Industrial Scientific Ventis LS User manual

(Revision 2)
Ventis LS
Multi-gas Monitor
Product Manual
Set-up
Operation
Service
17153965-1
Edition 2
Aug. 24, 2018
Multilingual
user documentation resources
available at
www.indsci.com/VentisLSresources
Chinese
French
German
Spanish
and more!

Ventis LS Product Manual
2© Industrial Scientific Corporation
Table Of Contents
Copyright Notice..........................................................................................................................................................3
Warnings and Cautionary Statements .......................................................................................................................3
General......................................................................................................................................................................3
Personnel...................................................................................................................................................................3
Hazardous Conditions, Poisons, and Contaminants..................................................................................................3
Factors that Affect Monitor Performance....................................................................................................................4
Certifications..............................................................................................................................................................4
Recommended Practices...........................................................................................................................................5
Ventis LS Resources ...................................................................................................................................................6
Ventis LS Capabilities..................................................................................................................................................6
Unpacking the Monitor................................................................................................................................................7
Contents.....................................................................................................................................................................7
Reporting a Problem..................................................................................................................................................7
Monitor Overview.........................................................................................................................................................8
Hardware Features and Functions.............................................................................................................................8
Display Screen...........................................................................................................................................................9
Alarms......................................................................................................................................................................11
Monitor Set-up............................................................................................................................................................13
Battery Properties ....................................................................................................................................................14
Charging the Lithium-ion Battery Packs...................................................................................................................14
Power-On and -Off...................................................................................................................................................15
Configuration............................................................................................................................................................16
Introduction ..........................................................................................................................................................16
Instructions...........................................................................................................................................................16
Monitor Use and Service ...........................................................................................................................................23
Zero, Calibration, and Bump Testing........................................................................................................................23
Introduction ..........................................................................................................................................................23
Prepare the gas cylinder for use ..........................................................................................................................25
Zero and Quick Calibration Process.................................................................................................................26
Quick Bump Test Process................................................................................................................................29
Recommended Practices for In-field Air Sampling...................................................................................................31
Cleaning...................................................................................................................................................................31
Service.....................................................................................................................................................................31
Battery Packs...................................................................................................................................................31
Sensor, Sensor Barrier, LCD, and Vibrating Motor Replacement ....................................................................32
Specifications and Certifications..............................................................................................................................35
Monitor Specifications..............................................................................................................................................35
Sensor Specifications...............................................................................................................................................35
Certifications............................................................................................................................................................36
Wireless certification................................................................................................................................................36
Warranty .....................................................................................................................................................................36
Limitation of Liability.................................................................................................................................................36

Ventis LS Product Manual
© Industrial Scientific Corporation 3
Copyright Notice
Ventis™ is a trademark of Industrial Scientific Corporation.
All trademarks and registered trademarks are the property of their respective owners.
These help materials or any part thereof may not, without the written consent of Industrial Scientific Corporation, be
copied, reprinted, or reproduced in any material form including but not limited to photocopying, transcribing,
transmitting, or storing it in any medium or translating it into any language, in any form or by any means, be it digitally,
electronic, mechanical, xerographic, optical, magnetic, or otherwise.
The information contained in this document is proprietary and confidential and all copyright, trademarks, trade names,
patents, and other intellectual property rights in the documentation are the exclusive property of Industrial Scientific
Corporation unless otherwise specified. The information (including but not limited to data, drawings, specification,
documentation, software listings, source or object code) shall not at any time be disclosed directly or indirectly to any
third party without prior written consent.
The information contained herein is believed to be accurate and reliable. Industrial Scientific Corporation accepts no
responsibility for its use by any means or in any way whatsoever. Industrial Scientific Corporation shall not be liable
for any expenses, costs by damage that may result from the use of the information contained within this document.
Although every effort is made to ensure accuracy, the specifications of this product and the content herein are subject
to change without notice.
Warnings and Cautionary Statements
General
IMPORTANT
Failure to perform certain procedures or note certain conditions may impair the performance of this
product. For maximum safety and optimal performance, please read and understand the Ventis LS
Product Manual available online at the Ventis LS Resource Center at
www.indsci.com/ VentisLSresources.
Personnel
CAUTION: For safety reasons, this equipment must be operated and serviced by qualified personnel only.
Read and understand the product manual completely before operating or servicing.
ATTENTION: Pour des raisons de sécurité, cet équipment doit étre utilesé entretenu et réparé uniquement par
un personnel qualifié. Étudier le manuel d'instructions en entier avant d'utiliser,
d'entretenir ou de réparer l'équipement.
Hazardous Conditions, Poisons, and Contaminants
WARNING: Servicing the unit, replacing or charging battery packs, or using the communications port must only
be done in an area known to be nonhazardous. Not for use in oxygen-enriched atmospheres.
WARNING: Power-off the monitor before servicing the unit or replacing the battery.
WARNING: Substitution of components may impair intrinsic safety and may cause an unsafe condition.
AVERTISSEMENT: La substitution de composants peut compomettre la securite intrinseque.
CAUTION: High off-scale readings may indicate explosive gas concentration(s).
ATTENTION: Des lectrures supérieures a l'échelle peuvent indiquer des concentrations explosives.
CAUTION: Any rapid up-scale reading followed by a declining or erratic reading may indicate gas
concentration(s) beyond the upper scale limit which may be hazardous.
Silicone compound vapors or other known contaminants may affect the combustible gas sensor and cause
readings of combustible gas to be lower than actual gas concentrations. If the monitor has been used in an
area where silicone vapors were present, always calibrate the monitor before next use to ensure accurate
measurements.

