UVA Ultra-Violet Light Meter (UVA-365SD) DataLogging

Lutron UVA-365SD UVA Light Meter, 365 nm Long Wave, with SD Card Data Logging

The Lutron UVA-365SD measures long wave ultraviolet irradiance with peak response at 365 nm — the wavelength of blacklights, curing lamps and inspection lamps. Two ranges cover up to 1.999 mW/cm² at 0.001 resolution and up to 19.99 mW/cm² at 0.01 resolution, which spans a modest inspection lamp through a production curing head.

Readings log to an SD card with a date and time stamp at intervals from 1 second to 1 hour, and open directly in Excel with no software to install. That turns a spot check into a record — which is what you need when lamp output has to be documented over time rather than simply observed, or when a curing process has to be shown to have been within specification.

The sensor is on a separate corded probe with a cosine correction filter and a metallic housing, so it can be laid on a cure bed, set at a work plane or reached into an exposure unit while the display is read from a safe distance. The meter also accepts a Type K or Type J thermocouple for a separate temperature channel, useful because UVA lamp output and lamp temperature are related.

Ultraviolet light injures eyes and skin, and the damage gives no warning while it is happening — symptoms appear hours later. Never look at an energized UV lamp. Wear UV rated eye protection, cover exposed skin, and use the separate probe so the sensor is in the beam and you are not.

NOTE: This is a long wave UVA meter. Germicidal lamps used for disinfection emit at 254 nm, outside this meter's response, so the UVA-365SD is not suitable for verifying germicidal UVC output. For 254 nm work use a UVC meter, or the YK-37UVSD, which covers both bands.

Typical Applications

• Curing of inks, adhesives and coatings — verifying lamp output before a run and logging it through production.
• Conveyor curing lines, where the probe travels with the work and the logged maximum is the peak irradiance the part received.
• Photoresist exposure and graphic arts platemaking.
• Blacklight and inspection lamp output checks, including magnetic particle and dye penetrant inspection.
• Photochemical matching.
• Weathering and degradation test chambers, where logging over days is the point.
• EPROM erasure equipment.
• Monitoring ultraviolet radiation hazards around welding operations.
• Tanning equipment output verification.
• Lamp replacement scheduling, based on measured output rather than running hours.
• Forensic and document examination lamps.

Features

• Professional UVA light measurement.
• Long wave 365 nm ultraviolet irradiance measurement, for reading the output of a UVA or blacklight source.
• Two ranges: 2 mW/cm² and 20 mW/cm².
• Exclusive UVA sensor structure with a metallic housing.
• Sensor with cosine correction filter, so light arriving at an angle is weighted correctly.
• One touch zero button for the UVA function.
• Separate probe on a cable, so the sensor can be placed at the optimum position while you stay clear of the beam.
• Real time SD memory card data logger with built-in clock and calendar. Sampling time settable from 1 to 3,600 seconds.
• Manual data logging by setting the sampling time to 0 seconds, with a selectable location number from 1 to 99.
• No software to install. Remove the SD card, plug it into a computer, and the readings open directly in Excel with year, month, date, hour, minute and second.
• Type K and Type J thermocouple port with automatic temperature compensation.
• Temperature displayed in °F or °C.
• Data hold, plus maximum and minimum recording with recall.
• Auto power off, which can be disabled.
• Large LCD with green back light for reading in dim areas.
• Fold-out easel stand and brass threaded tripod mount.
• RS-232/USB computer interface.
• Powered by six AA batteries or an optional 9V DC adapter.

Specifications

• Sensor spectrum: 260 nm to 390 nm, with peak response at 365 nm.
• Sensor: exclusive UVA photo sensor with cosine correction filter and metallic housing.
• Zero adjustment: by push button.
• Circuit: custom one-chip microprocessor LSI.
• Display: 52 x 38 mm LCD with green back light, switchable on and off.
• Display sampling time: approximately 1 second.
• Data logger sampling time: 1 to 3,600 seconds in automatic mode; manual mode saves one reading per button press, with a selectable location number from 1 to 99.
• SD card capacity: 1 GB to 16 GB.
• Advanced settings: clock, decimal character for the SD card, auto power off, beeper on/off, thermometer type (K or J), temperature unit, sampling time, and card format.
• Temperature compensation: automatic, for the Type K/J thermometer.
• Data hold: freezes the displayed reading.
• Memory recall: maximum and minimum values.
• Data output: RS-232/USB PC interface. The optional UPCB-02 cable provides an RS-232 plug; the optional USB-01 cable provides a USB plug.
• Meter dimensions: 7.0 x 2.7 x 1.8" (177 x 68 x 45 mm).
• UVA probe dimensions: 1.5" diameter x 1.0" (38 mm diameter x 25 mm).
• Meter weight: 12.4 oz (351 g).
• UVA probe weight: 3.6 oz (103 g).
• Operating temperature: 32 to 122 °F (0 to 50 °C). NOTE most batteries are not rated for use below -4 °F or above 125 °F.
• Operating humidity: less than 85% RH, non-condensing.
• Power supply: six 1.5V AA (UM3) alkaline or heavy duty batteries, or an optional AC to DC 9V adapter.
• Power consumption: approximately 6.5 mA with no SD card saving and the back light off; approximately 30 mA while saving to the card; add approximately 16 mA with the back light on.

UVA Light Measurement

Specifications apply at 23 ± 5 °C. Calibration is performed under UVA light against a standard UVA meter. Note that 1 mW equals 1 mJ per second.

Type K and Type J Thermometer

The temperature channel is a separate function, used when the light probe is disconnected.

Specifications are tested in an environment with RF field strength less than 3 V/m and frequency less than 30 MHz.

Accessories Included

• UVA light sensor probe.
• Hard carrying case, CA-06.
• Instruction manual.

Optional Components

• 16 GB SD memory card, SD-16GB.
• Light probe extension cable, EXCB-05.
• Type K thermocouple probe.
• Lutron data acquisition software for Windows, SW-U801-WIN.
• Lutron Excel data acquisition software, SW-E802.
• Lutron USB data acquisition cable with driver, USB-01.
• RS-232 cable, UPCB-02.
• USB to 9V DC power cable, USBP-59.
• 110V AC to 9V DC adapter, AP-9V110.