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

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$38.99

$ 20 .99 $20.99

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About this item

  • This digital handheld manometers can measure the air pressure of the single pipe, or differential pressure of two pipes.it is suitable for measuring of ventilation and air condition systems,and widely use forgas measurement,calibration,and any trouble shooting of any gas pressure systems.
  • Ultra-low-power sensing & measurement with 32-bit MCU and 24-bit ADC make the measurement of air press faster and more accurately.Perfect for working on tankless heaters,Very handy to set gas pressures on electric valves,Using for service testing of gas pressure on domestic boilers, Measures Air Flow about your bathroom fan ect.
  • Selectable pressure range: ±2.999psi; Accuracy: ±0.3%FSO (at 25°C) ; Repeatability: ±0.2% (Max ±0.5%FSO); Linearity/Hysteresis: ±0.29%FSO.
  • 12 Selectable Units of Measure (kPa, Psi, Kgfcm2, Ozin2, Bar, mbar, inHg, mmHg, InH2O, FtH2O, cmH2O, Pa) with function: Data Hold and Error Code - Response Time: 0.5 Sec.
  • Ehdis digital manometer has Dual Input that can test / measure the differential gas pressure with its provided twin input probes.Max / minimum record function; Data save function, also has room temperature future.



Product Description

manometer,air pressure manometer,gas pressure tester,digital gas manometer,digital manometer

Digital Manometer Gas Pressure Tester

  • This Manometer can measure the air pressure of the single pipe or differential pressure of two pipes.it is suitable for measuring of ventilation and air condition systems,and widely use forgas measurement,calibration,and any trouble shooting of any gas pressure systems.
  • Ultra-low-power sensing & measurement with 32-bit MCU and 24-bit ADC make the measurement of air press faster and more accurately.Perfect for working on tankless heaters,Very handy to set gas pressures on electric valves,Using for service testing of gas pressure on domestic boilers, Measures Air Flow about your bathroom fan ect.
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Manometer Specifications and Parameters

  • Selectable pressure range: ±2.999psi
  • Accuracy: ±0.3%FSO (at 25°C)
  • Repeatability: ±0.2% (Max ±0.5%FSO)
  • Linearity/Hysteresis: ±0.29%FSO
  • Response Time: 0.5 Seconds
  • Over Range Indicator: Err 0
  • Under Range Indicator: Err 1
  • Operating Conditions:0 to 50°C (32 to 122°F)
  • Storage Conditions: -10 to 60°C (14 to 140°F)
  • Battery:4.5V(3*1.5V/AAA) NOT included batteries
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Package included

  • 1 x Manometer
  • 1 x English User Manual
  • 1 x Protector Bag
  • 1 x Metal connector
  • 2 x Rubber tube

Buttons Operation

Bower on/off Button

1.Power off status:press this button to turn on the meter.

2.Power on status:

a.press this button to open/close backlight.

b.Press this button over 2 seconds to turn off the meter.

c.Auto-off without operation 15 minutes.

C/F Button

Power on status:

1.press this button to store data( 100 data).

2.press this button over 2 seconds to exit store data.

HOLD Button

Power on status:

1.press this button to hold reading display and another operation

2.press this button over 2 seconds to make reading zero.

UNITS Button

Power on status:

1.press this button to switch pressure unit.

2.press this button over 2 seconds to clear the stored data.

DIF Button

Power on status:

1. press this button to look up stored data.

2.press this button over 2 seconds first time to exit data

3.press this button over 2 seconds twice to enter DIF measuring mode

MAX Button

Power on status:

1.press this button to look down stored data

2.press this button to enter max/min measuring mode.

Over Range

1.When the input pressure above the max range,the contents Err 0 will appear on the display.

2.When the input pressure under the min range,the contents Err I will appear on the display.

Battery Replacement.

When the low power symbol appear on display,it needs replace the new 1.5V battery.

