Calendar

Calendar 2:

Calibration facility for spectral radiometers used for actinic flux and photolysis rate measurements

The spectral radiometer calibration facility is located in the School of Chemistry at the University of Leeds. We offer the following services

Determination of the absolute sensitivity of spectral radiometers:

Calibrations are performed using a NIST-traceable spectral irradiance standard (OL-FEL-A, 1kW, calibrated between 250 – 750 nm) and stabilised current source (OL 83A). The lamp and receiver optics are mounted on an optical bench at a lamp-specified distance. During calibrations, the lamp and receiver are enclosed in a black box to eliminate reflections from surfaces. A filter holder which can house cutoff filters can be placed between the lamp and receiver, e.g. a WG320 long-pass filter, which removes radiation below 320 nm, for stray-light assessment.

Verify wavelength accuracy of spectral radiometers:

Using a low-pressure mercury pen-ray lamp, literature Hg emission lines, in the range of 290 – 550 nm, can be compared to instrument spectra to determine any wavelength offsets.

Determination of the absolute sensitivity of spectral radiometers:

Calibrations are performed using a NIST-traceable spectral irradiance standard (OL-FEL-A, 1kW, calibrated between 250 – 750 nm) and stabilised current source (OL 83A). The lamp and receiver optics are mounted on an optical bench at a lamp-specified distance. During calibrations, the lamp and receiver are enclosed in a black box to eliminate reflections from surfaces. A filter holder which can house cutoff filters can be placed between the lamp and receiver, e.g. a WG320 long-pass filter, which removes radiation below 320 nm, for stray-light assessment.

Verify wavelength accuracy of spectral radiometers:

Using a low-pressure mercury pen-ray lamp, literature Hg emission lines, in the range of 290 – 550 nm, can be compared to instrument spectra to determine any wavelength offsets.

Not applicable.

Instruments should be sent to the lab for calibration.

Calibration performed by Facility staff

All instrumentation sent to the facility should have an up-to-date electrical safety test (PAT label)

Any user-owned instruments needing delivery should be shipped to the following address

School of Chemistry

University of Leeds

Woodhouse Lane

Leeds

LS2 9JT

Mark all items for the attention of Dr Lisa Whalley

If bringing in additional instrumentation then all consumables and tools for that instrumentation should be provided.

Access charge
- NERC grants: £20.00 per day (09:00 – 17:00, Mon – Fri).
- All other circumstances please contact Dr Lisa Whalley.
Instrument Insurance
- The user must have comprehensive insurance for any kit they bring
Public Liability Insurance
- The AMOF is not liable for any damage or injury arising from the deployment or operation of this instrument when unattended by the instrument scientists.
Use of AMOF Personnel
- There will be a cost for this. Please contact the Instrument scientist for more details.

The user is liable for all costs arising from the shipping of any instruments both to and from the School of Chemistry.