User's Manual

Product Flyer

Package Art

Ad

Features and Benefits

Competitive Advantages

What's Included?

Recommended

Specifications

What is It?

How Does it Work?

Features and Benefits

Designed specifically for HVAC/R field service, the SC77 is a dedicated DMM and offers specific features and benefits to HVAC/R field service pros including:

Works with 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 and hold the NCV button. The NCV LED will light with an analog feel 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 (24V to 600V, 50Hz to 60Hz).

High Voltage and Continuity Indicators
If you were doing lab testing, these features would probably drive you crazy.  We’ve heard from more than one HVAC/R veteran that these features really remind you of what you’re doing and they’ve avoided potentially dangerous situations in the field.  The Hi-V LED and beeper let you know when you’ve hooked up to a circuit over 30V.  The continuity LED and beeper tells you if a circuit is open or closed.

300AAC
Using the built-in amp clamp, read 0-300 amps directly on your meter with 0.1 resolution.   

Capacitance (MFD)
Measure microfarads on motor-run and motor-start capacitors using this range.  Disconnect the capacitor from power first. Short the terminals to discharge the capacitor. Disconnect any resistors that might be between the terminals of the capacitor and measure to check for degradation.

Temperature
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,

Microamps DC - Flame Rectification Tests
The most common ‘no heat” call has to do with a malfunctioning flame sensing diode.  Simply turn the meter to microamps DC, hook up, and see if the flame sensing rod is functioning properly.

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.

Silicone Leads with Detachable Probe Tips
Because the wire insulation is silicone, the leads stay flexible in cold weather and will not melt if bumped by a soldering iron. When testing electrical circuits with two hands, there is a risk that a careless mistake may complete a circuit through your body and potentially cause death or injury. Use the probe clip on the amp clamp to connect and firmly hold the V lead in place, detach the COM probe tip, connect an alligator lead tip to COM and ground, and perform a one-hand test more easily than most meters on the market. Built-in lead storage makes it easy to keep everything together from job to job.

Wire Grabbing Jaw
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. Now you can select the wire without holding the jaws open

Bright Blue Backlight
Easily read the display in overcast conditions or in dimly lit areas.

Hold
The HOLD button is easily pressed while holding the mini clamp meter naturally in your hand. It holds any reading on your meter so you can concentrate on the test points and look at the LCD after you’ve disconnected.

And More:

• Volts AC.
• Volts DC.
• Resistance (Ohms).
• Diode Test
• Rugged ABS case.
• Ergonomic shape fits naturally in your hand.
• Auto power-off (APO) to conserve battery life.

Competitive Advantages

Recommended Accessories and Replacement Parts

Technicians who like the SC77 may also enjoy these instruments and accessories:

	Expandable True RMS Stick Multimeter with Backlight - HS36 Our top of the line True RMS Stick Meter, the HS36 includes the ranges you use everyday for HVAC/R field service plus includes a bright blue backlight and True RMS. Like the rest of the HS30 series, the HS36 comes equipped with a magnetic hanger, along with detachable silicone test leads and alligator clip probe tips for remote and easy one-handed testing, as well as the full set of built-in safety features.  This auto-ranging stick meter also includes a bar graph on the LCD for an analog feel. Technicians who prefer our expandable stick meters tell us this is the best digital multimeter for HVAC/R field Service. Read More..
	Dual-Temperature Meter – ST4 The Fieldpiece Dual-Temperature Meter, model ST4, measures two temperatures simultaneously using the included k-type, wrap tab beaded thermocouples. The technology inside the ST4 provides superior temperature compensation in rapidly changing environments commonly found while performing field service. Use the ST4 to find Delta T and just about any temperature split you want to measure. Displays T1, T2 and T1-T2 in big numbers on the LCD screen. Features two front face calibration pots and comes in our clear front case with magnetic hanger model ANC6. Use with our optional ATWB1 wet bulb thermocouple to help you find target superheat or with our pipe clamp T/Cs to check for blocked dryer filters. Read More..
	Superheat and Subcooling Accessory for Air Conditioning – ASX14 The Fieldpiece Superheat and Subcooling Accessory for Air Conditioning, model ASX14, measures suction line, or low side, line temperature and pressure. It then calculates actual superheat in real time using built in P/T charts. It also measures liquid line, or high side, line temperature and pressure, and calculates actual subcooling. Use it to get actual superheat on R-22 and R-410A fixed orifice systems and actual subcooling on TXV / TEV regulated systems. Use the “T” fitting to charge to actual superheat or subcooling by putting the ASX14 in-line between your refrigerant bottle and the system. Read More..
	Large Deluxe Meter Case - ANC8 The Large Deluxe Meter Case, model ANC8, is a technician favorite because it handles a lot of gear for an affordable price. It has four pockets in all, including a deep center pocket that holds a combination of 2 full-size meters and 4 accessory head instruments. Features include rugged nylon construction, padding, durable pockets inside and out, a rugged double zipper and a shoulder strap. The ANC8 is a must have upgrade for any technician that has multiple Fieldpiece meters and accessory heads. Read More..

Specifications

TECHNICAL SPECIFICATIONS
Display: LCD with a maximum reading of 4000.
Data Hold: Operating on all ranges
Range(RNG): Operating on all autoranges
Overrange: "OL" mark indication.
Auto power off: Approx. 10 minutes.
Measurement rate: 2 times per second, 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 conductor.
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/EN61010- 2-032, 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(50Hz - 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(50Hz - 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 (-35 to 600°C)
Resolution: 0.1°
Accuracy: ±1°F (32 to 120°F)
±1% + 1.5°F (-4 to 750°F)
±2% + 4°F (-30 to -4°F, 750 to1000°F)
±1°C (0 to 120°C),
±1% + 1°C (0 to 400°C)
±2% +3°C (-35 to 0°C, 400 to 600°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, 40μF, 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.

Field Temp. calibration
For accuracies of ±1° calibrate the SC76 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 SC76.
2. Remove back case. Hold the battery in place with a rubber band.
3. Stabilize a large cup of ice water.
4. Immerse the probe and let it stabilize.
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.