Fluke VT Plus HF User manual

VT Plus HF
Gas Flow Analyzer
Operators Manual
PN 2137275
May 2005
© 2005 Fluke Corporation. All rights reserved. Printed in USA
All product names are trademarks of their respective companies

Gas Flow Analyzer
Notices
i
Notices
Fluke Biomedical
6920 Seaway Blvd.
Everett, WA 98203 USA
Customer Support and Sales:
USA and Canada: 800-648-7952
Outside USA: 775-883-3400 •
E-mail: [email protected]
Internet: http://www.flukebiomedical.com
Service:
USA and Canada: 888.993.5853
Outside USA: 425.446.5560
E-Mail servic[email protected]
References in this manual to Bio-Tek International, Inc. and DNI Nevada, refer to companies that
are now owned by Fluke Biomedical.
All Rights Reserved
Copyright 2005, Fluke Biomedical. No part of this publication may be reproduced, transmitted,
transcribed, stored in a retrieval system, or translated into any language without the written
permission of Fluke Biomedical.
Restrictions and Liabilities
Information in this document is subject to change and does not represent a commitment by Fluke
Biomedical. Changes made to the information in this document will be incorporated in new
editions of the publication. No responsibility is assumed by Fluke Biomedical for the use or
reliability of software or equipment that is not supplied by Fluke Biomedical, or its affiliated
dealers.
Claims
Our routine method of shipment is via common carrier, FOB origin. Upon delivery, if physical
damage is found, retain all packing materials in their original condition and contact the carrier
immediately to file a claim.
If the instrument is delivered in good physical condition but does not operate within specifications,
or if there are any other problems not caused by shipping damage, please contact Fluke
Biomedical or your local sales representative.
Certification
This instrument was thoroughly tested and inspected. It was found to meet Fluke Biomedical’s
manufacturing specifications when it was shipped from the factory. Calibration measurements are
traceable to the National Institute of Standards and Technology (NIST). Devices for which there are
no NIST calibration standards are measured against in-house performance standards using
accepted test procedures.
Obtaining Assistance
If you have trouble operating the VT Plus HF, or just need some clarification on its operation,
contact Fluke Biomedical’s Technical Assistance Center at 800-648-7952.
Manufacturing Location
Fluke Biomedical
6920 Seaway Blvd.
Everett, WA. USA.

VT Plus HF
Operators Manual
ii
Safety Considerations
Warnings and Cautions
Use of this instrument is restricted to qualified personnel who recognize shock hazards and are
familiar with safety precautions used when operating electrical equipment. Read the manual
carefully before operating the VT PLUS HF.
 The following warning and informational symbols may be found on the VT PLUS HF.
Symbol Description
Alternating current
Caution: refer to accompanying
documentation
Off (power: disconnection from mains)
On (power: connection to mains)
Caution: risk of electric shock
Direct / alternating current
Direct current
Protective earth (ground)
Inspect the lead ends for possible wear, cracks, or breaks before each use.
If operating the VT PLUS HF at 110 and 220 volts, turn the power switch to the OFF
position before changing the supply voltage.

Gas Flow Analyzer
Safety Considerations
iii
Hazard Warnings
Warning! Power Rating. The VT PLUS HF mains power input must be
connected to an external power supply that provides voltage and current within
the specified rating for the system.
Warning! Internal Voltage. Always turn off the power switch and unplug the
power cord before cleaning the outer surface of the VT PLUS HF.
Warning! Liquids. Avoid spilling liquids on the analyzer; fluid seepage into
internal components creates a potential shock hazard. Do not operate the
instrument if internal components are exposed to fluid.
Precautions
The following precautions are provided to help you avoid damaging the system:
 Caution: Service. Authorized service personnel should service the VT PLUS
HF. Only qualified technical personnel should perform troubleshooting and
service procedures on internal components.
Caution: Environmental Conditions. Do not expose the system to temperature
extremes. Ambient temperatures should remain between 18-40°C. System
performance may be adversely affected if temperatures fluctuate above or below
this range.
Caution: Do NOT Immerse. Clean only with a mild detergent, and gently wipe
down with a clean, lint-free cloth.

