Fluke Biomedical RaySafe Xi 8201011 User manual

USER MANUAL
RaySafe Xi

© 2018.10 Unfors RaySafe 5000071-14.00
All rights are reserved. Reproduction or transmission in whole or in part, in any form or by any means,
electronic, mechanical or otherwise, is prohibited without the prior written consent of the copyright owner.
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CONTENTS
INTRODUCTION .................................................................................................... 
Versions........................................................................................................... 
THE RAYSAFE XI.................................................................................................... 
The RaySafe Xi Detectors............................................................................... 
The RaySafe Xi Base Unit ............................................................................... 
GETTING STARTED................................................................................................ 
Keys on the RaySafe Xi Base Unit.................................................................. 
Transfer data to a computer........................................................................... 
Battery and Charger ....................................................................................... 
R/F MEASUREMENT ............................................................................................ 
MAMMOGRAPHY MEASUREMENT...................................................................... 
Special measurement cases ........................................................................ 
TRANSPARENT MEASUREMENT ......................................................................... 
CT MEASUREMENT ............................................................................................. 
How to measure CT dose............................................................................. 
How to measure CT kVp............................................................................... 
LIGHT MEASUREMENT........................................................................................ 
SURVEY MEASUREMENT .................................................................................... 
mA/mAs MEASUREMENT .................................................................................... 
Passive mAs .................................................................................................. 
MEASUREMENT DEFINITIONS ............................................................................ 
Dose .............................................................................................................. 
Dose Rate...................................................................................................... 
kV/kVp ........................................................................................................... 
Time............................................................................................................... 
Pulse.............................................................................................................. 
Frame rate..................................................................................................... 
Dose per Frame............................................................................................ 
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RaySafe Xi User Manual – Contents

HVL (Half Value Layer) .................................................................................. 
Total Filtration ............................................................................................... 
mA and mAs.................................................................................................. 
RAYSAFE XI VIEW................................................................................................ 
Installing RaySafe Xi View ............................................................................ 
Setup of Bluetooth communication.............................................................. 
Getting help .................................................................................................. 
ACCESSORIES ..................................................................................................... 
The RaySafe Xi Flexi stand........................................................................... 
The RaySafe Xi Cassette holder................................................................... 
TIPS AND TRICKS................................................................................................ 
Arrangement of Measurement..................................................................... 
Sensor Position ............................................................................................. 
Reset Switch.................................................................................................. 
Vertical Detector Placement......................................................................... 
kVp on AMX................................................................................................... 
Display Codes ............................................................................................... 
Frequently Asked Questions ........................................................................ 
Troubleshooting............................................................................................ 
WARRANTY, SERVICE AND SUPPORT................................................................. 
Service .......................................................................................................... 
Return Procedure for Service and Warranty ................................................ 
DISPOSAL............................................................................................................ 
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RaySafe Xi User Manual – Contents

INTRODUCTION
VERSIONS
This user manual covers the following articles:
Base unit version: 8201011 Detector version: 8202011
8201021 8202021
8201013 8202022
8201023 8202031
8202040
8202041
8202050
8202060
8202062
8202070
This manual discribes the RaySafe Xi which is compatible with the Unfors Xi Platinum Plus version.
ABOUT THIS USER MANUAL
This user manual is intended to assist users in the safe and eective operation of the product described.
Before attempting to operate the product, you must read these instructions for use, noting and strictly
observing all WARNINGS and CAUTION notices.
WARNING A WARNING alerts you to a potential serious outcome, adverse event or safety hazard. Failure
to observe a warning may result in death or serious injury to the operator or patient.
CAUTION A CAUTION alerts you to where special care is necessary for the safe and eective use of
the product. Failure to observe a caution may result in minor or moderate personal injury or
damage to the product or other property, and possibly in a remote risk of more serious injury,
and/or cause environmental pollution.
NOTE Notes highlight unusual points as an aid to an operator.
These Instructions for Use describe the most extensive configuration of the product, with the maximum number
of options and accessories. Not every function described may be available on your product.
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RaySafe Xi User Manual – Introduction

