Fieldpiece SC77 User Manual

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.

Symbols used:

Caution, risk of electric shock

Caution, refer to manual.

Ground

Double insulation

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, fixtures,
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 first, 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 fin­gers behind the finger 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: For model SC77

all voltage ranges will withstand up to
600VDC or 600VAC rms. Do not apply
more than 600VDC or 600VAC rms.

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.

Limited warranty

This meter is warranted against
defects in material or workmanship for
one years from date of purchase.
Fieldpiece will replace or repair the
defective unit, at its option, subject to
verification of the defect.

This warranty does not apply to
defects resulting from abuse, neglect,
accident, unauthorized repair, alter­ation, or unreasonable use of the
instrument.

Any implied warranties arising from
the sale of a Fieldpiece product,
including but not limited to implied war­ranties of merchantability and fitness
for a particular purpose, are limited to
the above. Fieldpiece shall not be
liable for loss of use of the instrument
or other incidental or consequential
damages, expenses, or economic loss,
or for any claim of such damage,
expenses, or economic loss.

State laws vary. The above limita­tions or exclusions may not apply to
you.

Obtaining service

Return any defective SC77 to
Fieldpiece for service. For warranty
service, please provide a proof of pur­chase. Contact Fieldpiece for out of
warranty repair charges. Contact infor­mation can be found at our website
www.fieldpiece.com.

OPERATOR’S MANUAL

400

DISCONNECT
TESTLEADS

340

SC77

µ

Auto

4000m

400m

HOLD

NCV

m A K M Ω

m V V

APO HOLD n m m F
AC
DC

Works with
Fieldpiece
accessory
heads!

AUTO RANGING T-RMS
DIGITAL CLAMP METER

Model SC77

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
°F.

REMOVE

THE THERMOCOUPLE

when taking voltage measurements.

DISCONNECT

THE TEST LEADS
when taking temperature measure­ments.

DO NOT APPLY VOLTAGE TO THE
JACKS when the rotary dial is on
microamps. Even low voltages can cause
a current overload and potentially dam­age the circuit.

!

!

Works with Fieldpiece
accessory heads

Connect your Fieldpiece accessory
head to SC series meter through
included deluxe silicone leads. Use
400mVDC or 4000mVDC range for
most heads.

SC77 connected to

ARH4 through leads.

Available Fieldpiece
accessory heads

There is a Fieldpiece accessory
head available for just about any job.
There are heads to measure tempera­ture, superheat, subcooling, RH%, wet
bulb, dew point, vacuum (microns of
mercury), manometer (inches of water
column), amps AC&DC, high voltage,

CO, CO2, air velocity, and many more.

Non-contact voltage

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
NCV function is sensitive enough to
detect 24VAC on thermostats.

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!

Current measurements

The fixed 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 fixed 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.

Microamps

For measuring the flame diode cur­rent in a heater control.

Capacitance

For motor-start and motor-run
capacitors. Disconnect the capacitor
from power first. Short the terminals to
discharge the capacitors. Disconnect
any resistors that might be between
the terminals of the capacitor. The
SC77 displays a “dsc” symbol when
capacitor needs discharging.

Temperature

Plug any K-type thermocouple
directly into the meter to measure tem­perature. Temperature measurement
will maintain good accuracy in fast
changing environments. One thermo­couple is included. No adapter is
required.

Field Temp. calibration

For accuracies of ±1° calibrate the
SC77 to a known temperature. A glass
of stabilized ice water is very close to
32°F (0°C) and is usually very conven­ient.

1. Select the °F range on the SC77.

2. Remove back case. Hold the bat-

tery in place with a rubber band.

3. Stabilize a large cup of ice water by

stirring.

4. Immerse the probe and let it stabi-

lize. Continue stirring.

5. Adjust VR3 (lower right corner of

PCB) to get close to 32°F (0°C)
then adjust VR4 (below VR3) to get
within 0.1°F/C of 32°F (0°C).

6. To calibrate in °C, close the jumper

that is to the left of VR3.

Display ºC or ºF

Remove back of meter, locate
jumper on lower right corner of PCB
(just below VR3) and close jumper to
read temperature in °C.

Using &storing test leads

Because the wire insulation is sili­cone they will stay flexible in cold
weather and will not melt if bumped by
a soldering iron.

Use the single test probe holder on
clamp to make voltage testing easy.

For convenient lead storage, wrap
the leads as shown.

!

SC77

APO HOLD n m m F
AC
DC

m A K M Ω

m V V

NCV

HOLD

Auto
4000m

µ

400m

400

F

C

C

400

F

1000

TEMP

DISCONNECT
TESTLEADS

SPECIFICATIONS

Display: LCD with a maximum read-

ing of 4000.

Data Hold: Operating on all ranges
Range(RNG): Operating on all autor-

anges

Overrange: "OL" mark indication.
Auto power off: Approx. 10 minutes.
Measurement rate: 2 times per sec-

ond, nominal.

Operating environment: 32 to 122°F

(0 to 50°C) at <70% R.H.

Storage temperature: -4 to 140°F

(-20 to 60°C), 0 to 80% R.H. with
battery removed.

Accuracy: Specifications good in

ambient conditions of 73°F ±9°F
(23°C ±5°) , <75% relative humidity.

Temperature Coefficient: 0.1 ×

(specified accuracy) per °F/°C; 32
to 66°F (0 to 19°C); 82 to 122°F
(28 to 50°C).

