HTC INSTRUMENT LX-10A Digital Lux Meter User Manual
- June 12, 2024
- HTC INSTRUMENT
Table of Contents
LX-10A
DIGITAL LUX METER User manual
Before using the instrument,please read this manual carefully.and save it well for future using.
Introduction
Visible light emitted by fluorescent lamp, metal halide lamp, high voltage
sodium lamp or incandescent lamp can be measured.
One lux is the light received on the surface of a candle with a vertical
intensity of 1 meters and an area of 1 square meters.
One FC is the light received on the surface of a 1 inch square foot at a
distance of 1 feet from a candle with a light intensity…
- Protective shield light sensor
- Display LCD
- Function key
Key Description
| Power On/Off key
---|---
| Data hold/ backlight key
| Max/Min Key
| Temperature unit selection key
| unit selection key
Operation
Taking measurements
- Prees the button to turn power on.
- Remove the protective cap from the sensor.
- Place the sensor in a horizontal position at the measurement location.
- Read the light level on the display.
Caution:
To protect the lens from scratches, keep the protective cap on the sensor whenever the unit is not in use.
Data hold
Press the button to freeze the displayed reading. The “H’ hold icon wil appear
on the display.
Press the button again to retur to normal operation
MAX/MIN function
- Press the button once to put the meter in MAX/MIN mode. The meter will now display the highest reading that occurs while the function is enabled. The *MAX” icon will appear in the display.
- Press the button again to display the lowest reading that occurs while the function is enabled. The “MIN” icon will appear in the display.
- Press the button again to toggle between the MAX and MIN readings.
- To exit the MAX/MIN mode and return to the normal real time display, press and hold the button (2 seconds) until the MAX and MIN icons disappear.
Units of measure
Press the UNIT button to select the unit of measure. “LUX” or “FC” will appear
in the display.
Power ON and Automatic Power Off
- Press the button to turn the meter on.
- Press the butoon 1o th . Press the utton again to turn the meter off.
- The meter has an automatic power off feature that conserves battery energy. After 10 minutes the meter automatically shuts off.
- To press and hold the button to turn the meter on, the auto power off function will be cancelled. And the icon disappears.
Backlight function
Press and hold for about 2 seconds to turn on the backlight, then press and
hold again to turn off the backlight.
Specifications
Range / Accuracy| LUX: 1000,10000, 200000
FC: 100,1000 , 20000
---|---
±(3%+5 words) (at 2854°K incandescent lamps)
±(6%+5 words ) others Cosine angle deviation characteristics
30° ±2%; 60° ±6%;
80° ±25%
Sensor| Silicon photo-diode and spectral response filter
Operating
conditions| Temperature:0 — 40°C .
Humidity:<80%RH
Altitude :<2000m
Storage conditions| Temperature:-10 — 50°C .
Humidity:<80%RH
Sampling rate| Approx. 2 times per second
Spectral| 320~730nm
Auto power off| 10 minutes
Power| 3x 1.5VAAA batteries
Temperature & Humidity specification:
Temperalure| Measuring range| -20.0°C~60.0°C(-4.0
I’~140.0°1″)
---|---|---
Acuracy| 0.0C~45.0C(327F~1
13F) £1.0C/2.07F
Other: £1.5C/3.0F
Humidity| Measuring range| 0.0% ~99.9%RH
Accuracy| 20%~80%:+5.0RH
Other: +6.0RH
Maintenance
Battery Replacement
When the battery voltage is low the symbol will appear on the display.
Replace the three (3) 1.5 ‘AAA’ batteries by removing the rear (center)
battery compartment screw and accessing the battery compartment.
Observe polarity when placing the batteries in the compartment. Ensure that
the compartment cover is securely fastened when finished.
Cleaning and storage
Caution
To avoid damaging the instrument housing, do not use corrosive or solvent
to clean the instrument.
The white plastic sensor dome should be cleaned with a damp cloth when necessary Store the meter in an area with moderate temperature and humidity (refer to the operating and storage range in the specifications chart earlier in this manual).