Settings; Startup - H2Scan HY-ALERTA 1600 Operating Manual

4.4

SETTINGS

Located on the front of the unit next to model number marking, a Status Indicator displays basic unit
functions as described below. Default amber and red Status Indicator LED settings are 1% and 2%
hydrogen by volume, respectively.
Normal operation / Hydrogen detected is below 1% hydrogen by volume
Warm-up / Hydrogen detected between 1% and 2% hydrogen by volume
Hydrogen detected above 2% hydrogen by volume / Unit fault detected
The unit's operational and output settings have been configured at the manufacturer with settings
specified at the time of purchase. Settings may be changed through the use of serial port.
If settings are changed from those set by the manufacturer then it is the user's
WARNING:
responsibility to understand the implications to the connecting equipment monitoring the unit.
5

STARTUP

Power must be applied to the unit before connecting the serial cable. Power is connected via the Power/
Analog signal connector. The serial cable can be connected any time after power has been applied to the
unit. Once power is applied, the unit executes a warm-up sequence lasting about 5 minutes. The status
LED will be amber in color during warm-up. It will become green, amber, or red when the unit is ready.
The following operations will be completed in this warm-up sequence:
Heat the sensor to operating temperature.
Perform the Power-On-Self-Test (POST).
The analyzer is designed to be exposed to air with no hydrogen most of the time. For optimal performance
keep any hydrogen exposure to the sensor to less than one hour. If the hydrogen exposure exceeds this
time, the sensor may need to be reconditioned by leaving it powered on in air for a few days.
5.1 SETTINGS
Located on the front of the unit next to model number marking, a Status Indicator displays basic unit
function as described below. Default amber and red Status Indicator LED settings are 1% and 2%
hydrogen by volume, respectively.
Normal operation / Hydrogen detected is below 1% hydrogen by volume
Warm-up / Hydrogen detected between 1% and 2% hydrogen by volume
Hydrogen detected above 2% hydrogen by volume / Unit fault detected
The unit's operational and output settings have been configured at the manufacturer with settings
specified at the time of purchase. Settings may be changed through the serial port.
WARNING:
IF SETTINGS ARE CHANGED FROM THOSE SET BY THE MANUFACTURER THEN IT IS THE USER'S
RESPONSIBILITY TO UNDERSTAND THE IMPLICATIONS TO THE CONNECTING EQUIPMENT
MONITORING THE UNIT.
Although the unit will respond to 90% or better of a concentration change within 60 seconds, the
signal will continue to settle. This period varies with concentration and other conditions. For best
90000012 R8
HY-ALERTA™ 1600, Intrinsically Safe Area Hydrogen Monitor
Wire Color Description
Black +TxD RS422
Blue -TxD RS422
White +RxD RS422
Brown -RxD RS422
Status
Status
OPERATING MANUAL
Indicator Color
GREEN
AMBER
RED
Indicator Color
GREEN
AMBER
RED
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