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Fieldpiece SC46
True RMS Mini Clamp Meter
See: SC260

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Fieldpiece SC46 Shown
Product Information
Datasheet 261 KB PDF Datasheet
Manual 645 KB PDF Datasheet
PDF HelpPDF Help
  • Non-contact Voltage
  • Backlight
  • AC Volts
  • DC Volts
  • Resistance (Ohms)
  • Continuity
  • Temperature
  • Capacitance
  • Autoranging
  • Rugged ABS case
  • Ergonomic shape fits naturally in your hand
  • Auto power-off (APO) to conserve battery life
  • Under 8" tall

The Fieldpiece SC46 True RMS Mini Clamp Meter with Temperature and Backlight packs the biggest punch in the SC40 series. With features that rival many full-sized clamp-on meters, this auto ranging DMM packs a ton of functions into a compact, easy to handle shape. The Fieldpiece SC-46 includes temperature and capacitance as well as a bright green backlight and True RMS for more accurate readings on non-sinusoidal AC waveforms. Fieldpiece SC 46 also packs in most of the other HVAC/R ranges you use everyday. Some technicians use the SC46 as their everyday DMM, others as back-up or second meter to get more testing done in less time. This mini-clamp was deigned to make the user's job easier, safer, and faster no matter where you choose to rank it in your bag.

The Fieldpiece SC46 has features and benefits that rival many full-size clamp-on multimeters plus easy to use built-in safety features they don’t include. The built-in non-contact voltage sensor (NCV) sensor tells the user if a line is hot or not before you work on it. The continuity beeper tells you if a circuit is open or closed. The hold button on the side of the Fieldpiece SC 46 allows you to concentrate on the test point, hold the reading and then look at the display after you’ve disconnected.


Features and Benefits

The Fieldpiece SC46 True RMS Mini Clamp Meter is a mini workhorse and the features and ranges included surpass those found on some full-size clamp meters.

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.

Take ambient air or refrigeration line temperatures and more with the built-in K-type port and the included ATB1 wrap tab thermocouple. Add a wet sock, saturated tissue, or a shoelace to take wet bulb temperatures. The built-in temperature junction offers great temperature compensation for more accurate and faster measurements.

Using the attached amp clamp of the Fieldpiece SC46, read 0-400 amps directly on your meter with 0.1 resolution.

Capacitance (MFD)
Measure microfarads on motor-start and motor-run capacitors to check for degradation. Don’t forget to discharge the capacitor before testing.

Wire Grabbing Jaw
The amp clamp is shaped like a jaw to make grabbing a single wire easy using only one hand.

Non-contact Voltage
With the NCV tab on the tip of the clamp close to an AC voltage, press and hold the NCV button pn the Fieldpiece SC46. The NCV LED will light with an analog feel and the beeper will beep. The closer the user gets to AC voltage, the louder the beep will be on the Fieldpiece SC 45. The NCV function is sensitive enough to detect 24VAC on thermostats (24V to 600V, 50Hz to 60Hz).

The HOLD button is easily pressed with the thumb while holding the mini clamp meter naturally in the user's hand. The Fieldpiece SC-46 holds any reading so the user can concentrate on the test points and look at the LCD after being disconnected.

Fieldpiece SC46 Dial Settings/Ranges

The Fieldpiece SC 46 True RMS Mini Clamp Meter's dial is very easy to read and operate with one with one hand. Simply select the range you’re testing and get the job done. Be sure to refer to the Operator’s Manual for safety information and warnings and use safe testing practices when hooking up your multimeter to any A/C or heating system.

Selecting Ranges
For DC voltage, set the Fieldpiece SC44 Mini Clamp Meter for HVAC/R to the VDC parameter instead of VAC. For all ranges, the user will 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.

AC Volts (50Hz - 500Hz)
Ranges: 4V, 40V, 400V, 600V
Resolution: 1mV
Accuracy: ±(1.2% rdg + 5 dgts), ±(1.5% rdg + 5 dgts) on 600V range
Input impedance: 4V = 10MΩ
40V~600V = 9.1MΩ
DC Volts
Ranges: 400mV, 4V, 40V, 400V, 600V
Resolution: 0.1mV
Accuracy: ±(0.5% rdg + 2 dgt)
Input impedance: 400mV > 100MΩ
4V = 10MΩ
40V~600V = 9.1MΩ
Transient protection: 6kV for 10μ sec
AC Current (50Hz - 60Hz)
Ranges: 40A, 400A
Resolution: 0.01A
Accuracy: ±(2.0% rdg + 6 dgts)
Audible indication: Less than 25Ω
Response time: 500ms
Ranges: 4μF, 40μF, 400μF, 4mF 4.000mF = 4000μF
Resolution: 1.0nF
Accuracy: ±(3% rdg + 10 dgts) on 4μF
±(3% rdg + 5 dgts) on 40μF to 400μF
±(5% rdg + 20 dgts) on 4mF (4000μF)
Minimum input range: >100nF
Minimum input range: "dsc" symbol on LCD indicates that the capacitor must be discharged before testing.
Ranges: 400Ω
Accuracy: ±(1.0% rdg + 4 dgts)
Open circuit volts: -1.2VDC
Overload Protection
Resistance: 500VDC or AC RMS
Continuity: 500VDC or AC RMS
Capacitance: 500VDC or AC RMS
Temperature: 60VDC or 30AC RMS
Range: -30 to 400°F (-34 to 204°C)
Resolution: 0.1°
Accuracy: ±1°F (32 to 120°F); ±0.5°C (0 to 49°C),
±1% + 1.5°F (-4 to 400°F);
±1% + 1°C (-20 to 204°C),
±2% + 4°F (-30 to -4°F);
±2% + 2°C (-34 to -20°C)
Sensor type: K-type thermocouple
Field °F calibration
For accuracies of ±°F, calibrate the Fieldpiece SC45 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.
Fieldpiece SC45 calibration
  1. Select the 400°F range.
  2. Remove back case (2 screws on back, one near clamp, other near base). Leave battery cover attached so batteries stay within back case.
  3. Stabilize a large cup of ice water
  4. Immerse the thermocouple probe and let it stabilize
  5. To change the temperature scale to °C, close the jumper just below VR5
  6. Adjust VR5 calibration pot with a small screwdriver to get within 0.1° of 32°F (0°C). Each 1/4 turn should adjust the temperature about 3°, no more than 10° total. There’s no need rotating the screw more than 360°; doing so gets you back to where you started.
  7. Attach case without screws to preview the temperature and continue until you have it dialed in.
Physical Specifications
Display: 3 3/4 digit liquid crystal display (LCD) with a maximum reading of 3999.
Range: Manual ranging mode, hold button for 2 seconds to return to autoranging mode.
Overrange: "OL" or "-OL" mark indication.
Auto power off: 10 minutes
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 74°F ±8°F (23°C ±4°C), >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).
Power: Two AAA 1.5V batteries
Battery life: 400 hours typical with alkaline
Safety: Designed to meet IEC61010-1 (EN61010-1) and IEC61010-2-032 (EN61010-2-032), clamp is CATIII 300V, class II, voltage Cat.III 600V, and pollution degree 2 indoor use comply with CE, C-tick certified, UL listed
Ordering Information
Model Description Buy Online Price
SC46  Fieldpiece SC46 True RMS Mini Clamp Meter Discontinued
See: SC260
Included Accessories
  • 1 - Vinyl Test Leads
  • 1 - Mini Clamp-On Meter Case (ACH4)
  • 2 - 1.5V "AAA" batteries (installed)
  • 1 - Operator’s manual
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