SEAWARD Uni Therm Faster And Easier Testing And Calibration
Introduction
The high-performance Rigel Uni-Therm accurately measures the performance of electrosurgical generators. Measurements include high frequency leakage, high power current and power distribution, and patient return plate alarm testing. A newly designed ultra-low inductive load bank provides highly accurate and stable test conditions at high frequency currents. Utilising a large, full colour graphical display, the Rigel Uni-Therm is a fully stand-alone electrosurgical analyser that can offer true intuitive, user friendly operation and operator safety.
Tests can be carried out on an individual basis (see chapter 2) and as part of an automatic sequence (see chapter 3). Data can be stored, viewed and transferred from within the instrument (see chapter 4). Customisation of the Rigel Uni-Therm can be carried out in the setup (see chapter 6).
Analyzer Functions
The Rigel Uni-Therm is able to measure the following parameters both automatically and manually;
- Power Test (W, mA rms, V peak and crest factor)
- HF Leakage (mA rms)
- Peak and Peak to Peak voltage
- Plate Security (CQM) or return electrode monitoring (REM)
For the power test, an internal array of resistors provides a safe variable load of 0- with an instant tabular view of test results. A unique feature of the HF leakage test is on screen graphics illustrating correct test connection configurations, complete with user set pass fail limits. The plate security (CQM) test offers a unique isolated, motor driven potentiometer, which provides a continuous swept resistance change; enabling accurate and fast testing of alarms, complete with user set pass fail limits. Any future firmware upgrade can be efficiently installed by users, without risk to stored data. The Rigel Uni-Therm forms part of a comprehensive range of high-performance specialist biomedical test equipment supplied by Rigel Medical, part of the Seaward Group.
Key Features
- Fully compliant with IEC 60601-2-2 One instrument for full compliance testing offering peace of mind
- Accurate and Safe Utilising full 10kV isolation on all measuring systems
- High current test capability Allows accurate calibration and measurement of currents up to 8A.
- High Frequency Leakage Easy to connect with on screen help for each configuration
- Power distribution curves – Variable load with full 10kV isolation from 0 to 5115Ω in 5Ω steps Accurate, fast, and flexible
- Voltage measurements: RMS, Peak as well as Peak to Peak voltage
- Plate Security (CQM) test using electronic potentiometer range up to 475Ω in 1 Ω steps with high and low alarms
- Stand-alone Not relying on PC or laptop.
- Stylish and rugged enclosure with small footprint ideal for in-situ testing
- Graphic colour user interface – for fast and easy navigation and connection to DUT
- Future upgrade ready download future upgrades from the web into your tester
Rigel Uni-Therm Includes
1. Rigel Uni-Therm
2. Calibration Certificate
3. Mains Power Lead
4. USB Lead
5. 3 x Jumper Links (p/n 367A954)
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1.4. Optional Accessories
• Foot switch adaptor cable set (manufacturer specific, please specify)
• Trolley style hard carry case
• SMB to BNC Oscilloscope connection lead (p/n 367A950)
Full accessory list available at:
https://www.rigelmedical.com/gb/products/electrosurgery/accessories/
1.5. Warnings and Cautions
Before you power up – Ensure the mains switch positioned at the base panel of the Rigel
Uni-Therm is set to the appropriate voltage range i.e., 230VAC or 120 VAC.
Before you power up – Ensure none of the ventilation holes are covered during operation
including the ones on the base panel. We strongly recommend positioning the Rigel UniTherm on its two hinged feet at the front base.
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2. Uni-Therm Interface
Function
Keys F1-F4
Simulation
Panel
Rotary
Encoder
Stop/End
Button
Start
Button
ON/OFF
Button
Folding
Legs
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2.1. Simulation Panel
Do not connect any active power electrodes to the simulation panel of the Rigel
Uni-Therm. Failure to comply with this will void the warranty and might lead to
internal damage of circuits.
2.2. Side panel
*Note: The scope output (SMB connector) provides an 10kV isolated waveform monitoring
output however the scope output is not calibrated.
CQM/ REM
output
connection
(Black)
CUT
footswitch
control
output
(Yellow)
COAG
footswitch\
control
output
(Blue)
HF Leakage
Connections
Oscilloscope
output*
Measuring Device
Connections (White)
Measuring Device
Connections (White)
0-5115 Ω
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3. Getting Started
The Rigel Uni-Therm has been designed to ensure that the user is able to test quickly,
easily and safely. The interfaces to the Rigel Uni-Therm have been segregated into a highvoltage area (side panel) and a safe low voltage area (front panel). This arrangement also
ensures that test leads carrying high frequency power are kept as short as possible, and
directly facing the equipment under test.
3.1. Connecting your Analyser
Elevate the Rigel Uni-Therm on its two hinged feet at the front base.
Ensure none of the large base and rear ventilation inlets are obstructed during
operation.
3.2. Simulation connection panel
For automatic control during HF leakage and Power tests, connect the ESU footswitch
COAG and CUT contacts to the blue and yellow terminals.
It is strongly advised to always use the Rigel Uni- -in, automatic control
rather than manually switching the output of the electrosurgical diathermy
machine under test.
