Light/LUX Meters Archives - Obiat Electronics

Extech EA30 Easyview Wide Range Light Meter

Mike — Thu, 24 Mar 2016 08:31:55 +0000

The Extech EA30 EasyView Big Digit, Wide Range Light Meter
The Extech EA30 measures up to 40,000 foot-candles in four ranges and 400,000 lux in five ranges with ±3 percent accuracy, making it ideal for outdoor use. This light meter features a compact and rugged design with a large display and analogue bargraph to view trends.

Additional Features
Peak mode captures short light pulses to 100µs; and Relative function zeroes the sensor or can be used to display the difference from a reference value. Also has data hold, min/max, and auto power off functions.

What Is a Light Meter?
A light meter measures the amount of visible light, also known as illumination, in a given area. For many meter brands, including Extech, illumination is expressed in units of measure called Lux (for metric) and foot-candles (used in the US). To use an Extech light meter, the sensor is placed on a tabletop or other surface in the area to be measured and the light level reading is indicated on the meter’s display.

Specifications

General Specifications
Display	Multi-function 3-3/4 (3999) digit LCD with Bargraph indicator
Over range indication	LCD displays ‘OL’
Spectral response	CIE photopic (CIE human eye response curve)
Spectral accuracy	CIE V 2 function (f1 2 6%)
Measurement Repeatability	±2%
Temperature coefficient	±0.1% per °C
Sampling rate	13.3 times per second (bargraph); 1.3 times per second (digital display)
Photo detector	Silicon photo-diode with spectral response filter
Peak hold	Capture light peaks to 100uS
Operating conditions Temperature	0 to 40°C
Humidity	< 80% RH
Storage conditions Temperature	-10 to 50°C
Humidity	< 80% RH
Dimensions	150 x 72 x 33mm
Weight	Approx. 320g with battery
Low battery indication	“BT” appears on the LCD
Power supply	6 ‘AAA’ cells; Battery life approx 400 hours

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Extech HD400 Heavy Duty Light Meter

Mike — Thu, 24 Mar 2016 08:23:13 +0000

The Extech HD400 is a rugged light meter that measures a wide range to 4,000 Fc or 40,000 Lux using a precision silicon photo diode and spectral response filter with cosine and color corrected measurements. Peak mode (10 mS) captures highest reading, and Relative mode indicates change in light levels.

Additional Features

Backlit LCD display with 40-segment bar graph; peak mode (10 mS) captures the highest reading; relative mode indicates change in light levels; minimum/maximum; data hold; low battery indicator; and a built-in USB port for real-time monitoring and storage of light level data on a PC.

What Is a Light Meter?

A light meter measures the amount of visible light, also known as illumination, in a given area. For many meter brands, including Extech, illumination is expressed in units of measure called Lux (for metric) and foot-candles (used in the US). To use an Extech light meter, the sensor is placed on a tabletop or other surface in the area to be measured and the light level reading is indicated on the meter’s display. There are many different types of lighting that can be measured. the most common are: sodium, tungsten, mercury, and fluorescent. The following list shows common applications for each lighting type.

Sodium lighting: Highway, parking lots, security measurements
Tungsten lighting: Sunlight and incandescent lighting measurements
Mercury lighting: Highways, parking lots, stadiums
Fluorescent lighting: Indoor lighting for workstations and store display areas

Specifications
Fc Range	40, 400, 4000Fc
Lux Range	400, 4000, 40kLux
Accuracy	±5% rdg
Max Resolution	0.01Fc/0.1Lux
PC interface	USB
Dimensions	170 x 80 x 40mm)
Weight	390g

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Extech EA33 Easyview Light Meter with Memory

Mike — Thu, 24 Mar 2016 08:14:31 +0000

Elapsed Timer with Hold

In this mode, measurements are made while the countdown timer is running. When the timer reaches zero, the last measurement is held on the display

Stray Light Inhibit

This feature allows the user to measure light from one source while automatically factoring out the light from a secondary (stray) unwanted source.

Integral Illuminance Mode

Integral Illuminance is a luminous energy measurement based on the rate of flow of flux (expressed in lumen-seconds). The Model EA33 can also measure any photometric quantity on a time dependent basis. For example, the illuminance could be integrated over time to yield lux-hours (lx-h) or foot candle-hours (fc-h).

