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ALTAIR® 5X Multigas Detector
Bid Specification
Gas delivery
Size, pumped unit without IR
Size, pumped unit with IR
Size, pumped unit with PID
Case material
Environmental protection
Display location
Unit shall have non-detachable integral pump that is capable of sampling
up to 75 feet (22, 86 m) at 0.3 lpm for standard versions of the Altair 5X..
Instrument shall not exceed 6.68”L x 3.52"Wx 1.95"H
(16,9 cm L x 8,9 cm W x 4,2 cm H) in total size.
Instrument shall not exceed 6.68"L x 3.52"Wx 1.65"H
(16,9 cm L x 8,9 cm W x 5,0 cm H) in total size.
Instrument shall not exceed 6.69" L x 3.53" W x 2.02” H (17,0cm L x
9,0cm H x 5,1cm H) in total size.
Weight shall not exceed 1 lb. (453 g) or 1.15 lbs. (680 g) (IR version).
Unit shall be a 1-hand operation device.
Unit shall have rugged rubberized armor.
Instrument shall be minimum IP65-rated for dust and water ingress.
Instrument display shall be viewable from the front.
Display type
Data access
Sensor configuration
Sensor missing alarm
Combustible gas display
Pressure compensation
Sensor types
ID # 0802-88 ©MSA 2015
Liquid crystal, high-contrast display (LCD), (1.79” x 1.39”)
(4, 5 cm x 3, 5 cm) with large icons should be visible in bright sunlight.
Display shall be available in either color or monochrome options. PID
version shall be available in color option only.
Unit provides white backlight for low-light viewing. Backlight time-out to
conserve power must be user-adjustable.
Unit must have no more than 3 pushbuttons to operate.
Buttons must be easy to operate while gloves are worn.
Access to data log shall be non-intrusive using infrared links to Windowsready PCs.
User shall be able to enable/disable individual sensor channels.
All sensor channels provide missing sensor alarm if sensor has been
removed and sensor channel has not been disabled.
Instrument shall be capable of displaying combustible gas reading as %
Lower Explosive Limit (LEL) or 0-100% by volume.
Instrument oxygen sensor shall have built-in pressure compensation.
Instrument shall be available with the following gas sensing options:
Gas type
Carbon monoxide
0-2000 ppm
1 ppm
Carbon Monoxide
0-10,000 ppm
5 ppm
Hydrogen sulfide
0-200 ppm
1 ppm
Hydrogen sulfide
0-100 ppm
0.1 ppm
Sulfur dioxide
0-20 ppm
0.1 ppm
0-10 ppm
0.05 ppm
0-100 ppm
1 ppm
Nitrogen dioxide
0-20 ppm
0.5 ppm
Nitrogen dioxide
0-50 ppm
0.1 ppm
Chlorine dioxide
0-1 ppm
0.01 ppm
0-5 ppm
0.1 ppm
Hydrogen cyanide
0-30 ppm
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Carbon dioxide, CO2
Butane, C4H10
Methane, CH4
Propane, C3H8
0-2000 ppm
0.1 ppm
Instrument buttons
Buttons on instrument must be easy to operate while user wears gloves.
Inadvertent shutoff
Zero adjustments
Zero adjustment
safety lockout
Confidence signals
Last calibration date
Instrument power-on
Instrument shall be designed to protect against accidental shutoff.
Instrument shall provide Fresh Air Setup (FAS) function at user’s discretion.
FAS function shall not allow unit to zero out hazardous readings.
Instrument shall provide periodic audible and visual signals indicating instrument
operation. User shall have option of disabling audible and visual signals if desired.
Instrument must be able to display time and date. User must be able to reset time
and date without tools.
Instrument must be able to display last successful calibration date.
Power-on instrument button must be clearly marked.
Instrument shall have capability of displaying PEAK, STEL and TWA at user’s
Industrial hygiene
discretion. User shall have ability to enable/disable STEL and
TWA functions.
All settable instrument parameters (alarm set points, expected calibration gas
Instrument settings
values, etc.) shall be protected by user-selectable password.
User shall be provided with capability of resetting PEAK, STEL and TWA readings
Reset of functions
in the field.
Unit shall be capable of displaying both types of gas sensors installed and
Measurement units
measurement units for each gas.
MotionAlert™ feature
InstantAlert™ feature
Visual alarms
Audible alarm
Vibrating alarm
Lockalarm™ Circuit
Auto recover feature
Oxygen alarms
Alarms set points
STEL and TWA alarm
Battery alarms
ID # 0802-88 ©MSA 2015
Instrument shall offer standard MotionAlert feature. When activated, instrument
shall eventually activate latch alarm when no instrument movement is detected for
30 seconds.
Instrument shall have InstantAlert feature to allow users manual activation of all
alarms if situation requires.
Visual alarms shall consist of bright, flashing LEDs on top and bottom of
instrument and positive indication on unit’s display for alarm type identification.
