Power Monitors | McMaster-Carr

Record data over time to monitor energy consumption and troubleshoot intermittent problems such as voltage spikes. These loggers connect to a computer to download data for later analysis.

Set the sampling interval to determine how often the logger takes measurements. True RMS loggers take more accurate AC measurements than other loggers.

Measures AC Voltage and Current

AC Voltage and Current

										Batteries
Data Log Capacity	Electrical Phase	AC Voltage	AC Voltage Accuracy	Current, A	Current Accuracy	Sampling Interval	Includes	For Operating System	Software Included	Included	Size	No. Required		Each
10,750	Single	0-500	1V	0-300	5%	1 sec. to 18 hrs.	Carrying Case, Clamp-On Probe with 1.1" Jaw Opening, Test Leads with Alligator Clips	Windows 10 and earlier	No, Required	No	9V	1	0000000	0000000

9V Battery (Pkg. of 1)	00000000	Pkg.	00000
Required Software for AC Voltage and Current Loggers (6 ft. Cord Lg.)	0000000	Each	00000

Measures AC and DC Voltage

AC and DC Voltage

Data Log Capacity	AC Calculation	Electrical Phase	Safety Rating	AC Voltage	AC Voltage Accuracy	DC Voltage	DC Voltage Accuracy	Sampling Interval	Includes	For Operating System	Software Included	Batteries Included		Each
240,000	True RMS	Single	CAT IV, 300V	0-600	0.5%	0 to 600	0.5%	125 ms to 24 hrs.	Test Leads with Alligator Clips, USB Cord	Windows 10 and earlier	Yes	Yes	0000000	0000000

Fluke Scopemeters

Perform electrical tests, record data, and see a graph of electrical waveforms with this combination multimeter and oscilloscope. Fluke scopemeters are known for quality and durability.

To download and analyze data on a computer, software is required (not included).

When used as an oscilloscope, the scopemeter is most accurate when the frequency is at least five times the maximum signal frequency you intend to measure.

The multimeter function is true RMS, so it accurately takes AC measurements regardless of the load type or sine wave shape. This is important for testing electronic devices that draw current in short pulses that can distort the shape of the wave, such as computers and adjustable-speed drives.

Display count is an industry designation and not an actual value. This 5,000-count scopemeter shows numbers up to 4,999.

True RMS AC Calculation
Manufacturer Model Number	No. of Digital Channels	Frequency	Safety Rating	Max. AC Voltage	Max. DC Voltage	DC Voltage Accuracy	Display Count	Data Log Capacity	Includes	Specifications Met	Measures	Batteries Included		Each
123B	2	0-20 MHz	CAT IV, 600V	600	600	0.5%	5,000	512	Alligator Clips, Battery Charger, BNC Adapter, Probe Tips, Test Leads	CSA Certified	AC Voltage, Capacitance, Continuity, DC Voltage, Temperature	Yes	0000000	000000000

Fluke SCC120B Software and Hard Case with Screen Protector, Magnet Hanging Kit (For Windows 10 and earlier)	0000000	Each	0000000
Replacement Test Leads (Fluke Model No. STL120-IV)	0000000	Pair	000000
Optional Fabric Case (Fluke Model No. C789)	00000000	Each	000000

Fluke Data-Logging Multimeters

Record measurements from electrical tests over time to identify intermittent issues such as voltage spikes and temporary power flow problems. Review data captured by these high-quality and durable Fluke multimeters in real-time or save it for future analysis.

To download and analyze data on a computer, software is required (not included).

These true RMS multimeters take accurate AC measurements regardless of the load type or sine wave shape. This is important for testing electronic devices that draw current in short pulses that can distort the shape of the wave, such as computers and adjustable-speed drives.

Display count is an industry designation and not an actual value. These 50,000-count multimeters show numbers up to 49,999.

Multimeters with calibration certificate include a NIST-traceable document stating that they have passed a test for accuracy.

