3 Product Functions
3-4. Names and functions for each part
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3-4-2. Indicator unit (same as the base unit indicator part)
Number in
the figure
Name Function
(1)
LCD display
Displays gas concentration and status message.
(2)
POWER lamp
Power lamp.
(3)
ALARM lamp
Lights up at a gas alarm state.
(4)
FAULT lamp
Lights up at a fault state.
(5)
MODE key
Used for adjustment work.
(6)
/ZERO key
Used to select a maintenance mode item, increase/decrease a
reading in span adjustment or alarm test, etc.
(7)
key
Same as (6).
(8)
TEST/SET key
Used to enter the alarm test mode. Confirms a value, etc. in
each mode.
(9)
POWER switch
Power switch of each channel.
(10)
Maintenance mode selector
switch (MAINT switch)
Used to switch to the target channel for zero or span
adjustment.
(11)
Individual alarm contact output 2
Used as either gas alarm contact or fault alarm contact.
(Gas alarm contact used as standard)
(12)
Individual alarm contact output 1
Used as gas alarm contact.
(13)
External output signal
Either 0/6/12 VDC or 4-20 mA output can be selected.
(0/6/12 VDC output selected as standard)
(14)
Sensor terminal
Connects a detector head.
(15)
Pump output
Used for the power supply of the pump of suction type detector head.
(3)
(7)
(8)
(2)
(1)
(5)
(6)
(11)
(13)
(14)
(15)
(4)
(9)
(10)
(12)
