QUART didoEASY M

The QUART didoEASY meters are designed for users who emphasise high precision in dosimetric applications but do not require the performance of a full-range dosemeter package.

QUART didoEASY meters can be used to measure parameters which are essential for service and quality assurance operations at x-ray equipment such as dose, dose rate and exposure time. Of course, as with all QUART meters – with maximum precision.

- kVp / PPV measurement available in the (optional) QUART didoEASY+ M version.

- Direct-HVL and kVp / PPV measurement available in the (optional) QUART didoEASY++ M version.

Since the meters do NOT require any pre-setting procedure, measurement results are acquired very quickly:

1. Position the detector and switch on the didoEASY meter...

2. Set the x-ray equipment to the desired parameters...

3. Expose... - and simply read all measurement information from the meter‘s display. The QUART didoEASY M meters automatically compensate for Mo/Mo beam quality. Corrections factors are provided for further radiation qualities.

Technical specifications

General Features

Exposures: one to acquire all parameters
Mode: auto-start, auto-stop & auto-reset
Power supply: Rechargeable Li Ion accu
Battery time: approx. 120 hrs. until recharge required
Base size: 17x7x4.5cm (LxWxH)
Base weight: 200 g
Detector size: 6.0x1.8x0.5cm (LxWxH)
Detector weight: negligible (!)

Specifications

didoEASY M basic configuration

Dose: 0.2 µGy - 999 Gy (Uncertainty: ±5% @ 25-40 kV / Resolution: 0.01 nGy)
Dose Rate: 0.3 µGy/s - 1 Gy/s (Uncertainty: ±5% over full range / Resolution: 0.1 nGy/s)
Time: 0.5 ms - 300 s (Uncertainty: ± 0,5% / Resolution: 0.1 ms)
Pulses: 1 - 9999 (Uncertainty: ± 1 pulse)
Pulse Rate: 0.1 - 250 pulses/s (Uncertainty: ± 0.05 pulses/s)

didoEASY+ M - features added kV measurement

Dose: 0.2 µGy - 999 Gy (Uncertainty: ±5% @ 25-40 kV / Resolution: 0.01 nGy)
Dose Rate: 0.3 µGy/s - 1 Gy/s (Uncertainty: ±5% over full range / Resolution: 0.1 nGy/s)
Time: 0.5 ms - 300 s (Uncertainty: ± 0,5% / Resolution: 0.1 ms)
Pulses: 1 - 9999 (Uncertainty: ± 1 pulse)
Pulse Rate: 0.1 - 250 pulses/s (Uncertainty: ± 0.05 pulses/s)
kVp / PPV: 25 – 35 kV (Uncertainty: ±5% at calibrated reference points / Resolution: 0.1 kV); Exposure conditions: Mo/Mo; HVL 0.6 – 2.2 mm Al eq., correction factors provided for further radiation qualities

didoEASY++ M - features added kV and direct-HVL measurement

Dose: 0.2 µGy - 999 Gy (Uncertainty: ±5% @ 25-40 kV / Resolution: 0.01 nGy)
Dose Rate: 0.3 µGy/s - 1 Gy/s (Uncertainty: ±5% over full range / Resolution: 0.1 nGy/s)
Time: 0.5 ms - 300 s (Uncertainty: ± 0,5% / Resolution: 0.1 ms)
Pulses: 1 - 9999 (Uncertainty: ± 1 pulse)
Pulse Rate: 0.1 - 250 pulses/s (Uncertainty: ± 0.05 pulses/s)
kVp / PPV: 25 – 35 kV (Uncertainty: ±5% at calibrated reference points / Resolution: 0.1 kV); Exposure conditions: Mo/Mo; HVL 0.6 – 2.2 mm Al eq., correction factors provided for further radiation qualities
Direct-HVL: 0.1 – 11 mm Al (HVL output, Uncertainty: ±8% / Resolution: 0.1 mm Al); Internal filtration 0.1 – 12.5 mm Al equivalent; 25-40 kV range

* S A Mitchell and C J Martin, Comparison of ionisation chamber and semiconductor detector devices for measurement of the dose–width product for panoramic dental units, J. Radiol. Prot. 33 321 (2013).