This premium scale offers all the qualities of a traditional hanging balance with the simplicity, convenience and accuracy of digital operation.
Spring pressure can have a dramatic effect on the life and performance of carbon brushes. As spring pressure lowers, the electrical wear rate of the brush increases.
In addition, very weak spring force can lead to bouncing and chatter of the brush on the riding surface. Inconsistent spring force can lead to selective action, increased dusting, chance for arcing, etc. This leads to increased maintenance and reduced brush life and can lead to damage to the machine.
Increase the life of your brushes by adding ‘Check Spring Pressure’ to your regular maintenance schedule. Detect issues with spring pressure before any damage is done to the brushes or motor.
Spring Pressure(P.S.I) = Measured Force(lbs) / Brush Thickness(in) x Width
Refer to the chart below to calculate optimal spring force.
On/Zero, off, hold, units
9v alkaline batter (included)
(Switchable Unites – kg, lb, lb/oz) 10 kg x 0.01 kb (22 lb x 0.02 lb 1/4 oz)
(0.6″/15mm) 7 segment LCD
0° C to 40° C (32° to 104° F)
CE electromagnetic compatibility
(Tested to comply with FCC standards)
Industrial D.C Applications
4.0 – 6.0 P.S.I. (280-420 g/cm2)
WRIM & Sync. Rings
3.5 – 4.5 P.S.I. (240-310 g/cm2)
High Speed Turbine Rings Soft Graphite Grades
2.5 – 3.5 P.S.I. (170-240 g/cm2)
Metal Graphite Brushes
4.5 – 5.5 P.S.I. (310-390 g/cm2)
Fractional HP Brushes
4.0 – 7.0 P.S.I. (280-490 g/cm2)
5.0 – 8.0 P.S.I. (350-560 g/cm2)
Helwig offers high-quality upgrades and custom designs to hydro generators that will ensure superior performance in the field. These upgrades are in addition to the expertly engineered turbine brush holders, adjustable slip ring holders, and constant force springs that deliver maximum reliability.
Many times, brush holders that use constant force springs are not constant force at all. A proper holder allows full spring force throughout the brush’s life. Most holders are poorly designed and fail to be “constant force” for two main reasons:
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