Hde Cdm-50 User manual

CDM-50

& CDM-75

C A B L E D I S TA N C E M E T E R S

Operating & nstruction Manual

1475 Lakeside Drive • Waukegan, llinois 60085 U.S.A. • 847.473.4980

fax 847.473.4981 • website: www.HDElectricCompany.com

NTRODUCT ON

The Cable Distance Meter is a unique, handheld instrument, primarily used for the

measurement of the height of overhead cables. The Cable Distance Meters measure

up to 6 cables.

The CDM-50 model measures to a height of up to 50 feet (15m). The CDM-75 model

has an increased range of up to 75 feet (23m). The unit operates by transmitting an

ultra-sonic signal towards the wires, and measuring the time it takes to pick up the

echo from that signal. t automatically compensates for the fact that the speed of

sound varies with temperature by monitoring the ambient temperature using the

internal temperature sensor. The display continuously shows the ambient temperature

reading. Because the temperature sensor reacts relatively slowly to large temperature

changes, it is necessary to wait up to 10 minutes for the temperature reading to stabilize

after taking the meter suddenly from a warm to a cold environment before taking a

measurement, e.g. taking the unit from inside a warm vehicle to outside. solate the

CDM from any hot surface such as sun warmed pavement using a notebook or several

sheets of paper.

Cone

Transducer

Temp Indicator

Measurement Units

Hei ht Measurement

ON Switch

CAL Mode

Stored Measurements

Temperature Sensor

Read Stored Measurements

Make Measurement

Clear memory

Battery Compartment

(Side of Unit)

TO MAKE A MEASUREMENT

1. Select the required measurement units by setting the switch at the back of the unit to

display in feet and inches ( ) or meters (M).

2. Set the Calibrate switch to the CABLE position.

3. Press the ON key to power on the unit.

4. Position unit directly under the cable(s) to be measured.

5. Press and hold the

MEASURE key to take a

measurement. The distance

to the first cable is shown

in the Height Measurement

location in the display.

f there is more than one

cable present, the

difference in height

between each cable is

stored in memory.

6. Press the READ CABLES 1-6

key to display each of the

cable height differences

stored in memory (Stored

Measurements). The unit

will automatically turn off

3 minutes after the last key

has been pressed.

All measurements are

displayed in the format

feet.inches followed by

fractions of an inch.

Hints & Guidelines

Position the unit on the ground, directly underneath the cable to

be measured. Align the unit in the direction of the cable, with the

cone pointing towards the cable, as shown.

When taking cable measurements, ensure that there are no

walls or buildings within a distance of 7 feet (2m) on either side

of the meter, as reflections from these will distort the readings.

Also ensure there are no trees or other overhanging objects in

the vicinity.

When measuring more than one cable, ensure that none of the

cables are outside the sonic beam, as shown in the Performance

section of this manual. f the cables are not vertically above one

another, this could be the case. n this instance, it will be necessary

to take a number of separate readings

from different positions.

Water and moisture can cause the

Cable Distance Meter to malfunction.

Therefore, the meter should not be

used in rain or snow. f water does

get into the cone, leave it upside

down in a dry, warm area.

f the display shows – – – . – – – , this

indicates a “poor target” and normally

happens when the cables are moving

due to wind, etc. Wait until the wind

dies down to get an accurate reading.

CAL BRATE MODE

The Calibrate mode switch allows the user to periodically check the unit to ensure that

it is still operating within specification. For cable distance measurement, this switch

should be in the CABLE position. When the switch is put to the WALL position, horizontal

measurements to large objects, e.g. walls, can be taken.

When the unit is first used, a horizontal reading to an object, e.g. wall, from a fixed position

should be taken. The reading should be entered, together with the date, into the table below.

Whenever the unit is to be checked for accuracy, a reading should be taken from the same

point, noting the result and date in the table. f the reading is outside of specification, the unit

should be returned to HD Electric for calibration.

Date

Reading

Front

View

Side View

TROUBLESHOOT NG

The following is a list of actions to be taken if the unit is not working properly:

SCREEN IS BLANK

Check to make sure the battery is inserted correctly. Open battery door on the bottom rear

of the unit. The battery is inserted with the terminals on the inside. The + and - symbols on

the battery should match the corresponding + and - symbols on the inside of the battery

compartment.

UNIT DOES NOT MEASURE ALL WIRES

Ensure that horizontal distances between wires are within the sonic beam, as shown in the

Performance section of this manual.

INCORRECT READINGS

Ensure the Calibrate mode switch is in correct position, i.e. CABLE for cable height meas-

urement, and WALL for horizontal distance to object measurement. Ensure no walls or

similar obstructions are within 7 feet (2m) of either side of the unit, as reflections from

these can interfere with correct operation.

