RMD Pro - The fully digital radiometer
The RMD radiometer is one of the latest developments from Opsytec Dr. Gröbel GmbH. This easy-to-use radiometer is based on more than 30 years of experience in all areas of irradiation and illuminance measurement. It features a wide dynamic range and extremely low noise. For this purpose, the sensor already contains a multi-stage amplification, an extremely precise analog-to-digital converter and a temperature sensor. The memory contained in the sensor contains all sensor identifications and the calibration history.
This allows several ultraviolet sensors and visible sensors to be used on the Radiometer RMD. A wide range of sensors is available for a wide variety of production and control processes. Two sensors can be read out simultaneously. Sensors for the evaluation of erythema-weighted radiation and multi-channel sensors are also available.
The measurement data are clearly displayed on the graphic display.
The newly developed diffuser achieves a very good cosine correction with excellent lateral uniformity. The radiation to be measured is distributed evenly over several channels, so that, for example, the simultaneous determination of UVA irradiance and illuminance is possible.
Compared to the RM-22, the RMD features a significantly higher resolution of 24 bit, an extended measuring range of up to 7 orders of magnitude, multi-channel sensors and the simplified operation.
The measured values can be stored in the RMD and output via USB. With the corresponding software, the RMD can be controlled from the PC. The device can be supplied with power via battery or power supply unit and records measurement data for up to 100 days.
APPLICATIONS:
- Measurement of UV LEDs & UV light sources
- NDT, material testing
- Monitoring of UV irradiation systems
- Measurement of job security
- Measurement of Heff and HUVA
- Multi-channel measurements
- Applications with high dynamics
- Measurement of UVC radiation
- Measurement of UVC LEDs & UVC light sources
- Dose measurement
- Proof of UVC surface disinfection
- Data logging
TECHNICAL DATA DIGITAL RADIOMETER RMD
| Sensor connectors | 2, fully digital |
| PC interface | USB 2.0 |
| Display | graphical, 128 x 64 px |
| Display output | 1 + 2 channels |
| Irradiance + Dose | |
| Min/Max Irradiance | |
| Dimensions | 160 x 85 x 35 mm |
| Weight | 250 g |
| Power supply | internal Li-Ion battery, USB |
| 230 V plug-in power supply | |
| Internal memory | 8 GB |
| Sampling rate | adjustable: 1 s - 15 min |
| Recording time | > 2400 h |
| Operation temperature | 0 to 40 °C |
| Storage temperature | -20 to 60 °C |
| Humidity | < 80% non-condensing |
The RMD radiometer is available in two versions - as RMD Pro with all functions and as more economical RMD. The RMD can be subsequently upgraded with the Pro functions. For this purpose, please order upgrade kit article number 814403. You can perform the upgrade yourself. It is not necessary to send in the device. We would be pleased to perform the upgrade during the annual recalibration.
TECHNICAL DATA UV SENSORS FOR RMD
| Spectral range | UVA, UVA+, UVBB |
| Measurement range, typ. | 0 - 10 W/cm² |
| Resolution | 0,001 µW/cm² |
| Spectral range | UVB, UVC, VISB |
| Measurement range, typ. | 0 - 1 W/cm² |
| Resolution | 0,001 µW/cm² |
| Spectral range | UVC (for occupational safety |
| detection), erythema+UVA | |
| Measurement range, typ. | 0 - 10 mW/cm² |
| Resolution | 0,001 µW/cm² |
| Dose range | 0 - 100 MJ/cm² |
| Illumination meas. range | 0 - 500.000 lx |
| Resolution | 0,001 lux |
| Dynamic range | up to 107 |
| AD conversion | 24 bit |
| Temperature sensor | integrated |
| Dimensions | Ø 40 mm, h 35 mm |
| Optical area | Ø 6 mm |
| Weight | 160 g |
| Connecting cable | 2 m |
| Operation temperature | 0 to 60 °C |
| Storage temperature | -20 to 60 °C |
| Humidity | < 80% non-condensing |
Use for UVC decontamination RMD & RM-22:
The RMD is the successor of the RM-22, which was successfully used in studies on disinfection.
Information and important notes on UVC decontamination of a hospital room can be obtained here free of charge:
M. Lindblad, et al., Ultraviolet-C decontamination of a hospital room: Amount of UV light needed, Burns (2019), https://doi.org/10.1016/j.burns.2019.10.004
E.g. for measurements of mercury low pressure lamps we recommend an UVC UVGI sensor. For measurements of the novel UVC LEDs we recommend an UVBB UVGI sensor to overcome the overlap of filter edge at 280 nm and emission at 275 nm. For measurements of far UVC KrCl* excimer lamps emitting at 222 nm we recommend a special UV sensitive sensor.
