PLMT21 - Luxmeter Pyle - Free user manual and instructions

Product Type	Digital Lux Meter (Light Meter)
Brand	Pyle
Model	PLMT21
Measurement Range	1 - 100,000 Lux
Accuracy	±4%+10 digits (≤10,000 Lux), ±5%+10 digits (>10,000 Lux)
Sampling Rate	2 times per second
Temperature Characteristic	±0.1% of full scale
Repeatability	±2%
Power Supply	9V battery (not included)
Battery Low Indicator	Yes, LCD icon when voltage drops to 6.5-7.0V
Operating Temperature	32°F - 104°F (0°C - 40°C)
Operating Humidity	10% RH - 90% RH
Reading Hold Function	Yes, slide switch to HOLD position
Range Selection	Three ranges: 2000 Lux (x1), 20000 Lux (x10), 100000 Lux (x100)
Display Type	LCD display
Dimensions (Approx.)	150 x 70 x 30 mm (estimated)
Weight (with battery)	Approx. 200 g
Cleaning Method	Clean sensor surface with moist cotton cloth
Overload Indication	LCD displays "1" - select higher range
Battery Replacement	User-replaceable 9V battery
Included Accessories	Light sensor cap, user manual

Frequently Asked Questions - PLMT21 Pyle

How do I turn on the Pyle PLMT21 light meter?

Push the slide switch to the desired measurement range. The meter will power on and display a reading.

What do the different range settings mean?

The slide switch selects ranges: 2000 Lux (display shows x1 Lux), 20000 Lux (x10 Lux), and 100000 Lux (x100 Lux). The display reading must be multiplied by the factor if applicable.

How do I use the reading hold function?

Slide the switch to the HOLD position. The LCD will show an 'H' icon and freeze the current reading. Slide back to release.

What does '1' on the display mean?

It indicates overload. The light level exceeds the current range. Select a higher range to get an accurate reading.

How accurate is the PLMT21?

Accuracy is ±4%+10 digits for readings up to 10,000 Lux, and ±5%+10 digits for readings above 10,000 Lux.

How do I know when to replace the battery?

When the battery voltage drops to 6.5-7.0V, the LCD displays a low battery icon. Replace the 9V battery promptly.

Can I measure very low light levels?

Yes, the meter measures from 1 Lux up to 100,000 Lux, covering dim indoor to bright sunlight conditions.

How should I clean the light sensor?

Use a moist cotton cloth to gently clean the sensor surface. Do not use abrasive cleaners or immerse in water.

Does the meter compensate for temperature changes?

The meter has a temperature characteristic of ±0.1% of full scale, ensuring stable readings over the operating temperature range (32°F to 104°F).

What is the repeatability of measurements?

The repeatability is ±2%, meaning consecutive readings under the same conditions will vary by no more than ±2%.

USER MANUAL PLMT21 Pyle

Precise and instant readout

Wide range of measurements

Reading hold function

Low battery indicator

Level range selection

Compact, light weight, with excellent operation

B. Operation instruction:

1. Install 9V battery into battery com-partment properly.

2. Push slide switch to turn on and select your desired measurement range:

2000 Lux LCD display: X1LUX 20000 Lux LCD display: X10 LUX 100000 Lux LCD display: X100 LUX

1. Before removing the light sensor cap, The LCD display should read, "000" LUX. Remove the sensor cap and take measurement, digital reading shows out immediately.

If the LCD display "1 "that means over load, please select higher range for measurement.

1. Push the slide switch to HOLD to hold the reading, LCD display H icon.

2. When the battery's power drop into

6.5-7.0V, LCD display icon

indicates low battery, please replace the battery.

1. After measurement, cover the sensor cap and turn off the unit.

2. Clean the surface of the sensor with a moist cotton cloth.

Specification:

Range: 1\~10,0000 LUX

Accuracy:

≤slant 10000 LUX ± (4% + 10 dgt) ≥slant 10000 LUX ± (5% + 10 dgt)

Sampling rate: 2 times/sec

Temperature characteristic: ±0.1%°F

Repeatability: +/-2%

Power supply: 9V battery

Operation temperature: 32°F to 104°F

Operation humidity:

10RH% to 90RH%

Figure A

Figure B