An injury or failure can result | Sierra Monitor Corporation PF2A7H

SAFETY

The Digital Flow Switch and this manual contain essential information for the protection of users and others from possible injury and property damage and to ensure correct handling.

Please check that you fully understand the definition of the following messages (signs) before going on to read the text, and always follow the instructions.

IMPORTANT MESSAGES

Read this manual and follow its instructions. Signal words such as WARNING and NOTE will be followed by important safety information that must be carefully reviewed.

	WARNING	Indicates a potentially hazardous situation
	WARNING	which could result in death or serious
		injury if you do not follow instructions.

	NOTE	Gives you helpful information.
	NOTE	Gives you helpful information.

WARNING

Do not disassemble, remodel (including change of printed circuit board) or repair.

An injury or failure can result.

Do not operate beyond specification range.

Fire, malfunction or switch damage can result.

Do not operate in a combustible gas or explosive gas atmosphere.

Fire or an explosion can result.

This flow switch is not an explosion proof type.

Do not use with a combustible fluid.

Otherwise, a fire or an explosion or damage may potentially result. This flow switch is for air only.

NOTE

Follow the instructions given below when handling your flow switch. Otherwise, the switch may be damaged or may fail, thereby resulting in malfunction.

・Do not drop it, bring it into collision with other objects or apply excessive shock (490m/s2 or more).

・Do not pull the lead wire with force nor lift the main unit by holding the lead wire. (Pulling strength less than 49N)

・Wiring correctly.

・Do not wiring while power is on.

・Do not wire with the same circuit of power line or high-voltage line. ・Do not use in a place in which water, oil, or a chemical is

splashes.

・Install a filter and/or mist seprator on the primary side (inlet side) if foreign matter is feared to mix in a fluid.

・Flush the dust in the piping with air blow before piping the switch. ・Do not push the setting buttons by a sharply pointed object.

・Apply the power.supply when the flow rate is zero.

・Start measurement by the flow switch three seconds after turning on the power.

・Maintain the switch status for measurement output before setting when initializing or setting a flow rate of the flow switch. Measure after checking impacts to the equipment.

・Opening and closing of flow passage by restrictor should be within max. measured flow rate value.