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MicroAmps DC (μADC)

Microamps for fl ame rectifi er diode test on a heater control.   

Connect leads between fl ame sensor probe and control module and 
turn heating unit on to read μA measurement. When the fl ame is on, 
there should be a measurable μADC signal, typically under 10μADC. 
Compare measurement to manufacture’s specifi cation to determine 
if replacement is necessary. 

Ranges:

  500μA  

Resolution:

  0.1μA 

Accuracy:

  ±(1.0% + 2)  

Voltage burden:

  1V

Overload Protection:

  600VDC or 600VAC rms

Frequency (Hz) through Leads

Check Variable Frequency Drives. Check incoming voltages to 

ensure they are cycling at 60Hz or desired frequency.  

Ranges:

  500Hz, 5kHz, 50kHz, 500kHz, 1MHz  

Resolution:

  0.1Hz

Accuracy:

  ±(0.1% + 5)  

Sensitivity: 

10Hz to 1MHz: >3.5Vrms

Duty Cycle (%)

Duty cycle shows the % of the AC waveform which has postitive 

amplitude.  

Ranges:

 5%-95% (40Hz to 20kHz)  

PW: 

>10μs

Resolution:

  0.1% 

 Accuracy (5V logic):

 ±(2% + 10)

Capacitance (MFD)

Set to MFD to test motor start and run capacitors.  Capacitors 

are one of the most failure prone components in a HVAC/R system. 
Discharge capacitor and disconnect from power and resistors 
between terminals before testing.  If dIS.C is displayed, discharge the 
capacitor. 

Ranges:

  5μF, 50μF, 500μF, 5mF  

Resolution:

  1nF

Accuracy:

  ±(3% + 15) 5μF, ±(3% + 5) 50μF to 500μF, 

±(5% + 20) 5mF 

Overload Protection:

  600VDC or 600VAC rms

O

F

F

MFD

NCV

V

AC

V

DC

A

AC

Hz

Hz

%

°C

°F

O

F

F

MFD

NCV

V

AC

V

DC

A

AC

Hz

Hz

%

°C

°F

O

F

F

MFD

NCV

V

AC

V

DC

A

AC

Hz

Hz

%

°C

°F

Discharge Cap First!

Voltage DC (VDC)

Select VDC and the range will automatically be selected to give 

the best resolution.

 

Ranges:

  500mV, 5V, 50V, 500V, 600V  

Resolution:

  0.1mV  

Accuracy:

  ±(0.5% + 2)

Input impedance:

  >100MΩ (500mV), 10MΩ (5V), 

9.1MΩ (50V-600V)

Resistance (Ω)

Used for “ohming out” a motor.  0.1Ω resolution is necessary to 

test the resistance between the motor poles because the values are 
typically very low.   

Ranges:

  500Ω, 5kΩ, 50kΩ, 500kΩ, 5MΩ, 50MΩ    

Resolution:

 0.1Ω 

Overload Protection:

  600VDC/VAC rms

Accuracy:

  ±(1.0% + 5) 500Ω to 500kΩ,  ±(1.5% + 5) 5MΩ, ±(3.0% 

+ 5) 50MΩ

Continuity  (

O

F

F

)

Use the continuity feature to test if a circuit is open or closed.  

Use this feature to check fuses as well.  A steady “beep” and green 
LED indicate the circuit is good. Turn dial to Ω position and press SEL 
button once.

Range:

 500Ω  

Resolution:

 0.1Ω  

Response time:

 100ms

Audible beep:

 <30Ω 

Overload Protection:

 600VDC/VACrms

Diode Test  (

O

F

F

)

Test diodes for proper forward and reversed-biased functions. 

Turn dial to Ω position and press SEL button twice.

Test current: 

0.8mA (Approx.)

 

Accuracy: 

±(1.5% + 5) 

Overload Protection:

 600VDC/VACrms

O

F

F

MFD

NCV

V

AC

V

DC

A

AC

Hz

Hz

%

°C

°F

O

F

F

MFD

NCV

V

AC

V

DC

A

AC

Hz

Hz

%

°C

°F

O

F

F

MFD

NCV

V

AC

V

DC

A

AC

Hz

Hz

%

°C

°F

Amps AC (AAC)

Test any isolated power line.  Press SEL on VAC/AAC/Hz position. 

AAC will display in the upper display. True RMS on model SC56 only.