Ventis LS Product Manual
4© Industrial Scientific Corporation
Factors that Affect Monitor Performance
Oxygen-deficient atmospheres may cause combustible gas readings to be lower than actual concentrations.
Oxygen-enriched atmospheres may cause combustible gas readings to be higher than actual concentrations.
Sudden changes in atmospheric pressure may cause temporary fluctuations in the oxygen reading.
Verify the calibration of the combustible gas sensor after any incident where the combustible gas content has
caused the monitor to display an over-range condition.
Sensor openings and water barriers must be kept clean. Obstruction of the sensor openings and/or
contamination of the water barriers may cause readings to be lower than actual gas concentrations.
Do not use the ISC Alkaline battery pack (P/N:17150608) with the Ventis LS monitor.
The Ventis LS is CSA certified according to the Canadian Electrical Code for use in Class I, Division 1 and
Class I, Zone 1 Hazardous Locations within an ambient temperature range of Tamb: -20°C to +50°C. CSA has
assessed only the %LEL combustible gas detection portion of this instrument for performance according to
CSA Standard C22.2 No. 152. This is applicable only when the monitor has been calibrated to 50% LEL CH4.
CAUTION: CSA C22.2 No. 152 requires before each day’s usage, sensitivity must be tested on a known
concentration of pentane or methane equivalent to 25% or 50% of full scale concentration. Accuracy must be
within -0% to +20% of actual concentration. Accuracy may be corrected by referring to the zero/calibration
section of the Product Manual.
Certifications
The EC type examination certificate is DEMKO 11 ATEX 1104473 with marking code Ex d ia I Mb/Ex d ia IIC
T4 Gb for equipment category II 2G and I M2.
The IECEx examination certificate is IECEx UL11.0023 with marking code Ex d ia IIC T4 Gb.
The model Ventis LS complies with relevant provisions of European ATEX directive 94/9/EC and EMC
directive 2004/108/EC
The Ventis LS Multi-gas monitor is constructed with reference to published standards of directive 2006/95/EC,
to eliminate electrical risks and fulfill 1.2.7 of ANNEX II of directive 94/9/EC.
These detectors have been investigated for risk of explosion, fire, and electric shock only. They have not been
investigated for performance relative to their ability to detect gases or vapors.
The radio in the Industrial Scientific Ventis LS Portable Multi Gas monitor has been assessed to and found to
be below limits as defined in FCC; Innovation, Science and Economic Development Canada; and European
Council recommendation 1995/519/EC requirements for human exposure to electromagnetic fields.
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to
Part 15 B and C of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment. 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 harmful interference in which case the user will be required to correct the interference at
their expense.
•The instrument complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions:
•This device must accept any interference received, including interference that may cause undesired
operation.
Changes or modification made that are not expressly approved by the manufacturer could void the user’s
authority to operate the equipment.

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© Industrial Scientific Corporation 5
This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the
following two conditions: (1) this device may not cause interference, and (2) this device must accept any
interference, including interference that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de
licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de
brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le
brouillage est susceptible d'en compromettre le fonctionnement.
The Ventis LS Portable Multi Gas Monitor contains 1 radio communication module that generates radio
frequency energy. They frequency and output power are listed below:
Wifi Radio
Maximum Radiated Transmit Power
2405 to 2480 MHz
8.2 dBm (6.6 mW)
Recommended Practices
Industrial Scientific recommends persons with a pacemaker or implantable cardio defibrillator (ICD) should
maintain a minimum separation distance of 15 cm (6 ") between the pacemaker or ICD and a wireless-enabled
instrument. Please consult your physician or pacemaker or ICD manufacturer for additional guidance and
recommendations.
Industrial Scientific Corporation recommends the monitor be charged, configured, and calibrated before first
time use.
Industrial Scientific Corporation recommends a full monitor calibration be performed monthly (at a minimum),
using a certified concentration(s) of Industrial Scientific calibration gas(es) to help ensure monitor accuracy.
Industrial Scientific Corporation recommends the monitor be zeroed and bump tested before each use with a
certified concentration(s) of Industrial Scientific calibration gas(es).
Battery contacts are exposed on battery packs when they are removed from the monitor. Do not touch the
battery contacts and do not stack battery packs on top of one another.
Contact your service representative immediately if you suspect that the Ventis LS is working abnormally.

