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Quick Start
1. For electrical testing, connect test leads to
"COM" and "+" jacks.
2. Rotate the dial to your desired measurement.
3. Connect to test points and read measurement.
4. For temperature testing, remove test leads,
slide TEMP switch to the right and connect
Type K thermocouple.
Certifications
UL 61010-1, Third Edition
EN61010-1
EN61010-2-032
EN61010-2-033
EMC EN61326-1
C-Tick (N22675)
WEEE
CATIII 600V, class II and pollution degree 2
indoor use comply with CE, RoHS compliant.
CATIII: Is for measurements performed in the
building installation.
Description
The SC600 series are the new loaded clamp
meters for the HVACR professional. Hang your
SC600 series clamp meter to any metallic surface
with the redesigned heavy-duty magnet and
conveniently store your test leads when the
job is done. See both voltage and amperage
readings at the same time on the big dual LCD
display, even in low light conditions using the
bright blue backlight (backlight SC640 only).
Easily see your amperage readings no matter
how you clamp around a wire with the swivel
head AAC clamp.
Take more accurate VAC and AAC readings on
variable frequency drives with True RMS sensing
technology (SC640 only). Measure the starting
amp draw of a compressor with Inrush current
feature (SC640 only). Use the clamp jaw light to
easily light up the test area. (SC640 only).
Take measurements with one hand using the
single test lead holder for added safety. Test
leads come with removable gold plated tips to
connect with Fieldpiece accessory heads.
The SC600 series clamp meters are built to
withstand the rigors of HVACR with high impact
plastic and a display you can read in very hot or
very cold environments.
Controls
Rotate dial to the function you want to use.
OFF
V
AC
V
AC
%
NCV
V
DC
µA
DC
MFD
H
Z
A
AC
50
H
Z
A
AC
400
°F
°C
H
Z
SC640
AUTO OFF
TYPE K
30V
MAX
Select
Range
Hold
INRUSH
COM
TRUE RMS
Press to cycle Amps AC and frequency
within VAC/AAC/Hz switch position.
OFF
V
AC
V
AC
%
NCV
V
DC
µA
DC
MFD
H
Z
A
AC
50
H
Z
A
AC
400
°F
°C
H
Z
SC640
AUTO OFF
TYPE K
30V
MAX
Select
Range
Hold
INRUSH
COM
TRUE RMS
Press to illuminate backlight (SC640).
OFF
V
AC
V
AC
%
NC
V
V
DC
µA
DC
MF
D
H
Z
A
AC
50
H
Z
A
AC
400
°F °C
H
Z
SC640
AUT
O OFF
TYPE
K
30V MA
X
Se
le
ct
Range
Hold
INRUSH
CO
M
TRUE RM
S
Press to activate inrush current
capture mode (SC640).
OFF
V
AC
V
AC
%
NCV
V
DC
µA
DC
MFD
H
Z
A
AC
50
H
Z
A
AC
400
°F
°C
H
Z
SC640
AUTO OFF
TYPE K
30V
MAX
Select
Range
Hold
INRUSH
COM
TRUE RMS
Press to manually select a range.
OFF
V
AC
V
AC
%
NCV
V
DC
µA
DC
MFD
H
Z
A
AC
50
H
Z
A
AC
400
°F
°C
H
Z
SC640
AUTO OFF
TYPE K
30V
MAX
Select
Range
Hold
INRUSH
COM
TRUE RMS
Press to freeze the display.