[2] : Germicidal Efficacy and Mammalian Skin Safety of 222-nm UV Light, Buonanno et al. Radiat Res., 2017 April ; 187(4): 483–491. doi:10.1667/RR0010CC.1.
[3] : Far-UVC light: A new tool to control the spread of airborne-mediated microbial diseases, D. Welch et al. DOI:10.1038/s41598-018-21058-w et al.
Can I connect different sensors to one RMD radiometer?
Yes, the calibration data is stored directly in the radiometer sensors, which makes it easy to retrofit them at any time. By using different sensors with one radiometer RMD, you can react flexibly to different measurement requirements.
Can the RMD measure the dose in J/m²?
Yes, the radiometer can determine the dose automatically. The RMD Pro also saves it. The unit of dose is J/m². This corresponds to one watt times one second and is related to an area, e.g. one square meter. So J/m² is also Ws/m².
Is the RMD radiometer suitable for process control?
Yes, the RMD is suitable for process control. The sensors have a very high dynamic range for this purpose. Measure with the RMD radiometer at the point on the surface that you illuminate with UV. Carry out these measurements weekly, for example. For continuous measurements, we recommend our PLC and inline sensors. These are mounted at a lateral position and can also monitor the UV system during production. The adjustment is then carried out using the weekly measurements, for example.
Can I use the RMD radiometer to measure PWM-dimmed LEDs and pulsed picture lamps?
The RMD radiometer is suitable for measuring PWW (pulse width modulation) dimmed LEDs. Due to the internal averaging and the sampling rate of the 24 bit ADC, the time average of the irradiance is output precisely. For the same reason, however, individual pulses or flashes cannot be measured.
For measuring fast UV systems, we recommend our curelog fast-measuring bath radiometers, which measure very quickly with up to 2000 measurements per second. For measurements of pulsed flash lamps, we recommend our integrating spectroradiometers UVpad and UVpad E. These also output the time-averaged irradiance as well as the dose.
Is the RMD radiometer suitable for UV risk assessment in the workplace?
Yes, the RMD radiometer is suitable for UV risk assessment in the workplace. It enables precise measurements of UV radiation at very low irradiance levels. This means that the daily exposure dose of 30 J/m² can be measured.
For general measurements for UV risk assessment at the workplace, we recommend our erythema sensor. Assessments, e.g. for LEDs, can also be carried out with the UVA+ sensor and a simplified weighting with the erythema function S(lamda).
Is the RMD suitable for measuring 0.2 microW/cm² (UVC)?
Yes, the RMD has sufficient sensitivity to accurately measure low intensities such as 0.2 µW/cm². We recommend an averaging time of 2 s, an offset adjustment and a tripod.
Is the RMD waterproof and can be operated permanently outdoors?
No. For permanent outdoor use, Opsytec Dr. Gröbel offers the RM-12 and IP-65 sensors. The RM-12 is IP-65 waterproof, the RMD is not. The RMD should therefore only be used in dry environments.
Is the RMD radiometer suitable for belt applications such as UV curing and disinfection?
The RMD Pro from Opsytec Dr. Gröbel records the data and is therefore basically suitable for belt applications such as UV curing or disinfection conveyor belts. Due to their small size, both the curelog and the spectral radiometer UVpad are better suited for this purpose.
Is the RMD radiometer suitable for permanent monitoring?
The RMD Pro from Opsytec Dr. Gröbel records the data and is suitable for permanent monitoring. Please also compare our RMD Touch laboratory radiometer or the cheaper SPS sensors.
Is the RMD radiometer suitable for DVGW/ÖNORM-compliant measurements?
Yes, Opsytec Dr. Gröbel recommends the DVGW reference radiometer RMD Pro with DVGW sensors for DVGW/ÖNORM-compliant measurements. The UV reference radiometer meets the required standards. The DVGW sensors can be calibrated in accordance with DIN 19294-2 for low-pressure lamps or DIN 19294-4 for medium-pressure lamps. We also have a large selection of available UV LEDs in stock as calibration lamps for special calibration requirements, such as UV LEDs.
Can the radiometer s measurement data be opened in Excel?
Yes, the measurement data is saved directly as a csv file on 8 GB of memory. You can open these in EXCEL. The CSV file contains the date & time, measuring device and sensor identification, the irradiance, the dose and the sensor temperature.