Ventis LS Product Manual
6© Industrial Scientific Corporation
Ventis LS Resources
The Ventis LS Product Manual is the primary resource, within a full suite of learning tools, developed for the monitor
user. Its step-by-step “walk through” format covers everything from unpacking to set-up, operation, and service. All
Ventis LS users should read and understand the Product Manual prior to unpacking or using the monitor.
A companion to the manual, the Ventis LS Reference Guide ships with the monitor. It serves to announce all warnings
and cautionary statements relevant to general monitor use. The guide also features process charts that provide an
overview of four fundamental tasks: operation/start-up, configuration, calibration, and functional “bump” testing. These
charts are tools for the user who is both familiar with the manual and proficient in the performance of the given task.
A collection of audio-visual learning tools is also available online at the Ventis LS Resource Center. Here the user can
watch fully narrated step-by-step demonstrations of instruction sets outlined in the manual.These training modules
allow the user to view the full presentation of a process, such as calibration, or to access a particular segment within
that process. These Ventis LS product-specific resources are part of the organization’s broader training line-up,
featuring face-to-face classroom programs for technicians, operators, first responders, trainers, and distributors.
Courses combine theory with hands-on learning, and can be tailored to the customer’s unique requirements and gas
monitoring applications.
The organization’s customer and technical support call centers provide product and order information, how-to product
assistance, and guidance for in-depth technical applications. Its service centers offer comprehensive factory repair
and maintenance services.
Industrial Scientific Corporation provides a full suite of resources to aid customers in the competent and safe use of
its products and services. With manufacturing, support, and service centers and hundreds of distributors worldwide,
Industrial Scientific serves the globe’s gas detection needs.
Ventis LS Capabilities
The Ventis LS is a portable multi-gas monitor. It detects and measures gas(es) present in open space. Its wireless
feature continuously communicates gas readings and alarm events to a control center. Based on the customer’s
monitor order, up to four sensors are factory installed enabling the monitor to continuously and simultaneously detect
and measure the presence of up to four specific gases.
Sensor
Category
Number available
per monitor
Gases Monitored
Oxygen
1
O2(Oxygen) only
Combustible
1
Monitor can be configured for sensor to measure ONE of the following:
•LEL (Pentane)
•LEL (Methane)
•CH4(0%-5%)
Toxic
2
Each sensor detects and measures only ONE of the following:
•CO (Carbon Monoxide)
•H2S (Hydrogen Sulfide)
•NO2(Nitrogen Dioxide)
•SO2(Sulfur Dioxide)
Equipped with a multi-mode (audible, visual, and vibration) and multi-level alarm system, the Ventis LS monitor is
capable of notifying its user of potentially hazardous gas concentrations. It is also equipped with motion alarms and a
panic alarm.
The monitor performs continuous datalogging at 10 second intervals. It can store approximately 90 days of data for a
four-sensor configuration. Its date- and time-stamped event log records and stores data for 24 alarm events and a
minimum of 15 error events. The memory, when full, overwrites the oldest data as the newest readings and events
are logged.

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© Industrial Scientific Corporation 7
The Ventis LS monitor functions as an independent device to monitor the environment for hazardous gas
concentrations. It is also part of the Ventis System including products that charge, calibrate, bump test, datalink,
protect, and otherwise enable or enhance use of the monitor and its data. (Datalink refers to capabilities that enable
access to the download and use of monitor datalogs, reports, and other information.)
Unpacking the Monitor
Contents
The monitor box contains the following items including, when ordered, those marked optional. Each item ordered
should be accounted for in the unpacking process.
Quantity
Item
Notes
1 as ordered
Ventis LS Portable Multi-gas
Monitor
--
•
1
Ventis LS Reference Guide
A companion to the Ventis LS Product Manual.
1 installed as ordered
Battery Pack
One of two battery types is factory installed as
indicated on the box label. Options:
•Rechargeable Lithium-ion
•Rechargeable Extended Range Lithium-ion
1 as ordered
Charger
Universal power cord. AC charger products include
interchangeable plugs (US, UK, EU, and AUS).
0 or 1
Calibration Cup
--
1
Calibration and Bump Test
Tubing
--
Two feet of clear tubing
1
Final Inspection & Test Report
Contains the following factory set* information:
•Monitor Set-up Date
•Monitor Part Number (P/N)
•Monitor Serial Number (S/N)
•For Each Sensor*:
•P/N
•S/N
•Type
•Location
•Alarm level values
•Span gas values
•Span reserve values
*Some factory set sensor values subject to user changes.
1
Service Tool
Tool includes two screw heads; a #1 Phillips head
and a T10 Torx bit are stored inside the handle.
1
Warranty Card
--
Reporting a Problem
After unpacking, if any item is missing or appears to have been damaged, contact a local distributor of Industrial
Scientific products or Industrial Scientific Corporation (for contact information, please see the manual’s last page).