Fieldpiece
Loaded
Clamp
Meters
OPERATOR'S
MANUAL
Models SC640 SC620
Display
Battery Life (replace 9V if blinking)
O
F
F
MFD
NCV
V
AC
V
DC
A
AC
Hz
Hz
%
°C
°F
SC56
AUTO OFF
TRUE RMS
CAT III
600V
TEMP
K-TYPE
30V
MAX
SEL
HOLD
INRUSH
Auto Power Off Enabled
O
F
F
MFD
NCV
V
AC
V
DC
A
AC
Hz
Hz
%
°C
°F
SC56
AUTO OFF
TRUE RMS
CAT III
600V
TEMP
K-TYPE
30V
MAX
SEL
HOLD
INRUSH
High Voltage Warning (>30VAC/VDC)
O
F
F
MFD
NCV
V
AC
V
DC
A
AC
Hz
Hz
%
°C
°F
SC56
AUTO OFF
TRUE RMS
CAT III
600V
TEMP
K-TYPE
30V
MAX
SEL
HOLD
INRUSH
Manual Range (RNG) Mode
Data Hold Mode
O
F
F
MFD
NCV
V
AC
V
DC
A
AC
Hz
Hz
%
°C
°F
SC56
AUTO OFF
TRUE RMS
CAT III
600V
TEMP
K-TYPE
30V
MAX
SEL
HOLD
INRUSH
Inrush Amps Mode (SC640)
O
F
F
MFD
NCV
V
AC
V
DC
A
AC
Hz
Hz
%
°C
°F
SC56
AUTO OFF
TRUE RMS
CAT III
600V
TEMP
K-TYPE
30V
MAX
SEL
HOLD
INRUSH
Continuity Test
O
F
F
MFD
NCV
V
AC
V
DC
A
AC
Hz
Hz
%
°C
°F
SC56
AUTO OFF
TRUE RMS
CAT III
600V
TEMP
K-TYPE
30V
MAX
SEL
HOLD
INRUSH
Diode Test
O
F
F
MFD
NCV
V
AC
V
DC
A
AC
Hz
Hz
%
°C
°F
SC56
AUTO OFF
TRUE RMS
CAT III
600V
TEMP
K-TYPE
30V
MAX
SEL
HOLD
INRUSH
Frequency Test (hertz)
O
F
F
MFD
NCV
V
AC
V
DC
A
AC
Hz
Hz
%
°C
°F
SC56
AUTO OFF
TRUE RMS
CAT III
600V
TEMP
K-TYPE
30V
MAX
SEL
HOLD
INRUSH
Resistance Test (ohms)
O
F
F
MFD
NCV
V
AC
V
DC
A
AC
Hz
Hz
%
°C
°F
SC56
AUTO OFF
TRUE RMS
CAT III
600V
TEMP
K-TYPE
30V
MAX
SEL
HOLD
INRUSH
Capacitance Test (farads)
O
F
F
MFD
NCV
V
AC
V
DC
A
AC
Hz
Hz
%
°C
°F
SC56
AUTO OFF
TRUE RMS
CAT III
600V
TEMP
K-TYPE
30V
MAX
SEL
HOLD
INRUSH
Duty Cycle Test (percentage)
O
F
F
MFD
NCV
V
AC
V
DC
A
AC
Hz
Hz
%
°C
°F
SC56
AUTO OFF
TRUE RMS
CAT III
600V
TEMP
K-TYPE
30V
MAX
SEL
HOLD
INRUSH
Micro Unit (10
−6
, one millionth)
O
F
F
MFD
NCV
V
AC
V
DC
A
AC
Hz
Hz
%
°C
°F
SC56
AUTO OFF
TRUE RMS
CAT III
600V
TEMP
K-TYPE
30V
MAX
SEL
HOLD
INRUSH
Milli Unit (10
−3
, one thousandth)
O
F
F
MFD
NCV
V
AC
V
DC
A
AC
Hz
Hz
%
°C
°F
SC56
AUTO OFF
TRUE RMS
CAT III
600V
TEMP
K-TYPE
30V
MAX
SEL
HOLD
INRUSH
Kilo Unit (10
3
, one thousand)
O
F
F
MFD
NCV
V
AC
V
DC
A
AC
Hz
Hz
%
°C
°F
SC56
AUTO OFF
TRUE RMS
CAT III
600V
TEMP
K-TYPE
30V
MAX
SEL
HOLD
INRUSH
Mega Unit (10
6
, one million)
Safety Information
Never ground yourself when taking electrical
measurements. Do not touch exposed metal
pipes, outlets, fixtures, etc., which might be
at ground potential, while taking measure-
ments. Keep your body isolated from ground
by using dry clothing, rubber shoes, rubber
mats, or any approved insulating material.
Disconnect the test leads before opening the
case. Inspect the test leads for damage to the
insulation or exposed wire. Replace if suspect.
Keep your fingers behind the finger guards
on the probes while taking measurements.
When disconnecting from a circuit, disconnect
the “RED” lead first, then the common “BLACK”
lead. Use one handed testing when possible.
Work with others.
Turn off power to the circuit under test before
cutting, unsoldering, or breaking the circuit.
Do not measure resistance (ohms) when circuit
is powered. Isolate load by disconnecting
from circuit.
Disconnect the meter from circuit before turning
any inductor off, including motors, transform-
ers, and solenoids. High voltage transients
can damage the meter beyond repair.
Do not use during electrical storms.
Do not apply more than rated voltages between
input and ground.
Isolate capacitors from system and discharge
them safely before testing.
Temperature switch prevents leaving thermo-
couple plugged in while measuring voltage.
When measuring high frequency AC current, do
not exceed the rated 400AAC of the clamp.
Failure to adhere may cause the clamp to heat
up dangerously.
All voltage tests:
All voltage ranges will
withstand up to 600V. Do not apply more than
600VDC or AC rms.
Symbols used:
Caution, risk of electric shock
Caution, refer to manual.
Ground
Double insulation
Specifications
Display:
5000 count dual display
Backlight:
60 second duration with auto-off. Blue color. SC640 only.
