This document is the instruction manual of 61-686 light meter, which introduces the basic functions and usage methods of the light meter.
This document provides operating instructions for the IDEAL 61-686 light meter. It details how to turn the device on and off, select measurement units between Lux (Lx) and Foot-candles (Fc), and use features such as Data Hold and Max Hold. The manual also explains how to zero the instrument using the 0 ADJ button.
| Display | 2000 count LCD display |
|---|---|
| Sensor | Silicon photodiode and filter |
| Measuring Range (Footcandles) | 20, 200, 2000, 20000 Footcandles |
| Accuracy (Incandescent) | +3% |
| Accuracy (Other sources) | ±8% |
| Power Supply | 1 x 9V battery |
| Battery Life | Approximately 200 hours |
The meter displays measurements in Lux (Lx) and Foot-candles (Fc).
Turn on the meter with the sensor cap in place; if it does not read 000, adjust the 0 ADJ button with a small screwdriver.
The relative spectral sensitivity peaks at a wavelength of 550nm.