XAR-L Digital Illuminance Meter

Products > Photometers & Light Meters > XAR-L Digital Illuminance Meter

XAR-L Digital Illuminance Meter

XAR-L is a portable precision instrument used to measure illuminance (lux, footcandle) in the field.

XAR-L Digital Illuminance Meter


XAR-L is a portable precision instrument used to measure illuminance (lux, footcandle) in the field. It is meet CIE photopic spectral response. The light sensor used in the meter is a very stable, long life silicon photo diode.


Features

Light-measuring levers ranging from 0 to 188,000 lux, 0 to 17,472 fc (footcandle) repeatedly.

Spectral sensitivity close to CIE photopic curve.

Accurate and instant response.

Data-Hold function for holding measuring values.

Unit display for easy reading.

Simultaneously display the measured values of lux and fc illuminance.

Maximum and minimum measurements.

Easy to read large backlight display

Trend chart display showing the past readings for illuminance (lux)

With temperature and humidity measurement

Only two buttons and easy to operate

Four AA Alkaline Batteries

 

Application

Lighting engineers and specifiers

R&D at light products manufacturers

Inspection of light sources at construction sites, government and educational facilities

Maintenance of lights in factories, offices, and hospitals

Electrical product manufacturers

Quality control of light sources at home

Agricultural and forestry industries

 

Device

1.        Photo detector

2.        LCD display

3.        Power button

4.        Function button

image.png

DISPLAYs

Normal Display

1.        Temperature

2.        Relative humidity

3.        Illuminance value in fc

4.        Battery gauge

5.        Illuminance value in lux

6.        Illuminance unit (lux)

7.        Maximum illuminance in lux and fc

8.        Minimum illuminance in lux and fc

image.png


SPECTRAL SENSITIVITY CHARACTERISTIC

To the detector, the applied photo diode with filter makes the spectral sensitivity characteristic almost meet C.I.E. (INTERNATIONAL COMMISSION ON ILLUMINATION) Photopic curve as the following chart described.

image.png

Specifications

Illuminance Specification

Measuring Range

0 to 188,000 lux, 0 to 17,472 fc

Spectral Response

CIE Photopic   (CIE human eye response curve)

Accuracy

±5% reading,   ±1 digit (<10,000Lux)

±10% reading,   ±10 digit (>10,000Lux)

Repeatability

±3%

Photo Detector

One silicon photo diode and spectral   response filter

 

Temperature Specification

Temperature Range

-10°C to 50°C (14°F to 122°F) display

Display Resolution

0.1°C (0.1°F)

Display Options

°C/°F switchable

Accuracy

±0.5°C (±0.9°F)

Response Time

5~30 seconds (device must equilibrate with environment)

 

RH Specification

Measurement   Range

0.0~99.9%RH

Display   Resolution

1%RH

Accuracy

±4.5%RH

Response Time

<8 seconds   for 63% of step change

 

General

Operating

-10°C to 50°C (14°F to 122°F), 0~90%   RH non-condensing

Storage

-10°C to 60°C (14°F to 140°F), 0~80%   RH non-condensing

Power Supply

Four AA Alkaline Batteries

Dimensions

75x165x25 mm (2.95x6.49x0.98”)

Weight

124 grams (4.37 oz.) without   batteries


RECOMMENDED ILLUMINATION

1fc=10.76Lux

Locations

Lux

fc

Office

Conference, Reception room

200~750

18~70

Clerical work

700~1,500

65~140

Typing drafting

1,000~2,000

93~186

Factory

Visual work at production line

300~750

28~70

Inspection work

750~1,500

70~140

Electronic parts assembly line

1,500~3,000

140~279

Packing work, Entrance passage

150~300

14~28

Hotel

Public room, Cloak room

100~200

9~18

Reception

200~500

18~47

Cashier

750~1,000

70~93

Store

Indoors Stairs Corridor

150~200

14~18

Show window, Packing table

750~1,500

70~140

Forefront of   show window

1,500~3,000

140~279

Hospital

Sickroom, Warehouse

100~200

9~18

Medical Examination Room

300~750

28~70

Operating room, emergency treatment

750~1,500

70~140

School

Auditorium, Indoor Gymnasium

100~300

9~28

Class room

200~750

18~70

Laboratory, Library, Drafting room

500~1,500

47~140

 


Previous: End