Enmet MedAir 2000 Instrukcja Użytkownika Pobierz pdf (Strona 13)

MED AIR 2000 ENMET Corporation

4.4 Audio Defeat

With the alarms in the non-latching configuration, pressing the ALARM ACKN/AUDIO DEFEAT switch during an

alarm silences the audio alarm.

With an alarm in the latching configuration, pressing the ALARM ACKN/AUDIO DEFEAT switch during an alarm

silences the audio alarm and unlatches the associated relay(s).

4.5 Display

In clean air with the correct dew point, the display is as shown in Figure 4, for the sensor(s) installed in the MED AIR

2000. This position of the display is termed the "operational display". As explained below, the display can be

changed to furnish other information by using the OPTION and SELECT switches.

Concentrations of CO are given in PPM (parts per million parts of air). Dew point is given in degrees Fahrenheit at 55

PSIG; this can be changed to degrees Centigrade by pressing the SELECT switch. Oxygen concentration is given in

per cent by volume. When sample flow is reduced below a limit, the display switches from "Flow: yes" to" Flow: no",

or from "Flow: y" to "Flow: n".

4.6 Operational Menu

The operational menu allows the user to:

 View alarm set point concentration values

 View alarm latching configurations

 Enter the maintenance menu with the proper key.

The operational menu is accessed with the OPTION and SELECT switches. The operational menu flow chart is

shown in Figure 5,

 The OPTION switch is indicated with a "O"

 The select switch is indicated with a "S".

If the instrument is left at any location in the operational or maintenance menus, other than the operational display,

with no action taken for a period of 45 seconds, it returns to the operational display.

Figure 5: MED AIR 2000 Operation Menu Flow Chart

Operational Display

DEW POINT

°C ↔ °F

000 PPM 20.9%

037 °FFLOW:y

View

Alarms & Latches

run Maintenance

To Key

ppm CO: 10

Latch: Yes

o Function

°F DP: 39.0

Latch: Yes

o Function

: 19.5 23.5

Latch: Yes Yes

o Function

O = Option Switch

S = Select Switch

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 29 30

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