds force (lbf) or natural frequency in Hertz (Hz) - selectable
  • Displays Menu in English, German, Spanish, Portuguese, French or Italian & others - selectable

Complete Kit
The BTM-400PLUS is supplied as a complete kit, including:
- BTM-400PLUS belt tension meter
- plug-in sensor
- cable connected sensor
- 9-volt battery
- instruction manual
- delivered in a foam-fitted, hard plastic carrying case.

Measuring Range*10 - 800 Hz
Accuracy**± 5% or better
CasingABS Plastic
Display2 line LCD, 16 characters per line
Power Supply:9V battery
Calibration CertificateIncluded
Input ranges:Free stand length: up to 9.99 m
Belt mass: up to 9.999 kg/m
Temperature Ranges:Operation: +10 °C ... 50 °C
Transport: -5 °C ... +50 °C
Air humidity85% RH, max.
Housing:Plastic (ABS)
Dimensions:126 x 80 x 37 (LxWxH)
Weight net (gross)Approx. 170 g (approx. 660 g)
Warranty:2 years

Typical Applications
Typical Applications

External Probe Dimensions

probe dimensions

*BTM-400PLUS can measure up to 800 Hz, however most belts will break near 400Hz

**Static tension (T) accuracy depends on the precision of entered values for free belt span (L), density (d) and natural frequency (f) of the vibrating free belt span that has been plucked or struck, as noted in the relationship: T = 4dL2f2. Note that highest accuracy is achieved in the frequency mode where readings are accurate to <1%, ± 1 Hz.

Buy Now

BTM-400-PLUS Belt Tension Meter
€ 668,00 

CIC-BELT - Calibration Inspection & Certificate Belt Tension Meter
€ 116,00 
BTM-TFS - BTM-400 Reference Tuning Fork
€ 97,00 
BTM-400-SENSOR - Spare Cable-Type Sensor for BTM-400PLUS
€ 237,00 
BTM-PLUGSENSOR - Spare LED Plug-In Sensor for BTM-400PLUS
€ 87,00 
All mentioned prices are excluding VAT & excluding shipment costs.
Availability: Available: 1 - 3 days, Delivery time: 1 - 3 weeks, special order request

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