US 1.888.950.5557 | CN 86.1580.215.4221


US 1.888.950.5557 | CN 86.1580.215.4221

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Handheld Corona Camera

A compact handheld corona detecting camera for indoor use. Scalar is a visible-blind camera that fits artificially lit workspaces such as high voltage laboratories and workshops. Scalar is used for non-destructive PD detection tests performed on hi/med voltage installations such as switchgear, motors, generators etc. Scalar provides clear visual information about discharges that are invisible otherwise to the human eyes.

Scalar detects invisible ultraviolet photons that result from partial discharge processes and translates them into visible blobs. Scalar uses 2 optical channels that complement each other namely, UVb in the range of 310-320 nm and visible range. The camera is equipped with an optical filter, attuned to corona peak, that filters out non corona PD light. The transmitted corona PD light is then superimposed on the discharging object, displaying a true portray of the faulty specimens. DayCor® Scalar is a compact handheld camera with a wide field of view for testing nearby objects. The camera records video clips and snapshots of the specimens storing them onto an onboard SD card. Testing results are instantaneous and pinpointed DayCor® Scalar is an excellent cost effective inspection solution.

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Practical, Powerful, Precise, Affordable

Features that deliver results

Discover hidden faults and see them on a wide deluxe transmissive LCD, with backlight of 600 nits, and resolution of 800X480 px sharp and clear. Record findings and use them as evidence.  Store video clips and still pictures onto a removable flash card and review them again to compare and trend. In darker compartments Scalar has it own built-in LED flashlight, while the command buttons are shining to ease their selection.

Small dimension big value

Get significant information, fast, simply and clearly. Wide field of view enables testing in narrow spaces. Operation is intuitive operation, without efforts, very user-friendly interface, fast response, and clear corona events manifestation. Turn on, aim, shoot and store. Neither calibrations nor any further adjustments are needed throughout its life.


DayCor® Scalar allows configuring multiple operation profiles to accommodate for different conditions. During inspection it is readily possible to switch between profiles and select the most appropriate one.  Scalar is designed to maximize ease of operation. It is operated using a featured menu and a set of command buttons.

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Cost Effective Solution Dedicatd to Workshops

“All we asked for was to be able to ensure that we have accomplished the refurbishing the old S. generator. We reckon that our customer trusts us and it is important to maintain our reputation . We looked for a tester that will enable us to see if there are any PD spots that we missed, but this tester should be reliable, not be intrusive, be used in a lit room and should allow testing in rated voltage. We should not risk overloading nor straining the old machine. We found Ofil’s Scalar. A very small smart camera that provides all that we wanted, for a fair price. Indeed, for the price we paid we got a fine piece of testing equipment”

H. K. B.  PE Eng. MD. USA

“We manufacture diamond coils for various motors/generators, but our customers (particularly for hydro generators) are asking for PD to be tested in our internal factory tests, including corona discharge.  Scalar works as expected and is simple to use, so we’re pleased overall”

T.M. Preformed Windings, UK, June 2021

Outstanding Features

Products Catalog

Ofil offers a variety of solutions to match budgets, needs, applications, locations or any other consideration. Knowing the main aspects of each model of corona camera will  facilitate the selection process. 

Need help? Call our award-winning support team 1.888.950.5557

Ofil develops and‭  ‬manufactures UV Bi-spectral optical and digital inspection systems with embedded proprietary patented Solar Blind technology‭. ‬Ofil aims at providing precise solutions for science‭, ‬industry and environmental wellness‭. ‬Ofil owns the brand‭ ‬name DayCor®‭ ‬that stands for Daytime Corona detection‭.  ‬


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Handheld Corona Camera

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