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EXTECH

EXTECH is a brand of test and measurement instruments widely used in industrial maintenance, HVAC, electrical, and facility management applications. The product line includes multimeters, tachometers, refractometers, hygro-thermometers, refrigerant leak detectors, anemometers, psychrometers, and light meters, among others. EXTECH instruments are designed for field service, plant engineering, and quality control environments where portable, battery-powered measurement tools are required. Typical specifications include RPM accuracy of ±0.05% to ±0.1%, Brix accuracy of ±0.2%, and air velocity resolution down to 1 fpm. Many models feature data logging, LCD displays, and onboard sensors. The brand is known for offering a range of analog and digital instruments with varying levels of precision, from basic handheld units to more specialized devices like heated diode refrigerant leak detectors compatible with A2L refrigerants such as R-513A. EXTECH instruments are generally supplied without calibration certificates unless specified, though some models include NIST-traceable certification. 3G Electric stocks over 380 EXTECH SKUs, covering categories such as contact and non-contact tachometers, analog refractometers, data logging temperature and humidity meters, refrigerant leak detectors, vane anemometers, psychrometers, and light meters. These instruments are used for measuring rotational speed, surface speed, Brix concentration, ambient temperature, dew point, relative humidity, refrigerant leaks, air velocity, and light levels. The product range supports applications in HVAC system diagnostics, industrial machinery maintenance, food and beverage quality testing, and environmental monitoring. EXTECH instruments are built to standard industrial tolerances and are typically powered by replaceable batteries. The brand does not emphasize proprietary connectivity or software ecosystems; instead, it focuses on standalone functionality with clear analog or digital readouts. 3G Electric provides global logistics for EXTECH products, enabling procurement for plant engineers, maintenance managers, and procurement specialists worldwide. The selection includes models with and without NIST calibration certificates, allowing buyers to match instrument accuracy requirements with their specific quality assurance protocols.

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About EXTECH

EXTECH is a brand of test and measurement instruments widely used in industrial maintenance, HVAC, electrical, and facility management applications. The product line includes multimeters, tachometers, refractometers, hygro-thermometers, refrigerant leak detectors, anemometers, psychrometers, and light meters, among others. EXTECH instruments are designed for field service, plant engineering, and quality control environments where portable, battery-powered measurement tools are required. Typical specifications include RPM accuracy of ±0.05% to ±0.1%, Brix accuracy of ±0.2%, and air velocity resolution down to 1 fpm. Many models feature data logging, LCD displays, and onboard sensors. The brand is known for offering a range of analog and digital instruments with varying levels of precision, from basic handheld units to more specialized devices like heated diode refrigerant leak detectors compatible with A2L refrigerants such as R-513A. EXTECH instruments are generally supplied without calibration certificates unless specified, though some models include NIST-traceable certification. 3G Electric stocks over 380 EXTECH SKUs, covering categories such as contact and non-contact tachometers, analog refractometers, data logging temperature and humidity meters, refrigerant leak detectors, vane anemometers, psychrometers, and light meters. These instruments are used for measuring rotational speed, surface speed, Brix concentration, ambient temperature, dew point, relative humidity, refrigerant leaks, air velocity, and light levels. The product range supports applications in HVAC system diagnostics, industrial machinery maintenance, food and beverage quality testing, and environmental monitoring. EXTECH instruments are built to standard industrial tolerances and are typically powered by replaceable batteries. The brand does not emphasize proprietary connectivity or software ecosystems; instead, it focuses on standalone functionality with clear analog or digital readouts. 3G Electric provides global logistics for EXTECH products, enabling procurement for plant engineers, maintenance managers, and procurement specialists worldwide. The selection includes models with and without NIST calibration certificates, allowing buyers to match instrument accuracy requirements with their specific quality assurance protocols.

Common Applications

  • HVAC system diagnostics — EXTECH AN340 vane anemometer for air velocity and humidity measurement
  • Industrial machinery maintenance — EXTECH 461995 laser tachometer for RPM and surface speed checks
  • Food and beverage quality testing — EXTECH RF12 analog refractometer for Brix concentration measurement
  • Refrigerant leak detection — EXTECH RD350 heated diode leak detector for R-513A systems
  • Environmental monitoring — EXTECH RH490 data logging hygro-thermometer for temperature and humidity logging
  • Lighting inspection — EXTECH LT300-NIST light meter for illuminance measurement in workspaces

Frequently asked questions

Common questions about EXTECH from 3G Electric.

What types of tachometers does EXTECH offer, and what are their accuracy specifications?

EXTECH offers both contact and combination contact/non-contact tachometers. The contact tachometer model 461750 provides RPM accuracy of ±0.1% with a resolution of 0.001 RPM and a maximum contact RPM of 20,000. The combination laser tachometer model 461995 offers RPM accuracy of ±0.05% with a resolution of 0.1 RPM and a maximum contact RPM of 19,999. Both models include wheels for linear surface speed or RPM measurements and feature LCD displays.

Does the EXTECH RF12 refractometer require calibration before use?

The EXTECH RF12 analog handheld refractometer is factory-calibrated for Brix measurement from 0% to 18% Brix with an accuracy of ±0.2% Brix and a resolution of 0.2% Brix. It does not include a calibration certificate. For applications requiring NIST-traceable calibration, consider models that include such certification. The RF12 is designed for field use and can be checked against distilled water for zero adjustment.

What refrigerants is the EXTECH RD350 leak detector compatible with?

The EXTECH RD350 refrigerant leak detector uses a heated diode sensor and is compatible with R-513A refrigerant. It has a sensitivity of 0.11 oz/yr and is A2L compatible, meaning it can detect mildly flammable refrigerants. The detector is suitable for HVAC service technicians working with newer low-global-warming-potential refrigerants. Always verify compatibility with specific refrigerant blends before use.

Can the EXTECH AN340 anemometer log data for later analysis?

Yes, the EXTECH AN340 vane anemometer includes data logging capability. It measures air velocity with a resolution of 1 fpm, along with wet bulb temperature, dew point, and relative humidity. The instrument features an LCD display and is powered by batteries. Data logging allows users to record measurements over time for HVAC system balancing or environmental monitoring.

What is the temperature range of the EXTECH RH490 data logging hygro-thermometer?

The EXTECH RH490 data logging temperature and humidity meter has an onboard sensor with a temperature range of -22°F to 199°F. It measures relative humidity and logs data for analysis. The device dimensions are 7.8 in x 1.7 in x 1.3 in, making it portable for field use. It does not include a calibration certificate.

Does the EXTECH LT300-NIST light meter include a calibration certificate?

Yes, the EXTECH LT300-NIST light meter includes a certificate of calibration. It features a light sensor with a protective cover and an LCD display, with a light level accuracy of ±5%. The NIST-traceable certification ensures the instrument meets specified accuracy standards for applications requiring documented calibration.