ENMET MX-2100 - Manual (Page 3)

MX2100 ENMET Corporation
1
1.0 Introduction
1.1 Warnings and Cautions
The MX-2100 gas detectors are designed to detect hazardous atmospheric conditions. An indication of life threatening hazards
should be taken very seriously. NEVER ignore an alarm condition.
Read this manual completely before engaging in field use of this instrument.
W ARNINGS :
•
Any rapid upscale combustible gas reading followed by a declining or erratic reading may indicate a gas concentration
beyond the upper-scale limit. This may indicate a flammable concentration.
•
Off-scale readings may indicate a flammable concentration.
•
Electromagnetic interference (EMI) signals may cause incorrect operation.
•
Before each day’s usage, instrument sensitivity should be tested on a known concentration of methane between 25-50%
LEL. Accuracy must be within –0 to +20% of the actual concentration applied. Accuracy may be corrected, if necessary,
by performing sensor calibration.
•
Oxygen deficient conditions can cause lower combustible gas readings than actual concentrations.
•
Oxygen enriched conditions can cause higher combustible gas readings than actual concentrations.
•
The instrument batteries should only be charged in a non-hazardous location.
•
The instrument should only be connected to a computer in a non-hazardous location.
C AUTIONS :
•
In case of an atmospheric alarm condition, follow your organization’s established procedures for such a situation.
Evacuating the affected area is usually the first course of action, followed by ventilation and re-testing of the environment
prior to re-entry.
•
Do Not store the instrument with the calibration cover, part number 02612-003, attached. Damage to the sensor may
occur.
•
Silicone compound vapors may adversely affect the MX-2100 instrument’s standard combustible sensor causing lower
readings than actual concentrations. If the instrument has been exposed to silicone vapors it is strongly recommended that
the instrument be recalibrated prior to its next use. Repeated exposure to silicone compounds will prematurely destroy the
standard combustible sensor.
•
The sensor sampling area must be kept clean. Contamination of this area can prevent proper operation of the sensors.
•
Never start the calibration procedure unless the corresponding cylinder of gas is available. Scrolling through the
calibration menu without applying corresponding gas will cause the installed sensor to be out of calibration and showing a
Fault condition. If instrument is new or otherwise in proper working order, this problem can only be corrected by
performing the complete calibration procedure with proper calibration gas.
Any sensor that fails calibration procedures should be replaced and recalibrated immediately.
Users may refer to ANSI/ISA RP12.13 or an equivalent international recommended practice for guidance in the use of
combustible gas detection equipment.
MX-2100 instruments have an approval for Intrinsic Safety and are suitable for use in Hazardous Location environments.
N OTE : All specifications stated in this manual may change without notice.