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SupaRule Cable height meters Presented by: Gary Carroll Director

SupaRule Cable height meters Presented by: Gary Carroll Director. Feb 2004. Using the SupaRule Cable Height Meter. Cable Height Meter. Ultrasonic handheld meter for measurement of C able height C able sag O verhead clearance to ground . Safest method for cable height measurement.

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SupaRule Cable height meters Presented by: Gary Carroll Director

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  1. SupaRule Cable height meters Presented by: Gary Carroll Director Feb 2004

  2. Using the SupaRule Cable Height Meter

  3. Cable Height Meter • Ultrasonic handheld meter for measurement of • Cable height • Cable sag • Overhead clearance to ground. • Safest method for cable height measurement. • By eliminating cable contact and the use of heavy fiberglass poles

  4. Cable Height Meter Key advantages: • Safety: • No contact with conductors • One simple solution: • One button-one man operation • Easy to use. • Efficient use of resources.

  5. Cable Height Meter • Competition • Telescopic rods: • Cumbersome, heavy to carry, break easy. • Accuracy depends heavily on experience of user. • Frequent calibration required. • Laser • Difficult to target conductors. • Accurate units cost €3,000-€5,000

  6. Cable Height Meter • Theory of operation • Sends (ultra) sound wave to target • Measures time to echo • Calculates distance based on speed of sound • Adjusts for air temperature

  7. CHM Operation • Select: M(metric) or I (imperial) at the back of unit. • Set the CAL mode switch to theWIRE position. • Press the ON key to power on • Stand directly underneath the conductors(s) to be measured. • Press the MEASURE Key to take measurement • Press the READ key to display each of the stored wire height differences (Stored Measurements).

  8. Newer CHMs: Same Functions/ Different Implementation Older CHM had a Clear (C)button, On newer models, to clear screen press Read (W: wire) and Measure (+) buttons together. Older CHM had a battery check button. Newer models have a low battery signal appearing on screen, if battery is low. Older units used (M) measurement to select differences between wires; newer models use READ button. Taking a reading: Press Measure (+). Unit automatically captures all wires within the ultrasonic cone. Read measurement by scrolling down the Read (W for wire) button, from 1 (lowest wire) to 2 (spacing in between cable 1 and 2), 3 and up to 6 wires, provided conductors are stacked above each other. If taking reading of wires parallel to each other, a number of separate measurement need to be taken. CHM Operation

  9. Specification Accuracy: 0.5% ± 2 digits Minimum gap between wires:150 mm Operating Temp. Range:-10 °C to 40 °C Battery Life (9V Alkaline type): 50,000 measurements Auto power off delay: 3 minutes Serial number location: underneath battery. Models available: 3 wires: CHM 300 6 wires: CHM 600 3 to 15 m (=10 to 50ft) Standard units: CHM 300/600 3 to 23 m (= 10 to 75ft) Model “E”: CHM 300/600E Cable Height Meter

  10. Cable Height Meter

  11. Check battery is inserted correctly. • Open battery door on the bottom rear of the unit. • The battery is inserted with the terminals inwards. • The + and - symbols on the battery should correspond with the+ and - symbols on the inside of the battery compartment. Screen is blank Unit does not measure all wires • Ensure that horizontal distances between wires are within the sonic beam. • Ensure CAL mode switch is on correct position, i.e. WIRE for cable height measurement, and WALL for horizontal distance measurement. • Ensure no walls or similar obstructions within 2 meters either side of unit, as reflectionsfrom these can interfere with correct operation. Incorrect readings Cable Height Meter • This indicates a “poor target”, and normally happens when the cables are moving due to wind, etc. If the display shows- - -.- - -

  12. Do: Position the unit on theground, directly underneath the conductor to be measured. Align the unit in the direction of the conductor, with the cone , pointing towards the conductor. Keep the unit dry; if wet, leave upside down in a warm area Don’t: Avoid clutter around conductor to be measured Avoid water, rain, snow, humidity. Avoid sudden changes of temperature. Cable Height Meter

  13. Warranty: 12 months from purchase date. Calibration: The CAL mode switch allowsthe user toperiodicallycheck the unit, to ensureit is still operating withinspecification. Repair: SupaRule offers repair at a standard rate. Quick turn around time - less than 1 week from receipt of unit. Return rate: Under warranty - better than 0.5% / year; typically 0.2% Product Life 5 -10 years Cable Height Meter • SupaRule offers calibration certificate at €163 / unit.

  14. Complementary products: Dynamic Target (DT80) with Model CHM 300DT Cable Height Meter • Tripod • Leather case

  15. Distance Measurement Thank You Feb 2004

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