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the bar indicates the last peak value obtained and filled boxes indicate current value. The following
figure describes how to interpret the hydrogen meter:
7.3
KEYPAD
A 5 button keypad is used to alter the LCD, change settings and initiate special functions from the
Configuration Menu:
Pressing ▲ (up arrow button) displays the peak hydrogen reading.
Pressing ▼ (down arrow button) displays the current percent hydrogen concentration.
Pressing ► (right arrow button) clears the peak hydrogen value.
Pressing and holding the ENTER button invokes the Configuration Menu.
Pressing ▼ (down arrow button) scrolls down through function menus or scroll down through a
numerical range.
Pressing ▲ (up arrow button) scrolls up through function menus or scroll up through a numerical
range.
Pressing the ENTER button or ► (right arrow button) selects the function.
Pressing ◄ (left arrow button) backs out of menus.
7.4
CONFIGURATION MENU
The following functions will be found in the Configuration Menu:
Information Disp – model information
Firmware Rev – firmware revisions
Serial Number – model serial number
Calibration Date – date of the last factory calibration
Set Alert/Alarm – Define hydrogen level that will trigger the alert and alarm signals.
Alert Level –the level of hydrogen that will cause the LED to turn amber
Alarm Level – the level of hydrogen that will cause the LED to turn red
Set H2 Range – Define hydrogen sensitivity range (standard factory setting: 0% to 5% hydrogen by
volume).
Low H2 Range – The lowest level of hydrogen (standard factory setting: 0% hydrogen by
volume) to correspond with the low range analog output setting.
High H2 Range – The highest level of hydrogen (standard factory setting: 5% hydrogen by
volume) to correspond with the high range analog output setting.
Configure IDAC – define analog output range (standard factory setting: 4mA to 20mA)
Low Range – low level analog output (standard factory setting: 4mA) to correspond with
lowest level of hydrogen range
High Range – high level analog output (standard factory setting: 20mA) to correspond with
highest level of hydrogen range
Error – analog output (standard factory setting: 3mA) of error status
90000012 R8
HY-ALERTA™ 1600, Intrinsically Safe Area Hydrogen Monitor
Hydrogen = 4.67%
OPERATING MANUAL
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