Rtm-400 Máy Đo Lực Căng Hans-Schmidt Vietnam- Ans

Trummeter for measuring belt tension and for control the strand force of V-belts, tooth belts, power belts or similar. The optimal life time of a belt is depending on the correct belt tension. The set point for belt tension is specified as natural frequency in Hz or strand force in N.

The belt tension can be measured only when the drive is stationary. Preferably, the belt tension should always be measured at the center of the longer belt strand between the two drive pulleys. The distance to the belt can be 3 - 20 mm. Depending upon ambient light and surface of belt, the measurement can occur from a distance of max. 60 mm, whereas darker light and better reflection (can be obtained by attaching a reflective tape) admit a larger measuring distance.
Measurement:
The belt is tapped in order to make it natural oscillating. This static natural frequency is then measured by the probe with the aid of pulsed light. Care must be taken to ensure the light is sufficiently reflected by the belt. A reflective tape must be fixed if necessary.

Note
Measurement deviations of up to ±10 % for several measurements taken on the same drive belt are as a rule not caused by a measurement error or fault in the unit. In most cases, measurement deviations are due to the mechanical tolerances of the drive systems.

Attention! Newton- or poundforce-calculations have a square factor higher error result!

To measure the belt mass precisely, we recommend that you weigh the drive belt and then recalculate this weight based on a belt length of 1 meter.

The  table above contains comparison values for some belts.

Measuring range:	10 - 800 Hz
Digital sampling error:	< 1 %
Indicator error:	±1 Hz
Total error:	< 5 %
Adjustable measuring units:	Hz (Frequency) or N, lbf (Strand force)
Measuring distance:	3 - 20 mm
Display:	2 line LCD, 16 characters per line
Languages:	10 languages (german, english, french, italian, spanish, portugese, swedish, norwegian, danish, finnish)
Input ranges:	Free strand 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 humidity:	85 % RH, max.
Power supply:	9 V - Battery
Housing:	Plastic (ABS)
Dimensions:	126 x 80 x 37 (LxWxH)
Weight net (gross):	Approx. 170 g (approx. 660 g)

Specifications subject to change without notice!