Extech 407026 Heavy Duty Light Meter

Fits plant and facility lighting surveys that need a heavy-duty Fc/Lux meter with four lighting-type corrections (Tungsten/Daylight, Fluorescent, Sodium, Mercury), ±4% full-scale class accuracy, and optional RS-232 datalogging — not a smartphone lux app.

Key advantages

• Fc / Lux ranges — Fc 200.0 / 2000 / 5000 Fc; Lux 2000 / 20,000 / 50,000 Lux.
• Accuracy / lighting types — ±4% full scale; corrections for Tungsten/Daylight, Fluorescent, Sodium, Mercury.
• Functions — Data Hold, Min/Max/Avg, % differential, ZERO recal; cosine- and color-corrected photodiode sensor.
• PC path — RS-232; optional DAQ / datalogger (>8000 readings).
• Kit / form — 1× 9V battery; sensor on 1.1 m cable; holster with stand; 178 × 74 × 33 mm, 726 g.

Typical applications

• Workplace and warehouse illuminance surveys in foot-candles or lux.
• Sodium/mercury/fluorescent plant lighting checks where lighting-type correction matters.
• Commissioning and maintenance of area lighting with Min/Max/Avg and % differential to a reference.
• Optional PC capture or >8000-reading datalogger modules when a survey needs recorded evidence.

Selection guide

• Range band — Confirm expected Fc/Lux sits in 200.0 / 2000 / 5000 Fc / 2000 / 20,000 / 50,000 Lux before RFQ.
• Lighting type — Pick Tungsten/Daylight, Fluorescent, Sodium, or Mercury so the ±4% FS class holds for that source.
• PC / memory — Built-in RS-232; optional DAQ software (407001) or battery datalogger (380340, >8000 readings) if you need stored traces.
• Form factor — Heavy-duty handheld 178 × 74 × 33 mm; remote sensor on ~45 in (1.1 m) cable with protective cover.
• Calibration — Base 407026 vs 407026-NIST when a NIST certificate is required.

Common mistakes

• Leaving lighting type on Tungsten/Daylight when the space is sodium or mercury — OEM accuracy is tied to the selected lighting type.
• Expecting a built-in multi-thousand-point logger — onboard is RS-232; the >8000-reading module is optional (380340).
• Treating ±4% FS as a lab photometer class without matching range and lighting-type setting.
• Ordering for continuous panel monitoring — this is a handheld survey meter with remote sensor, not a permanent lux transmitter.

When to RFQ / what to tell us

1. Primary unit (Fc vs Lux), expected range band, and dominant lighting type (Tungsten/Daylight / Fluorescent / Sodium / Mercury).
2. Need for 407026-NIST, optional DAQ (407001), or datalogger module (380340).
3. Quantity, ship-to, and whether spare soft/hard case (409997 / 140001) should ship with the meter.

Request a Quote · Get selection help

Specs

FAQ

Q: Fc or Lux on 407026? A: Both — Fc ranges 200.0 / 2000 / 5000; Lux 2000 / 20,000 / 50,000. State the unit and expected band on the RFQ.

Q: What do the lighting-type settings do? A: Tungsten/Daylight, Fluorescent, Sodium, and Mercury corrections keep the ±4% FS class matched to the source — pick the type that matches the space.

Q: What should I send for a quote? A: Unit (Fc/Lux), range, lighting type, NIST/DAQ need, quantity, ship-to. Compatible with systems using Extech 407026 — we do not claim authorized-dealer status.

Links

• Test & measurement instruments · Test & measurement buying guide
• Request a Quote · Get selection help