This premium scale offers all the qualities of a traditional hanging balance with the simplicity, convenience and accuracy of digital operation.
Features
- High performance
- Large, easy to read LCD display.
- Pre-calibrated to factory specs
- Easily re-calibrated as needed for long term accuracy.
- “HOLD” feature for one person operation on heavier loads
- Robust, compact, lightweight, and portable
- Equipped with carrying pouch and frictionless hook and strap.
- Auto power off to save on battery life
THE IMPORTANCE OF SPRING PRESSURE
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.
Maintenance Tip:
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.
To calculate Spring Pressure
Spring Pressure(P.S.I) = Measured Force(lbs) / Brush Thickness(in) x Width
OPTIMAL SPRING FORCE
Refer to the chart below to calculate optimal spring force.
Specifications
Keys
On/Zero, off, hold, units
Power
9v alkaline batter (included)
Annunciators
Tare, hold
Capacities
(Switchable Unites – kg, lb, lb/oz) 10 kg x 0.01 kb (22 lb x 0.02 lb 1/4 oz)
Display
(0.6″/15mm) 7 segment LCD
Temperature
0° C to 40° C (32° to 104° F)
Approvals
CE electromagnetic compatibility
EN 50081-1
EN 50082-1
(Tested to comply with FCC standards)
RECOMMENDED SPRING PRESSURE
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)
Traction Brushes
5.0 – 8.0 P.S.I. (350-560 g/cm2)
Learn about how to
measure spring force
Spring Assemblies Blog Posts
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.
In the steel industry, pickling operations are used to remove surface oxides and clean rust or scale buildup. These operations are very important for the manufacture of steel, but they are notorious for their corrosive atmosphere.
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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Diagnosing Brush Face Conditions
April 12, 2023
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Factors that Influence Shaft Grounding Performance
January 20, 2023
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Shaft Grounding Contamination Test
June 24, 2022
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Quality Upgrades for Hydro Generators
April 14, 2022
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Teflon Coated Brush Holders for Pickling Line
March 11, 2022
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From Probe to Patent
July 27, 2021
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K007: Exclusive Silver Graphite Brush Grade
March 15, 2021
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What Our Research Says About Constant Force Spring Differences
February 9, 2021
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Nitin Kulkarni Promoted to VP of Business Development
October 13, 2020
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Helwig Is Awarded Best Value Add & Engineering from Wolong – GE
August 21, 2020
