Collection: Sound and Light Meters

The HHF81 air velocity meter can measure air flow, humidity, temperature and light. The built-in microprocessor circuit assures excellent performance and accuracy. The HHF81 can track the maximum and minimum values along with current readings. The HHF81 displays the flowrate in your choice of knots, metres per second, kilometres per hour, miles per hour, feet per minute.

The HHF81 relies upon a low-friction ball bearing mounted wheel design to provide high accuracy at high and low air velocity. The impeller provides excellent accuracy (±3 to 4%) and the ability to measure the slightest breeze (0.3 M/S). For temperature readings, the HHF81 has an internal thermistor or is compatible with any Type K thermocouple with a mini plug, accurate to ±1°C + 1% of reading. 

The humidity sensor measures to 95% relative using a high precision thin-film capacitance sensor with fast response to humidity changes. 

The Light measurement uses an exclusive photo diode and colour correction filter light sensor. 

Specifications

Air Velocity

• Measurement Range: 80 to 5910 ft/min, 0.4 to 30.0 m/s, 0.9 to 67.0 mph, 1.4 to 108.0 km/hr, 0.8 to 58.3 knots, 0.8 to 58.3 knots
• Resolution: 1 ft/min, 0.1 m/s, 0.1 mph, 0.1 km/hr, 0.1 knots
• Accuracy: 20 m/s : 3% FS,
• >20 m/s : 4% FS
• Temperature (Internal Thermistor) Measurement Range: 0 to 50°C (32 to 122°F) 
• Resolution: 0.1°C/°F
• Accuracy : ±1.2°C (±2.5°F)
• Operational Temperature: 0 to 50°C (32 to 122°F)
• Temperature (External Type K)
• Measurement Range: -100 to 1300°C (-148 to 2372°F)
• Resolution: 0.1°F/°C
• Accuracy: ±(1% + 1°C) of rdg [±(1% + 2°F) of rdg]

Humidity

• Measurement Range: 10 to 95%
• Resolution: 0.1%
• Accuracy: < 70% RH : ±4% of rdg, 70% RH ± (4% rdg + 1.2 % RH)
• Operational Humidity Max.: 80% RH

Light Lux

• Measurement Range: 0 to 2200 Lux, 1800 to 20000 Lux, 0 to 204.0 Fc, 170 to 2000 Fc
• Resolution: 1 Lux, 10 Lux, 0.1 Ft-cd, 1 Ft-cd
• Accuracy: ±5% rdg ± 8 dgt
• Overange Display: “—-”
• Battery: 9V (included)
• Power Consumption: Approx DC 6.2 mA
• Weight: 160 g battery included
• Dimension: 156 x 60 x 33 mm

These light level meters are portable, and simple to use with one hand. It uses an accurate visible compensation filter f*1 to provide the best possible results.

HHLM-2 Portable Light Meter

• Range: 20 to 20000 Lux/fc
• Highly accurate diffuser f 2 < 2% up to 150°
• PEAK/Data Hold function
• Ambient Operating Range 0 to 50°C
• Backlit LCD Display

HHLM-1 Portable Light Meter

• Range: 20 to 200000 Lux
• Highly accurate f 2 < 2% up to 150°
• MAX/Data Hold function
• Ambient Operating Range 0 to 50°C
• Backlit LCD Display

HHLM-1MV Portable Light Transducer† (no display)

• Range: 20 to 200000 Lux
• Analog output function
• Highly accurate diffuser f 2 < 3% up to 150°
• Ambient Operating Range 0 to 50°C

† For Display, Plug Unit into any OMEGA® HHM290 Series Multimeter. Consult Manual for Instructions.

The handheld light meter is portable and can be used simply with one hand. It is pocket size, and has a battery life of over 300 hours. The handheld light meters comes complete with operator’s manual, magnet hanger, and 4 “AAA” batteries.