Multimeters
Manufacturer Model Number	Data Log Capacity	Safety Rating	Measures	Max. AC Voltage	Max. DC Voltage	DC Voltage Accuracy	Max. AC Current, A	Max. DC Current, A	Hardware Features	Display Count	Includes		Each
True RMS AC Calculation
287	10,000	CAT IV, 600V	AC Voltage, Capacitance, Current, DC Voltage, Frequency, Resistance, Temperature	1,000	1,000	0.025%	10	10	Overload Protection	50,000	Alligator Clips, Test Leads	0000000	0000000
289	15,000	CAT IV, 600V	AC Voltage, Capacitance, Current, DC Voltage, Frequency, Low Impedance, Resistance, Temperature	1,000	1,000	0.025%	10	10	Overload Protection	50,000	Alligator Clips, Test Leads	0000000	000000
Multimeters with Calibration Certificate
True RMS AC Calculation
287	10,000	CAT IV, 600V	AC Voltage, Capacitance, Current, DC Voltage, Frequency, Resistance, Temperature	1,000	1,000	0.025%	10	10	Overload Protection	50,000	Alligator Clips, Test Leads	0000000	000000
289	15,000	CAT IV, 600V	AC Voltage, Capacitance, Current, DC Voltage, Frequency, Low Impedance, Resistance, Temperature	1,000	1,000	0.025%	10	10	Overload Protection	50,000	Alligator Clips, Test Leads	0000000	000000

Software for Fluke Multimeters

Download and analyze data from a Fluke data-logging multimeter. Connect your multimeter to a computer with the included USB cord.

Manufacturer Model Number	For Fluke Model Number	For Operating System		Each
FVF-SC2	287, 289	Windows 7 and earlier	0000000	0000000

Data-Logging Multimeters

Identify intermittent issues such as voltage spikes and temporary power flow problems—this meter records measurements from electrical tests over time. Review data in real-time or save it for future analysis.

This true RMS multimeter takes accurate AC measurements regardless of the load type or sine wave shape. This is important for testing electronic devices that draw current in short pulses that can distort the shape of the wave, such as computers and adjustable-speed drives.

Display count is an industry designation and not an actual value. This 6,000-count multimeter shows numbers up to 5,999.

Multimeters												Replacement Test Leads
Data Log Capacity	Safety Rating	Measures	Max. AC Voltage	Max. DC Voltage	DC Voltage Accuracy	Max. AC Current, A	Max. DC Current, A	Display Count	Includes		Each		Pair
True RMS AC Calculation
40,000	CAT IV, 600V	AC Voltage, Capacitance, Current, DC Voltage, Frequency, Resistance, Temperature	1,000	1,000	0.09%	10	10	6,000	Alligator Clips, Carrying Case, Temperature Probe, Test Leads	0000000	0000000	0000000	000000

Multimeters

Take current, voltage, resistance, and other electrical measurements.

Average sensing multimeters take accurate AC measurements when testing equipment that has a linear load and draws current in a smooth sine wave, such as standard induction motors. True RMS multimeters take accurate AC measurements regardless of the load type or sine wave shape. This is important for testing electronic devices that draw current in short pulses that can distort the shape of the wave, such as computers and adjustable-speed drives.

Display count is an industry designation and not an actual value. For example, a 6,000-count multimeter shows numbers up to 5,999. A higher display count means the multimeter can give a more precise measurement.

Multimeters												Replacement Test Leads
Safety Rating	Measures	Max. AC Voltage	Max. DC Voltage	DC Voltage Accuracy	Max. AC Current	Max. DC Current	Hardware Features	Display Count	Includes		Each		Pair
Average Sensing AC Calculation
CAT III, 300V	AC Voltage, Current, DC Voltage, Resistance	600	600	1%	200 mA	200 mA	Overload Protection	2,000	Magnetic Hanger, Test Leads	0000000	000000	0000000	000000
CAT III, 600V	AC Voltage, Current, DC Voltage, Resistance	600	600	0.5%	2 A	2 A	Overload Protection	2,000	Magnetic Hanger, Test Leads	0000000	000000	0000000	00000
CAT III, 600V	AC Voltage, Capacitance, Current, DC Voltage, Frequency, Resistance, Temperature	600	600	0.5%	10 A	10 A	Overload Protection	4,000	Temperature Probe, Test Leads	0000000	00000	000000	00
True RMS AC Calculation
CAT III, 600V	AC Voltage, Current, DC Voltage, Resistance, Temperature	600	600	0.5%	10 A	10 A	Overload Protection	6,000	Temperature Probe, Test Leads	0000000	000000	0000000	00000
CAT III, 600V	AC Voltage, Capacitance, Current, DC Voltage, Frequency, Resistance, Temperature	600	600	0.3%	10 A	10 A	Lead Storage	4,000	Temperature Probe, Test Leads	0000000	00000	0000000	00000
CAT III, 600V	AC Voltage, Capacitance, Current, DC Voltage, Frequency, Resistance, Temperature	750	1,000	0.5%	10 A	10 A	Overload Protection	4,000	Alligator Clips, Magnetic Hanger, Temperature Probe, Test Leads	0000000	000000	0000000	00000
CAT IV, 600V	AC Voltage, Capacitance, Current, DC Voltage, Frequency, Resistance, Temperature	750	1,000	0.25%	10 A	10 A	Overload Protection	10,000	Alligator Clips, Magnetic Hanger, Temperature Probe, Test Leads	0000000	000000	0000000	00000
CAT IV, 600V	AC Voltage, Capacitance, Current, DC Voltage, Frequency, Low Impedance, Resistance, Temperature	1,000	1,000	1%	10 A	10 A	Lead Storage, Overload Protection	4,000	Alligator Clips, Carrying Case, Temperature Probe, Test Leads	0000000	000000	0000000	00000