THE RAYSAFE Xi
The RaySafe Xi is intended for measurements in medical X-ray imaging applications. The RaySafe Xi is not
intended for use during patient examination.
The RaySafe Xi consists of a base unit and several dierent external detectors measuring: Radiography/
Fluoroscopy (R/F), mammography (MAM), on AEC or ABC systems (Transparent), Computed Tomography (CT),
ambient and emitted light (Light) and scattered or low level radiation (Survey).
Communication between detector and base unit is purely digital, thereby minimizing sensitivity to mechanical
or electrical stress. The base unit may also be equipped with an optional integrated tube current meter
(mA/mAs).
THE RAYSAFE Xi DETECTORS
• The R/F detector has two sensors: R/F high is designed for conventional, high dose rate measurements
normally generated without a phantom between the detector and the X-ray source. R/F low is designed for low
dose rate measurements normally generated with a phantom between the detector and the X-ray source.
• The mammography sensor is used for both low and high dose rates generated in mammography
applications.
• The transparent detector is a solid-state detector with a very small radiologically visible footprint. It is
intended to be used for applications where the R/F detector would influence the automatic exposure
control on X-ray equipment and serves as a complement to the R/F detector. The transparent detector is
designed to mimic the response of a pancake ion chamber detector and therefore it has no backscatter
protection.
• The CT detector is an ionization chamber, designed to measure CT dose for applications such as Dose
Length Product (DLP) and Computed Tomography Dose Index (CTDI).
• The light detector is designed to measure luminance on LCD and CRT monitors, as well as light boxes, and
illuminance for diagnostic X-ray applications.
• The survey detector is designed for measuring leakage or scattered radiation from X-ray tubes or in
examination rooms and leakage radiation from γ-emitting isotopes.
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RaySafe Xi User Manual – The RaySafe Xi

THE RAYSAFE Xi BASE UNIT
There are two versions of the RaySafe Xi base unit: one with and one without mA/mAs capabilities. Both
versions are fully compatible and interchangeable with the RaySafe Xi detectors as long as the firmware
supports the detector (see Specifications). In this manual all information refers to both versions unless
otherwise specified.
The RaySafe Xi base unit automatically identifies the connected detector and displays the settings and
parameters available for that detector.
The built-in active compensation automatically applies corrections for dierent beam qualities, filtrations
and temperatures. During fluoroscopy, survey or light measurements the displayed values are continuously
updated. Data is sent on the serial port, and RaySafe Xi view, the program included with your RaySafe Xi, shows
numerical data as well as waveforms on a PC.
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RaySafe Xi User Manual – The RaySafe Xi

GETTING STARTED
1. Connect a RaySafe Xi detector of your choice to the RaySafe Xi base unit with one of the two (2 and 10 m)
RaySafe Xi cables.
2. Position as required for the selected sensor.
3. Turn on the RaySafe Xi (ON/OFF key, see below), and the instrument specific setup information is
displayed. In the SENSOR MENU a detector or sensor field for your application can be selected.
4. The RaySafe Xi is now in MEASURE MODE and ready to measure. Press STEP to scroll through measured
parameters (also possible during fluoroscopy). The last three displayed parameters will automatically show
up after the next exposure. To change setup values (SETUP MENU) such as various delays, displayed units
and other choices, press SELECT.
KEYS ON THE RAYSAFE Xi BASE UNIT
ON/OFF: Turns on the RaySafe Xi and o when in SENSOR MENU.
EXIT: Exit to the previous menu.
STEP: A short press steps through available options.
SELECT: A long press selects an option.
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RaySafe Xi User Manual – Getting Started

TRANSFER DATA TO A COMPUTER
To view the waveform in the RaySafe Xi view and/or transfer measured data to a PC, connect a serial cable or
Bluetooth module (option) to the communication port on the RaySafe Xi base unit.
BATTERY AND CHARGER
CAUTION! Only authorized personnel may remove and replace the battery.
Fully charge the battery with the provided battery charger before first use. Battery status in percentage is
displayed, together with setup information, when the instrument is switched on.
RaySafe Xi/Unfors Xi Platinum Plus Unfors Xi Platinum
FOR RAYSAFE Xi
The provided battery charger may be connected during all measurements.
FOR UNFORS XiPLATINUM
The provided battery charger may be connected during measurement except when measuring mAs, as it may
create ground currents aecting the measurement. However, the RaySafe Xi battery charger may be connected
during all measurements.
Xi version Battery type Hours of operation Charge time
RaySafe Xi 7.4 V Li-ion 20–40 hours 4 hours
Unfors Xi Platinum 9 V NiMH 10–20 hours 15 hours
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RaySafe Xi User Manual – Getting Started