Specifications

• Sensor: Silicon photodiode
• Range: 20 lux, 200 lux, 2000 lux, 20000 lux, 20 fc, 200 fc, 2000 fc, 20000 fc
• Resolution: 0.01 lux, 0.01 fc
• Accuracy: ± (3% FS +1 digit) using a 2856 K standard light source
• Display: 3¹/₂ digit LCD with a maximum reading of 1999
• Low Battery Indication: An icon is displayed when the battery voltage drops below the operating level
• Battery Life: 300 Hrs. typical use
• Operating Environment: 0 to 50°C (32 to 122°F), <70% relative humidity
• Storage Temperature: -20 to 60°C (-4 to 140°F), 0 to 80% R.H. with battery removed from meter
• Accuracy: Stated accuracy at 23°C ± 5°C (73°F ±9°F), <75% relative humidity
• Dimensions: 155 H x 48 W x 24 mm D (6 x 5.8 x 4.9″)
• Weight: Approx. 81 g (3 oz.) including battery
• Battery: 1.5V x 4 pcs AAA size, included
• Battery Life: 300 hours, typical use

Handheld light meters and optical RPM meters perfect for environmental applications. Measure light intensity and non-contact optical RPM with accuracy and reliability.

Light Meter – HHC230

Specifications

Range: 0 to 200,000 lux; 0 to 18,580 fc

Accuracy: ±3% rdg + 10 digits (based on a light source 2856K)

Resolution: 1 lux (0 to 19999), 10 lux (20,000 to 200,000), 1 fc (0 to 18,580)

Units: lux/fc

Operating Temperature: 0 to 50°C (32 to 122°F)

Typical Light Intensity Ranges (lux):

• Design/General Office: 1500 to 2000
• Meeting Room: 300 to 750
• Precision Assembly: 1500 to 3000
• R&D Department: 750 to 1500
• Packing/Measurement/Hallway: 300 to 750

Power: 2 “AAA” batteries (included)

Battery Life: 180 hours typical with alkaline batteries

Dimensions: 24.7 x 50.9 x 132.9 mm (0.98 x 2.0 x 5.2″)

Weight: 116 g (4.0 oz)

Comes complete with batteries, carrying strap, and protection cap.

Optical RMP Meter – HHC250

Specifications

Range 100.0 to 99999

Accuracy: ±0.02% of rdg + 1 digit

Resolution:

• 0.1 rpm: 100.1 to 19999.9 rpm
• 0.1 rps: 1.7 to 333.3 rps
• 1 rpm: 20,000 to 99,999
• 1 rps: 334 to 1666 rps

Units: rpm/rps

Operating Temperature: 0 to 50°C (32 to 122°F)

Power: 2 “AAA” batteries (included)

Battery Life: 30 hours typical with alkaline batteries

Dimensions: 24.7 x 50.9 x 132.9 mm (0.98 x 2.0 x 5.2″)

Weight: 110 g (3.9 oz)

Comes complete with batteries, carrying strap, protection cap, and reflective tape (5 each).

The HHLM112SD has a large backlit display for easy viewing of light levels. Comes complete with light probe with protective cover and can measure a wide range of either LUX or footcandles. Applications include indoor light and work area lighting monitoring and verification useful for facilities engineers, building maintenance personnel and anyone who wants to measure illuminance.

Ideal for Industrial and commercial photography and videography applications. Because it is microprocessor-based, the HHLM112SD can make full use of the portability, reliability and large storage capacities that SD memory cards offer. Measurements can be made automatically at any sampling rate between one second and one hour. After the instrument timestamps and stores the measurements on an SD card plugged into it, the user can remove the card and plug it into a laptop or desktop computer either directly or via a USB card reader. The logged data is stored on the card as files that can be opened by Microsoft’s Excel application. Unit accepts SD memory cards as large as 16 GB. Temperature measurements are made using a Type K or J thermocouple. The HHLM112SD is powered by 6 “AA” alkaline batteries or an optional AC adaptor.

Specifications

Display Type: Liquid-crystal with green backlight

Display Size: 52 x 38 mm (2.05 x 1.5″) Measurement Full-Scale Ranges: 

• 0 to 1999 LUX (0 to 186 footcandle (ft-cd) 
• 1800 to 19,990 LUX (167 to 1860 ft-cd 
• 18,000 to 99,900 LUX (1670 to 9290.7 ft-cd

Measurement Accuracy: 

• ±4% of full-scale (FS) reading + 2 digits for all LUX readings and ft-cd readings at 200 ft-cd FS 
• ±4% of FS reading + 2 ft-cd at 2000 ft-cd FS 
• ±4% of FS reading + 20 ft-cd at 20,000 ft-cd FS

Measurement Resolution: 

