Extech 401021 Operating Manual

INSTRUCTION MANUAL

Models 401020 (Lux) and 401021 (Fc)

Light Meter Adapters

• Connects to standard DMM for

display

• Measures Tungsten,

Fluorescent, Sodium, Mercury,
and Daylight

• Status LED for power and low

battery

• Battery operated

1. INTRODUCTION

Congratulations on your purchase of Extech’s Light Adapter. This professional device, with
proper care, will provide years of safe reliable service.

1 401020 and 401021 Ver. 1.03 11/99

2. SPECIFICATIONS

2.1 Electrical Specifications

Accuracy
Sensor Exclusive photo diode & color correction filter

Operating
Temperature/humidity
Power Supply 006P DC 9V battery
Power Consumption Approx. 6 mA DC
Low battery indication Status LED on Front panel of Adaptor
Dimensions / Weight 3.9x1.9x1" (100x50x25mm) / 0.33 lbs. (150g)

2.2 Range Specifications

401020 401021
Range
1 0 to 2000 Lux 0.1mV per 1 Lux 0 to 200 Fc 1mV per 1 Fc
2 2000 to 20,000 Lux 0.1mV per 10 Lux 200 to 2000 Fc 0.1mV per 1 Fc
3 20k to 50k Lux 0.1 mV per 100 Lux 2000 to 5000 Fc 0.1mV per 10 Fc

2.3 Frequency Spectrum

3. FRONT PANEL DESCRIPTION

1 Power ON status LED

2 Low battery status LED

3 Power ON / Range select switch

4 Light sensor

5 Meter to sensor connect cable

6 DMM banana connector plugs

± (5% + 1mV)

Measurement

Output to DMM Measurement Output to DMM

spectrum designed to meet C. I. E.
32oF to 122oF (0C to 50oC) / <90% RH

2 401020 and 401021 Ver. 1.03 11/99