EXTECH 407026 User Guide

User's Guide

Heavy Duty Meter

Model 407026

Introduction

Congratulations on your purchase of the Extech Heavy Duty Light Meter. This light meter
offers selectable lighting types, data record/recall, relative display mode, and PC interface.
This professional meter, with proper care, will provide years of safe reliable service.

2

Specifications

Measurement

Range

Display

Resolution

Accuracy

General Specifications

Circuit Custom one-chip LSI microprocessor circuit
Display 3-1/2 digit (2000 count) LCD display with contrast adjustment
Measurement ranges LUX: 0 to 50,000 LUX (3 range); Fc: 0 to 5000 Fc (3 range);

Relative mode: 0 to 1999%
Data Hold Freezes displayed reading
Lighting Types Sodium, Daylight/Tungsten, Fluorescent and Mercury
Sensor Structure Cosine/color corrected photo-diode meets C.I.E.
Memory Store/Recall Records/Recalls Max/Min/Avg readings
Sample rate 0.4 seconds (approx.) per reading
Zero Adjust Push-button procedure
Auto Power Off After approx. 10 minutes
Data Output RS-232 PC serial interface (optional software/cable PN 407001)
Operating conditions 0 °C to 50 °C (32 °F to 122 °F); <80% RH
Power Supply 9V battery
Power consumption Approx. 5 mA DC. (approx. 200 hr battery life)
Weight 320 g (0.71 lbs.)
Dimensions Instrument: 180 x 72 x 32 mm (7.1 x 2.8 x1.3")

Sensor: 85 x 55 x 17.5 mm (3.3 x 2.2 x 0.7")

Range Specifications

LUX 2,000 LUX 0-1,999 LUX 1LUX ± (4% + 2 digits)

20,000 LUX 1,800-19,990 LUX 10 LUX
50,000 LUX 18,000-50,000 LUX 100 LUX

Foot Candles 200 Fc 0-186.0 Fc 0.1 Fc

2,000 Fc 167-1,860 Fc 1 Fc
5,000 Fc 1,670-5,000 Fc 10 Fc

Relative mode 0-1999% 1%

Note: The accuracy specification above applies to calibration performed using a precision
standard incandescent tungsten light source of 2856OK with meter on the tungsten setting.

Model 407026-EU V2.3 5/09

of full scale