• 1 LUX at 2000 LUX FS 
• 10 LUX at 20,000 LUX FS 
• 100 LUX at 100,000 LUX FS 
• 0.1 ft-cd at 200 ft-cd FS 
• 1 ft-cd at 2000 ft-cd FS 
• 10 ft-cd at 10,000 ft-cd FS 

Thermocouple Input Ranges and Accuracy:

• Type K: -50 to 1300°C (±0.4% + 0.5°C) -50.1 to -100°C (±0.4% + 1°C) -58 to 2372°F (±0.4% + 1°F) -58.1 to -148°F (±0.4% + 1.8°F)
• Type J: -50 to 1200°C (±0.4% + 0.5°C) -50.1 to -100°C (±0.4% + 1°C) -58 to 2192°F (±0.4% + 1°F) -58.1 to -148°F (±0.4% + 1.8°F)

Sampling Time Options: 1 second to 1 hour

Storable/Recallable Readings: Max/min

SD Card Capacity: 1 to 16 GB

Operating Temperature: 0 to 50°C (32 to 122°F)

Operating Relative Humidity: 0 to 85%

Power Supply: 6 “AA” Alkaline batteries or optional 9 Vdc AC adaptor

Power Consumption: 6.5 mA DC (normal operation, with backlight off and SD card not saving data); 30 mA DC with backlight on

Dimensions: 177 x 68 x 45 mm (7 x 2.7 x 1.9″)

Weight: 489 g (1.08 lb)

The HHLM1337 has a large display for easy viewing of light levels. It can measure a wide range of either LUX or footcandles. Applications include indoor light and work area lighting monitoring and verification. Useful for facilities engineers, building maintenance personnel and anyone who wants to measure illuminance.

SPECIFICATIONS 

• Range: 20/200/2000/20,000 LUX/FC 
• Accuracy: ±3% rdg ±0.5% FS; ±4% rdg ±10 digits for >10,000 LUX/FC 
• Resolution: 0.01 LUX 
• Sensor Dimensions: 114.3 x 61.0 x 25.4 mm (4.5 x 2.4 x 1″) 
• Unit Dimensions: 188.0 x 63.5 x 25.4 mm (7.4 x 2.5 x 1″) 
• Power Source: 6 “AAA” batteries (included) 
• Weight: 225 g (0.5 lb)

The HHSL402SD is a generalpurpose handheld instrument that measures the noise level of an environment or the sound level produced by a piece of machinery. Using an integrated 13 mm (0.5″) condenser microphone, the meter can measure sound levels from 30 to 130 dB with a resolution of 0.1 dB and show the results on a front-panel liquid-crystal display. Several features and capabilities enhance the meter’s versatility.

Among them are autoranging, the ability to hold readings and display maximum and minimum readings, and user-settable measurement parameters such as frequency weighting (using the “A” and “C” standards) and time weighting (fast or slow). Because it is microprocessor-based, the HHSL402SD can make full use of the portability, reliability and large storage capacities that SD memory cards offer.

Measurements can be made automatically at any sampling rate between one second and one hour. After timestamping and storing the measurements on an SD card plugged into the instrument, the user can remove the card and plug it into to a laptop or desktop computer either directly or via a USB card reader. The data points are stored on the card as files with the .xls extension, which can be opened by Microsoft’s Excel application. The HHSL402SD has a backlit 64 mm (2.5″) diagonal display and is powered by six “AA” alkaline batteries or an optional 9V AC/DC adaptor.

Specifications

Display Type: LCD with green backlight

Display Size: 52 x 38 mm (2.05 x 1.5″)

Parameter Measured: dB

Frequency Range: 31.5 Hz to 8 kHz

Measurement Range: 30 to 130 dB in autoranging mode

User can also select fixed range of 30 to 80 dB, 50 to 100 dB, or 80 to 130 dB

Measurement Weighting:

•     By Frequency: Frequency weighing uses “A” or “C” standard
•     By Time: Time weighting is fast or slow (200 or 500 ms response time)

Measurement Accuracy: With “A” frequency weighting: ± 3.5 dB @ 31.5 Hz, 2.5 dB @ 63 Hz, 2 dB @ 125 Hz, 1.9 dB @ 250 Hz, 1.9 dB @ 500 Hz, 1.4 dB @ 1 kHz, 2.6 dB @ 2 kHz, 3.6 dB @ 4 kHz, 5.6 dB @ 8 kHz

