How to Measure Dosimeters

Quick summary - Any user (with a Technician role) can measure dosimeters on the report’s measurement screen. When the reader is active and connected to the DoseControl system, the user simply places the dosimeter into the holder, enters a dosimeter ID on the screen, and then clicks the “measure” button. The measured absorbance and dose will appear next to the dosimeter’s ID on the screen.

1        From the DoseControl home screen, create a new report or open an existing report.

2        The software will open the measurement screen. You will always “zero” the reader at the start of every measurement session. Follow the on-screen prompts.

• Remove dosimeter samples from the sample compartment.

• Click OK to zero the reader.

The software verifies the measurement wavelength setting of the spectrophotometer before every measurement and ensure it matches the calibration settings.  The measurement wavelength is set in the Calibration configuration, and the software will automatically control the measurement wavelength of the spectrophotometer.

3        The cursor defaults to the Dosimeter ID field. Capture the Dosimeter ID in one of the following ways:

a) Type a dosimeter ID into the Dosimeter ID field.

b) Scan the dosimeter ID using a hand-held scanner

c) If you have an internal barcode scanner installed, just click the “Measure” button and the dosimeter ID is automatically captured.

If you have the internal Matrix 120 scanner installed in the sample compartment you DO NOT need to enter a dosimeter ID. The ID will be automatically scanned when you click “Measure”. See How to use the Matrix scanner

4        Click the ‘Measure’ button to measure the dosimeter’s absorbance value.

5        The dosimeter is measured and the measurement information is shown in the Dosimeters list section of the screen, displaying the dosimeter ID, the measured absorbance, the dosimeter thickness, and the calculated dose.

NOTE

The ‘thickness’ value is the average thickness value of the dosimeter batch (the Batch is setup by the App Admin) associated with the active calibration (dosimeter batch calibration). The ABS ‘absorbance’ value is the value measured by the spectrophotometer.  If the absorbance count is 2 or more (e.g. A and B dosimeter) the absorbance and thickness are the average of both replicates.

NOTE

The ‘dose’ is calculated by the software using the active calibration information.

5        For each Dosimeter ID, you can enter a ‘DSM Position’ (dosimeter position, such as reference) and ‘Tote ID’ (the tote, carrier number) if you desire. Click the “Save Changes” button. This information will be saved with the Dosimeter ID measurement information.

6        Repeat the measurement process for all required dosimeters.  The measurement list will update with each action.