VT Plus HF
Operators Manual
iv
Applicable Testing Standards
The VT PLUS HF has been tested by an independent laboratory and meets the requirements
listed here.
Safety Requirements
USA UL 3101-1, Electrical Equipment for Laboratory Use;
Part 1: General Requirements.
Canada CAN/CSA C22.2 No. 1010.1 (1992), Safety Requirements for
Electrical Equipment for Measurement, Control and Laboratory
Use, Part 1: General Requirements.
EC Directive
73/23/EEC
EN 61010-1, Safety requirement for electrical equipment for
measurement, control and laboratory use, Part 1: General
Requirements.

Gas Flow Analyzer
Applicable Testing Standards
v
Electromagnetic Interference and Susceptibility
 USA FCC Class A
Warning: Changes or modifications to this unit not expressly approved by the manufacturer
could void the user's authority to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. Like all similar equipment, this equipment
generates, uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause interference,
in which case the user will be required to correct the interference at his/her own expense.
 Canadian Department of Communications Class A
This digital apparatus does not exceed Class A limits for radio emissions from digital apparatus
set out in the Radio Interference Regulations of the Canadian Department of Communications.
Le present appareil numerique n'met pas du bruits radioelectriques depassant les limites
applicables aux appareils numerique de la Class A prescrites dans le Reglement sur le brouillage
radioelectrique edicte par le ministere des Communications du Canada.

VT Plus HF
Operators Manual
vi
Based on the testing standards below,
this device bears the
mark.
EC Directive 89/336/EEC Electromagnetic Compatibility
 Emissions - Class A
The system has been type tested by an independent, accredited testing laboratory and found to
meet the requirements of EN 61326-1:1998 for Radiated Emissions and Line Conducted
Emissions. Verification of compliance was conducted to the limits and methods of the following:
CISPR 16-1:1993 and CISPR 16-2:1996
 Immunity
The system has been type tested by an independent, accredited testing laboratory and found to
meet the requirements of EN 61326-1:1998 for Immunity. Verification of compliance was
conducted to the limits and methods of the following:
EN 61000-4-2 (1991) Electrostatic Discharge
EN 61000-4-3 (1995) Radiated EM Fields
EN 61000-4-4 (1995) Electrical Fast Transient/Burst
EN 61000-4-5 (1995) Surge Immunity
EN 61000-4-6 (1996) Conducted Disturbances
EN 61000-4-11 (1994) Voltage Dips, Short Interruptions and Variations
EC Directive 73/23/EEC Low Voltage (User Safety)
The system has been type tested by an independent testing laboratory and found to meet the
requirements of EC Directive 73/23/EEC for Low Voltage. Verification of compliance was
conducted to the limits and methods of the following:
EN 61010-1 (1993) and IEC 1010-1
“Safety Requirements for Electrical Equipment for Measurement, Control and Laboratory
Use, Part 1: General requirements” (including amendments 1 and 2).

