Oldham BM25 Operating Manual

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ATEX and IEC Ex
Industrial Scientific Oldham
CE 0080
BM25
IP66
Ambient T : -20° C +55° C
II 2G / I M2
Ex ia d IIC T4 Ex ia d I
INERIS 05ATEX0044
IECEX INE 06.0002X
Do not open in explosive atmospheres
Potentially hazardous electrostatic charges – see instructions
serial number
manufacture year
Warning : read instructions carefully before starting up. The component change could
compromise the intrinsic safety.
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I
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V
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M
M
A
A
I
I
N
N
T
T
E
E
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N
A
A
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C
C
E
E
Gas detectors are above all safety instruments. Recognizing this fact, Industrial Scientific
Corporation recommends that a functional (bump) test be performed on every portable gas detector
prior to each use. A functional test involves the injection of a gas of sufficient concentration at the
sensor level to trigger pre-set alarms. This test does not, in any event, replace a full calibration of
the sensor.
Industrial Scientific further recommends that a full instrument calibration be performed using a
known and certified concentration of calibration gas monthly to ensure accuracy of the instrument.*
If a gas detector does not respond correctly to a gas test, a full calibration with a standard gas is
mandatory.
These recommendations are consistent with applicable industry safety protocols and with the
standards and directives relative to the safety of industrial sites. Furthermore, Industrial Scientific is
not responsible for procedures implemented on a site.
IMPORTANT:
The BM25s are programmed by the manufacturer for an automatic maintenance check after twelve
months if the calibration has not been done. (“calibration due” appears on screen).
Switch off the instrument before any maintenance operation.
The operations explained in this chapter must be performed by authorized, qualified
personnel only as they could adversely affect detection safety.

Oldham BM25 Specifications

General

Brand	Oldham
Model	BM25
Category	Measuring Instruments
Language	English