Audible alarm shall be rated at a typical >95 dB.
Unit shall be offered with standard vibrating alarm.
Catalytic combustible channel shall have non-resettable latching alarm when
combustible gas level exceeds 100% LEL, or 5.00%Vol CH4 when no 0-100%Vol
CH4 IR sensor is installed.
Catalytic combustible channel shall auto recover from Lockalarm Circuit situation if
0-100 %Vol CH4 IR sensor is installed and reading returns to low methane levels.
Oxygen channel shall have alarm set points for both oxygen deficiency and oxygen
Alarm set points must be user-settable.
Instrument shall provide audible, visual and vibrating alarms if STEL or TWA levels
are exceeded. Alarm set points for STEL and TWA shall be user-selectable.
Monitor shall provide user with 10-minute warning of battery power loss in all
environmental conditions. Power consumption alarms shall activate audible, visual
and vibrating alarms.
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Run time
Power supply
Battery life indication
Charging cradle
Charger input voltages
Charging status
Instrument run time shall be at least 20 hours at room temperature.
IR version run time shall be at least 17 hours at room temperature.
PID version run time shall be at least 13 hours at room temperature.
Instrument shall be equipped with rechargeable lithium-ion battery.
Alkaline option available (except IR or PID).
Monitor shall provide icon depicting estimated remaining battery operation
time. Battery icon must always be visible when instrument is powered on.
Optional charging cradle shall be offered.
Chargers shall be available for 110VAC/220 VAC and 12-24 VDC.
Both instrument and charging cradle shall provide visual indication of
battery charging status.
Calibration tools
Calibration access
Pushbutton calibration
Calibration time
Automatic calibration
Sampling modes
Sampling systems filters
Allowable sample line length
Fluid ingress protection
Reactive gas monitoring
Unit shall require no special tools for calibration other than cylinder,
regulator and tubing to supply gas to instrument.
Calibration access can be hidden behind password when desired.
Calibration shall be easily performed using instrument’s pushbuttons.
Internal instrument access or tools shall not be necessary for calibration.
Span calibration shall not exceed 60 seconds for LEL, O2, CO, H2S, SO2,
and NO2 XCell sensors and PID. Other gases shall not exceed the
following span calibration times:
Gas type
Span time
2 minutes
2 minutes
Nitrogen dioxide (Series 20)
4 minutes
Chlorine dioxide
6 minutes
4 minutes
Hydrogen cyanide
4 minutes
Instrument shall be compatible with optional automated test and with
calibration system able to store data. External system shall automatically
recognize and calibrate instrument and retain all calibration records.
Instrument shall be available with internal pump.
Pump must contain user-replaceable filters to prevent liquids and dust
Instrument must be capable of sample draw from 50 feet within 9 seconds
or from 80 feet (24, 38 m) within 15 seconds.(Should be 1’/second rule of
thumb, will verify in testing. Tubing up to a certain length (TBD) will need to
be 1/16”ID and then 1/8”ID for anything longer.) Standard version Altair 5X.
Sample probe shall be offered that is designed to prevent water and debris
from entering instrument.
Special sample probe shall be offered when used with Cl2, NH3 and ClO2.
LEL, O2, CO, H2S, NO2. SO2 XCell sensors and IR sensors shall have
Sensor life
expected 4-year life. NH3 and Cl2 sensors shall have expected 3-year life.
Instrument shall notify user when sensor is close to and at its end-of-life
End-of-life sensor indicator
following calibration.
Combustible sensor
<10 seconds (methane)
< 15 seconds (pentane)
Oxygen sensor
< 10 seconds
CO sensor
< 15 seconds
H2S sensor
< 15 seconds
Typical t(90) response times
NH3 sensor
< 40 seconds
SO2 sensor
< 10 seconds
NO2 sensor
< 15 seconds
Cl2 sensor
< 30 seconds
< 35 seconds
ID # 0802-88 ©MSA 2015
Page 3 of 5
< 34 seconds
IR C4H10
< 35 seconds
PID 10.6eV 2000ppm < 10 seconds
All sensors should have built-in/dedicated control circuitry, including drive
All sensors
circuits, memory, microprocessor, and analog-to-digital converter to all for
sensor level control and compensation.
Oxygen sensor shall be lead-free and use non-consumable chemical
Oxygen sensor
Combustible sensor must have at minimum the following poison resistance:
Combustible sensor
3000 ppm*hours to H2S 90 ppm*hours to silicon
CO / H2S sensor shall be designed with extremely robust carbon filter for
CO / H2S sensor
CO channel to block interference. Sensor shall be designed for virtually no
cross-channel interference.
NH3 sensor shall use non-consuming chemical reaction and self-recover
NH3 sensor
after significant gas exposures. Sensor shall have 3-year or greater
expected life.
