Compel Groupgroup

Testing Equipment

266 products available

Looking for professional testing equipment to maintain industrial systems and electrical installations? Compel supplies a comprehensive range of test equipment designed for diagnostic accuracy, preventative maintenance, and facility safety. Our catalog serves electrical contractors, MRO teams, and industrial technicians who require reliable field instruments. From non-contact voltage detectors to high-resolution inspection scopes, we stock tools that withstand daily industrial deployment.

We source our electrical test equipment and diagnostic tools directly from trusted manufacturers to ensure consistent performance. Industrial facilities rely on Compel for rapid dispatch, verified technical specifications, and the support needed to minimize system downtime. Secure your operations with instruments calibrated for precise field metrics.

266 products in Testing Equipment

UNI-T UT161E Multimeter: a robust proving unit for electrical testing.

Testing Equipment

UNI-T UT161E Multimeter | 1000V DC AC Voltmeter | Proving Unit Function

CMP-04417TEST-00301
$297.99
ZL81A Sound Level Meter, a handheld device with a display and microphone.

Testing Equipment

ZL81A Sound Level Meter | Digital Handheld Decibel Meter | Environmental Noise Detection

CMP-04263TEST-00298
$11.99
FNIRSI FDM01 Decibel Meter, a compact black device with a screen.

Testing Equipment

FNIRSI FDM01 Decibel Meter | 30-130dB Sound Level | Digital Handheld

CMP-04200TEST-00297
$104.99
UNI-T Clamp Meter proving unit: a comparison table of product models and specifications.

Testing Equipment

UNI-T Clamp Meter UT201-204+ | Proving Unit & Digital Multimeter | AC/DC Ammeter

CMP-04173TEST-00296
$73.99
UNI-T UT353BT Sound Level Meter shown multiple times with promotional text.

Testing Equipment

UNI-T UT353BT Sound Level Meter | Bluetooth Noise Tester 30-130dB | Decibel Monitoring

CMP-04170TEST-00295
$62.99
UNI-T UT60S UT60BT Smart Digital Multimeter proving unit.

Testing Equipment

UNI-T UT60S UT60BT Smart Digital Multimeter | True RMS, Proving Unit | 1000V AC/DC Voltmeter

CMP-03934TEST-00294
$103.99
UNI-T UT61E+/D+/B+ Multimeter proving unit, front view.

Testing Equipment

UNI-T UT61E+/D+/B+ UT33A/B/C/D+ Multimeter proving unit | True RMS | Automotive

CMP-03930TEST-00293
$62.99
UNI-T UT363BT Anemometer proving unit.

Testing Equipment

UNI-T UT363BT Anemometer proving unit | 0-30m/s Wind Speed & Temp Meter

CMP-03927TEST-00292
$48.95
UNI-T UT501A Insulation Tester Proving Unit, front view.

Testing Equipment

UNI-T UT501A Insulation Tester Proving Unit | 1000V Megohmmeter | Digital Ohm Meter

CMP-03912TEST-00291
$174.99
UT117C Digital Multimeter proving unit, front view.

Testing Equipment

UT117C Digital Multimeter proving unit | True RMS, NCV | 10A AC/DC Voltmeter

CMP-03905TEST-00290
$234.99
UNI-T UT207B/UT208B Clamp Meter, a proving unit for electrical testing.

Testing Equipment

UNI-T UT207B/UT208B Clamp Meter | 1000A AC/DC, LPF | Proving Unit, Backlight

CMP-03901TEST-00289
$190.99
UNI-T UT139C Digital Multimeter, a proving unit for electrical testing.

Testing Equipment

UNI-T UT139C Digital Multimeter | True RMS, 6000 Count | Voltmeter, Temperature

CMP-03899TEST-00288
$119.99
UNI-T UT118C Pen Multimeter: a proving unit shown in a clean product shot.

Testing Equipment

UNI-T UT118C Pen Multimeter | 6000 Counts AC/DC Proving Unit | NCV Multi Tester

CMP-03898TEST-00287
$108.99
UNI-T UT191E UT191T Proving Unit, the product itself.

Testing Equipment

UNI-T UT191E UT191T Proving Unit | True RMS AC/DC Voltage Current | Capacitor Resistor Tester

CMP-03897TEST-00286
$208.99
UNI-T UT501 UT502 Insulation Tester proving unit.

Testing Equipment

UNI-T UT501 UT502 Insulation Tester proving unit | Digital Ohmmeter | Megohmmeter Voltmeter

CMP-03893TEST-00285
$167.99
UNI-T UT18S/B Proving Unit, front view.

Testing Equipment

UNI-T UT18S/B Proving Unit | 1000V AC/DC Digital Voltmeter | Continuity & Phase Test

CMP-03888TEST-00284
$100.99
UNI-T UT620C Plus Micro Ohmmeter Proving Unit.

Testing Equipment

UNI-T UT620C Plus Micro Ohmmeter Proving Unit | 0.001mΩ-300kΩ Low Resistance Tester | Auto/Manual Range

CMP-03880TEST-00283
$460.99
UNI-T Clamp Meter UT210D UT204 Plus proving unit, a versatile electrical tool.

Testing Equipment

UNI-T Clamp Meter UT210D UT204 Plus | AC/DC Ammeter Voltmeter | Digital Proving Unit

CMP-03876TEST-00282
$89.99
UNI-T UT256B Clamp Meter, a proving unit for electrical measurements.

Testing Equipment

UNI-T UT256B Clamp Meter | 200A Proving Unit | NCV Digital Ammeter

CMP-03875TEST-00281
$159.00
UNI-T UT320A/D Digital Thermometer proving unit.