Extech EA33 Features:

EA33 Easyview Light Meter with Memory
Wide measurement range to 99,990Fc (999,900Lux) with resolution of 0.001Fc and 0.01Lux
Luminous intensity (candela) calculations
Store and recall up to 50 measurements, includes relative or real time clock stamp
Ripple function excludes the effect of stray light from the primary light source measurement
Auto Power off with disable feature
Multiple point average function
Timed-Hold, Relative in absolute value or % deviation, and Comparator function with high low alarms
Cosine and color corrected, CNS 5119 Class II
Complete with built-in stand, light sensor and protective cover with 90cm cable, protective holster, 6 AAA batteries, and carrying case

Extech EA33 Specifications

General Specifications
Display Counts	999,999 count LCD
Fc Range	9.999Fc, 99.99Fc, 999.9Fc, 9,999Fc, 99,990Fc
Lux Range	99.99Lux, 999.9Lux, 9999Lux, 99,990Lux, 999,900Lux
Max. Resolution	0.001Fc/0.01Lux
Basic Accuracy	±3%
Cosine & Color Corrected	Yes
Dimensions	150 x 72 x 33mm
Weight	320g

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EXTECH 45170CM 5-in-1 Environmental Meter

Mike — Sun, 28 Feb 2016 04:52:09 +0000

The Extech 45170CM measures Air Flow, Air Velocity, Relative Humidity, Temperature, and Light Level. This device is shipped fully tested and calibrated and, with proper use, will provide years of reliable service. Please visit our website (www.extech.com) to check for the latest version of this User Guide, Product Updates, and Customer Support.

Auto Power OFF

The meter will automatically turn off after 10 minutes if no keys are pressed during this period. Note that the Auto power off function is disabled in the Max/Min recording mode.

Battery Replacement

When the low battery icon appears or when the meter will not switch ON please replace the battery. The battery compartment is located on the back of the meter, secured by a Phillips head screw. Open the compartment and replace the 9V battery observing correct polarity. Do not switch the meter ON until the battery compartment is secured with the screw.

Extech 45170CM Specifications:

Speciﬁcations		Ranges	Max Resolution	Basic Accuracy
Air Velocity	ft/min	80 to 5910 ft/min	1ft/min	±3% FS
	m/s	0.4 to 30m/s	0.1m/s	±3% FS
	km/h	1.4 to 108km/h	0.1km/h	±3% FS
	MPH	0.9 to 67MPH	0.1MPH	±3% FS
	knots	0.8 to 58.3 knots	0.1knots	±3% FS
Air Flow	CFM (CMM)	0.01 to 1,908,400CFM (0.001 to 54,000CMM)	0.001CFM (CMM)
Light Level	Fc (Lux)	0 to 1860Fc (0 to 20,000Lux)	0.1Fc (1Lux)	±(5% rdg + 8 digits)
Relative Humidity		10 to 95%RH	0.1%RH	±4%RH of rdg
Temperature (Thermistor)		0 to 50°C	0.1°	±1.2°C
Temperature (Type K)		100°C to 1300°C	0.1°	±(1%+1°C) of rdg
Dimensions/ Weight		Meter: 156 x 60 x 33mm; Vane: 31mm / 160g

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Tenmars TM-202 Light Meter

slickadmin — Mon, 15 Feb 2016 01:12:07 +0000

Specifications
Sensor	Silicon photodiode and filter
Measuring Range	20, 200, 2,000, 20,000, 200,000 Lux
	20, 200, 2,000, 20,000 Foot-candle
Accuracy	±3% (calibrated to standard incandescent lamp 2856°K)
	±6% (other visible light source)
Angle Deviation from Cosine Characteristics	30° ±3%
	60° ±6%
	80° ±25%

General Specifications
Data Hold	Yes
DC Analog Output	Yes
Min/Max/Avg Hold	Yes
Zero Adjustment	Yes
Meter Dimensions	130mm (L) x 55mm (W) x 38mm (D)
Sensor Dimensions	80mm (L) x 55mm (W) x 25mm (D)
Weight (including battery)	250g

