Digital Manometers

Our Differential Pressure Manometers are the perfect tools to measure the pressure differences in HVAC equipment and industrial air handling applications. 
They can display measurements in 11 different units of measure and have data hold and differential functions and a backlight feature for those dark nooks and crannies. They are the perfect replacement for your broken or obsolete draft gauge or to setup today’s new gas valves and gas pressure regulators on both natural and propane gas burners.

Included are two rubber hoses, two brass sampling tubes and a quality battery, everything you'll need and at a great low price. Field proven meters for draft readings on residential and C/I applications and for setting gas systems. We work and teach with these meters everyday, so we know what you need and these work great.  

NOTE: It's important to note that our meters have been custom made with standard 1/4" barbed hose connections unlike many that are 1/8". These 1/8" connections do not mate with US gas adapters and so require different hoses, tubes and adapters. Unlike many others we include quality rubber hoses and brass sampling tubes and both of our manometers also come with heavy duty cases and Energizer© batteries.  

Technical Data for Manometers

Measurement Unit

Range +/-

Resolution

inH2O (inches of water)

0 to 55.4

0.1

PSI

0 to 2.0

0.001

mbar

0 to 137.8

0.1

kPa

0 to 13.79

0.01

inHg

0 to 4.072

0.001

mmHg

0 to 103.4

0.1

ozin2

0 to 32.0

0.01

ftH2O

0 to 4.612

0.01

cmH2O

0 to 140.6

0.1

kg/cm2

0 to 0.140

0.001

bar

0 to 0.137

0.001

Specifications for 88M:
Display: Multifunctional LCD
Accuracy: +/- 0.3%
Repeatability: +/- 0.2%
Linearity: +/- 0.29%
Pressure Range: +/- 5.0 PSI, max pressure 20.0 PSI
Response Time: 0.5s
Power: 9V Battery
Size: 6-1/2" L x 2-1/4" W x 1-1/4" H

88M Package includes:  

Specifications for 8890A4:
Display: Multifunctional LCD
Accuracy: +/- 0.3%
Repeatability: +/- 0.2%
Linearity: +/- 0.29%
Pressure Range: +/- 5.0 PSI, max pressure 20.0 PSI
Response Time: 0.5s
Power: 9V Battery
Size: 8-1/4" L x 3" W x 2" H

 

8890A4 Package includes:  

One year warranty. The final assembly and checkout is performed in our shop in Massachusetts with Energizer© batteries. 
Meter and accessories have various countries of origin.

Check and compare our accessory package and remember selling and teaching meters has been part of our business for over 20 years!


240 - Gas Pressure Tap Fitting
 The #240 Gas Pressure Tap Fitting is used to quickly connect a 1/4" manometer hose to gas valve (1/8"-27 npt) - one pair. The fitting fits onto most gas valves and pressure regulators and allows you to quickly check and adjust the pressure of the valve or regulator. Once the correct pressure is set a simple turn of the fitting closes it off, read Firedragon Field Note #15 here.  
The #240 also can speed your day along by using it as a pressure fitting for your draft gauge or manometer. Just drill and tap an 1/8" hole into smokehoods, fire doors or anywhere else, mount the #240 once and just open it when you need to take your readings. Buy them by the bag full, #241, and save time and money. 

NOTE: All of our adapters and testers are supplied ready to install and use and are constructed from heavy duty brass for long life and durability.

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