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Extech
Extech SDL400 Light Meter / Datalogger
Quote on request
No online payment · add lines to RFQ BOM
SDL400: to 100k lux / 10k Fc; ±4%; SD Excel log; Type K/J. RFQ.
Download datasheet PDF
RFQ cart holds BOM lines only. Submit for engineering quote.
Key parameters
Accuracy
±4% of reading (Fc and Lux)
Supply
6 × AA batteries; optional AC adaptor
Display
Large backlit LCD; MIN/MAX; Data Hold; Auto power off (disableable)
Fc Range
200 / 2000 / 10,000 Fc; resolution 0.1 Fc
Lux Range
2000 / 20,000 / 100,000 Lux; resolution 1 Lux
Temperature Input
Type K −148 to 2372°F (−100 to 1300°C); Type J −148 to 2192°F (−100 to 1200°C); ±(0.4% + 1.8°F/1°C)
Fits illuminance surveys with logging where you need an Extech SDL400—ranges to 100,000 lux / 10,000 Fc, cosine/color-corrected sensor, ±(4% + digits) to 2856 K tungsten, and SD-card Excel datalogging.
Key advantages
- Lux — 2,000 / 20,000 / 100,000 lux
- Fc — 200 / 2,000 / 10,000 Fc class
- Accuracy — ±(4% + 2 dgt) lux to 2856 K tungsten
- Sensor — Cosine and color-corrected silicon photodiode
- Memory — 99 manual; ~20M on 2G SD; Type K/J input
Typical applications
- Workplace lighting audits.
- Logged lux/fc studies.
- Maintenance illuminance checks.
Selection guide
- Sample rate
- TC need
- NIST option
Common mistakes
- Leaving sensor cap on.
- Applying tungsten accuracy to all spectra without judgment.
- Wrong lux/fc unit.
When to RFQ / what to tell us
- NIST option, quantity.
- Ship-to.
Request a Quote · Get selection help
Specs
| Spec | Value |
|---|---|
| SKU | 35648 |
| Brand | Extech |
| Model | SDL400 Light Meter |
| Product type | Light Meter |
| Type | Light meter / SD datalogger (Extech SDL400) |
| Lux | 2,000 / 20,000 / 100,000 lux; ±(4% + 2 dgt) to 2856 K tungsten |
| Fc | 200 / 2,000 / 10,000 Fc class |
| Sensor | Cosine and color-corrected silicon photodiode |
| Memory | 99 manual; ~20M on 2G SD card |
| Tc | Type K/J thermocouple input |
Documents
FAQ
Q: Max lux? A: 100,000 lux.
Q: SD logging? A: Yes — Excel-format on SD card.
Q: What should I send for a quote? A: Quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Accuracy | ±4% of reading (Fc and Lux) |
| Supply | 6 × AA batteries; optional AC adaptor |
| Display | Large backlit LCD; MIN/MAX; Data Hold; Auto power off (disableable) |
| Fc Range | 200 / 2000 / 10,000 Fc; resolution 0.1 Fc |
| Lux Range | 2000 / 20,000 / 100,000 Lux; resolution 1 Lux |
| Temperature Input | Type K −148 to 2372°F (−100 to 1300°C); Type J −148 to 2192°F (−100 to 1200°C); ±(0.4% + 1.8°F/1°C) |
| Datalogging | SD card Excel format; 99 manual + up to 20M records on 2G SD; sample rate 1–3600 s |
| Sensor | Cosine and color-corrected silicon photodiode with spectral response filter |
| Form Factor | 7.2 × 2.9 × 1.9 in (182 × 73 × 47.5 mm); 16.2 oz (475 g) |
| Included | Light sensor with 45 in cable and cover, SD card, hard case, batteries |
| Family | Extech SDL400 |