Can you use this to check water column on propane regulators ,.....10 to 12 inches of water column?

Yes, look at 12 selectable units and you see InH2O, FtH2O, cmH2O. InH20 is probably what you will use. Most natural gas and LP gas work between 2 inches and 10 inches water column(InH20)

can it be "0" before use?

Yes I have zeroed mine before use

What ID silicone tubing, fits the connectors on the top of the device? What size are the two supplied tubes?

I connected the small tubing to the 1/4" NP adapter and slipped 3/8" clear tubing over the threaded portion. The other end of the 3/8" tubing will fit nicely over the nipple on the Noritz.

need to replace a component in our water heater. Manufacturer asked us to obtain a digital manometer with a 7/16" hose. Will this work?

I used 3'8" tubing. My Monometer came with a small 3/16" tubing and a 3/16" tubing to 1/4" NP fitting. 3/8" tubing fits the threaded portion of the 1/4" fitting.

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EHDIS Manometer, Professional Air Pressure Meter, Dual-Port HVAC Digital Manometers Gas Pressure Tester Differential Gauge

Product ID: 164793784

Details

Brand
EHDIS
Item dimensions L x W x H
5.31 x 1.18 x
Material
Rubber
Number of Items
1
Unit Count
1 Count

⚡Ultra-fast 0.5s response time

📏±0.3% FSO accuracy for precision

🔄Dual-port differential pressure measurement

307.83 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚙️ Elevate your HVAC game with precision and speed – don’t get left behind!

MULTI UNIT MASTERY - Switch effortlessly between 12 selectable pressure units to suit any HVAC or gas system task.
SMART DATA HANDLING - Max/min record, data hold, and save functions keep your measurements organized and error-free.
DUAL PORT VERSATILITY - Measure single or differential air pressure seamlessly with twin input probes.
SPEED MEETS EFFICIENCY - Get instant results in just 0.5 seconds, powered by a 32-bit MCU for ultra-low power consumption.
PRECISION AT YOUR FINGERTIPS - Experience ultra-accurate readings with ±0.3% FSO accuracy and 24-bit ADC technology.

The EHDIS Manometer is a professional-grade digital air pressure meter designed for HVAC and gas pressure systems. Featuring dual-port inputs for differential measurement, ultra-fast 0.5-second response, and ±0.3% FSO accuracy, it supports 12 pressure units and smart data functions, making it an essential tool for precise calibration, troubleshooting, and maintenance.

Specifications

ASIN	B07L641Q7L
Best Sellers Rank	#8,534 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Manometers
Brand Name	EHDIS
Customer Reviews	4.4 4.4 out of 5 stars (1,406)
Item Dimensions	5.31 x 1.18 x 2.17 inches
Manufacturer	Ehdis
Material Type	Rubber
Number of Items	1
Part Number	CR410
UPC	738920594353 738920594377
Unit Count	1 Count

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