Recorder/Controller Steriliser Application Block imagine making the

Recorder/Controller Steriliser Application Block imagine making the
Recorder/Controller
Steriliser Application Block
imagine making the
impossible possible
imagine bigger better smaller, we did. We combined our extensive expertise in
absolute data security and world class control to bring you the best in recording and
control in a space-saving, small box with a superb full colour display and it is called
the nanodac™ recorder/controller. Add to this, an absolute commitment to
technological innovation, constant reinvestment in research and development, and a team
of engineering oriented salesmen who understand your process requirements; we can
and do imagine making the impossible possible for our customers.
nanodac Recorder/Controller
Steriliser Application Block
The nanodac recorder/controller offers the ultimate in graphical recording combined with PID control for a box of its size.
The compact ¼ DIN panel mount unit offers four high accuracy universal inputs for data recording and PID control. This
secure data recording device with accurate control is enhanced by a full colour, ¼ VGA, 320 x 240 pixel display to bring a
crystal clear operator interface to even the smallest of machines.
In order to assist with the Decontamination process the Invensys Eurotherm R&D
resource worked with a number of Steriliser manufacturers to develop a solution
for the Independent Monitoring System (IMS). The resulting Sterilisation
Application provides cycle based data logging and monitoring. In addition the
intuitive display provides instantaneous information on the status of the Sterilisation
cycle. The Steriliser Application supports up to four process variables, (Chamber
Temperature, Chamber Pressure and Air
Detector being the three primary
variables) and is suitable for use with
Porous Load, Dry Heat, Flash, and LTS
Sterilisers or for those sterilisers requiring
no more than four process variables.
The recording functionality within the nanodac instrument
contains decades of knowledge and understanding of the
requirements of capturing and storing electronic data. We
understand that different applications have different needs
and the nanodac recorder can store your information in either
open CSV format or in a secure, check summed format to
protect data integrity. Whichever format you choose for your
process we have the tools to help you keep this data safe, get
it to the place you need, and in the format you require.
Wait Start
Waiting
Equilibration
Sterilisation (Holding Time)
Overheat
Band High
Inp
ut
1
Target Setpoint
Eqilibration starts when
input 1 reaches setpoint
Cycle Start
Photograph courtesy of BMM Weston Ltd
www.eurotherm.com/nanodac
Sterilisation starts when
slowest input reaches setpoint
Band Low
imagine bigger
better smaller
Display Information
Cycle
Remaining
Target time
A five-digit counter to indicate the total
number of cycles.
The sterilising time remaining for the current cycle. The display field is
replaced by ‘Target Time’ when the cycle is not running.
The intended
sterilisation time.
Status
Wait start:
Waiting:
Equilibration:
Sterilising:
Passed:
Failed:
Test cycle:
The initial state at power up. This status remains until the
first cycle is initiated.
Waiting for input 1 to reach its target setpoint. The cycle
then enters Equilibration.
Currently in the equilibration period, during which the
cycle waits until all inputs have reached sterlisation
conditions.
Currently in the decontamination phase
The cycle has completed successfully
The cycle has failed either through one or more inputs
becoming invalid, or because the ‘Start’ signal was
removed.
A test cycle is in progress
Input values
Total Cycle
Temperatures are required
in °C; pressure inputs in
mBar. If necessary, maths
channels and user values
can be used to convert from
other units.
The elapsed time since the
initiation of the current
cycle. This time increments
from the time the cycle is
triggered until the time the
trigger is removed.
Equilibration
The ‘Holding Time’ is preceded by a period during which
the load has not yet fully attained temperature due to its
thermal inertia. ‘Equilibration time’ is defined as the time
between the attainment of sterilisation temperature in the
chamber, and the attainment of that temperature in all parts
of the load.
F0 (Lethality)
F0 is a means of calculating the ‘equivalent time at sterilising temperature’ for temperatures below, at, and above sterilising
temperature, using the equation below.
FVALUE To calculate the equivalent time at sterilising temperature (for temperatures below, at and above sterilising
temperature) both in dry (FH) and steam (FO) sterilising environments, we use the following equation:
Fvalt = Fvalt1–T + T x 10
Where Fvalt
Fvalt–1
T
mat
Target temp
Z
=
=
=
=
=
=
=
mat – Target temp
Z
F value at time t (minutes)
F value last iteration
Internal recorder iteration interval (minutes)
Value of temperature measuring channel
121.1˚C for FO; 170˚C for FH
Temperature interval representing a factor-of-10 reduction in killing efficiency
10˚C for FO; = 20˚C for FH
Where:
Sterilisation time Depends on the application,
typically 1 minute at Ts = 121°C.
