Recommendations; General Information - Ventis MX4 Product Manual

Note: The peak readings and the data log readings are stored independently of one
affect the data log. Powering the instrument off or changing its battery does not affect the peak reading. These checks and balances help
promote operator safety, and serve to contain the peak readings in a "black-box" manner. In the event of a gas-related incident, this black-box
record can be useful to the safety team or a prospective investigator.

Recommendations

Industrial Scientific Corporation (ISC) minimum frequency recommendations for each procedure are summarized in
the table below. These recommendations are based on field data, safe work procedures, industry best practices, and
regulatory standards to help ensure worker safety. Industrial Scientific is not responsible for setting safety practices
and policies. These policies may be affected by the directives and recommendations of regulatory groups,
environmental conditions, operating conditions, instrument use patterns and exposure to gas, and other factors.
Procedure ISC Recommended minimum frequency
Configuration Before first use and as needed thereafter.
Calibration Before first use and monthly thereafter.
a
Bump test Prior to each day's use.
b
a Between regular calibrations, ISC also recommends a calibration be performed immediately following each of these incidences: the unit falls,
is dropped, or experiences another significant impact; is exposed to water; fails a bump test; or has been repeatedly exposed to an over-range
(positive or negative) gas concentration. A calibration is also recommended after the installation of a new (or replacement) sensor.
b If conditions do not permit daily testing, bump tests may be done less frequently based on company safety policy.
Note: The use of calibration gases not provided by ISC may void product warranties and limit potential liability claims.

General information

The zero, calibration, and bump testing tasks are in-field enabled or in-field disabled in the configuration process.
This permits or denies access to these functions from the gas monitoring mode. When any of these options is
enabled, it is accessible to all monitor users. In gas monitoring mode, a series of presses on the ON/OFF/MODE
button gives the user access to the following screens and processes in the order shown.

Gas Monitoring Screen

Days Since Calibration

Zero Initiate (if in-field enabled)
Calibration Apply Gas Screen (if in-field enabled)
o

Bump Test Initiate (if in-field enabled)

Peak Readings

TWA Readings

STEL Readings
The monitor is capable of performing two types of calibration, and this option is set in configuration mode. The
calibration type selected also determines the monitor's bump test type. With a "quick" calibration, the monitor is set to
calibrate and bump test all installed sensors simultaneously. With a "standard" calibration setting, these tasks are
completed independently for each installed sensor in the order shown below.
1. Oxygen sensor*
2. Toxic sensor 1
3. LEL sensor
4. Toxic sensor 2
*If set to the default value of 20.9% or 21%, the Oxygen sensor calibrates during the zero process and toxic 1 is the first to calibrate in the
calibration process.
The Ventis MX4 monitor can be calibrated with any of the accessories listed.

Calibration cup and/or tubing shipped with the monitor (see instructions below)

V-Cal Calibration Station (consult the calibration station manual for instruction)

DS2 Docking Station for Ventis (consult the docking station manual for instruction)
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Ventis™ MX4 Product Manual
another; therefore, clearing the peak reading does not
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