Altitude: 6561.7 Feet (2000 meters).
Jaw opening capability: 38mm con-

ductor.

Power: Single standard 9-volt battery,

NEDA 1604, JIS 006P, IEC 6F22.

Battery life: 100 hours carbon zinc

200 hours typical with alkaline.

Accessories: One pair test leads,

one pair of small alligator clips, k­type thermocouple, 9V battery
(installed), and operating instruc­tions.

Safety: Designed to meet

IEC/EN61010-1 and IEC/EN61010­2-032, CATIII 600V, class II and
pollution degree 2, indoor use

comply with CE. C-Tick.

DC volts

Ranges: 400mV, 4000mV, 40V, 400V,

600V

Resolution: 0.1mV
Accuracy: ±(0.5% rdg + 2 dgt)
Input impedance: 3MΩ on V inputs,

10MΩ on mV input

Overload protection: 600VDC or AC

rms

Transient protection: 6kV for 10μ

sec

AC volts TrueRMS (50-500Hz)

Ranges: 4V, 40V, 400V, 600V
Resolution: 1mV
Accuracy: ±(2.0% rdg + 8 dgts) 50 ~

500Hz

Input impedance: 3MΩ
Overload protection: 600V DC or AC

rms

Transient protection: 6kV for 10μ

sec

AC current TrueRMS (50-60Hz)

Ranges: 40A, 300A
Resolution: 0.01A
DC Accuracy:

±(3.0% rdg + 10 dgts) 0 ~ 300A /
50 ~ 60Hz

Overload protection: 300AAC

DC current

Ranges: 400μA
Resolution: 0.1μA
Accuracy: ±(1.0% rdg + 2 dgt)
Voltage burden: 1V
Overload protection: 500V DC or AC

rms

Resistance

Ranges: 400Ω, 4kΩ, 40kΩ, 400kΩ,

4MΩ, 40MΩ

Resolution: 0.1Ω
Accuracy:

±(1.2% rdg + 4 dgts) on 400Ω to
400kΩ ranges
±(1.5% rdg + 4 dgts) on 4MΩ range
±(3.0% rdg + 5 dgts) on 40MΩ
range

Open circuit volts: -0.45VDC typical,

(-1.2VDC on 400Ω range)

Overload protection: 500VDC or AC

rms

Temperature

Range: -30 to 1000°F (-34 to 538°C)
Resolution: 0.1°
Accuracy:

±1°F, 32 to 120°F (0 to 49°C)
±1%+1.5°F, -4 to 750°F (-20 to 399°C)
±2%+4°F, -30 to -4°F (-34 to -20°C)
±2%+4°F, 750 to 1000°F(399 to

538°C)

Sensor type: K-type thermocouple
Overload protection: 60 VDC or 30

VAC rms

Continuity

Range: 400Ω
Resolution: 1Ω
Audible indication: Less than 25Ω
Response time: 500ms
Overload Protection: 500VDC or AC

rms

Green LED will be on continuously.

Capacitance

Range: 4μF, 4 0 μF, 400μF, 4mF
1mF = 1000μF
i.e: 1.425mF = 1425μF

Resolution: 1nF
Accuracy: ±(3% rdg + 10 dgts) on

4μF range

±(3% rdg + 5 dgts) on 40μF to

400μF ranges

±(5% rdg + 20 dgts) on 4mF range
Input protection: 500VDC or AC rms

Hi-V(voltage) warning

>30VAC/DC meter beeps, red LED
blinks.

Non-contact voltage

Senses voltage 24V to 600V AC
(50Hz to 60Hz) beeper chirps and big
bright red LED comes on, works when
meter dial is on any range.

Voltage

Resistance

DC Current<4000μADC

Temperature

AC Current

Selecting ranges

For DC voltage, set the meter to the
VDC parameter instead of VAC as
shown above.

For all ranges and functions choose
a range just above the value you
expect. If display reads "OL" (over­load), select a higher range. If display
shows less than three numbers, select
a lower range for better resolution.

CE

This instrument complies with the
requirements of the following
European Community Directives:
89/336/EEC (Electromagnetic
Compatibility) and 73/23/EEC (Low
Voltage) as amended by 93/68/EEC
(CE Marking).

Capacitance

True RMS

Digital multimeters use two different
types of AC sensing. The most com­mon is average sensing, normalized to
a true RMS value of a sine wave. The
other is true RMS sensing. The actual
true RMS value is sensed for a wave
form within the limits of the crest factor.
Either sensing method will give the
same results on a clean sine wave but
they may differ on a non-sinusoidal
waveform.

400

1000

µ

Auto

4000m

400m

F

C

TEMP

400

F

C

Insure the
temperature
being meas­ured is stable.
Maintain good
contact
between the
thermocouple
and what's
being meas­ured.

400

1000

µ

Auto

4000m

400m

F

C

TEMP

400

F

C

Disconnect test leads from

voltage before plugging

thermocouple in.

Will display “dsc” if
capacitor needs
discharge.

v16

µ

400

F

C

400

1000

TEMP

Auto

400

F

C

TEMP

1000

4000m

400m

C

400

F

µ

F

400

C

TEMP

Auto

400m

C

400

F

1000

µ

Auto

4000m

400m

C

F

4000m

Auto

400

F

C

400

1000

TEMP

4000m

400m

C

F

µ