Ordering Information

Model Name	Description
Tenmars TM-202	Light Meter Included accessories: Battery, and Owner’s manual

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Tenmars TM-208 Solar, UVA and Light Meter

slickadmin — Mon, 15 Feb 2016 01:12:07 +0000

UVA Measurements
Measuring Range	40.0uW, 400uW, 4000uW, 20mW
Resolution	0.01uW, 0.1uW, 1uW, 0.01mW
Accuracy	±4% of reading
Wavelength	320nm to 400nm
Solar Power Measurements
Measuring Range	40uW/m², 400uW/m², 20.00W/m², 13,127,634Btu/ft²h
Resolution	0.01W/m², 0.1W/m², 1W/m² 0.01Btu/ft².h, 0.1Btu/ft².h, 1Btu/ft².h
Accuracy	±5% of reading
Wavelength	400nm to 1100nm
Illumination Measurement
Measuring Range	40, 400, 4,000, 40,000, 400,000 Lux 40, 400, 4,000, 40,000 Foot-candle
Resolution	0.01, 0.1, 1, 10, 100 Lux 0.01, 0.1, 1, 10 Foot-candle
Accuracy	±3% (Calibrated to standard incandescent lamp 2856°K)
Wavelength	400nm to 1100nm

General Specifications

USB Data-Logger

45,000 records

Data Output

USB PC serial interface

Sample Time

4 times/second

Power Supply

9 volt battery. NEDA 1604, IEC 6F22, JIS 006P

Battery Life

approx. 100 hours

Sensor Probe Dimensions

UVA Probe	28mm (H) x 49mm (Dia)
Solar Probe	80mm (L) x 55mm (W) x 25mm (D)
Illumination Probe	80mm (L) x 55mm (W) x 25mm (D)

Dimensions Main Instrument

130mm (L) x 55mm (W) x 38mm (D)

Weight

approx. 1200g

Ordering Information

Model Name	Description
Tenmars TM-208	Solar, UVA and Light Meter Included accessories: Instruction manual, 9-volt battery and carrying case

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Tenmars TM-209 LUX/FC LED Light Meter

slickadmin — Mon, 15 Feb 2016 01:12:07 +0000

Tenmars TM-209 Light Meter Specifications
Light Source Selecting	Tungsten/Daylight, Fluorescent, 0 to 9 select rating
Measuring Range	40, 400, 4,000, 40,000, 400,000 Lux
	40, 400, 4,000, 40,000, Foot-candle
Accuracy	±3% (calibrated to standard incandescent lamp 2856°K)
	and corrected LED day white-light spectrum.
	±6% (other visible light source)

General Specifications
Meter Dimensions	130mm (L) x 55mm (W) x 38mm (D)
Sensor Dimensions	80mm (L) x 55mm (W) x 25mm (D)
Weight (including battery)	250g

Ordering Information

Model Name	Description
Tenmars Model TM-209	LUX/FC LED Light Meter Included accessories: Battery, and Owner’s manual

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Tenmars TM-209M LUX/FC Multi-LED Light Meter

slickadmin — Mon, 15 Feb 2016 01:12:07 +0000

Specifications
Light Source Selecting	Tungsten/Daylight, Fluorescent, 0 to 9 select rating
Measuring Range	40, 400, 4,000, 40,000, 400,000 Lux
	40, 400, 4,000, 40,000, Foot-candle
Accuracy	±3% (calibrated to standard incandescent lamp 2856°K)
	and corrected LED day white-light spectrum.
	±6% (other visible light source)

L0	Standard light source ‘A’
L1	LED white day light
L2	LED red light
L3	LED amber (yellow) light
L4	LED green light
L5	LED blue light
L6	LED purple light
L7 to L9	Default standard light source ‘A’

General Specifications
Meter Dimensions	130mm (L) x 55mm (W) x 38mm (D)
Sensor Dimensions	80mm (L) x 55mm (W) x 25mm (D)
Weight (including battery)	250g

Ordering Information

Model Name	Description
Tenmars Model TM-209M	LUX/FC LED Light Meter Included accessories: Battery, and Owner’s manual

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Reed LM-81LX Compact Light/Lux Meter

slickadmin — Mon, 15 Feb 2016 01:11:53 +0000

How to use Reed LM-81LX

Zero Offset Adjustment of Light Function
Before sarts any light measurements, you should zero the light sensor prior to use in a dark environment. To achieve this, place the light sensor end of the meter under a desktop or flat surface to block any light. Pressing the “Unit/Zero Button” will set set the Lux Meter indication to zero. It is recommended that the zero be checked frequently using the above procedure.

