ENMET SPECTRUM User Manual

Page 10

ENMET Corporation

SPECTRUM Series

2.1.6 Battery Status and Low Battery Alarms

The battery status display is accessed by pressing the

OPTION

pushbutton once. When this display is "Batt=OK", the

battery energy level is sufficient for operation of the instrument. In this condition, the confidence beep occurs every
thirty seconds when the instrument is not in alarm.

When the battery energy level is low and the battery should be replaced with a new or recharged one, the battery status
display reads "Batt=low", and the instrument beeps once every five seconds to alert the user to the battery condition.
Stop Using The Instrument And Exit An Area That Could Be Hazardous To Safety Or Health. When the battery energy
level is critically low, and battery failure is imminent, the battery status display reads "Batt=LOW", and the instrument
beeps once every two seconds. An alarm condition at this point could cause the instrument to completely shut off.
Replace the battery immediately. The user cannot go past the battery status display until the depleted battery is
replaced with a fresh one.

OTE

A low battery may cause a “Cell Out” indication. Check or replace the battery if “Cell Out” is displayed.

When the battery energy level drops below the critically low point, the instrument automatically shuts off, and cannot
be used until the battery is replaced.

Two types of batteries are available for use with the

SPECTRUM

: alkaline and rechargeable Nicad. They have

different end-of-life discharge characteristics. Either replace a battery with the same type, or go to the "set BATT"
portion of the maintenance menu, and select the new type being used.

OTE

The rechargeable NiCad battery is no longer available.

AUTION

If the "set batt" selection is not identical with the battery being used, incorrect low battery indications are

furnished.

2.1.7 Data

The

SPECTRUM

retains the maximum and minimum gas concentration values encountered since turn-on, or since

the data was cleared and reset. To access this press the

OPTION

pushbutton three times; "see DATA" is displayed.

Press the

SELECT

pushbutton; the maximum concentration since turn-on or last reset is displayed. Press the

OPTION pushbutton again; the minimum concentration since turn-on or last reset is displayed. Press the

OPTION

pushbutton again; "clr DATA" is displayed. Pushing the

SELECT

pushbutton clears the data and resets it to the

current concentration.

Pushing the

OPTION

pushbutton once more results in a display of both the countdown to the confidence beep and the

internal temperature of the instrument in degrees centigrade. Push the

OPTION

pushbutton three more times to return

to the operational display.

2.1.8 Backlight

To backlight the display for observation in a dark area, press and quickly release the

POWER / BACKLIGHT

pushbutton. The LCD backlight comes ON for a period of 45 seconds and then turnes OFF automatically. The
backlight can be turned off sooner than 45 seconds by pressing the

POWER / BACKLIGHT

pushbutton a second

time. Use the backlight feature sparingly; it is a relatively high energy user, and extensive use rapidly depletes the
battery.

2.2 Interference Gases

For each target gas, some gases other than the target gas cause a sensor response, and thus are termed "interference
gases". A compilation of known interference gases for the various target gases is given in Appendix B, along with
gases that are known to not cause a sensor response.