Water-Resistant Multimeters

Perform electrical tests in washdown environments. These multimeters have an IP67-rated housing.

Display count is an industry designation and not an actual value. For example, a 4,000-count multimeter shows numbers up to 3,999. A higher display count means the multimeter can give a more precise measurement.

Multimeters												Replacement Test Leads
Safety Rating	Measures	Max. AC Voltage	Max. DC Voltage	DC Voltage Accuracy	Max. AC Current, A	Max. DC Current, A	Hardware Features	Display Count	Includes		Each		Pair
Average Sensing AC Calculation
CAT IV, 600V	AC Voltage, Capacitance, Current, DC Voltage, Frequency, Resistance	1,000	1,000	0.5%	10	10	Overload Protection	4,000	Carrying Case, Magnetic Hanger, Test Leads	0000000	0000000	0000000	000000
True RMS AC Calculation
CAT IV, 600V	AC Voltage, Capacitance, Current, DC Voltage, Frequency, Resistance, Temperature	1,000	1,000	0.06%	20	20	Overload Protection	40,000	Carrying Case, Magnetic Hanger, Temperature Probe, Test Leads	0000000	000000	000000	00

Pocket-Size Multimeters

Perform a variety of electrical tests with a multimeter that fits in your pocket.

These multimeters are average sensing, so they take accurate AC measurements when testing equipment that has a linear load and draws current in a smooth sine wave, such as standard induction motors.

Average Sensing AC Calculation
Safety Rating	Measures	Max. AC Voltage	Max. DC Voltage	DC Voltage Accuracy	Max. AC Current, mA	Max. DC Current, mA	Hardware Features	Display Count	Includes		Each
CAT III, 300V	Capacitance, Frequency, Resistance, AC Voltage, DC Voltage	450	450	1.2%	__	__	__	6,000	Carrying Case, Test Leads	000000	000000
CAT III, 300V	Capacitance, Frequency, Resistance, Current, AC Voltage, DC Voltage	600	600	1.5%	2	2	Overload Protection	6,000	Carrying Case, Test Leads	000000	00000
CAT IV, 600V	Capacitance, Frequency, Resistance, Current, AC Voltage, DC Voltage	600	600	0.8%	200	200	Lead Storage	4,000	Test Leads	0000000	00000

Magnetic Hangers for Fluke Multimeters

Free up your hands while using your Fluke multimeter by suspending it from this hanger.

Manufacturer Model Number	For Fluke Model Number		Each
TPAK	77IV, 83V, 87V, 88V, 113, 114, 115, 116, 117, 175, 177, 179, 233, 287, 289, 789, 1577, 1587	0000000	000000

Carrying Cases for Fluke Multimeters

Fabric Case

Hard Case

Tool Bag

Manufacturer Model Number	Case Type	For Fluke Model Number		Each
C116	Fabric Case	233, 287, 289	0000000	000000
C550	Tool Bag	27 II, 28 II, 77IV, 83V, 87V, 114, 115, 116, 117, 175, 177, 179, 233, 287, 289, 324, 355, 373, 374, 376, 381, 787, 789, 1577, 1587, 3000 FC, T5-600, T5-1000	0000000	000000
CXT280	Weatherproof Hard Case	27 II, 28 II	0000000	000000

Clamp-On Multimeters

Suitable for testing high current, these multimeters have jaws that surround a cable to test without interrupting the circuit. They include test leads to perform other electrical tests.

