Ventis™ MX4 Product Manual
5 © 2014 Industrial Scientific Corporation
The monitor is to be calibrated according to the procedures in the instruction manual only.
The aspirated version of the Ventis MX4 is only approved for use with the extended battery pack.
The monitor must display methane in the percent-by-volume mode (0-5%) for compliance determinations
required by 30 CFR Part 75, subpart D.
SANS 1515-certified units may be used only as follows:
Diffusion applications
Configured and maintained to disallow power-off when the unit is in alarm
The Methane alarms are set as follows: low alarm = 1%vol and high alarm =1.4%vol
With approved Lithium-ion battery packs (see Ventis MX4 Accessories and Parts in this manual).
Recommended Practices
Industrial Scientific Corporation recommends the monitor be fully charged (when equipped with a rechargeable
battery pack), configured, and calibrated before first time use. If the lithium-ion battery is deeply discharged, it
can take up to an hour for the instrument display to indicate that the battery is charging. Monitors used
infrequently should be fully charged every four months.
No part of the unit should be covered by any garment, part of a garment, or other item that would restrict the
flow of air to the sensors or impair the operator's access to the audible, visual, or vibration alarms.
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.
When reassembling the instrument or installing a battery pack, maintain ingress protection by tightening each
fastener to its stated torque value (see the “Ventis MX4 Monitor three-Dimensional Diagram” and its key in this
manual).
Contact your service representative immediately if you suspect that the Ventis MX4 is working abnormally.
Industrial Scientific recommends the “2 & 2 Sampling Rule” when sampling with a motorized pump and tubing,
one should allow for 2 minutes plus 2 seconds per foot of tubing used, prior to noting the monitor readings.
This allows time for the gas to reach the instrument and for the sensors to adequately react to any gases
present. Industrial Scientific recommends that clear urethane tubing, part number 17065970, be used with the
pumped versions of the Ventis MX4 when sampling for the following gases: Nitrogen Dioxide (NO2) and Sulfur
Dioxide (SO2).
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