Ventis LS Product Manual
8© Industrial Scientific Corporation
Monitor Overview
Hardware Features and Functions
Number
Feature
Functions
1
Visual alarm indicator
Signals an alarm or warning; frequency varies by alarm level. Also used as a
confidence indicator.
2
Sensor ports
Air intake; calibration and bump test gas intake.
3
Panic button
Used to signal an alarm on the instrument and wirelessly to the communications
center.
4
LCD display
User interface; backlight flashes when monitor is in system, high, or low alarm
states.
5
Audible alarm ports
On when monitor is in system, high, or low alarm states; frequency and tone vary
by alarm level. Also used for warnings and as confidence indicator.
6
On/Off/Mode button
Used to power-on and power-off. Also used to bypass a process/step or advance
to a next screen in both gas monitoring and configuration modes. Sets values in
configuration mode.
7
Enter button
Used to begin a process/step in a process. Edits values in configuration mode.
8
IrDA interface
Indicates infrared light data exchange in-progress.
9
Charging contacts
Battery charging.

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© Industrial Scientific Corporation 9
Display Screen
The Ventis LS Boot-up Screen, as shown below, serves to introduce all icons and the alpha-numeric items (e.g.,
8.8.8) that can appear on the display when the monitor is in use, docked, or charging. Each display item is stationary,
communicates unique information, and appears only when relevant to the task being performed.
A sample Gas Monitoring Screen is also shown below, next to the boot-up screen. This illustrates how the icons and
the alpha-numeric characters work together to communicate several points of information to the monitor user.
Boot-Up Screen
All possible screen images.
Gas Monitoring Screen
Sample screen in gas monitoring mode.
It is helpful to view the boot-up screen in sections. The top and bottom rows each contain icons. The main function of
the middle section, in gas monitoring mode, is to communicate gas concentration readings. Definitions for all icons,
gas name abbreviations, gas measurement units, and other indicators are provided below. Where applicable, display
variations are noted.
Top Row Icons
Definition
Status: indicates no monitor or sensor faults.
Warning: indicates monitor or sensor fault.
Zero: communicates zero status (e.g., zero results, zero in-progress, etc.).
Gas Cylinder: communicates calibration related information (calibration due, calibration apply
gas, etc.).
Clock: indicates a process is in-progress.
Calendar: communicates overdue warnings for service items (calibration, bump testing, etc.).
Alarm: indicates an alarm causing condition.
Low level audio alarm is on.
High level audio alarm is on.
Peak: displayed when peak detection values are viewed.
Alpha-numeric
display values
Definition
Carbon Monoxide (CO)
Methane (CH
4
)
Sulfur Dioxide (SO
2
)
Lower Explosive Limit. Display variations:
“LEL” (English)
“LIE” (French)
“UEG” (German)

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10 © Industrial Scientific Corporation
Oxygen (O
2
)
Nitrogen Dioxide (NO
2
)
Hydrogen Sulfide (H
2
S)
Percentage Volume: O
2
and CH
4
measurement unit
Percentage unit for combustible gases; display variations:
“% LEL” (English)
“% LIE” (French)
“% UEG” (German)
Parts Per Million: H
2
S, CO, SO
2
and NO
2
measurement unit.
Over-range: for any sensor in over-range, indicates the measured gas concentration is greater
than the measurement range of the sensor. Display variations:
“Or” (English and German)
“Sup” (French)
Negative Over-range: for any sensor in negative over-range indicates the measured gas
concentration is less than the negative measurement range of the sensor. Display variations:
“-Or” (English and German)
“InF” (French)
Bottom Row Icons
Definition
Battery level indicator; display variations:
1 bar < 33% charge remaining
2 bars = 34% - 66% charge remaining
3 bars = 67% – 100% charge remaining
Security Code: indicates code is set or to be entered.
Indicates IrDA communication is in-progress when the monitor is docked.
Indicates wireless communication is active when the monitor is NOT docked.
Short Term Exposure Limit: communicates STEL values. Display variations:
“STEL” ( English and German)
“VLE” (French)
Time Weighted Average: communicates TWA values. Display variations:
“TWA” (English and German)
“VME” (French)

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© Industrial Scientific Corporation 11
Alarms
NOTICE
→All monitor alarms and warnings should be taken seriously and responded to as stated in company safety
standards.
It is practical for the monitor user to be aware of the possible alarms prior to monitor set-up and use. The Ventis LS
has multiple alarm and warning signals. A “system level” alarm generates the highest frequency tone and highest
level visual and vibration signals. It is used to indicate such events as a sensor failure. Compared to the system
alarm, gas alarms are of lower intensity, and a quick repetitive burst of signals is used to indicate a panic or motion
alarm. The lowest level indicator is a warning with low-level beep patterns to indicate service needs (e.g., low battery
or calibration due). The beep is also used as a confidence indicator when enabled.
Alarm types and their alarm generating conditions are described below.
Display
Description
Over-range Alarm Screen
The “Or” message indicates which sensor(s) is reading an over-range
condition(s). All other sensors show their current gas concentration
readings on a numeric display (left) or gas names on a text display (right).
The high level alarms turn on and the alarm icon displays.
An over-range condition occurs when
the gas concentration value sensed is
above the sensor’s measuring range.
After any over-range alarm, the
monitor should be calibrated.
NOTE: The O2and toxic sensor values normally
reset when the gas sensed reaches an acceptable
range. If the LEL sensor reads over-range, the
alarm “latches” or remains on until the monitor is
powered-off.
Negative Over-range Alarm Screen
The “-Or” message indicates which sensor is reading a negative over-
range condition. All other sensors display their current gas concentration
readings*. The high level alarms turn on and the alarm icon displays.
A negative over-range condition occurs
when the gas concentration value
sensed is less than the sensor’s
measuring range.
After any negative over-range alarm,
the monitor should be calibrated.
High Alarm Screen
A flashing gas concentration value* indicates which sensor(s) reading(s) is
the cause for alarm. The high level alarms turn on and the up arrow icon
displays.
A high alarm condition occurs when
the concentration of gas sensed
reaches a level greater than the
monitor’s high alarm value setting for a
sensor(s).
Low Alarm Screen
A flashing gas concentration value* indicates which sensor(s) reading(s) is
the cause for alarm. The low level alarms turn on and the down arrow icon
displays.
A low alarm condition occurs when the
concentration of gas sensed reaches
the monitor’s low alarm value setting
for a sensor(s).