There are two battery warning levels:
• First warning level, “Battery low”: Finish your measurements and then charge the battery.
• Second warning level, “Battery down”: No further measurements are possible.
When the provided battery charger is connected, the external power indicator is lit and Charging battery will
be briefly displayed. The RaySafeXi battery will be charged even if the RaySafe Xi is turned o.
There is a battery charger LED indicator that is indicating red while charging and green when the battery is fully
charged.
10
RaySafe Xi User Manual – Getting Started

R/F MEASUREMENT
For best accuracy, center the selected sensor field (R/F low or R/F high) and position the long axis of the sensor
field perpendicular to the anode-cathode axis of the tube.
1. SENSOR MENU
R/F low Sensor for conventional low dose rate measurements lower than 1 mGy/s (7 R/min),
normally after a phantom.
R/F high Sensor for conventional high dose rate measurements higher than 1 mGy/s (7 R/min),
normally before a phantom.
Press STEP to step between sensors and SELECT to select a sensor.
2. MEASURE MODE
The displayed values are updated after each exposure, or continuously after 4 seconds of fluoroscopy.
kVp kVp (for the R/F high sensor at adequate signal levels) or kV
Dose Gy (Air kerma, free in air) or R (Exposure)
Dose rate Gy or R per s, m or h
Time ms, s
HVL mm Al
Total Filtration, TF mm Al
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RaySafe Xi User Manual – R/F Measurement

Pulses pulses
Frame rate frames/s
Dose per frame Gy or R
mAs mAs (requires RaySafe Xi base unit with mAs)
mA mA (requires RaySafe Xi base unit with mAs)
3. SETUP MENU
Press SELECT to enter the SETUP MENU (from MEASURE MODE) and STEP to step between setup
parameters.
All values are stored in a non-volatile memory and are valid until manually changed. At start up (after the
battery status information), valid Trig delay, kVp delay and Calc. delay are displayed in sequence.
(Factory settings in bold.)
Trig delay A delay in ms after the normal trig of the RaySafe Xi. Utilize when an unwanted part
of an exposure, such as a pre-pulse, should be excluded from the measurement. No
measurements are performed during the Trig delay. (0, 5, 10, 50, 100, 200, 500, 1000,
2000 ms)
Trig level Use Trig level to measure correct exposure time on waveforms with slowly increasing
output, such as with single phase dental. The default setting is a low value, that depends
on the selected sensor; see Specifications. Can be set to 25, 50 or 75 % of the peak
value of the previous exposure. Use it with the same generator settings and FDD. Not
selectable before the first exposure or at low dose rates.
kVp delay Defined as the delay in ms, after the trig delay, but before the kVp measurement (and
waveform) window begins. Use a kVp delay on machines with slow rising output, such
as single phase intra oral machines and fluoroscopy systems. (0, 2, 5, 10, 50, 150, 300,
1000, 1200, 1500, 1700, 2000 ms)
Calc. delay Defined as the dead time after end trig, before data is calculated. Default is 0.5 s but it is
recommended to use a longer delay when measuring on pulsed fluoroscopy where the
time between pulses may exceed 0.5 s. (0.5, 2, 4, 6, 7 s)
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RaySafe Xi User Manual – R/F Measurement

Dose unit Change the default units and/or use this feature to recalculate a value to a dierent unit.
(Gy or R per s, m or h, where 1 Gy=114.1 R.)
Backlight Display lighting option. (o, 2, 5, 10 s, on)
Auto Power O Never, or after 5, 20 or 60 minutes of inactivity.
Info Displays the serial number (S/N) and firmware version of the connected detector and
the RaySafe Xi base unit and the calibration date for the selected sensor. There is also a
possibility to reset the instrument settings to factory defaults.
kVp Mode “kV only” prevents RaySafe Xi from calculating kVp, which otherwise occurs
automatically when R/F high is selected and the signal level is high enough (“kV/kVp”).
Useful for example when measuring near that signal level.
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RaySafe Xi User Manual – R/F Measurement