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washtraveler
Reviewed in the United States on February 23, 2025
Simple and effective manometer. Does what it says it does
Veronica Brown
Reviewed in the United States on January 9, 2025
I have no way to test the accuracy of it, but it does show a reading. Quality is about what you would expect from something that costs hundreds of dollars less than a pro unit. I would probably buy something more heavy duty if I was doing this for a living, but it worked fine for a one off job. Came with everything I needed and the price was really good.
Djay
Reviewed in the United States on January 22, 2025
It works as it should . I adjusted my gas valve and after that the furnace worked.
Pwilly
Reviewed in the United States on January 2, 2025
It's actually a little smaller than I expected, which is a good thing. Very intuitive button function, except you have to sometimes hold a few seconds for some, which took a moment to figure out, such changing temp units, c to f. Also for shutting down. Nice blue back light with power button. Using for furnace pressure and the fitting included fit it perfectly! Hope it will last. I will make sure to remove batteries for storage as I might not use it that often.
Stone
Reviewed in the United States on January 19, 2025
It's small and can test in many settings. Great for static pressures and gas pressures. Can set multiple preset parameters. Only down side is it's not magnetic and the hoses it comes with are short in length.
nazareno
Reviewed in Spain on June 26, 2024
Buena y exacta
victor
Reviewed in the United Kingdom on June 2, 2024
I needed a back up and this product is perfect for testing, light and easy to use
ron mieldijk
Reviewed in the Netherlands on February 6, 2024
meet goede druk
JM
Reviewed in the United States on November 25, 2024
It is inexpensive, but it includes no instructions. I had to play around to figure out how to zero it and I'm not even sure if I'm doing it correctly. That is the problem with missing instructions. Unfortunately the return window had closed.
Engineer
Reviewed in the United States on April 22, 2024
I've got this manometer to measure static pressures in my HVAC system. It is small, but convenient to use. It can measure positive, negative and differential pressures. I have no way to calibrate it right now, so have to trust its readings. Today I have measured 0.43 in H2O total external static pressure in my house, which is pretty good. You can also measure pressure drops over individual system components to find a restriction.I had to buy a couple of probes for the measurements. They are typical bent tubes with small holes near the tip. The diameter of the barbs on the meter is 4.9 mm, very close to the barb size on the probes. The included silicone tubes measure 3 mm ID and 5 mm OD and fit both the meter and the probes just fine. The power comes from three 1.5V AAA cells. I have used rechargeable NiMH cells and they work just fine. For the future I can measure the pressure drop across the air filter to decide when it is the time to replace it. It is a useful tool in every household.04-27-24 update. Today I was able to calibrate (kind of) my gauge against a precision calibrated Heise gauge. I was not able to go below 6 in H2O, but from 6 to 83 in H2O both gauges showed very close numbers. It was not a proper calibration, but it showed that I can trust this gauge. It even generated an overpressure error, when I slightly exceeded 83 in H2O.
MarioM
Reviewed in Italy on December 13, 2023
Utilizzato per tarare il min/max del gas in uscita dalla valvola boiler, ha funzionato. Il tubicino in dotazione è piccolo e nel mio caso mi sono dovuto ingegnare con un piccolo giunto e spezzone di tubicino adatto alla presa sulla valvola gas. Soddisfatto dell'acquisto.
John C
Reviewed in the United States on April 2, 2022
I bought this because I have a 10+ year old wall-mounted natural gas heater (Empire DV-35 SG) that has very low heat output. On full heat it is supposed to have a flame this is ~ 3” tall, but all I could see was maybe 1/4” tall flame. It would cost well over $1500 to replace this unit, or probably at least $500 to have it fixed.To analyze the problem one needs to measure the natural gas pressure on the supply side of the valve, and on the downstream side (for good vid search “diagnostic testing for gas pressure and gas millivolt valves“) The heater uses a Dexen 6003 millivolt valve; this valve has small pressure taps built in to the body of the unit. The diagnostic process involves turning off the gas supply, opening the supply side pressure tap, hooking up a pressure meter to the tap, then turning the gas back on to measure pressure. Then repeating this exercise on the downstream side of the valve. Published data say the upstream side pressure should be in the range of 5 to 8 inches of water and the downstream side should be ~ 3” of water. I had the option of trying to purchase a “magnahelic” guage (high quality, but expensive), try to set up a classic U-shapped glass tube with water, or purchase an inexpensive digital pressure gage. Despite a couple of mediocre reviews for this digitial manometer I thought the purchase price ($49) was worth the risk. I am not able to calibrate this manometer, so I have to trust the readings out of the box. It gave me 5.77 inches of water on the supply side (OK reading) and 4.2” of water on the downstream side: significantly too high. I interpreted this to mean that the output tube was partially blocked and causing back-pressure, which would be consistent with the very low flame and low heat output that I saw. Upon disassembly of the output tube and orifice I found a spider had built a nest inside and almost (but not quite) totally blocked the flow of gas. I removed the tube/orifice, washed it out, and now my heater is back to working perfectly.In my opinion, spending $49 for this tool, to save a minimum of $500 and possibly more than double that, was exceedingly worthwhile. Perhaps if I were a professional HVAC person who needed a rugged, calibrated, reliable tool, this model would be too simple and maybe not robust enough. But for the homeowner / DIY person this is an excellent solution and a terrific deal.A key point to add: this unit has small diameter tubes, 3/16”, to connect to the device you want to measure. The output taps on the Dexen valve are larger, ~ 1/4” or 5/15”. I needed to separately purchase an adapter that connects the larger diameter tube to the small dia tube that comes with the manometer. Part # RMA316 at Supply House.
Rob Ball
Reviewed in Canada on October 4, 2021
Only needed a meter like this for a one time use , checked out a lot of different models this one checked all the boxes priced fair, easy to use, and accurate enough for the job worked great.
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