YOKOGAWA OX100, User Manual

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<2. Installation >
2-7
IM 11M10A01-01E
2.4.2 Connecting to an External Instrument
CAUTION
This instrument provides three outputs: 4 to 20 mA DC (signal), “Alarm” contact, and “Fail”
contact.
• 4 to 20 mA DC output from terminals 9, 10: corresponds to O
2
concentration display range 0
to 1000 ppm or 0.1 to 25%. Refer to Section 3.4 below for range setting.
• Alarm contact output from terminals 11, 12: relay contact closes if concentration exceeds
alarm setting.
• Fail contact output from terminals 13, 14: relay contact closes if sensor heater element goes
open circuit.
WARNING
To minimize the possibility of electrical shock, ensure that power source is off before wiring power cable.
2.5 Installation of Sensor
CAUTION
• Use the nipple provided as an accessory, mount it horizontally and secure it so that it cannot
vibrate.
• When tightening, for cap use torque of 1 to1.5 N • m, and for other items use torque of 2to
2.5 N • m
WARNING
• Sensor cable should be within 30 cm of sensor housing, and angle of bend (see figure
below) should not be greater than 60°.
• When mounting sensor through a 17 mm hole, mounting plate should be no greater than 4 mm
thick.
4th Edition : Oct. 23, 2019-00