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12 © Industrial Scientific Corporation
TWA Alarm Screen
A flashing gas concentration value* indicates which sensor(s) reading(s) is
the cause for alarm. The low level alarms turn on and the TWA icon
flashes.
A TWA alarm occurs when the
calculated time weighted average
reaches the monitor’s hazardous value
for the set time frame.
STEL Alarm Screen
A flashing gas concentration value* indicates which sensor(s) reading(s) is
the cause for alarm. The low level alarms turn on and the STEL icon
flashes.
The STEL alarm occurs when the short
term exposure value exceeds the
acceptable limit.
No Sensor Installed Screen
The system level alarms turn on and the error icon displays.
Alarm occurs when the monitor
registers no sensors installed.
Sensor Data Fail Screen
A flashing “F” indicates which sensor is the cause for alarm. The audio
alarm turns on and the error icon displays.
Alarm occurs when any installed
sensor’s data-related operations fail
and the sensor is not operational.
Motion 1 Alarm Screen
The panic-motion alarm signals turn on.
The Motion 1 alarm occurs when the
instrument has not moved for 1 minute
(default setting; subject to change). To
turn off the alarm, the user can move
the monitor or press the ENTER
button.
Motion 2 Alarm Screen
The panic-motion alarm signals turn on.
The Motion 2 alarm occurs when the
Motion 1 alarm has not been cleared.
The user can clear the Motion 2 alarm
by pressing the ENTER button for one
second.

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Panic Alarm Screen
The panic-motion alarm signals turn on.
Occurs when the user presses the
Panic button. The user can clear the
panic alarm by pressing the ENTER
button for one second.
Low Battery Warning Screen
A beep sounds every 30 seconds and the empty battery icon flashes.
Alarm occurs when the monitor’s
battery reaches a low level of charge
or is nearing its end of life.
Bump Overdue Screen
A “b” indicates which sensor(s) is overdue for bump testing. Two beeps
sound every 30 seconds and the calendar and alarm icons display.
Alarm occurs when one or more
sensors are due for a bump test. If the
monitor settings permit, an in-field
bump test may be performed in an
area known to be nonhazardous.
Calibration Due Alarm Screen
The gas value flashes for each sensor overdue for calibration. Three
beeps sound every 30 seconds and the calendar and alarm icons display.
The gas cylinder icon flashes.
Alarm occurs when one or more
sensors are due for calibration. If the
monitor settings permit, an in-field
calibration can be performed in an area
known to be nonhazardous.
* The numeric mode display shows gas concentration values; the text mode display shows gas type names in place of gas values.
Monitor Set-up
Preparing the monitor for first time use is a “3-C” process: charge (if equipped with a lithium-ion battery pack),
configure, and calibrate. This manual section covers charging and configuration for set-up purposes and can be
consulted for ongoing instruction thereafter. Immediately following this section, calibration is covered in the manual
section, Use and Service.

