TS21I_IR_CO2 User Manual
Vighnaharta Technologies Pvt Ltd Page
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Operation
When unit is power ON, it goes in to an initial warm up period of 90 seconds. After this period is
over, unit enters into scan mode when it continuously monitors gas concentration level in the
atmosphere. When gas concentration exceeds low or high alarm threshold levels, relay output
changes accordingly. It shows gas concentration level between 0 and 5%v/v with LED indication
on front panel. TS21I_IR_CO2 has two settable alarm levels. Low alarm level and High alarm level.
Fault Relay operate on supply voltage below 18V or more than 29V and also according sensor open
or short with LED indication on front panel.
It uses four magnetic keys which operate using single magnetic stylus to do settings like low / high
alarm levels, relay output type and so on.
Front panel of typical TS21I_IR_CO2 is shown as below.
Relay Settings:
TS21I_IR_CO2 has threerelay outputs:-
Relay1 for low alarm condition,Relay2 for high alarm condition and Relay3 for Fault operation.
User can use it as a NO or NC type output using the respective jumper adjustments. User can set
relay output type for both relays as PULSE type or LATCH type.
Pulse type output: Relay trips for 5 sec and comes back to its previous state.
Latch type output: Relay remains latched till the unit is reset.
If unit is connected to a Gas Detection Panel,using MODBUS communication, the Gas Detection
Panel gives an alert depending on the status of TS21I_IR_CO2.
POWER ON
LED
4 Digit LED
Display
Low and High
Alarm LED
Fault LED
Press Key to
enter into Menu
Press Key
to Exit