Gas Flow Analyzer
Warranty
vii
Warranty
Fluke Biomedical warrants this instrument against defects in materials and workmanship for one
full year from the date of original purchase. During the warranty period, we will repair or, at our
option, replace at no charge a product that proves to be defective, provided you return the
product, shipping prepaid, to Fluke Biomedical. This warranty does not apply if the product has
been damaged by accident or misuse or as the result of service or modification by other than
Fluke Biomedical. IN NO EVENT SHALL FLUKE BIOMEDICAL BE LIABLE FOR
CONSEQUENTIAL DAMAGES.
Only serialized products and their accessory items (those products and items bearing a distinct
serial number tag) are covered under this one–year warranty. PHYSICAL DAMAGE CAUSED BY
MISUSE OR PHYSICAL ABUSE IS NOT COVERED UNDER THE WARRANTY. Items such as
cables and nonserialized modules are not covered under this warranty.
Recalibration of instruments is not covered under the warranty.
This warranty gives you specific legal rights, and you may also have other rights which vary from
state to state, province to province, or country to country. This warranty is limited to repairing the
instrument to Fluke Biomedical’s specifications.
Warranty Disclaimer
Should you elect to have your instrument serviced and/or calibrated by someone other than Fluke
Biomedical, please be advised that the original warranty covering your product becomes void
when the tamper-resistant Quality Seal is removed or broken without proper factory authorization.
We strongly recommend, therefore, that you send your instrument to Fluke Biomedical for factory
service and calibration, especially during the original warranty period.
In all cases, breaking the tamper-resistant Quality Seal should be avoided at all cost, as this seal
is the key to your original instrument warranty. In the event that the seal must be broken to gain
internal access to the instrument, you must first contact Fluke Biomedical’s Technical Assistance
Department at 775-883-3400. You will be required to provide the serial number for your
instrument as well as a valid reason for breaking the Quality Seal. You should break this seal only
after you have received factory authorization. Do not break the Quality Seal before you have
contacted us. Following these steps will help ensure that you will retain the original warranty on
your instrument without interruption.

VT Plus HF
Operators Manual
viii
Contents
Notices................................................................................................................................. i
All Rights Reserved............................................................................................... i
Restrictions and Liabilities ..................................................................................... i
Claims ................................................................................................................... i
Certification............................................................................................................ i
Obtaining Assistance............................................................................................. i
Manufacturing Location ......................................................................................... i
Safety Considerations..........................................................................................................ii
Warnings and Cautions .........................................................................................ii
Applicable Testing Standards .............................................................................................iv
Safety Requirements ............................................................................................iv
Electromagnetic Interference and Susceptibility ................................................... v
EC Directive 89/336/EEC Electromagnetic Compatibility .....................................vi
EC Directive 73/23/EEC Low Voltage (User Safety).............................................vi
Warranty ............................................................................................................................vii
Warranty Disclaimer...........................................................................................................vii
Contents ........................................................................................................................... viii
1 Overview
Introducing the VT PLUS HF ........................................................................................... 1-1
Optional Accessories ....................................................................................................... 1-2
Theory of Operation......................................................................................................... 1-2
Pressure Measurements ................................................................................... 1-2
Oxygen Measurements ..................................................................................... 1-4
Flow Measurements .......................................................................................... 1-4
Breath Detection................................................................................................ 1-6
Calculated Parameters ...................................................................................... 1-8
About This Manual........................................................................................................... 1-9
2 Installation
Unpacking and Inspection................................................................................................ 2-1
Connecting the VT PLUS HF........................................................................................... 2-2
Pneumatic Connections..................................................................................... 2-2
Quick Installation/Operations Guide .................................................................. 2-3
Bi-directional Flow Mode ................................................................................... 2-3
Uni-directional Flow Mode ................................................................................. 2-4
Inspiratory Testing............................................................................................. 2-4
Expiratory Testing.............................................................................................. 2-4
Attaching the Printer Cable .............................................................................................. 2-6
3 Keypad Functions
VT PLUS HF Keypad Functions ...................................................................................... 3-1
4 System Setup
Using the Setup Screen................................................................................................... 4-1
Settings............................................................................................................................ 4-2
Gas Settings...................................................................................................... 4-2
Gas Temperature .............................................................................................. 4-4
Ambient Temperature........................................................................................ 4-4
Relative Humidity............................................................................................... 4-4
Correction Mode................................................................................................ 4-5
Barometric Pressure Units................................................................................. 4-5
Barometric Pressure.......................................................................................... 4-5
Breath Detection................................................................................................ 4-6
Breath Detect Threshold.................................................................................... 4-6
Inspiratory versus Expiratory Tidal Volumes...................................................... 4-7