- Portable differential manometer provides differential pressure measurements in low-pressure gas systems
- For use performing leak tests, setting delivery pressures, making regulator adjustments, and confirming pressure switch operation
- -55 to +55 inches H20 measuring range and + or - 0.3% full scale accuracy
- Units of measure include performing leak tests, setting delivery pressures, making regulator adjustments, and confirming pressure switch operation
- LCD with backlight and data hold provides access to measurements
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Supco DDM55 Dual Input Digital Differential Manometer with LCD Display, -55 to 55" H20 Measuring Range, 0.01" Resolution, Battery Operated
|Price:||$77.79 & FREE Shipping. Details|
Specifications for this item
|UPC||687152201433 , 787461660706|
|EAN||0787461660706 , 0687152201433|
|Item Weight||8 ounces|
|Number of Items||1|
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The Supco DDM55 digital manometer performs differential pressure measurements in low-pressure gas systems, including performing leak tests, setting delivery pressures, making regulator adjustments, and confirming pressure switch operation. The instrument has a -55 to +55 inH20 measuring range, + or - 0.3% full scale accuracy, and includes eleven units of measure including performing leak tests, setting delivery pressures, making regulator adjustments, and confirming pressure switch operation. The LCD has a backlight for viewing in a variety of lighting, and a data hold function to retain the last reading for recording. The manometer is powered by one 9V battery (included) or external 9V DC power, and includes flexible tubing, 1/8" MPT x 1/8" barb access fitting, and a soft carrying case.
|Pressure range||-55.0 to +55.0 inH20|
|Accuracy||+ or - 0.3% full scale accuracy|
|Response time||0.5 seconds, typical|
|Engineering units||InH20, ftH20, cmH20, psi, bar, mbar, kPa, inHg, mmHg, ozin2, Kgcm2|
|Pressure limits||10 psi|
|Connection||1/8" MPT x 1/8" barb|
|Operating temperature||32 to 122 degrees F/0 to 50 degrees C|
|Power requirements||9V battery or external 9V DC|
Manometers measure the pressure of a liquid or gas. They are used in laboratory, medical equipment, engineering, automotive, and heating, ventilation, and air-conditioning applications. Manometers measure any combination of gauge, absolute, or differential pressures. Gauge pressure is the amount of pressure in a system relative to the ambient pressure, absolute pressure is the amount of pressure in a system relative to an absolute vacuum, and differential pressure is the difference between two pressures. Analog manometers are composed of columns of liquid, and they use gravity and the liquid's density to calculate pressure. Because they have no moving parts, analog manometers do not require re-calibration. Digital manometers have pressure sensors that are connected to a system with a hose to provide a digital readout of the amount of pressure present in a system. They use microprocessors to calculate pressure, and they require periodic calibration to help ensure accuracy.
Supco manufactures test instruments and replacement parts for heating, ventilation, air conditioning, and refrigeration systems. The company, founded in 1945, is headquartered in Allenwood, NJ.
What's in the Box?
- Supco DDM55 differential manometer
- Flexible tubing
- 1/8" MPT x 1/8" barb access fitting
- 9V battery
- Soft carrying case
Top Customer Reviews
Accurate and easy to read.
Serves the limited applications well but wish range was greater.
Last week I turned this on and it appeared the battery was low. Screen flashed on like normal but faded off instantly. I installed a brand new battery: same result. Frustrated, I set it down rather firmly on granite counter and suddenly it worked like normal. Haven't had a problem before or since.
So while I have a backup, I was surprised (as well as I treat this device) it sort of had a malfunction here. It tests the same as my backup, so maybe some kind of a connection/humidity thing? Specific to my device only? Anyway, if someone else experiences this, just give it a gentle tap. I downgraded my rating a star because of this.
Most Recent Customer Reviews
This is cheaply made it hasnt worked since i boight it. Cant turn it on. Cant return it. Supco used to be a great product.Published 4 months ago by Jeff Brown
Works very well. It's a good brand name so it should last.Published 14 months ago by Chris Reddekop
works great for troubleshooting low pressure gas problems anything below 55" water column.However,If you work with 2# systems and higher you will just get an error code when... Read morePublished 14 months ago by ppp
Love this manometer. Has dual ports, and it will calculate the total static pressure by itself. Great piece of gear, and easy to use.Published 16 months ago by Patrick Walsh
Great little manometer, used already to get some static pressure readings on a couple of furnaces. Accurate and just what I needed.Published 17 months ago by Ted
For basic diy'er troubleshooting it works out of the box. Provided me peace of mind after swapping a gas valve on the furnace. Very easy to use.Published 19 months ago by RENDERKING