RKI Instruments GD-K71D User Manual

Page 26

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

４ｍＡ

２０ｍＡ

２２ｍＡ

Full scale

Gas concentration

Output

６％ of full scale
(Zero suppression level)

Detection mode

Maintenance mode