Overrange:
(OL) or (-OL) is displayed
Measurement rate:
3.3 times per second, nominal
Zero:
Automatic
Operating environment:
32°F to 122°F (0°C to 50°C) at <70%
relative humidity
Storage temperature:
-4°F to 140°F (-20°C to 60°C), 0 to 80% RH
(with battery removed)
Accuracy:
Stated accuracy @ 73°F±9°F (23°C±5°C), <75%RH
Temperature coefficient:
0.1 x (specified accuracy) per °C [0°C to
19°C (32°F to 66°F), 28°C to 50° C (82°F to 122°F)]
APO (Auto Power Off):
Approx. 30 minutes
Power:
Single standard 9-volt battery, NEDA 1604, JIS 006P, IEC 6F22
Battery life:
200 hours typical alkaline (SC620); 100 hours typical
alkaline (SC640)
Low battery indication:
Battery icon blinks and "LO.bt" is displayed
when the battery voltage drops below the operating level
Dimensions:
287.5mm(H) x 79.5mm(W) x 50.0mm(D)
Weight:
Approx. 450g including battery
Altitude:
Up to 6562 ft (2000m)
Overload protection:
600 VDC or 600VAC rms unless otherwise
stated
Test leads:
Use UL listed test leads that comply to UL61010-031
rated CATIII 600V or above. Included test leads are gold-plated
and have removeable safety caps.
Please operate the instrument following all instructions
of the operator's manual to avoid impairing the safety
of the product.
Functions
Temperature (°F/°C)
Plug any Type K thermocouple directly into the meter to measure
temperature. Cold junction is located inside the meter and allows for
extremely accurate measurements even in rapidly changing ambient
temperatures (going from rooftop to freezer). No adapter is required.
Range:
-30°F to 932°F, (-35°C to 500°C)
Resolution:
0.1°
Accuracy:
±(1°F)* 32°F to 120°F, ±(1°C) 0°C to 49°C
±(1%+2°F) 32°F to 572°F, ±(1%+1°C) 0°C to 300°C
±(2%+6°F) -30°F to 32°F, ±(2%+3°C) -35°C to 0°C
±(2%+6°F) 572°F to 932°F, ±(2%+3°C) 300°C to 500°C
Sensor type:
Type K thermocouple *After field calibration
Overload protection:
30 VDC or 30VAC rms
Non Contact Voltage (NCV)
Use NCV to check 24VAC from a thermostat or live voltage up to
600VAC. Always test a known live source before using. A segment graph
and RED LED will display the presence of voltage. Audible beep increases
from intermittent to continuous as intensity of field (EF) increases.
AC Voltage Detection Range:
24VAC to 600VAC (50-60Hz)
Voltage AC (VAC) (50Hz-500Hz)
Test power lines (120, 220, 480), test 24V going to controls, and
test for transformer failure.
Ranges:
500mV, 5V, 50V, 500V, 600V
Resolution:
0.1mV
Accuracy:
±(1.2% + 8) 500mV range (50-60Hz)
±(1.2%+8), 5V, 50V, 500V; ±(1.5% + 8) 600V range
True RMS:
model SC640 only
Crest factor:
≤ 3
Audio/Visual Hi-V indicator:
>30VAC/VDC
Input impedance:
>100MΩ (500mV), 10MΩ (5V),
9.1MΩ (50V-600V)
!
OFF
V
AC
V
AC
%
NCV
V
DC
µA
DC
MFD
H
Z
A
AC
50
H
Z
A
AC
400
°F
°C
H
Z
SC640
AUTO OFF
TYPE K
30V
MAX
Selec
t
Range
Hold
INRUSH
COM
TRUE RMS
OFF
V
AC
V
AC
%
NCV
V
DC
µA
DC
MFD
H
Z
A
AC
50
H
Z
A
AC
400
°F
°C
H
Z
OFF
V
AC
V
AC
%
NCV
V
DC
µA
DC
MFD
H
Z
A
AC
50
H
Z
A
AC
400
°F
°C
H
Z
OF
F
VA
C
VA
C
%
NC
V
V
DC
µA
DC
M
FD
H
Z
A
AC
50
H
Z
A
AC
40
0
°F
°C
H
Z
SC640
AUT
O OFF
K-
TY
PE
30
V
MA
X
Se
le
ct
Ra
ng
e
Ho
ld
IN
RU
SH
CO
M
TR
UE
R
MS
OFF
V
AC
V
AC
%
NCV
V
DC
µA
DC
MFD
H
Z
A
AC
50
H
Z
A
AC
400
°F
°C
H
Z
AUTO OFF
TYPE K
30V
MAX
COM
Unplug Leads and Slide
TEMP Switch to the Right
!
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°C. (Use
only Type K thermocouples)
DO NOT APPLY VOLTAGE TO THE JACKS when the rotary dial is on
microamps. Even low voltages can cause a current overload and
potentially harm the meter.
99 Washington
Street
Melrose,
MA 02176