Measurement Resolution: 0.1 dB

Data Logging Sampling Time: 1 second to 1 hour

Settable Parameters: Date, time, auto power off, beep sound, sampling time, decimal point or comma decimal division, “A” or “C” frequency weighting, fast or slow time weighting

Storable/Recallable Readings: Maximum, minimum

SD Card Capacity: 1 to 16 GB

Operating Temperature: 0 to 50°C (32 to 122°F)

Operating Relative Humidity: 0 to 85%

Power Supply: Six alkaline “AA” batteries or optional 9 Vdc AC adaptor

Power Consumption:

• 8 mADC (normal operation, with backlight off and SD card not saving data)
• 30 mADC with backlight on and card saving data
• 44 mADC with backlight on and card saving data

Dimensions of Meter: 245 x 68 x 45 mm (9.65 x 2.68 x 1.77″)

Weight of Meter: 489 g (1.08 lbs)

Many industrial and commercial applications require or can benefit from measurement of the intensity of UVA and/or UVC light. Among them are welding (to minimize exposure to “blue light” radiation), UV sterilization of food, photochemical matching, erasure of electrically programmable read-only memory (EEPROM) chips, production of graphic arts products, exposure of photoresists, and curing of inks, adhesives and coatings.

OMEGA’s HHUV254SD has the performance and features needed to satisfy the most demanding aspects of these applications. For example, it combines the capabilities of UVA (black light in the long-wave 365 nm band) and UVC (short waves in the 254 nm band) measurement in one instrument. The meter also can measure temperature with a Type K or J thermocouple. A UVA probe and a UVC probe are supplied with the instrument.

Because it is microprocessor-based, the HHUV254SD data logger can make full use of the portability, reliability and large storage capacities that SD memory cards offer. Measurements of light intensity or temperature can be made automatically at any of 11 sampling rates between one second and one hour. After time-stamping and storing the measurements on an SD card plugged into the instrument, the user can remove the card and transfer the measurements to a laptop or desktop computer either directly or via a USB card reader. The HHUV254SD has a backlit 2 1/2″ diagonal display and is powered by 6 “AA” alkaline batteries or an optional 9 Vdc AC adaptor.

Specifications

Display Type: LCD with green backlight

Display Size: 52 x 38 mm (2.05 x 1.5″)

UV Light Types Measured: UVA, UVC

Measurement Range: 240 to 390 nm

Measurement Accuracy: ±4% of full scale reading + 2 digits

Full-Scale Autoranges: 2 mW/cm2 and 20 mW/cm2

Storable/Recallable Readings: Max, min

Data Logging Sampling Time: 1 sec to 1 hr

SD Card Capacity: 1 to 16 GB

Settable Parameters: Date, time, auto power off, beep sound, temperature unit (°C or °F), sampling time, thermocouple Type (K or J), decimal point or comma

Operating Temperature: 0 to 50°C (32 to 122°F)

Operating Relative Humidity: 0 to 85% 

Thermocouple Input Ranges and Accuracy:

•     Type K: -50 to 1300°C (±0.2% + 0.5°C) -50.1 to -100°C (±0.2% + 1°C) -58 to 2372°F (±0.2% + 1°F) -58.1 to -148°F (±0.2% + 1.8°F)
•     Type J: -50 to 1200°C (±0.2% + 0.5°C) -50.1 to -100°C (±0.2% + 1°C) -58 to 2192°F (±0.2% + 1°F) -58.1 to -148°F (±0.2% + 1.8°F)

Power Supply: 6 Alkaline “AA” batteries or optional 9 Vdc AC adaptor

Power Consumption:

• 6.5 mADC (normal operation, with backlight off and SD card not saving data)
• 30 mADC with baclight on

Dimensions:

• Meter: 177 H x 68 w x 45 mm D (6.97 x 2.68 x 1.77″)
• UVA Probe Head: 45 (diagonal) x 32 mm L (1.77 x 1.26″)
• UVA Probe Handle: 24 (diagonal) x 125 mm L (0.94 x 4.92″)
• UVC Probe: 38 (diagonal) x 25 mm L (1.50 x 0.98″)

Weight:

• Meter: 351 g (12.38 oz)
• UVA Probe: 100 g (3.53 oz)
• UVC Probe: 103 g (3.63 oz)