MAMMOGRAPHY MEASUREMENT
6 cm
Place the detector along the X-ray tube axis (with the cable end pointing towards the X-ray machine). For kV
measurements, make sure that the center of the MAM sensor square is placed 6 cm from the examination table
front edge. Dose and HVL can be measured from other positions as well.
The following concerns Unfors Xi Platinum, not RaySafe Xi:
NOTE! When measuring on mammography machines with carbon fibre table, we recommend not to
use the power adapter to charge Xi, or use something that creates at least a 5mm distance
between the table and the detector, such as a plastic plate.
SPECIAL MEASUREMENT CASES
The table below indicates when to use filter for kV measurements.
Beam quality Filter Comment
Mo/Mo No filter
Mo/Rh 2 mm Al
W/Rh No filter
W/Al 20–39 kV No filter
W/Al 40–49kV 2 mm Al Use the R/F high detector
W/AlScanning 2 mm Al
Mo/Rh
When measuring kV with Mo/Rh, use the included 2mm Al filter. Follow the instructions printed on the filter.
14
RaySafe Xi User Manual – Mammography Measurement

W/Al Scanning (separate detector)
When measuring kV on W/Al Scanning, use the included 2 mm Al filter. Follow the
instructions printed on the filter. Please use the dedicated detector holder. Be sure
to push it tight to the examination table front. For more information, see the
separate mammography W/Al Scanning Quick Guide (enclosed with the holder).
SCANNING
NOTE! Some of the scanning W/Al mammography machines have inhomogenous radiation fields. A
consequence of this is that the position of the detector is very important. Also, detectors of
dierent viewing angles will result in dierent dose readings.
W/Al (Hologic)
To measure kV in the range of 40-49 kV (W/Al), the R/F MAM detector and a 2 mm Al filter is needed. Set the
detector to R/F-high (see R/F Measurement). When measuring in Combo mode on Hologic Selenia Dimensions
3D, use the sensor menu choice “Combo” and 7 s Calc. delay (located in the Setup Menu).
1. SENSOR MENU
Mammography Sensor for mammography measurements with submenu for
selection of beam qualities, see list to the right (depending
on configuration). The choice of “paddle” or “no paddle” only
applies if the kV measurement is going to be made with or
without a paddle in the beam and does not aect dose or HVL
measurements.
Mo/Mo No Paddle
Mo/Mo Paddle
Mo/Rh
Mo/Al
Rh/Rh
Rh/Al
W/Rh No Paddle
W/Rh Paddle
W/Rh* No Paddle
W/Rh* Paddle
W/Ag
W/Al S (scanning)
W/Al No Paddle
W/Al Paddle
Combo
NOTE! Select W/Rh* for measurements on Fujifilm Amulet Innovality, Fujifilm Aspire Cristalle, Fujifilm
Aspire HD Plus, Fujifilm Aspire HD-s, Fujifilm Amulet f, Fujifilm Amulet s, Planmed Clarity 2D,
Planmed Clarity 3D, Planmed Nuance, Planmed Nuance Excel, IMS Giotto Tomo and Hologic
Selenia (W). W/Al S (scanning) is on a separate detector.
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RaySafe Xi User Manual – Mammography Measurement

