TS 21 I-HC User Manual
Vighnaharta Technologies Pvt. Ltd
Page
10
of
19
Understanding controls on front panel
LED Indicators
1.
ON
Power
ON
LED. Green LED turns on when power is ON. It
indicates Power On status of the unit.
2.
L – Alarm
When gas concentration exceeds low threshold level, TS 21 I-
HC PPM generates low alarm condition. For low alarm
condition, orange LED turns ON. If relay1 output is pulse type,
LED remains on for 5sec. If relay1 output is latch type, LED
remains on till the unit is reset.
3.
H- Alarm
When gas concentration exceeds high threshold level, TS 21 I-
HC PPM generates high alalrm condition. For high alarm
condition, red LED turns ON. If relay2 output is pulse type,
LED remains on for 5sec. If relay2 output is latch type, LED
remains on till the unit is reset.
4.
LED Display
Four digit - Seven Segment LED display shows the current gas
concentration in % LEL. Also it shows cconfiguration settings
like current / voltage range.
Example, the seven segment LED display shows the
56% LEL
of gas concentration.
Magnetic Keypad -
Four magnetic keys operate using magnetic stylus.
1.
ENTER
Move stylus to
ENTER
key to enter into system to access
menus. This key has dual function. It is usd to Enter or Save
the data. User can select some menu or can savesetings made
by the user. If user presses the key during Idle mode, it
displays the menu.
2.
ESCAPE
Move stylus to
ESCAPE
key to exit from the current menu. If
user exits without saving, ccurrent settings will not be saved.
3.
UP
Move stylus to
UP
key to move menu up side or increment the
menu.
4.
DOWN
Move stylus to
DOWN
key to move menu down side or
decrement the menu.
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