Ranges:

  50A, 400A  

Resolution:

  0.01A 

Crest factor:

  ≤ 3

Accuracy:

  ±(2.0% + 10) 50-60Hz  

Jaw Opening: 

1.2in  

(

30 mm) 

Frequency (Hz) through Clamp

Measure frequency without using test leads, just use the clamp. 

Turn dial to VAC/AAC/Hz and press SEL twice. Clamp Hz upper display.

Range:

  10Hz to 400Hz  

Accuracy:

  ±(0.1% + 5)

Minimum current range: 

 > 5AAC

 Overload Protection: 

400AAC

Resolution:

  0.1Hz

O

F

F

MFD

NCV

V

AC

V

DC

A

AC

Hz

Hz

%

°C

°F

SEL

RNG

Inrush Current (SC56 only)

Inrush feature captures current at start of fi rst 100ms period 
of a motor start. This can help diagnose a motor before it fails. 
To activate Inrush, turn dial to 

VAC/AAC/Hz position

, press SEL to 

show AAC on top display, then press the INRUSH button on the 
side of the meter once for 50AAC range and twice for 400AAC.

Inrush measurement period:

  100-milliseconds

Minimum input:

 >2A on 50A range; >20A on 400A range

Modular 
Expandability

Your new Swivel Clamp Meter is compatible 

with all Fieldpiece Accessory Heads. With 
Fieldpiece Accessory Heads,  you can measure 
any available parameter, and read the 
measurement on your new meter's display in 
real-time. 

Just set the range to VDC and press the 

RANGE button until mV is displayed.  Remove 
the probe tips of your test leads, and connect 
your accessory head (model AAV3 shown). 

O

F

F

MFD

NCV

V

AC

V

DC

A

AC

Hz

Hz

%

°C

°F

SEL

RNG

Air Velocity

& Temperature

Head

English

READ

LO BATT

ON

LCD X

100

Average

(16 sec)

Metric

Real

time

AAV3

AUTO-

OFF

English

Metric

Ft/min

M/s

KM/hr

MPH

ºF

ºC

OFF

Visit www.fi eldpiece.com to see all of the 

different accessory heads that Fieldpiece 
off ers. 

Temp. Calibration

For accuracies of ±1°F, 

calibrate to a known 
temperature.  A glass 
of stabilized ice water 
is very close to 32°F 
(0°C) and is usually very 
convenient but any 
known temperature can 
be used.  

1.  Select the 400°F range.
2.   Plug thermocouple to be 

calibrated into the K-type jack.

3.  Unscrew A and B and remove 

the battery cover.

4.  Stabilize a large cup of ice 

water. Stir the ice with the 
water until temperature stays 
at 32°F (0°C)

5.  Immerse the thermocouple 

probe and let it stabilize. Keep 
stirring to prevent micro-
environments.

6.  Use a small screwdriver to 

adjust calibration pot C to the 
right of the battery as close to 
32°F as you would like. 

Safety Features

1. Bright LED and beeper warn you when testing 

voltages above 30V.

2.  Switch to the NCV function (non contact volt-

age) and point clamp claw towards suspected 
voltage source. Monitor the bright LED and 
beeper to see if the source is “hot.”

3. Rotate the clamp to the angle that best suits 

the situation.

4.   Temp switch to prevent leaving thermocouple 

plugged in while measuring voltage.

5. LED fl ashlight automatically shines when 

clamp jaw is opened (model SC56 only).

Battery Replacement

The battery must be replaced when the 

battery icon is empty and blinking. The icon 
will blink for 30 seconds, then the meter will 
display LO.bt and further measurement will not 
be allowed until battery is replaced.  Disconnect 
and unplug leads, turn meter off  and remove 
battery cover.  Replace the battery with a 
standard NEDA type 1604 9V battery.  

Maintenance

Clean the exterior with a dry cloth.  Do not 

use liquid.

Limited Warranty

This meter is warranted against defects in 

material or workmanship for one year from 
date of purchase. Fieldpiece will replace or 
repair the defective unit, at its option, subject 
to verifi cation 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 
fi tness 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

Call Fieldpiece Instruments for one-price-fi x-

all out-of-warranty service pricing. Send check 
or money order for the amount quoted. Send the 
meter freight prepaid to Fieldpiece Instruments. 
Send proof of date and location of purchase for 
in-warranty service. The meter will be repaired 
or replaced, at the option of Fieldpiece, and 
returned via least cost transportation.

A

C

 

99 Washington Street 
Melrose, MA 02176 

Phone

 781-665-

1400

Toll Free 1-800-517-8431

 

Visit us at www.T

estEquipmentDepot.com

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