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14 © Industrial Scientific Corporation
Battery Properties
Based on the customer order, the Ventis LS comes equipped with one of two factory installed batteries: rechargeable
Lithium-ion (Li-ion) or the rechargeable Extended Range Lithium-ion (extended range Li-ion). The factory installed
battery pack type is stated on the label affixed to the monitor box. Basic battery properties are shown below.
Properties
Battery Pack
Rechargeable
Li-ion
Rechargeable
Extended Range
Li-ion
Battery lifetime
300 charge cycles
300 charge cycles
Battery re-charge time
3-5 hours
3-7 hours
Ambient temperature required for
charging
0−50 °C (32−122 °F)
0−50 °C (32−122 °F)
Nominal run time (when fully charged
and operating at room temperature)
12 hours
20 hours
Charging the Lithium-ion Battery Packs
The lithium-ion battery packs are charged at the factory. As some or all of the charge may deplete before the monitor
arrives or is unpacked, it is recommended that the monitor be fully charged before first time use. Ventis LS can be
charged with any of the products listed below.
•DS2 Docking Station™ for Ventis LS
•Single Unit Charger
•Single Unit Charger/Datalink
•Single Unit Automotive Charger, 12 VDC
•Single Unit Truck-Mount Charger, 12 VDC, with Cigarette Adapter
•Single Unit Truck-Mount Charger, 12 VDC, Hard Wired
NOTE: The above products are all equipped with a yellow LED “presence” indicator. This LED confirms that the monitor is properly seated
in the cradle such that the monitor can charge; however, it is NOT intended to be used as a charging indicator.
This LED indicator may go out intermittently during normal charging functions and will not light if the unit is fully charged when placed in the
cradle. Always refer to the monitor display’s battery level indicator to confirm the battery charge level.
The Single Unit Charger is generally shipped with the monitor and is equipped with a movable partition which fits in
each of two dedicated slots. Place the partition in the front slot to charge a monitor with a battery pack. Place the
partition in the back slot to charge and instrument with an extended range battery.
Instructions
NOTICES
→Charge the monitor in an area known to be nonhazardous.
→When using the charger and adjusting its partition, take care NOT to touch the battery contacts located at
the front of the cradle bottom.
•The single unit charger has a universal power cord; change the plug insert, if needed, and plug into the
appropriate outlet.
•To properly adjust the partition, if needed, complete and observe the following.
oLift up to remove from slot.
oPush down to place in the desired slot.
oWhen partition is inserted correctly, a click sounds.
Recommended Practice: To prevent the loss of the partition, it should always reside in the cradle in one of its two
dedicated slots. Choose the most used slot. Do not place the partition in the forward most compartment of the charger
where the battery contacts are located.
•To properly place the monitor in the charger, complete or observe the following.

Ventis LS Product Manual
© Industrial Scientific Corporation 15
oThe monitor’s display side faces the user.
oThe charging contacts on the monitor bottom meet the contact pins inside the charger’s cradle.
oRefer to the monitor’s battery icon to confirm the battery charge level.
−If the battery is less than fully charged, the monitor displays the battery icon (flashing empty
to full, repeatedly).
−If the battery is fully charged, the monitor displays a full battery icon.
Power-On and -Off
To power-on the Ventis LS, press ON/OFF/MODE and hold for three to five seconds. During the first ten to15
seconds the monitor is on, its firmware completes internal tests and the user sees or hears what is described and
shown below. Following this initialization phase, a countdown screen displays. During this 20-second countdown, the
monitor user can enter configuration mode to manually adjust monitor settings.
Display and Options
Instructions
Visual Test Screen
Displays for up to five seconds as the monitor completes a sensor
and alarm check. Visual, vibration, and audio alarms turn on
briefly, then off.
No user action required.
Software Version Screen
The Software Version Screen message displays for five seconds.
No user action required.
Countdown Screen
Displays the 20 second countdown, one second at a time, from 20
to one.
Options
Enter gas monitoring mode
Enter configuration mode
To enter gas monitoring mode:
Allow the countdown to complete and advance
to the Gas Monitoring Screen. Proceed to the
manual section, Monitor Use and Service.
To enter configuration mode:
Simultaneously press ON/OFF/MODE and
ENTER, hold for three seconds, and release.
Power-Off Screen
The screen displays a five-second countdown accompanied by five
beeps and LED flashes.
Press ON/OFF/MODE, hold for the full five
second countdown to zero, and release to
power-off the monitor.

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Configuration
INTRODUCTION
Before first time use of the monitor, its settings should be reviewed and, if needed, be adjusted. Qualified safety
personnel should complete the following tasks.
•Review the monitor settings for compliance with company policy and any applicable regulations, laws, and
observed guidelines as issued by regulatory agencies and government or industry groups.
•Determine which settings, if any, require adjustment.
•Make the adjustments or supervise other qualified personnel in the process.
Monitor settings should be reviewed regularly and adjusted as needed. The following settings are adjustable or
“configurable" for the Ventis LS
LEL Type
Calibration Mode Setting
Low Alarm Settings
High Alarm Settings
TWA Alarm Settings
TWA Interval Settings
STEL Alarm Setting
Calibration Gas Settings
Clock Settings
Date Settings
Display Mode Setting
Confidence Indicator (on/off)
Confidence Indicator (type)
Bump Test In-field
Bump Test Due Warning
Bump Test Time Set-point
Bump Test Percentage
Bump Test Response Time
Alarm Latch Set
Zero In-field
Calibration In-field
Calibration Due Alarm
Calibration Due Set-point
Security Code
Language Selection
The Ventis LS can be configured manually as instructed below. Any changes made take effect immediately upon
exiting the configuration mode.
Configuration can also be completed through Industrial Scientific Accessory Software (ISAS) or the Docking Station
Server Administrative Console (DSSAC), software tools for users of iNET, DS2 Docking Station for Ventis, V-Cal
Calibration Station, and the Single-Unit Charger/Datalink. For instruction on the use of these software tools, please
consult the respective manual.
When the monitor is part of a fleet maintained by DS2, any manual changes made to the monitor’s settings are
overridden by the DS2 settings when the monitor is next docked.
INSTRUCTIONS
NOTICES
→The configuration mode should be accessed only by safety personnel authorized to change monitor settings
based on company policy.
→Read ALL requirements and instructions outlined below, including the screen-by-screen process description,
before beginning the configuration process.
The configuration mode can be entered during the 20-second countdown of the power-on process. During the
countdown, simultaneously press ON/OFF/MODE and ENTER, hold for three seconds, and release to enter
configuration mode. (While in the configuration mode, the same button presses cause the monitor to exit
configuration). Each configuration screen times out after 30 seconds and the monitor enters gas monitoring mode. To
re-enter the configuration mode, power-off the monitor, then power-on and repeat the entry process.
Throughout the configuration process, the main functions of the two buttons are as follows.
•The ENTER button is used to edit values. It is also used, where noted, to begin a process or a step in a
process.
•The ON/OFF/MODE button is used to set the value. Where noted, it is also used to bypass a process or
step in a process, or to advance to the next configuration screen.
The first screen to display in configuration mode depends on three things:
•security code setting,
•the presence or absence of the China MA feature,
•and the presence or absence of an LEL sensor.

