Riken Keiki GD-F4A-SC-A, Руководство по эксплуатации

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4
３－２．Name of each part and functions
① Oxygen sensor : Galvanic type sensor to detect oxygen content.
② Sensor holder : This is a retainer to hold the oxygen sensor
(equipped filter inside).
③ Sensor lead wires : Lead wires for oxygen signal outputs.
④ Terminal strip 1 : Relayed terminal for sensor lead wires and external cable.
⑤ Cable gland : Entrance to lead the cable (φ8 - φ11mm) from outside.
⑥ Hinge : Hinge for front door.
⑦ Lock : Lock for front door.
⑧ Mounting hole : Mounting hole to fix this unit on the wall surface.
⑨ Terminal strip 2 : Relayed terminal for input/output signal use to the signal converter.
⑩ 4mA adjusting hole : VR hole to adjust 4 mA of 4-20mA output(factory set)
⑪ SPAN adjusting hole : VR hole to adjust SPAN
⑫ ZERO adjusting hole : VR hole to adjust ZERO
⑬ Front door : Front door for the unit
⑭ Signal converter : Circuit unit to convert the sensor output into 4-20mA
⑮ Protective earth bolt : Bolt for protective grounding.
３－３．
System composition
(1) Intrinsically safe system
Detector
head
Zener barrier
Indicator
/alarm
unit
Hazardous area
Non-hazardous area
In-between head and zener barrier :
CVVS 1.25mm
2
2-core or equivalent (max 250m)
However, that of head and indicator/alarm unit :
CVVS 1.25mm
2
2-core or equivalent (max 2km)
４－２０ｍＡ
①
②
③
④
⑤
⑥
⑦
⑧
⑨
⑩
⑪ ⑫
⑬
⑭
⑮