LS127C Integrated UVC Irradiance Meter
LS127C Integrated UVC Irradiance Meter
For field checks of UVC germicidal lamps, disinfection equipment and 253.7 nm mercury lamps
The LS127C integrated UVC irradiance meter measures irradiance and energy from UVC germicidal lamps, 253.7 nm / 254 nm mercury lamps, disinfection equipment, sterilization cabinets and related UV systems. Its one-piece design suits quick field measurements, spot checks and lamp intensity verification. If testing must follow a healthcare, disinfection-equipment or internal quality procedure, confirm the method against the applicable standard, measurement distance and site conditions.
Field measurements of UVC germicidal lamps
The LS127C is suited to irradiance checks of UVC germicidal lamps, disinfection equipment, sterilization cabinets and 253.7 nm mercury lamps. A measuring hook can help maintain the required measurement position and distance.
A 1 m measuring hook is available for field checks of UVC germicidal lamps.
Measurement statistics at a glance
The meter displays real-time, maximum, minimum and average irradiance values, together with measurement duration. The energy display can also show accumulated energy for field inspection and record keeping.
USB communication and computer software
A USB communication interface and dedicated computer software support measurement data review, organization and report preparation. Confirm the current software version and compatibility with Fulcrum before deployment.
Automatic shutdown and saved readings
The auto-off timer can be set from 1 to 255 minutes. Measurement data are saved when the meter switches off; after restart, the latest reading can be reviewed. Product information states storage for up to 9 records, suitable for short inspections and field logs.
Bluetooth data transfer for remote viewing
Bluetooth supports remote viewing of measurements with a compatible application. This can help when a UVC lamp is operating and it is not practical to view the instrument screen nearby. Actual range and compatibility depend on the environment, device and software. Continue to follow site safety procedures and confirm shielding and exposure controls.
Bluetooth viewing requires a compatible application; verify device and software requirements for your site.
The LS127C is intended mainly for field checks of UVC germicidal lamps, 253.7 nm / 254 nm mercury lamps and disinfection equipment. For measurements inside equipment or deep enclosures, or when a separate probe is needed, consider the LS126C split-type UVC irradiance meter. For one instrument with interchangeable UVA, UVB and UVC probes, consider the LS125 UV irradiance meter. Select based on source wavelength, measurement distance, illuminated area, measurement range and site safety procedure.
Contact Fulcrum about selectionReference specifications from the available product information. Confirm the current configuration and acceptance criteria with Fulcrum before purchase or use.
| Parameter | Specification |
|---|---|
| Spectral response | 230–280 nm; peak wavelength λp = 254 nm |
| Irradiance range | 0–20,000 μW/cm² |
| Irradiance resolution | 0.1 μW/cm² |
| Energy range | 0–9,999,999 μJ/cm² |
| Relative indication error (referenced to NIM standard) | H < 50 μW/cm²: ±4 μW/cm² H ≥ 50 μW/cm²: ±8%H |
| Long-wavelength response error | <60% |
| Cosine response error | 10% |
| Linearity error | ±1% |
| Short-term stability | ±1% after 30 minutes powered on |
| Fatigue characteristic | Attenuation <2% |
| Zero error | ±0.1% of full scale |
| Response time | <0.5 s |
| Recording duration | 0–99,999 s |
| Selectable units | μW/cm² (default), mW/cm², W/m² |
| Bluetooth range | About 50 m in an open area |
| Instrument dimensions | 188.5 × 75.2 × 30.3 mm |
| Weight | About 232 g including batteries |
| Display | 240 × 160 dot-matrix LCD |
| Power | 2 AA alkaline batteries |
| Operating environment | 0–40°C; humidity <85% RH |
Specifications may change. Contact Fulcrum for the latest information.
LS127C Operation Video
UVC Irradiance Measurement Demonstration
Watch the video for an introduction to operation and on-site measurement with the LS127C integrated UVC UV irradiance meter. The LS127C is suitable for on-site inspection of UVC germicidal lamps, 253.7/254 nm mercury lamps, disinfection equipment and sterilization cabinets. Confirm the source wavelength, measurement distance, illuminated area, measurement range and site safety procedures before testing.