SO2 sensor shall have response time of 10 seconds or less, use nonSO2 sensor
consuming chemical reaction and self-recover after significant gas
exposures. Sensor shall have 3-year or greater expected life.
NO2 sensor shall have response time of 15 seconds or fewer. Sensor shall
NO2 sensor
have 4-year or greater expected life.
Cl2 sensor shall have minimal drift even under dry conditions. Sensor shall
Cl2 sensor
have virtually no cross-interference with CO, H2S and SO2. Sensor shall
have 3-year or greater expected life.
IR sensor shall not rely upon mirror to obtain appropriate path length, as
IR sensors
mirrors are highly susceptible to humidity and to condensing atmospheric
All response times are calculated using manufacturer-recommended operation.
Dirt, dust and cleanliness of sampling line can and will impact response time.
Data logging
Instrument must be available with standard data logging.
Event log
Instrument shall record at least 1000 events.
Data log shall record and store data for average of 200 hours (at 1-minute
Data log capacity
intervals) without overwriting existing information during normal use.
Data log entries shall contain as minimum date, time and record of peak
Gas record content
and average readings for each gas sensor (oxygen shall be recorded as
maximum and minimum for these intervals).
Instrument shall have provisions to record atmospheric temperature
Atmospheric record
Time span among data records shall be user-selectable from 15 seconds
Record intervals
to 15 minutes.
Instrument data stored in memory shall not be lost or corrupted in event of
Data retention
sudden instrument power loss.
Instrument data log shall record and be capable of reporting significant
instrument events including:
Activity record content page
• Gas and battery alarms.
• Fresh air setups, sensor re-zeroing and calibrations.
• Battery voltage and elapsed run time.
North America
ID # 0802-88 ©MSA 2015
Class I, Division 1, Groups A, B, C & D
Class II, Division 1, Groups E, F & G
Class III, Division 1
Ambient temperature: -40 C to +50 C; T4
ALTAIR 5X Multigas Detector with alkaline battery pack T3/T4
ALTAIR 5X or ALTAIR 5X iR Multigas Detector with rechargeable
battery pack T4
Page 4 of 5
Canada CSA
Class I, Division 1, Groups A, B, C & D
CAN/CSA C22.2 No. 152 Combustible Gas Detection Instruments
C22.2 No. 152 Performance Ambient Temperature: -20° C to +50° C
C22.2 No. 157 Intrinsic Safety Ambient Temperature: -40° C to +50° C
ALTAIR 5X Multigas Detector with alkaline battery pack T3/T4
ALTAIR 5X or ALTAIR 5X iR Multigas Detector with rechargeable
battery pack T4
ATEX Directive 94/9/EC
ALTAIR 5X Multigas Detector:
II 2G Ex d ia mb IIC Gb IP65 – Zone 1 when XCell® Ex Sensor
is installed.
II 1G Ex ia IIC Ga IP65 – Zone 0 when XCell Ex Sensor is
not installed.
ALTAIR 5X Multigas Detector with rechargeable battery pack T4
I M1 Ex ia I Ma
ALTAIR 5X iR Multigas Detector II 2G Ex d e ia mb IIC T4 Gb IP65
CE 0080 Directive 2004/108/EEC (EMC): EN 50270 Type 2, EN61000-6-3
ANZEx Australia/New Zealand - Test Safe Australia
ALTAIR 5X & ALTAIR 5X iR Multigas Detector
Ex ia sa IIC T4 (Zone 0) IP65
ALTAIR 5X Multigas Detector with alkaline battery
pack T3/T4
ALTAIR 5X or ALTAIR 5X iR Multigas Detector with
rechargeable battery pack T4
Ex ia sa I (Zone 0) IP65
Australia / New Zealand
Manufacturing system quality
IECEx - Test Safe Australia
ALTAIR 5X & ALTAIR 5X iR Multigas Detector
Ex ia mb d IIC IP65 – Zone 1 when XCell Ex Sensor
is installed.
Ex ia IIC IP65 – Zone 0 when XCell Ex Sensor is
not installed.
ALTAIR 5X Multigas Detector with alkaline battery
pack T3/T4
ALTAIR 5X or ALTAIR 5X iR Multigas Detector with
rechargeable battery pack T4
Ex ia I IP65 – Zone 0
Instrument manufacturer must be certified as compliant with ISO 9001
Normal operation: 0° to 40° C
Extended: -20° to 50° C
Short periods (15 minutes): -40° to +50° C (all except PID)
15-90% RH (non-condensing) continuous
5-95% RH (non-condensing) for short periods.
Sensors shall be easily accessed and replaced by users if desired by
Sensor replacement
Instrument shall have 3-year back-to-back warranty under normal use
conditions, including CO/H2S/LEL/O2/SO2/NO2 XCell and IR sensors. NH3
Warranty, consumables
and Cl2 shall be warranted for 2 years. Other sensors shall be warranted for
at least 12 months.
ID # 0802-88 ©MSA 2015
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