Instruction Manual

PT2E-1052

５−４−２．External output action

4∼20mA output version

(1)Signal transmission method : Electric current transmission (not isolated)

(2)Transmission path : CVVS

(3)Transmission distance : Below 1Km

(4)Max loop load : 300Ω at 24VDC

(5)Status signal levels

① Detection mode : 4∼20mA(depends on gas concentration)

② Gas alarm : 4∼20mA(depends on gas concentration)

③ Initial clear : 2.5mA(Fix)

④ Maintenance mode : 2.5mA(Fix)

⑤ Alarm test : 4∼20mA(depends on gas concentration)

⑥ Trouble alarm : 0.5mA(Fix)

⑦ Point skip : 2.5mA(Fix)

(6)Power interruption : 0mA

Relations between gas concentration and output are shown below;

CAUTION

4∼20mA output has been adjusted. Even if re-adjustment is required after

installation, do not operate without our permission.

Please contact with our nearest agent or RIKEN KEIKI if it is required.

２.５ｍＡ

４ｍ

Ａ

２０ｍ

Ａ

２２ｍ

Ａ

Full scale

Gas concentration

Output

６％ of full scale

(

Zero su

ression level

)

Detection mode

Maintenance mode