Multimeters												Replacement Test Leads
Jaw Opening	Safety Rating	Measures	Max. AC Voltage	Max. DC Voltage	DC Voltage Accuracy	Max. AC Current, A	Max. DC Current, A	Display Count	Includes		Each		Pair
Average Sensing AC Calculation
1"	CAT III, 600V	AC Voltage, Capacitance, Current, DC Voltage, Frequency, Resistance, Temperature	600	600	1%	600	__	4,000	Carrying Case, Temperature Probe, Test Leads	0000000	0000000	0000000	000000
1.06"	CAT III, 600V	AC Voltage, Current, DC Voltage, Resistance	600	600	1%	400	__	10,000	Carrying Case, Test Leads	0000000	000000	0000000	00000
1.7"	CAT III, 600V	AC Voltage, Capacitance, Current, DC Voltage, Frequency, Resistance, Temperature	600	600	1.5%	1,000	__	4,000	Built-In Infrared Temperature Sensor, Carrying Case, Test Leads	0000000	000000	0000000	00000
True RMS AC Calculation
1.18"	CAT IV, 300V	AC Voltage, Capacitance, Current, DC Voltage, Frequency, Resistance	600	600	1%	600	600	6,000	Carrying Case, Test Leads	0000000	000000	0000000	00000
1.18"	CAT III, 600V	AC Voltage, Capacitance, Current, DC Voltage, Frequency, Resistance, Temperature	750	1,000	0.8%	600	600	6,000	Temperature Probe, Test Leads	0000000	000000	0000000	00000
1.7"	CAT III, 600V	AC Voltage, Capacitance, Current, DC Voltage, Frequency, Resistance, Temperature	600	600	1.5%	1,000	1,000	4,000	Built-In Infrared Temperature Sensor, Carrying Case, Temperature Probe, Test Leads	0000000	000000	0000000	00000
2"	CAT IV, 600V	AC Voltage, Capacitance, Current, DC Voltage, Frequency, Resistance	1,000	1,000	0.8%	1,000	1,000	6,000	Carrying Case, Test Leads	0000000	000000	0000000	00000

Fluke Test Lead Kits

These kits include a set of red and black Fluke test leads with a variety of interchangeable tips.

The connection end on the test leads is a 4 mm banana plug, which is the standard for connecting to a multimeter.

Manufacturer Model Number	For Fluke Model Number	AC Voltage	DC Voltage	Current, A	Safety Rating	Includes	Cord Lg.	Color		Each
TL220	27 II, 28 II, 83V, 87V, 114, 115, 116, 117, 123, 175, 177, 179, 233, 287, 289, 373, 374, 787, 789	1,000	1,000	10	CAT II, 1,000V	Two Cords with Sheathed Straight Banana Plug and Sheathed Right-Angle Banana Plug, Two Needle Tips, Two Insulated Plunger Style Alligator Clips	59"	Black, Red	0000000	000000
TLK-225	27 II, 28 II, 83V, 87V, 175, 177, 179, 287, 289, 787, 789, 1577, 1587	1,000	1,000	1	CAT IV, 600V	Two Cords with Sheathed Straight Banana Plug and Sheathed Right-Angle Banana Plug, Two Needle Tips, Two Insulated Alligator Clips, Two Retractable Grabbers, Two Retractable Precision Grabbers, Two Retractable Precision Hooks, Pouch	59"	Black, Red	0000000	000000
TLK289	287, 289, 376, 381	1,000	1,000	3	CAT II, 1,000V	Two Cords with Sheathed Straight Banana Plug and Sheathed Right-Angle Banana Plug, Two Needle Tips, Two Insulated Alligator Clips, Two Retractable Grabbers, Two Retractable Precision Hooks, Thermocouple, Magnetic Hanger, Pouch	59"	Black, Red	0000000	000000

Fluke Test Sensors

Take temperature or pressure readings with a Fluke multimeter.

The Fluke 80BK-A is a temperature probe and works with Fluke multimeters that measure temperature. It has 4 mm banana jack connection ends that attach to Fluke test leads that have 4 mm banana plugs.

The Fluke PV350 converts a Fluke multimeter to a pressure and vacuum gauge. Attach the 4 mm banana plug connection ends to 4 mm banana jacks on multimeters.

