UV dose meter curelog Base

The calibration uncertainty stated above is the expanded uncertainty of the calibration (k = 2, confidence level approx. 95 %) and applies to the calibration source and the calibration conditions. In use the measurement uncertainty is larger: spectral mismatch at the source actually used, the sensor temperature, ageing since calibration as well as distance and alignment to the source are added to it. How these combine into an uncertainty budget is explained under Measurement uncertainty in UV measurement.

The curelog Base records the peak irradiance and the dose of one pass in one spectral range and shows both values after the run. It does not store a time profile or measurement series; the curelog with up to 2000 Hz recording and PC software is intended for that. For the daily quick check of a conveyor system – is the dose still at 100 % of the release value? – the Base with its 14 mm height is sufficient.

The range depends on the lamp and the photoinitiator: UVA (315–400 nm) or UVA+ (330–455 nm) for medium-pressure mercury lamps and UV LEDs from 365 to 405 nm, VISB (400–480 nm) for blue LEDs at 405–450 nm, UVC (200–280 nm) for disinfection sections. Because the range is built in, it is fixed when ordering; anyone who wants to compare several ranges chooses the curelog PRO with four channels.

The permissible operating temperature is 70 °C, or briefly (up to 60 s) an ambient temperature of 120 °C; with typical conveyor dryers with short dwell time under the lamp the instrument stays below it. For long systems or IR zones Opsytec recommends a cooling pause between two runs and a look at the housing temperature, because a warmed photodiode changes its sensitivity by a few per cent. The sensor sits on the rear of the housing and is cosine-corrected.

The calibration certificate states the expanded calibration uncertainty with k = 2; for the curelog Base it is typically 4.5–6.0 %. In use the measurement uncertainty is larger, because spectral mismatch at the source actually used, sensor temperature, ageing and measuring geometry are added to it. How these combine into an uncertainty budget is explained under Measurement uncertainty in UV measurement.

Scope of delivery: the curelog Base, a USB cable, the power supply unit, the factory calibration certificate and a transport case. Please state the required spectral range with your order. A later upgrade to the curelog ONE with extended functions is possible.

Accredited calibration to ISO/IEC 17025 in our own calibration laboratory. On delivery the device is already factory-calibrated.