DWYER INSTRUMENTS 475-1-FM Handheld Manometer, 0 To 20 Inch WC

Dwyer 475-1-FM handheld manometer is suitable for air & gas differential pressure measurement in boilers, combustion equipment and HVAC system operations. It measures positive, negative or differential pressures of air and natural gases.

Features:

• Dwyer manometer, 475-1-FM, comes in a rugged aluminium case for secure transportation, withstanding harsh industrial abuse and abrasion resistance.
• It features a large LCD for ease of reading and simple operation.
• This manometer from Dwyer comes with simple dual push pads for easy power on / off function.
• It offers pressure unit selection for easy pressure measurement and auto-zero operation for minimising system complexity.
• This handheld model can withstand a maximum pressure of 10 psi.
• It can be used in Class I, Div I, Groups A, B, C, D and T4 hazardous environments.
• This 9V alkaline battery-operated unit has an accuracy of +/-0.5% of full scale from 0 to 140 degrees Fahrenheit for measuring negative, positive or differential pressures.

Standards and Approvals:

• CE
• FM

Frequently Asked Questions:

Q. What liquid is used in a manometer?

A. The most common fluids are alcohol, water and mercury.

Q. Why is alcohol used in a manometer?

A. Because of its low density, alcohol allows for a longer column than other fluids in manometers. It also gives the inclined tube a proper meniscus.

Q. What pressure does a manometer measure?

A. Manometers are used to measure pressure which is defined as the force produced by a gas or liquid per unit of surface area due to the effects of gravity on the weight of that gas or liquid.