For CQM / plate security test use the black terminals.Follow the on-screen instruction diagrams for correct test connection. See appendices A
and B for embedded connection diagrams. Connect the ESU active and neutral
electrodes to the side panel as indicated, also fit jumper links (positions 1, 2, 3, 4) as
required to complete circuits.
Note: Each connection diagram has a unique reference code. e.g.,
3.4. Home screen
Upon power-up of the Rigel Uni-Therm, the display will be showing the HOME SCREEN;
0-5115 Ω
ON F1 F2 F3 F4
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4. Manual Mode
The manual mode provides the user with the features for testing a specific individual
function and or test condition; for example, to aid fault diagnostic procedures. These tests
are available from the home screen.
Available tests are:
• CQM / REM test
• High Frequency Leakage
• Power Test
4.1. Contact Quality Monitoring (CQM) or REM test
This test will control a motor driven potentiometer to trigger the neutral (patient plate)
alarm on electrosurgical generators by simulating fault conditions (i.e., resistance too high
or too low, a variation in resistance etc). The variable resistance (0 475 Ω) is connected to
the two black connectors on the front panel.
Select the CQM / REM test from the home screen shown below.
During the initial CQM / REM test selection, the Rigel Uni-Therm will auto-calibrate the
CQM / REM potentiometer;
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Once the calibration has completed, the CQM / REM test screen will appear;
Select automatic (up or down) or manual (up or down) control by using the dedicated
AUTO MAN key. This key is also used to set the limits. Once the SET LIMITS field is
highlighted in green, use and press the rotary encoder to manipulate the UP and DOWN
limits.
Press the Green button to start the test (for automatic mode only). Then capture the alarm
In MANUAL UP and DOWN mode, the rotary encoder is used to directly control the
potentiometer. Th
4.2 High Frequency (HF) Leakage
The HF Leakage test measures the HF leakage current in various test configurations (see
appendix A) and compares the result to a user set pass/fail value. Select the HF LEAKAGE
test from the main menu, shown below.
Use the rotary encoder to navigate the screen
Select the required setting and press the rotary encoder to activate the field. Once
activated, use the rotary encoder to change the settings. Confirm and de-activate the field
by pressing the encoder once again.
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START DELAY will allow the user to set a measurement delay for generators operating in a
soft start mode.
The TEST TIME will display the total test time of the leakage test and dictate the number
of tests done as a result of the selected ON TIME and OFF TIME.
Note: the D/CYCLE is limited to 50% or less during the leakage test with a maximum ON
time of 15 seconds. To increase the ON TIME, the OFF TIME must be increased first in order
to remain within the duty cycle limits. This is done to protect the EUT from overheating. If
the selected ON / OFF time is above the 50% duty cycle (the Uni-Therm will calculate this
automatically), the dut
reducing the duty cycle. A valid duty cycle will appear in black.
Press NEXT to confirm and start selecting the appropriate leakage tests.
Four different measurement scenarios have been described in the particular standard IEC
60601-2-2; See appendix A for all available leakage settings.
Use the rotary encoder to change between the different leakage configurations. Use the
DIAGRAM mode, shown below, or the IEC 60601-2-2 reference details (SHOW DETAIL).
The rotary encoder can be used to scroll the different test setups, or to SET LOAD and
LEAKAGE LIMIT values. The selected field is highlighted in red. Press the rotary encoder to
activate the field (field turn blue) and use the rotary encoder to change the settings. Press
the rotary encoder again to confirm
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Return to the DIAGRAM mode by using the SHOW DIAGRAM fast key.
Start the test by pressing the RUN button, and confirm with the green START button on
the front of the Uni-Therm;
The Rigel Uni-Therm could display the following details after the test;
Press the HOLD key to freeze the reading on the screen. The test can be aborted by
pressing the red STOP button on the front of the Uni-Therm.
After a test is completed (either PASS or FAIL) press the green START button on the front
of the Uni-Therm.
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4.3. Power Test
The output power of the Active Electrodes (CUT / COAG and BIPOLAR) is measured, either
at a fixed load (Continuous Single Test) or at a range of loads (Power Distribution Graph).
The load will vary from a start value to an end value with a number of intervals (resolution).
The Rigel Uni-Therm will control the EUT by using the internal footswitch controller.
Select Power test from the home screen; then select F2 (CONT) F3 (GRAPH) or F4 (EXT)
modes using the fast keys; to select either the Continuous, Graph or External Load test.
Use the rotary encoder or the dedicated function keys to navigate.
4.3.1. Continuous Mode
The continuous mode allows the user to monitor the power characteristics under a
specific load condition.
Ensure that the power settings on the EUT do not exceed those specified in the
Load Power rating Rigel Uni-Therm.
Use the rotary encoder to navigate the screen. The selected field is marked with a red
border, presses the rotary encoder to activate the field to allow changes. Confirm and deactivate the field by pressing the encoder once again.
Documents / Resources
 |
SEAWARD Uni Therm Faster And Easier Testing And Calibration [pdf] User Guide Uni-Therm, Rigel 377, Uni Therm Faster And Easier Testing And Calibration, Uni Therm, Faster And Easier Testing And Calibration, Easier Testing And Calibration, Calibration |