Hold Function
To activate the Hold function pressing the “Hold Button”. Now the current value of the light measurement will freeze and “HOLD” symbol will show on the display. To cancel this function, ress again the “Hold button”.

Data Record
Start the Data Record function by pressing the “Max./Min. Button” once and the “REC” symbol will be shown on the display. Press the “ Max./Min. Button “ once and the “Max” symbol along with the maximum value will appear on the display. Press the “Max./Min. Button” again, the “Min” symbol along with the minimum value will appear on the display.

REED LM-81LX Specifications

Measuring Range	0 to 20,000 lux; 0 to 2,000 Fc
Resolution	1, 10 lux; 0.1, 1 Fc
Accuracy	±5% of reading
Sampling Time	1 time/second
Power Supply	Single 9V battery (included)
Dimensions	156 x 60 x 33mm
Weight	160g

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Reed SD-1128 Light Meter/Data Logger

slickadmin — Mon, 15 Feb 2016 01:11:53 +0000

How to use Reed SD-1128 Light Intensity Meter

Function selection: With this Reed SD-1128 Light meter, you can choose from 2 measuring functions: Light Meter or Type K/J Thermometer. With the meter powered-on, press and hold the Function Button. The display will flash “LIgHt”, for Light measurement, and “tP” for Type K/J Thermometer measurement. Release the Function Button to choose the displayed function.

Light Measurement: Always plug the Probe into the Probe Input Socket when the SD-1128 is off. Now, power on the meter by pressing the Power Button and Select the “ LIGHT “ function. Hold the Probe Handle and face the Probe Head against the measuring light source. The Display will show the light measurement value.

Zero Adjustment: To test if the instrument shows the measurements value correctly, while taking a Light Measurement, completely cover the light sensor. If the Display does not show value of zero, press and hold the Logger Button until the Display shows a zero value.

Type K/J Thermometer measurement: Select the “tP” function firstly and plug the optional Type K or J Thermocouple Probe into the Type K/J Probe Input Socket. The screen will display a “K”, meaning it is configured for a Type K thermometer probe. The measured temperature will now be displayed on the display screen.

Data Record (Max., Min. reading): With this SD-2228 you can record the maximum and minimum readings of any light measurements thanks to its data record function. Press the REC Button once to start the Data Record function and a “REC” symbol will appear on the display. With the “REC” symbol on the display.Press the REC Button once, and a ”REC. MAX.” symbol along with the maximum value will appear on the display. To delete the maximum value, press the Hold Button once and the display will show a “REC.” symbol only and execute the memory function continuously.Press the REC Button again, and a “REC. MIN.” symbol along with the minimum value will appear on the display. To delete the minimum value, press the Hold Button once, and the display will show a “REC.” symbol only and execute the memory function continuously.

REED SD-1128 Specifications

Measuring Range	2,000, 20,000, 100,000 lux 200, 2,000, 10,000 Ft-cd
Resolution	1, 10, 100 lux 0.1, 1, 10 Ft-cd
Accuracy	±(4% + 2 dgt)
Type K Temp. Range	-100.0 to 1300°C (-148.0 to 2372.0°F)
Resolution	0.1°C (0.1°F)
Accuracy	±(0.4% + 0.5°C (1.0°F))
Type J Temp. Range	-100.0 to 1200°C (-148.0 to 2192.0°F)
Resolution	0.1°C (0.1°F)
Accuracy	±(0.4% + 0.5°C (1.0°F))
Auto Sampling Time	1, 2, 5, 10, 30, 60, 120, 300, 600, 1800, 3600 seconds
Data Output	USB/RS232 PC computer interface
AC Output	0.5 Vrms corresponding to each range step
Output Impedance	600Ω
Power Supply	6 x 1.5V UM3/AA batteries
Dimensions	117 x 68 x 45mm
Weight	489g

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