OMYL-M61 and OMYL-M62 light data loggers record luminance with a spectral sensitivity adjusted to the spectrum of the human eye. These data loggers are available with standard memory of 100,000 readings (OMYL-M61, OMYL-M62) or expanded memory of 4 million readings (OMYL-M61-4M, OMYL-M62-4M).
Models OMYL-M61 and OMYL-M61-4M have one internal channel for light measurement. Models OMYL-M62 and OMYL-M62-4M models have three internal channels for measuring light, temperature and humidity. These data loggers are typically used in weather stations, museums, street lighting or commercial/industrial lighting studies.
The storage medium is non-volatile flash memory so no data is lost if the battery becomes discharged. Data logger setup as well as data retrieval is accomplished using the included standard OMYL-SOFT software. Downloaded data is stored in the OMYL-SOFT software as a text file for viewing in third party software packages or Microsoft Excel. The OMYL-SOFT standard software does not include any graphing functionality. Graphing and analyzing downloaded data files requires the OMYLSOFT- PLUS version of the software (sold separately).
SPECIFICATIONS Sensor Type OMYL-M61/OMYL-M61-4M: Single internal channel for light (luminance) OMYL-M62/OMYL-M62-4M: Three internal channels for light (luminance), temperature and humidity Measuring Range Light (Luminance): 0 to 40,000 lux Relative Humidity (OMYL-M62, OMYL-M62-4M Only): 0 to 100% RH Temperature (OMYL-M62, OMYL-M62-4M Only): -30 to 70°C (-22 to 158°F) with standard battery; -40 to 90°C (-40 to 194°F) with optional high temperature battery Resolution Light: 1 lux Relative Humidity (OMYL-M62, OMYL-M62-4M Only): 0.01% RH Temperature (OMYL-M62, OMYL-M62-4M Only): 0.01K, 0.01°C (0.02°F) Reading Rate: 1 second to 24 hours Start Modes: Immediate start, delayed start Memory Capacity OMYL-M61/OMYL-M62: 100,000 readings OMYL-M61-4M/OMYL-M62-4M: 4 million readings Memory Wrap Around: Yes (software configurable) Battery: 3V lithium battery [standard temperature range battery (included), optional high temperature range battery]; user replaceable Battery Life (Standard Temperature Range Battery): 4 years at 1 minute reading rate, 230 days at 10 second reading rate, 25 days at 1 second reading rate LED Functionality: Integrated status LED indicates data logging status, low battery or alarm condition Alarms: Software programmable high/low thresholds Computer Interface: USB (interface cable included) Software: XP SP3/Vista/7 and 8 (32- and 64-bit) Operating Environment: -30 to 70°C (-22 to 158°F) with standard lithium battery; -40 to 90°C (-40 to 194°F) with optional high temperature lithium battery Dimensions: 30 H x 50 mm dia (1.18 x 1.97') Weight: 70 g (2.5 oz) Enclosure: Robust, shock-proof POM, IP65