Enmet EX-5150-MOS Manuel d'utilisateur télécharger pdf (Page 9)

EX-5150-MOS ENMET Corporation

4.1.3 Purge

Purging is a function that temporarily increases the sensor heater voltage to clean off contaminants. Some sensors operate at

higher heater voltages where purging is not required. The EX-5150-MOS S/T is configured at the factory for the installed

sensor purging requirements.

Purge times vary form 5 – 25 minutes depending on the sensor installed.

Some sensors require additional purge time after start up. Particularly if the sensor is new or the system powered down for an

extended period of time.

To initiate a purge: Turn the power off and back on. This will initialize a purge cycle.

See Figure 5 for the Operational portion of the Maintenance Menu Flow Chart.

4.2 Normal Display Mode

When the EX-5150-MOS is installed as described in section 3, and in clean air, the POWER green LED is on, the display is lit

and the information on the display is measurement of the target gas detected by the EX-5150-MOS.

The red alarm and fault

LEDs are not lit.

To advance through displays of operational information tap the magnet over the M

ENU

button.

OTE

Software revision may cause variations of display output.

See sequence of operational information below:

Display Measurement of the target gas

Tap the magnet over the M

ENU

button

Display indicates Alarm 1 Set point

Tap the magnet over the M

ENU

button

Display indicates Alarm 2 Set point

Tap the magnet over the M

ENU

button

No Function for the

ELECT

button

in this mode

Display indicates Alarm 3 Set point

Tap the magnet over the M

ENU

button

Display indicates mA Span range

(Full Scale)

Tap the magnet over the M

ENU

button

Display returns to gas measurement

Operational Display Flow Chart

4.2.1 Alarm Conditions EX-5150-MOS

There are three alarm set points available. These alarm set points can be changed within limits; see the maintenance section of

this manual for the procedure.

If the gas concentration increases above that of the alarm set point, the associated red LED is lit.

0LEL

A1: 10

ELECT

ENU

A2: 20

ELECT

ENU

A3: 50

ELECT

ENU

mA: 100

ELECT

ENU

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 18 19

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Enmet EX-5150-MOS Manuel d'utilisateur Page 9

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