Ventis™ MX4 Product Manual
© 2014Industrial Scientific Corporation
4
General Usage
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, water barriers, and the pump inlet must be kept clean. Obstruction of the sensor openings or
pump inlet and/or contamination of the water barriers may cause readings to be lower than actual gas
concentrations.
To avoid the potential of liquid being pulled into the sample tubing and pump assembly, it is recommended that
Industrial Scientific filter (P/N 17027152) be used on the sample tubing when drawing samples using the
aspirated monitor.
WARNING: INSERT THE ALKALINE BATTERIES WITH THE CORRECT POSITIVE “+” AND NEGATIVE “-“
ORIENTATION. WARNING: The Ventis MX4 is only approved for use with AAA battery types Energizer EN92
and Duracell MN2400. Do NOT mix battery types.
WARNING: The use of leather cases can produce inaccurate readings with diffusion (non-aspirated) gas
detection instruments for specific monitoring applications. Leather cases should be used ONLY as carrying
cases, and NOT for continuous monitoring, with diffusion instruments configured to measure gases other than
O
2
, CO, CO
2
, H
2
S, and combustible gases (LEL/CH
4
).
Agency-issued Conditions of Use and Warnings
Ensure all part-use restrictions (e.g., battery) meet any agency-mandated conditions of use.
Ensure all instrument-configurable settings (e.g., always-on setting) meet any agency-mandated conditions of
use. When using instrument-compatible Industrial Scientific docking stations, maintain mandated settings
through the software (e.g., iNet Control or Accessory Software) or by manually configuring the instrument
settings after docking.
The Ventis MX4 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 T
amb
: -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 is used in the diffusion mode and has
been calibrated to 50% LEL CH
4
, and when the monitor is used in the aspirated mode with an extended range
lithium-ion battery and has been calibrated to 50% LEL CH
4
.
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.
The equipment complies with the standards IEC 60079-29-1 and EN 60079-29-1 for methane, propane, and
hexane with the following exception: as for the methane (mine) detector, the battery run time was verified to be
seven (7) hours rather than the eight (8) hours recommended by the standards, respectively.
MED-certified instruments may be used only when configured and maintained to disallow power-off when the
unit is in alarm.
The Mine Safety and Health Administration (MSHA) has approved the Ventis MX4 as a Permissible Multi-Gas
Monitor with the following warnings:
MSHA approved for use with either the P/N 17134453-X2, 3.7 volt, lithium-ion battery or P/N 17148313-2,
3.7 volt, lithium-ion extended battery pack assembly only. The battery pack is not user-replaceable. The
monitor battery and the lithium battery on the main PCB are technician replaceable only. Charge battery
pack with an ISC battery charger designed for use with this monitor in fresh air locations only.
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