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If the security code setting is 000, the security feature is disabled and the Enter Security Code Screen does NOT
appear. If the security code is NOT 000, the security feature is enabled and the monitor displays the Enter
Security Code Screen.
The monitor next checks for the presence of a China MA mining feature. If this feature is operational, the monitor
displays the Zero Initiate Screen.
If the China MA mining feature is NOT operational, the monitor then checks for an installed LEL sensor. If
installed, the monitor displays the LEL Type Screen. If no LEL sensor is installed, the monitor displays the Zero
Initiate Screen.
Configuration Process
NOTE: To view a fully narrated step-by-step audio visual demonstration of the configuration process, visit the
online Ventis LS Resource Center at www.indsci.com/VentisLSresources.
Display and Options
Instructions
Enter Security Code Screen
The presence of this screen indicates an
enabled security feature.
Press ENTER to edit the value, if needed; press repeatedly or hold
down to speed the increment pace to reach the valid security code.
Press ON/OFF/MODE to enter configuration mode and arrive at the
next applicable screen.
LEL Type Set Screen
Options
LEL
CH4
Press ENTER to edit the value, if needed.
Press ON/OFF/MODE to set the value and advance to the Zero Initiate
Screen.
NOTE: If the LEL type is changed, the sensor goes into calibration fail mode. A full
calibration is required before the monitor can be used and is accessible from the next
screen in the configuration process, the Zero Initiate Screen. For complete calibration
instructions, proceed to the manual section, Zero, Calibration, and Bump Testing.
Zero Initiate Screen
Options
Bypass zero and calibration process.
Begin zero and calibration process.
Press ON/OFF/MODE to bypass the zero and calibration processes
and advance to one of two screens.
If the installed sensor set includes H2S and NO2, OR, SO2and
NO2, the monitor is pre-set for standard calibration mode and the
Low Alarm Set-point Screen displays.
For all others installed sensor combinations, the Calibration Mode
Selection Screen displays.
Press ENTER to begin the zero and calibration process. Proceed to
the manual section, Zero, Calibration, and Bump Testing

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Calibration Mode Selection
Does not display if the installed sensor
combination includes H2S and NO2, or,
SO2and NO2.
Options
0 = Standard Calibration
1 = Quick Calibration
The quick calibration option sets the monitor to calibrate all four
sensors simultaneously. The standard calibration option sets the
monitor to calibrate each sensor independently.
Press ENTER to edit the value, if needed.
Press ON/OFF/MODE to set the value and advance to the Low Alarm
Set Screen.
NOTE: The user can edit the values for four alarm types in configuration mode. The monitor presents these options
in the order shown below.
1. Low alarm
2. High alarm
3. TWA (if toxic sensors installed)
4. STEL (if toxic sensors installed)
For each alarm type (e.g., low alarm), the user can edit the alarm settings for each installed sensor, one sensor
at a time. The order in which the sensors are subject to change is as follows.
1. Toxic sensor 1
2. LEL sensor
3. Toxic sensor 2
4. O2sensor
Low Alarm Set-point Screen
Displays the existing low alarm value for
each installed sensor. If any one of the
sensors is NOT installed, its position on
the display is blank.
Press ON/OFF/MODE to bypass the low alarm value set process and
advance to the High Alarm Set-point Screen.
Press ENTER to begin the low alarm value set process.
On the display, the first sensor subject to change flashes.
Press ENTER to edit the value, if needed; press repeatedly or
hold down to speed the increment pace.
Press ON/OFF/MODE to set the value.
The next sensor subject to change flashes. Continue to use
the ENTER and ON/OFF/MODE buttons, respectively, to edit
and set each sensor’s low alarm value.
After the alarm value is set for each installed sensor,
press ON/OFF/MODE to advance to the High Alarm Set-
point Screen.
High Alarm Set-point Screen
Displays the existing high alarm value for
each installed sensor. If any one of the
sensors is not installed, its position on the
display is blank.
Press ON/OFF/MODE to bypass high alarm value set process and
advance to one of two screens as noted below.
Press ENTER to begin the high alarm value set process.
On the display, the first sensor subject to change flashes.
Press ENTER to edit the value, if needed; press repeatedly or
hold down to speed the increment pace.
Press ON/OFF/MODE to set the value.
The next sensor subject to change flashes. Continue to use
the ENTER and ON/OFF/MODE buttons, respectively, to edit
and set each sensor’s high alarm value.
After the alarm value is set for each installed sensor,
press ON/OFF/MODE and advance to one of two
screens.
If at least one toxic sensor is installed, the TWA
Alarm Set Screen displays.