SPEC F CAT ONS

Model CDM-50 Model CDM-75

1 inch (25mm) Cable Diameter 10’ - 50’ (3m – 15m) 10’ - 75’ (3m – 23m)

0.5 inch (12mm) Cable Diameter 10’ - 50’ (3m – 15m) 10’ - 50’ (3m – 15m)

0.25 inch (5.5mm) Cable Diameter 10’ - 40’ (3m – 12m) N/A

0.125 inch (2.5mm) Cable Diameter 10’ - 33’ (3m – 10m) N/A

No. of wires measured 66

Accuracy 0.5% ± 2 digits

Resolution (less than 33’) 0.25” (5mm)

Resolution (more than 33’) 0.5” (10mm)

Minimum gap between wires 6” (150mm)

Operating Temp. Range 14° F to 104° F (-10° C to 40° C)

Battery Life 50,000 measurements (Long Life Alkaline type)

Measurement units mperial (feet/inches) or metric (meters)

Auto power off delay 3 minutes

Dimensions 8.5” x 4” x 3” (205mm x 100mm x 70mm)

Weight 1.1 lb. (0.5kg)

1OO ft

Minimum

Cable

Diameter

50 ft

75ft

23m

4.5ft / 1.4m

3ft / 0.9m3ft / 0.9m

Beam Width

4.5ft / 1.4m

50ft

15m

75 ft

O ft

0.5 in

12mm

1 in

25mm

1OO ft

Minimum

Cable

Diameter

50 ft

50ft

15m

3ft

0.9m

Beam Width

3ft

0.9m

40ft

12m

33ft

10m

33ft

10m

33 ft

O ft

0.125 in

2.5mm

0.25 in

5.5mm

0.5 in

12mm

1 in

25mm

PERFORMANCE

CDM-50 Measurement versus Cable Diameter

CDM-75 Measurement versus Cable Diameter

LIMITED WARRANTY AND LIMITATION OF LIABILITY

This warranty applies to all products sold by HD Electric Company (the "Products"); provided, however, that the term Products does not include any

third party products purchased through HD Electric Company, for which no warranties are made (the "Third Party Products"). Third Party Products

may be subject to a separate manufacturer's warranty; [should you have any question regarding whether a separate warranty applies, please contact

HD Electric Company].

NOT CE: READ TH S L M TAT ON OF WARRANTY AND L AB L TY BEFORE BUY NG OR US NG THE PRODUCTS CONTA NED HERE N.

t is impossible to eliminate all risks associated with the use of the Products. Risks of serious injury or death, including risks associated with electrocution,

arcing and thermal burns, are inherent in work in and around energized electrical systems. Such risks arise from the wide variety of electrical systems

and equipment to which Products may be applied, the manner of use or application, weather and environmental conditions or other unknown factors,

all of which are beyond the control of HD Electric Company.

HD Electric Company does not agree to be an insurer of these risks, and shall have no liability for any claims arising from such risks.

WHEN YOU BUY OR USE THESE PRODUCTS, YOU AGREE TO ACCEPT THESE R SKS.

HD Electric Company warrants to the original purchaser that the Products (excluding any third party products purchased through HD Electric Company,

for which no warranties are made) will be free from defects in material and workmanship, under normal use and regular service, and preventative

maintenance for a period of one (1) year (ten (10) years for HDE Capacitor Controls) from the date of shipment (the “Warranty Period”). Should any failure

to conform with this warranty be found during the Warranty Period, you must notify HD Electric Company of your claim within thirty (30) days of discovery,

and within the Warranty Period. Your failure to give notice of claims of breach of warranty within the Warranty Period shall be deemed an absolute and

unconditional waiver of claims for such defects. HD Electric Company will have no responsibility to honor claims received after the date the applicable

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Upon notice of your claim, HD Electric Company will provide a return authorization number, and further instructions on how to return the product for

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receipt of a product which HD Electric Company determines is defective, HD Electric will, at its option, either (1) repair (or authorize the repair of) the

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changing technology environment, parts may become obsolete / unavailable over time (end of life). n the event that a Product cannot be repaired or

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tems not found defective will be returned at your expense, or failing receipt of instruction from you on return of such items within five (5) business days

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Company’s determination of defects is final. Products repaired or replaced during the Warranty Period shall be covered by the foregoing warranties for

the remainder of the original Warranty Period or ninety (90) days from the date of delivery of the repaired or replaced Products, whichever is longer.

LIMITATIONS:

This warranty is void in the event of misuse, alteration, faulty installation, or misapplication of the product.

This warranty does not cover failure of product or components due to any ACT OF NATURE; lightning, floods, hurricanes, tornadoes or any other such

catastrophic events.

HD Electric Company does not warrant any third party products or associated hardware or their performance or suitability for use and application. Such

items are provided “as-is”.

All repairs must be authorized by HD Electric Company. Unauthorized repairs will not be reimbursed under any circumstances.

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CUSTOMER-OWNED SYSTEMS, EQU PMENT OR SOFTWARE.

HD Electric Company must have prompt notice of any claim so that an immediate product inspection and investigation can be made. Buyer and all

users shall promptly notify HD Electric Company of any claims, whether based on contract, negligence, strict liability, or other tort or otherwise be barred

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