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Handheld refrigerant leak detector with sensor probe

TEST PRODUCTS INTL. 750A Refrigerant Leak Detector

SKU CH-SV4E-KRMCV

Detects refrigerant leaks down to 0.2 oz/yr across 404A, 410A and 507 blends, powered by two alkaline C cells with a spare sensor included

  • Detects leaks as small as .2 oz/yr for early system protection
  • Works with 404A, 410A and 507 refrigerants for broad compatibility
  • Operates on 2 C alkaline batteries for portable job-site use
  • Includes replacement sensor to extend detector service life
  • Model 750A designed for all existing refrigerants and blends

Leak Detector for All Refrigerants

The TEST PRODUCTS INTL. 750A detects leaks as small as .2 oz/yr across all existing refrigerants and blends. It covers 404A, 410A and R-507 (AZ50) without needing separate heads. HVAC technicians use it for residential, commercial and automotive systems.

Battery Power and Sensor Swap

Two C alkaline batteries power the unit, so there is no cord to route in tight mechanical rooms. A replacement sensor is included, letting you restore factory sensitivity in minutes when the original element ages. No calibration gas or special tools are required for the swap.

Steady Response During Long Scans

The detector maintains its .2 oz/yr threshold throughout extended leak surveys on large rack systems. Sensor output does not drift downward as the probe warms during continuous use. Technicians can trace an entire circuit in one session without losing the smallest leaks.

Highlights

  • Detects leaks as small as .2 oz/yr for early system protection
  • Works with 404A, 410A and 507 refrigerants for broad compatibility
  • Operates on 2 C alkaline batteries for portable job-site use
  • Includes replacement sensor to extend detector service life
  • Model 750A designed for all existing refrigerants and blends

Specifications

BrandTEST PRODUCTS INTL.

Questions about this item

How do I confirm the 750A is detecting leaks at the rated .2 oz/yr sensitivity after turning it on?

Power the unit with two C alkaline batteries and pass the sensor over a known leak source; the audible and visual alarms should trigger when the leak reaches the stated .2 oz/yr threshold.

What comes in the box and what must I purchase separately to start using the detector?

The package includes the 750A detector and a replacement sensor; you need to supply two C alkaline batteries, which are not included.

Should I choose the 750A model for systems using 404A, 410A or 507 refrigerants?

Yes — the 750A is calibrated for all existing refrigerants and blends including 404A, 410A and 507, so it covers those applications.

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