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If NO toxic sensors are installed, the Calibration Gas
Set Screen displays.
TWA Alarm Set-point Screen
Displays the existing TWA values for the
toxic sensors installed. No other sensor
readings appear.
Press ON/OFF/MODE to bypass the TWA alarm value set process
and advance to the TWA Interval Set-point Screen.
Press ENTER to begin the TWA alarm value set process.
On the display, the first sensor subject to change flashes.
Press ENTER to edit the value, if needed; press repeatedly or
hold down to speed the increment pace.
Press ON/OFF/MODE to set the value.
The next sensor subject to change flashes. Continue to
use the ENTER and ON/OFF/MODE buttons,
respectively, to edit and set each alarm value.
After the alarm value is set for each installed
sensor, press ON/OFF/MODE to advance to the
TWA Interval Set Screen.
TWA Interval Set-point Screen
Displays the existing TWA interval.
The value can be set from one to 40
hours, in increments of one.
Press ENTER to edit the value, if needed.
Press ON/OFF/MODE to set the value and advance to the STEL
Alarm Set-point Screen.
STEL Alarm Set-point Screen
Displays the existing STEL values for the
toxic sensors installed. No other sensor
readings appear.
Press ON/OFF/MODE to bypass the STEL alarm value set process
and advance to the Calibration Gas Set Screen.
Press ENTER to begin the STEL alarm value set process.
On the display, the first sensor subject to change flashes.
Press ENTER to edit the value, if needed; press repeatedly or
hold down to speed the increment pace.
Press ON/OFF/MODE to set the value.
The next sensor subject to change flashes. Continue to use
the ENTER and ON/OFF/MODE buttons, respectively, to edit
and set each sensor’s STEL alarm value.
After the alarm value is set for each installed sensor,
press ON/OFF/MODE to advance to the Calibration Gas
Set Screen.
Calibration Gas Set Screen
Displays the existing calibration gas value
for each installed sensor.
If any one of the sensors is not installed,
its position on the display is blank.
Press ON/OFF/MODE to bypass the calibration gas set process and
advance to the Clock Set Screen.
Press ENTER to begin the calibration gas value set process.
On the display, the first sensor subject to change flashes.
Press ENTER to edit the value, if needed; press repeatedly or
hold down to speed the increment pace.
Press ON/OFF/MODE to set the value.
The next sensor subject to change flashes. Continue to use
the ENTER and ON/OFF/MODE buttons, respectively, to edit
and set each sensor’s calibration gas value.
After calibration gas value is set for each installed
sensor, press ON/OFF/MODE to advance to the Clock
Set Screen.

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Clock Set Screen
Displays the existing time values using a
24-hour time format.
Press ON/OFF/MODE to bypass the clock set process and advance
to the Date Set Screen.
Press ENTER to begin the clock set process.
On the display, the first time value subject to change flashes.
Press ENTER to edit the value, if needed; press repeatedly or
hold down to speed the increment pace.
Press ON/OFF/MODE to set the value.
The next value subject to change flashes. Use the
ENTER and ON/OFF/MODE buttons, respectively, to edit
the value.
After all values are set, press ON/OFF/MODE and
advance to the Date Set Screen.
Date Set Screen
Displays the existing date. The value
displayed on the far left is the month and
to its right the day. The year is displayed
beneath the day.
Press ON/OFF/MODE to bypass the date set process and advance to
the Display Mode Set Screen.
Press ENTER to begin the date set process
On the display, the first date value subject to change flashes.
Press ENTER to edit the value, if needed; press repeatedly or
hold down to speed the increment pace. Press
ON/OFF/MODE to set the value.
The next date value subject to change flashes. Continue to
use the ENTER and ON/OFF/MODE buttons, respectively, to
edit and set each value.
After all values are set, press ON/OFF/MODE and
advance to the Display Mode Set Screen.
Display Mode Set Screen
Options
0 = Numeric Mode
1 = Text Mode
The display mode selected determines whether the monitor user will
see a numeric or text display (including alarm displays) when the
monitor is in the gas monitoring mode.
Press ENTER to edit the value, if needed.
Press ON/OFF/MODE to set the value and advance to the Confidence
Indicator Set Screen.
Confidence Indicator Set Screen
Options
0 = Disable/off
1 = Enable/on
With an enabled confidence indicator, the monitor will emit a signal,
every 90 seconds in gas monitoring mode, to inform the user it is
operational.
Press ENTER to edit the value, if needed.
Press ON/OFF/MODE to set the value and advance to one of two
screens.If the confidence indicator is enabled, the Confidence
Indicator Type Set Screen displays.
If the confidence indicator is disabled, the Bump Test In-field
Option Screen displays.