Temp The value of the temperature measuring input.
Ts Desired sterilising temperature.
Z Temperature interval representing a factor of ten
reduction in killing efficiency. Z = 10 for steam
sterilising (F0); Z = 20 for dry heat sterilising (FH); Z =
10 for thermal disinfection (A0).
To ensure that steriliser loads that contain materials
with different thermal inertias are thoroughly sterilised,
a number of sensors are located within the load. The
‘F’ value should be calculated using the sensor closest
to that part of the load which has the highest thermal
inertia. For maximum accuracy, the temperature sensor
should be calibrated and the input adjust function
used to compensate for any inaccuracy found.
www.eurotherm.com/nanodac
Eurotherm is also represented in the
following countries:
Eurotherm:
International sales and service
www.eurotherm.com
AUSTRALIA Melbourne
Invensys Process Systems
Australia Pty. Ltd.
T (+61 0) 8562 9800
F (+61 0) 8562 9801
E [email protected]
AUSTRIA Vienna
Eurotherm GmbH
T (+43 1) 7987601
F (+43 1) 7987605
E [email protected]
BELGIUM & LUXEMBOURG
Moha
Eurotherm S.A./N.V.
T (+32) 85 274080
F (+32) 85 274081
E [email protected]
BRAZIL Campinas-SP
Eurotherm Ltda.
T (+5519) 3707 5333
F (+5519) 3707 5345
E [email protected]
CHINA
Eurotherm China
T (+86 21) 61451188
F (+86 21) 61452602
E [email protected]
INDIA Mumbai
Invensys India Pvt. Ltd.
T (+91 22) 67579800
F (+91 22) 67579999
E [email protected]
SWITZERLAND Wollerau
Eurotherm Produkte (Schweiz) AG
T (+41 44) 7871040
F (+41 44) 7871044
E [email protected]
IRELAND Dublin
Eurotherm Ireland Limited
T (+353 1) 4691800
F (+353 1) 4691300
E [email protected]
UNITED KINGDOM Worthing
Eurotherm Limited
T (+44 1903) 268500
F (+44 1903) 265982
E [email protected]
ITALY Como
Eurotherm S.r.l
T (+39 031) 975111
F (+39 031) 977512
E [email protected]
U.S.A. Ashburn VA
Invensys Eurotherm
T (+1 703) 724 7300
F (+1 703) 724 7301
E [email protected]
ED64
KOREA Seoul
Invensys Operations Management
Korea
T (+82 2) 2090 0900
F (+82 2) 2090 0800
E [email protected]
NETHERLANDS Alphen a/d Rijn
Eurotherm B.V.
T (+31 172) 411752
F (+31 172) 417260
E [email protected]
Beijing Office
T (+86 10) 5909 5700
F (+86 10) 5909 5709/10
E [email protected]
POLAND Katowice
Invensys Eurotherm Sp z o.o.
T (+48 32) 7839500
F (+48 32) 7843608/7843609
E [email protected]
FRANCE Lyon
Eurotherm Automation SA
T (+33 478) 664500
F (+33 478) 352490
E [email protected]
SPAIN Madrid
Eurotherm España SA
T (+34 91) 6616001
F (+34 91) 6619093
E [email protected]
GERMANY Limburg
Eurotherm Deutschland GmbH
T (+49 6431) 2980
F (+49 6431) 298119
E [email protected]
SWEDEN Malmo
Eurotherm AB
T (+46 40) 384500
F (+46 40) 384545
E [email protected]
Represented by:
© Copyright Eurotherm Limited 2011
Invensys, Eurotherm, the Eurotherm logo, Chessell, EurothermSuite, Mini8, Eycon, Eyris, EPower, nanodac, Foxboro and Wonderware are trademarks
of Invensys plc, its subsidiaries and affiliates. All other brands may be trademarks of their respective owners.
All rights are strictly reserved. No part of this document may be reproduced, modified, or transmitted in any form by any means, nor may it be stored
in a retrieval system other than for the purpose to act as an aid in operating the equipment to which the document relates, without
the prior written permission of Eurotherm Limited.
Eurotherm Limited pursues a policy of continuous development and product improvement. The specifications in this
document may therefore be changed without notice. The information in this document is given in good faith, but is
intended for guidance only.
Eurotherm Limited will accept no responsibility for any losses arising from errors in this document.
Part No. HA031086 Issue 1
Printed in England on recycled paper 08.11
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