Measures Temperature

80BK-A

Manufacturer Model Number	For Fluke Model Number	Temperature Range, °F	Test End	Connection End	Cord Lg.	Test End Insulation Material		Each
80BK-A	28 II, 87V, 116, 179, 233, 287, 289	-40° to 500°	Needle Tip	Sheathed Banana Jack	39"	PTFE	0000000	000000

Measures Pressure and Vacuum

PV350

Manufacturer Model Number	For Fluke Model Number	Pressure Range, psig	Vacuum Range	Test End	Connection End	Cord Lg.		Each
PV350	27 II, 28 II, 83V, 87V, 175, 177, 179, 233, 287, 289, 789	0-500	0-29.9in. of Hg	1/4 Female NPT Connection, 1/4 Male Flare Connection	Sheathed Banana Plug	96"	0000000	0000000

Status-Indicating DIN-Rail Power Supplies

Monitor voltage, current, remaining life, and other maintenance data from your PC, PLC, or by glancing at the digital display. There's no need to inspect these power supplies with multimeters or other test equipment. They also connect to your network, so you can view and analyze data remotely. Like other power supplies, they convert AC to DC voltage to power electronic equipment. Mount these power supplies onto DIN rails, which are commonly found inside industrial cabinets and electrical panels. All have spring-clamp wire terminals for quick connections that hold firmer than screw-style terminals.

Download the free software to view readings, save historical data, and analyze performance over time. Having all of your data in one place means you can troubleshoot and create predictive maintenance plans without needing to walk the floor and open enclosures to perform inspections. Saving historical data reduces maintenance costs because you can better predict when equipment should be replaced. Set alarm conditions, so you're alerted if a particular reading is too high or low. All power supplies are compatible with common Ethernet communication standards—check on them from anywhere without additional measuring equipment or sensors.

All of these power supplies use switching regulation, which means they produce the stated voltage despite fluctuations in your input power and the power being drawn by your system, and they won’t become too hot. They’re also SEMI F47 compliant, so they meet standards for maintaining output voltage when input voltage dips. This is commonly known as voltage sag immunity.

If you exceed the maximum voltage, temperature, or load, these power supplies protect both the power supply and the connected equipment. They also meet the voltage requirements for use in a PELV (protected extra low voltage) circuit.

Rated IP20, these power supplies prevent your fingers from touching internal components and accidentally shocking yourself. They're UL and C-UL Listed, TUV Rheinland Certified, and CE Marked so you know they meet stringent safety standards. With an NEC Class 2 and LPS output, if something fails inside the power supply, these limit the risk of electrical shock.

Maximum output noise is also known as ripple noise. The lower the value, the less interference the power supply creates. For most applications, a value over 100mVpp isn’t a problem. However, when using to power extremely sensitive electronics, such as audio equipment and high-precision measuring and testing equipment, you’ll want an output noise around 5mVpp or less.

Power factor shows how effectively a power supply draws AC power from the main electrical supply. The higher the power factor—up to a maximum score of 1—the lower your operating cost.

Efficiency describes how good a power supply is at converting the AC power it draws from your main electrical supply into DC power. High-efficiency power supplies cost less money to operate and produce less heat, meaning cooler temperatures in your electrical cabinet.

Power supplies with an output peak current briefly boost power above their maximum operating current for starting motors, actuating solenoid valves, and other applications that require a higher starting current than their operating current.

Output
Voltage (Adjustment Range)	Current, A	Peak Current	Power, W	Max. Output Noise, mVpp	Power Factor	Efficiency	Max. Transmission Distance, ft.	Ht.	Wd.	Dp.	Specifications Met		Each
Single Phase—100-240V AC Input Voltage
Spring-Clamp Terminals Input and Output
24V DC (21.6-28V DC)	5	6 A, 3 seconds	120	150	0.9 @ 230 V AC	90% @ 115 V AC 92% @ 230 V AC	325	3.5"	2.2"	3.5"	UL Listed, C-UL Listed, CE Marked, TUV Rheinland Certified, SEMI F47 Compliant	0000000	0000000
24V DC (21.6-28V DC)	10	15 A, 3 seconds	240	140	0.9 @ 230 V AC	91% @ 115 V AC 93% @ 230 V AC	325	4.9"	1.5"	4.7"	UL Listed, C-UL Listed, CE Marked, TUV Rheinland Certified, SEMI F47 Compliant	0000000	000000
24V DC (21.6-28V DC)	20	30 A, 3 seconds	480	130	0.9 @ 230 V AC	92% @ 115 V AC 94% @ 230 V AC	325	4.9"	2.4"	4.7"	UL Listed, C-UL Listed, CE Marked, TUV Rheinland Certified, SEMI F47 Compliant	0000000	000000
24V DC (23-24.1V DC)	3.75	__	90	300	Not Rated	86% @ 115 V AC 87% @ 230 V AC	325	3.5"	2.2"	3.5"	UL Listed, C-UL Listed, CE Marked, TUV Rheinland Certified, SEMI F47 Compliant	0000000	000000