Portable luxmeter with data output – HD2102.1

The HD2102.1 luxmeter with data output is a portable photo-radiometer designed for measurements of illuminance, luminance, PAR and irradiance, developed for technical applications where it is not enough to read an instantaneous value, but it is also necessary to evaluate measurement trends over time. Depending on the connected probe, the instrument can perform photometric and radiometric measurements in the VIS-NIR, UVA, UVB, UVC and UV-BC regions, as well as evaluate effective irradiance according to UV weighting curves.

The feature that distinguishes the HD2102.1 from the HD2302.0 model is the ability to calculate the Q(t) time integral of acquired measurements. This function is useful when the control concerns not only the intensity of radiation or light at a specific moment, but also the accumulated exposure during a test, cycle or measurement interval. Programmable thresholds can be associated with the integrated measurement or integration time, with automatic interruption of the calculation once the preset limit has been reached.

Probes equipped with SICRAM module are automatically recognized and retain their own internal calibration data. This allows the same instrument to be used with different probes, for example moving from a lux measurement to UVA control, from a PAR reading to global solar irradiance verification or blue-light evaluation, reducing the risk of incorrect settings.

The HD2102.1 is suitable when measurements must be transferred in real time to a PC or printer through the RS232C port, but without the internal memory functions typical of the HD2102.2 datalogger version. It therefore represents an intermediate solution: more advanced than the HD2302.0 for tests involving integration and thresholds, but simpler than the HD2102.2 when large quantities of data do not need to be stored inside the instrument.

Applications

• Illuminance and luminance measurements in technical environments, laboratories, production departments and lighting systems
• Evaluation of luminous or radiometric exposure through Q(t) integral calculation
• Control of UVA, UVB, UVC and UV-BC sources with programmable integration thresholds
• PAR measurements in the 400…700 nm range for evaluation of light sources dedicated to plant growth
• Real-time transfer of measurements to PC or printers via RS232C output
• Verification of UV lamps, exposure systems, technical light sources and laboratory testing
• Measurements with combined probes for illuminance and UVA irradiance, also useful in museum applications
• Radiometric verification where instantaneous value and accumulated dose over time must be correlated

FAQ – Luxmeter with data output

When should the HD2102.1 luxmeter be selected?
The HD2102.1 is recommended when, in addition to instantaneous measurement, Q(t) time integral calculation or real-time transfer of values to PC or printer is required. It is suitable for technical testing, verification of light sources and radiometric applications with programmable thresholds.

What is the difference between the HD2102.1 and HD2302.0?
The HD2302.0 is more essential and oriented toward spot measurements. The HD2102.1 adds Q(t) integral calculation, threshold management and RS232C communication for real-time data transfer.

What is the difference between the HD2102.1 and HD2102.2?
The HD2102.1 allows real-time transfer of data but is not the datalogger version. The HD2102.2, instead, stores samples internally and can later transfer them to PC via RS232C or USB.

What is the Q(t) calculation used for?
The Q(t) calculation allows evaluation of the accumulated quantity over time, for example luminous or radiometric exposure during a test. It is useful when the control concerns not only the instantaneous value, but also the dose received during a defined interval.

Can the instrument stop calculation when a threshold is reached?
Yes, programmable thresholds can be associated with the integrated measurement or integration time. When the preset limit is reached, the instrument stops the integration calculation.

Which probes are compatible with the HD2102.1?
The HD2102.1 uses LP471 series probes equipped with SICRAM module for illuminance, luminance, PAR, VIS-NIR irradiance, UVA, UVB, UVC, UV-BC, blue light, effective UV and global solar irradiance measurements.

Does PC connection take place through USB?
The HD2102.1 includes an RS232C port. For direct connection to a PC USB port, the dedicated USB/serial converter accessory is required.

Must the probes be ordered separately?
Yes, probes must be selected according to the required measurement and ordered separately. This allows the instrument to be configured consistently with the actual application.