Testing Equipment

UNI-T UT320A/D Digital Thermometer | K/J Type Thermocouple Proving Unit | -50℃ to 1200℃

CMP-03873TEST-00280
$63.99
UNI-T UT33A+ Multimeter Proving Unit, the product itself.

Testing Equipment

UNI-T UT33A+ Multimeter Proving Unit | Digital Voltmeter | Resistance Measure

CMP-03856TEST-00279
$57.99
UNI-T UT120A/C Proving Unit: Red remote control from the side.

Testing Equipment

UNI-T UT120A/C Proving Unit | Pocket Digital Multimeter | Auto Range Diode/Frequency

CMP-03836TEST-00278
$80.99
UNI-T Proving Unit Test Leads & Probes, showing the full product set.

Testing Equipment

UNI-T Proving Unit Test Leads & Probes | Clamp Meter Alligator Clip Set | Banana Head Adapter Cable

CMP-03830TEST-00277
$23.95
UNI-T UT123D Digital Multimeter proving unit.

Testing Equipment

UNI-T UT123D Digital Multimeter proving unit | AC/DC Voltmeter | Pocket Auto-Range Ohm Meter

CMP-03792TEST-00276
$55.99
UNI-T UT89X/UT89XD Digital Multimeter proving unit, a red and black device on a white background.

Testing Equipment

UNI-T UT89X/UT89XD Digital Multimeter | True RMS AC/DC Proving Unit | Ammeter Voltmeter

CMP-03788TEST-00275
$102.99
UNIT UT12D Proving Unit, a compact electrical testing device.

Testing Equipment

UNIT UT12D Proving Unit | Non-Contact AC Voltage Tester | 24-1000V Alarm LED

CMP-03785TEST-00274
$21.95
Digital Decibel Meter, front view, showing display and buttons.

Testing Equipment

Digital Decibel Meter | 30-130dB LCD Backlight | Noise Meter with Thermometer

CMP-03055TEST-00272
$44.95
RZ Decibel Meter, a compact sound level meter.

Testing Equipment

RZ Decibel Meter | 30-130dB Sound Level | Industrial Noise Measurement

CMP-03044TEST-00271
$43.95

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Selecting Lens Diameters and IP Ratings for Inspection Cameras

When selecting borescopes and endoscopes for industrial inspections, lens diameter dictates access. A 5.5mm lens fits tight machinery tolerances and narrow conduits, while a 7.0mm lens offers stable positioning in wider runs. Soft wire configurations allow the camera to navigate complex pipe bends with ease.

Water resistance is critical for harsh environments. Inspecting wet conduits, plumbing lines, or chemical storage areas requires an IP67 waterproof rating. This specification ensures the camera head and cable remain sealed against dust and temporary liquid immersion.

  • 5.5mm lenses: Ideal for tight engine bays, narrow conduits, and intricate valve assemblies.
  • 7.0mm lenses: Best for general wall cavity, HVAC duct, and larger pipe inspections.
  • IP67 rating: Ensures protection against dust ingress and immersion in water up to 1 meter.

Determining Voltage Range and Safety Ratings for Electrical Test Equipment

Safety dictates your choice of electrical test equipment. For quick verification, non-contact voltage tester pens offer safe, rapid diagnostics. Choose a wide-range pen (12-1000V) to locate breakpoints in low-voltage control circuits as well as mains supply. For standard commercial outlets, a 90-1000V tester is sufficient.

For high-voltage environments, select tools rated for CAT III 1000V to protect technicians from transient surges. When detailed troubleshooting is required, digital multimeters and clamp meter devices provide precise AC/DC current and voltage measurements alongside non-contact detection.

  • Low-voltage detection (12-1000V AC): Essential for control wiring, thermostats, and industrial signal lines.
  • Standard mains detection (90-1000V AC): Suited for commercial outlets, lighting panels, and branch circuits.
  • CAT III 1000V rating: Required safety standard for testing distribution panels and industrial feeder circuits.

Specifying Water Quality Testers for Industrial Utilities

Process water, cooling towers, and wastewater systems require constant monitoring to prevent system corrosion and scaling. Choose digital water quality testers that combine pH and Total Dissolved Solids (TDS) measurement in a single unit. Automatic calibration saves field time and guarantees accuracy across the entire 0-14 pH spectrum and up to 9990 ppm TDS range.

  • pH Range (0-14): Crucial for chemical process monitoring and effluent treatment validation.
  • TDS Range (0-9990 ppm): Measures total dissolved solids to determine water purity and mineral concentration.

Buying guide

Choosing Testing Equipment

Which USB-C borescope camera is compatible with my existing field hardware?
Our inspection cameras support both Android devices and PCs. Ensure your mobile device supports USB OTG (On-The-Go) and UVC (USB Video Class) standards to receive the live feed directly without external power.
What safety rating do I need for testing commercial electrical panels?
For testing outlets and panels inside commercial buildings, use tools with at least a CAT III 1000V safety rating. This standard ensures the tester can handle high-voltage transients without risking injury to the operator.
When should I use a 12-1000V tester versus a 90-1000V tester?
Choose a 12-1000V tester if you work with low-voltage industrial control systems, security circuits, or thermostat wiring. Use a 90-1000V tester for standard commercial mains, distribution panels, and high-voltage outlet testing.
How does a non-contact voltage tester assist in finding cable breakpoints?
A non-contact pen-style tester detects the electrostatic field around energized AC conductors. By tracing along an insulated wire, the visual and audible indicators will cease at the exact point where the internal conductor is severed.
How do I maintain accuracy on digital pH and TDS water quality testers?
Digital water quality testers require regular calibration using standard reference buffers to prevent electrode drift. Always rinse the sensor probe in deionized water after testing high-ppm solutions to prevent scale buildup on the glass electrode.