2. MEASURE MODE
The displayed values are updated after each exposure.
kV kV (Mo/Mo, optional: Mo/Rh, W/Rh, W/Al and W/Al scanning)
Dose Gy (Air kerma, free in air) or R (Exposure)
Dose rate Gy or R per s, m or h
Time ms, s
HVL mm Al
mAs mAs (requires RaySafe Xi base unit with mAs)
mA mA (requires RaySafe Xi base unit with mAs)
3. SETUP MENU
Press SELECT to enter the SETUP MENU (from MEASURE MODE) and STEP to step between setup
parameters.
All values are stored in a non-volatile memory and are valid until manually changed. At start up (after the
battery status information), valid Trig delay, kVp delay and Calc. delay are displayed in sequence.
(Factory settings in bold.)
Trig delay A delay in ms after the normal trig of the RaySafe Xi. Utilize when an unwanted part
of an exposure, such as a pre-pulse, should be excluded from the measurement. No
measurements are performed during the Trig delay. (0, 5, 10, 50, 100, 200, 500, 1000,
2000 ms)
Trig level Use Trig level to measure correct exposure time on waveforms with slowly increasing
output, such as with single phase dental. The default setting is a low value, that depends
on the selected sensor; see Specifications. Can be set to 25, 50 or 75 % of the peak
value of the previous exposure. Use it with the same generator settings and FDD. Not
selectable before the first exposure or at low dose rates.
kVp delay Defined as the delay in ms, after the trig delay, but before the radiation and kV waveform
window (in the RaySafe Xi view) begins. (0, 2, 5, 10, 50, 150, 300, 1000, 1200, 1500, 1700,
2000 ms)
Calc. delay Defined as the dead time after end trig, before data is calculated. Default is 0.5 s but it
is recommended to use 2 s when measuring on generators with a pre-pulse.
(0.5, 2, 4, 6, 7s)
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RaySafe Xi User Manual – Mammography Measurement

Dose unit Change the default units and/or use this feature to recalculate a value to a dierent unit.
(Gy or R per s, m or h, where 1Gy=114.1R)
Backlight Display lighting option. (o, 2, 5, 10 s, on)
Auto Power O Never, or after 5, 20 or 60 minutes of inactivity.
Info Displays the serial number (S/N) and firmware version of the connected detector and
the RaySafe Xi base unit and the calibration date for the selected sensor. There is also a
possibility to reset the instrument settings to factory defaults.
17
RaySafe Xi User Manual – Mammography Measurement

TRANSPARENT MEASUREMENT
Position the detector with the sensor towards the X-ray source.
1. SENSOR MENU
Transparent Sensor for measurements on systems with automatic exposure control.
Press STEP to step between sensors and SELECT to select a sensor.
2. MEASURE MODE
The displayed values are updated after each exposure, or continuously after 4 seconds of fluoroscopy.
Dose Gy (Air kerma, free in air) or R (Exposure)
Dose rate Gy or R per s, m or h
Time ms, s
Pulses pulses
Frame rate frames/s
Dose per frame Gy or R
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RaySafe Xi User Manual – Transparent Measurement

3. SETUP MENU
Press SELECT to enter the SETUP MENU (from MEASURE MODE) and STEP to step between setup
parameters.
All values are stored in a non-volatile memory and are valid until manually changed. At start up (after the
battery status information), valid Calc. delay is displayed.
(Factory settings in bold.)
Calc. delay Defined as the dead time after end trig, before data is calculated. Default is 0.5 s but it is
recommended to use a longer delay when measuring on pulsed fluoroscopy where the
time between pulses may exceed 0.5 s. (0.5, 2, 4, 6, 7 s)
Dose unit Change the default units and/or use this feature to recalculate a value to a dierent unit.
(Gy or R per s, m or h, where 1 Gy=114.1 R.)
Backlight Display lighting option. (o, 2, 5, 10 s, on)
Auto Power O Never, or after 5, 20 or 60 minutes of inactivity.
Info Displays the serial number (S/N) and firmware version of the connected detector and
the RaySafe Xi base unit and the calibration date for the selected sensor. There is also a
possibility to reset the instrument settings to factory defaults.
19
RaySafe Xi User Manual – Transparent Measurement

CT MEASUREMENT
The RaySafe Xi CT detector is an ion chamber with a 10 cm active length and a built-in bias voltage. The center
and the edges (+ 5 cm and - 5 cm) of the active volume are marked on the phantom adapter.
An automatic correction of temperature and pressure will be applied for all dose measurements. The
temperature sensor is positioned inside the active ionization chamber and the measurement is corrected for
the true temperature inside the phantom. The pressure sensor is placed inside the RaySafe Xi CT detector
housing and is calibrated to show the actual pressure at the measurement facility’s altitude. Readings of
pressure can therefore vary from announcements in newspapers or web sites, which normally refer to the
pressure at sea level. The measured temperature and pressure for each exposure can be displayed when using
the RaySafe Xi view.
HOW TO MEASURE CT DOSE
Position the RaySafe Xi CT detector in the phantom adapter and then into the phantom position. Turn on the
meter and select CT dose.
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RaySafe Xi User Manual – CT Measurement