Fieldpiece SC66 - Basic Manual Ranging Clamp Meter Manuel d'utilisateur télécharger pdf

DIGITAL CLAMP

METERS SC66 SC67

OPERATOR’S MANUAL

General description

Models SC66 and SC67 have

special features for the HVAC/R

service technician who wants to carry

one instrument.

Maintenance

Clean the exterior with clean dry

cloth. Do not use liquid.

Battery Replacement: When the

multimeter displays “ “ the battery

must be replaced. Disconnect and

unplug leads, turn meter off, and remove

the battery cover. Replace the battery

with a NEDA type 1604 9V battery.

Non-contact voltage

(NCV)

With the NCV tab on the tip of the

clamp close to an AC voltage, press

the NCV button, the NCV LED will

light and the beeper will beep. The

closer you get to AC voltage, the

louder the beep. The NCV function is

sensitive enough to detect 24VAC on

thermostats.

Microamps DC

For measuring the ame diode

current in a heater control.

The clamp meter is protected by

a PTC resistor, not a fuse. When an

overload occurs on µADC, reset the

PTC by disconnecting from the circuit

for at least 30 seconds.

Capacitance

For motor-start and motor-run

capacitors. Disconnect the capacitor

from power rst. Short the terminals

to discharge the capacitors.

Disconnect any resistors that might

be between the terminals of the

capacitor.

Auto power off

To extend the life of your battery,

the meter automatically turns off after

approximately 60 minutes.

Hi voltage indicator

In any VAC/VDC range when you

touch a voltage greater than 30V, the

beeper will beep and the red Hi-V LED

will blink. BE CAREFUL!

MAX hold for safety

Before measuring voltage, press

MAX button and keep your eyes on

your test point. Then when you’ve

disconnected, read the display.

Current measurements

The xed jaw is longer than the

moveable jaw to make it easier to select

just one wire from a bundle. With the

jaws closed, separate one wire using

the long xed jaw. Slide it to the corner

where the two jaws meet. Then open the

jaws to let it in. You can select the wire

without having to hold the jaws open.

Temperature

Plug any K-type thermocouple

directly into the meter to measure

temperature. Temperature measurement

will be accurate even in fast changing

environments because of excellent

temperature compensation. One

thermocouple is included. No adapter is

required.

Display

C or

Remove back of meter and locate

jumper on lower right corner of PCB

(marked

C). Place a jumper over the

pins to display

Field

F calibration

For accuracies of ±1°F calibrate the

meter to a known temperature. A glass

of stabilized ice water is very close to

32°F and is usually very convenient.

1. Connect thermocouple.

2. Select the 200°F range.

3. Remove back case. Hold the battery

in place with a rubber band.

4. Stabilize a large cup of ice water.

5. Immerse the thermocouple probe and

let it stabilize.

6. Adjust VR3 (lower right corner of

PCB) to get close to 32°F then adjust

VR4(above VR3) to get within 0.1°F

of 32°F.

7. To calibrate in

C, close the jumper

that is below VR3.

For your safety...

General: Disconnect the test leads

before opening the case. Inspect the

test leads for damage to the insulation

or exposed metal. Replace if suspect.

Never ground yourself when taking

electrical measurements. Do not touch

exposed metal pipes, outlets, xtures,

etc., which might be at ground potential.

Keep your body isolated from ground

by using dry clothing, rubber shoes,

rubber mats, or any approved insulating

material. When disconnecting from

a circuit, disconnect the “RED” lead

rst, then the common lead. Work with

others. Use one hand for testing. Turn

off power to the circuit under test before

cutting, unsoldering, or breaking the

circuit. Keep your ngers behind the

nger guards on the probes. Do not

measure resistance when circuit is

powered. Do not apply more than rated

voltage between input and ground.

All Voltage Tests: All voltage ranges

will withstand up to 600VDC or 600VAC.

Do not apply more than 600VDC or

600VAC.

AC Tests: Disconnect the meter from

the circuit before turning any inductor

off, including motors, transformers, and

solenoids. High voltage transients can

damage the meter beyond repair. Do not

use during electrical storms.

Symbols used:

Caution, risk of electric shock

Caution, refer to manual.

Ground

Double insulation

Using & storing test leads

Because the wire insulation is

silicone, you can use your test leads

in very cold weather and they will stay

exible. They will also take a bump of

a soldering iron without melting.

Snap the probes into the back to

keep them out of the way.

Use the single test probe holder

on clamp to make voltage testing

easy.

For convenient lead storage, wrap

the leads as shown.

WARNINGS

DISCONNECT AND UNPLUG

TEST LEADS before opening case.

TEST NCV FUNCTION ON

KNOWN LIVE WIRE before using.

DO NOT APPLY VOLTAGE

greater than 30VAC or 60VDC to the

thermocouple or the jacks when the

rotary dial is on

REMOVE THE THERMOCOUPLE

when taking voltage measurements.

DISCONNECT THE TEST LEADS

when taking temperature measure-

ments.

DO NOT APPLY VOLTAGE TO

THE JACKS when the rotary dial is

on microamps. Even low voltages

can cause a current overload and

blow the fuse. Replace blown fuse to

regain function.

VR3

Jumper

VR4

1 2

Résumé du contenu

Page 1 - General description

DIGITAL CLAMP METERS SC66 SC67OPERATOR’S MANUALGeneral descriptionModels SC66 and SC67 have special features for the HVAC/R service technician who

Page 2 - Obtaining service

Selecting rangesFor DC voltage, set the meter to the VDC parameter instead of VAC as shown above. For all ranges and functions choose a range just abo

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Fieldpiece SC66 - Basic Manual Ranging Clamp Meter Manuel d'utilisateur

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