Optical tachometer - Revision history

Designing Buildings at 07:28, 3 January 2024

2024-01-03T07:28:14Z

← Older revision		Revision as of 07:28, 3 January 2024
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	It states: ‘Optical tachometers should be used to measure fan and pump rotational speeds in preference to mechanical tachometers since their use does not involve contact with moving machine parts. This instrument projects a narrow beam of light toward the rotating shaft or pulley on which has been fixed a strip of reflecting tape. The reflected light pulses from the tape are measured as frequency (rev/min) by the meter. To be effective, the meter should be held in close proximity to the shaft or pulley.’		It states: ‘Optical tachometers should be used to measure fan and pump rotational speeds in preference to mechanical tachometers since their use does not involve contact with moving machine parts. This instrument projects a narrow beam of light toward the rotating shaft or pulley on which has been fixed a strip of reflecting tape. The reflected light pulses from the tape are measured as frequency (rev/min) by the meter. To be effective, the meter should be held in close proximity to the shaft or pulley.’
		+
		+	See also:
		+
		+	* Inductive tachometer.
		+	* Mechanical tachometer.
		+	* Stroboscope.

	--[[User:BSRIA\|BSRIA]]		--[[User:BSRIA\|BSRIA]]

Designing Buildings at 07:22, 3 January 2024

2024-01-03T07:22:28Z

← Older revision		Revision as of 07:22, 3 January 2024
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	* Flexible ductwork.		* Flexible ductwork.
	* Mechanical ventilation.		* Mechanical ventilation.
−	* ~~Pre-commissioning~~.	+	* Mechanical tachometer.

	[[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:Definitions]] [[Category:Products_/_components]]		[[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:Definitions]] [[Category:Products_/_components]]

Designing Buildings: Created page with "[https://www.bsria.com/uk/product/qB4YRr/commissioning_air_systems_bg_492015_a15d25e1/ Commissioning Air Systems (BG 49/2015)], written by Chris Parsloe and published by BSRIA in..."

2024-01-03T07:21:00Z

Created page with "[https://www.bsria.com/uk/product/qB4YRr/commissioning_air_systems_bg_492015_a15d25e1/ Commissioning Air Systems (BG 49/2015)], written by Chris Parsloe and published by BSRIA in..."

New page

[https://www.bsria.com/uk/product/qB4YRr/commissioning_air_systems_bg_492015_a15d25e1/ Commissioning Air Systems (BG 49/2015)], written by Chris Parsloe and published by BSRIA in March 2015, explains how to commission ducted air distribution systems in buildings. It was originally published in 2013 and was then updated in 2015.

It states: ‘Optical tachometers should be used to measure fan and pump rotational speeds in preference to mechanical tachometers since their use does not involve contact with moving machine parts. This instrument projects a narrow beam of light toward the rotating shaft or pulley on which has been fixed a strip of reflecting tape. The reflected light pulses from the tape are measured as frequency (rev/min) by the meter. To be effective, the meter should be held in close proximity to the shaft or pulley.’

--[[User:BSRIA|BSRIA]]

= Related articles on Designing Buildings =

* Air conditioning.
* BSRIA articles.
* BSRIA definitions.
* Building services.
* Client commissioning.
* Commissioning building systems.
* Commissioning v testing.
* Commissioning.
* Ductwork.
* Flexible ductwork.
* Mechanical ventilation.
* Pre-commissioning.

[[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:Definitions]] [[Category:Products_/_components]]