The Meriam 10AA25 manometer is a versatile, economical instrument for the measurement of pressures, vacuums or differential pressures. The U-tube type manometer is a primary basic standard of pressure measurement. Pressure measurements are accomplished by balancing a vertical head of indicating fluid with the pressure to be measured. As there are no cams, gears or levers to operate in the manometer, the readings obtained are always accurate.

Model 10AA25 Construction
The manometer has a rigid cast aluminum body frame protecting the glass U-tube on three sides. Mounting holes are provided in the frame for mounting to a wall, column or other suitable structure. The clean-out head at the top of the instrument seals the indicating tube legs and also provides for the external pressure connections to the manometer.
The manometer head fastens to the body by a single nut and is quickly and easily removed when necessary. This exclusive Meriam clean-out head feature permits cleaning and filling of the U-tube without disconnecting the piping to the manometer head. A ¼” female pipe connection is provided out the left and right sides of the clean-out head as standard. Pressure connections at rear or top of head can be furnished when specified. Manometer clean-out heads of cast iron, stainless steel or PVC are available for special corrosive applications.

The manometer scale is located between the tube legs and overlaps the tube legs to a degree that eases reading at the meniscus position.  The scale is readily adjustable for zero indicating fluid level.

The simple engineered method of supporting and sealing the U-tube in this manometer permits easy tube replacement in the field.


Accessories
Return Well Model: Z934H50
Bubbler Model: Z931R or Z931S
Line Trap Model: Z932R or Z932S
Valve & Piping Manifold: Z943AC300 – Steel
                                       Z943AS300 – SS
Pressure vacuum Variator Model: Z971A3
Table Mounting Stand Model: Z912A
Slip On Cover Model: Z915C

Ordering Information
To order Meriam’s 10AA25 manometer custom-made to your specifications, please contact your Meriam sales representative with the following information:
• Head Material
• Range
• Required Scale