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The AR1890 Digital Pressure Gauge is a professional high precision, high range, high resolution digital pressure gauge for indoor temperature measurement with a large screen display. It can quickly measure the pre-blue detection pressure value and has a dual channel that can simultaneously detect the pressure difference between two detection ports.
This instrument can measure the air pressure of the single pipe or the pressure difference between two detection ports. It offers 12 units of measurement and advanced features like DATA HOLD, MIN-MAX- AVG mode, ZERO, DATA RECORD, and AUTO POWER OFF. It is widely used in natural gas pipelines, air-conditioning refrigeration, and ventilation systems, mechanical hydraulics, plastic molding, biopharmaceutical molding, mining area pressure detection, gas, liquid, and production industrial equipment pressure detection.
FEATURES
- 12 selectable units of Measurement
- Pressure difference measurement
- Maximum / minimum / average data mode • Data hold function
- Data storage function with a time stamp
- Zero function
- Low battery alarm
- Automatic power off function
- Over range indicator: Hi, Lo
- USB for power supply
Fit In Most Gas Valves
Silicone Pressure Hose Size and Pressure Port Size
Key Description
- Temperature Display
- Low Power Symbol
- Hold Function
- Max/Min Reading
- Differential Pressure Mode
- Reading display
- Pressure Units
Instruction To Structure
- P1 Tube Connector (+)
- P2 Tube Connector (-)
- LCD Display
- BACKLIGHT Button
- DIF Button
- UN T Button
- MODE Button
- HOLD Button
- Power on/off Button
- Hanging Hole
- Battery Cover
- USB Socket (for power supply only)
One Set Included
- Digital Manometer x1
- Pressure Hose x2
- Pagoda Connector x2
- Stainless Steel Tube x2
- Protective Case x1
- USB Cable x1
- Quick Manual x1
- ADDITIONAL INFORMATION (Tube Material and Dimension: OD 5mm, ID 3mm, silicone pressure hose)
Professional Digital Air Pressure Meter & Manometer to Measure Gauge & Differential Pressure ±20.68kPa / ±3psi / ±83.02inH2O
Technical Performance
- Large LCD with backlight
- 12 selectable scales & units: psi, kgcm2, ozin2, bar, mbar, Pa, kPa, inHg, mmHg, in H2O, FtH2O, cmH2O
- Accuracy: ±0.3% FSO (25°C)
- Repeatability: ±0.2% (MAX ±0.5% FSO)
- Linearity/Hysteresis: ±0.29% FSO
- Measurement rate: 0.5s
- Data Storage: 99 groups
- Low Battery Indication
- Maximum withstand pressure: 50 KPa
- Positive pressure range display: Err0
- Over negative pressure range display: Err1
- Working Temperature: 0-50°C (32 - 122°F)
- Physical Dimension: 165 x 70 x 33mm
- Weight: 150g
Range Of Pressure Measurement
GIGI Chow
2025-09-03 10:47:02
Half the price but still got the job done. Highly recommended!!This manometer is recommended by a mechanic I know. Half the price of other brands but yet works as good. Seller has got different shapes and types of probe to fit with this device. They are sold separately and you can choose according to the measuring environment.There are many scales and units to choose from, although I am using only some of them. When using both two tubes, it displays the pressure difference. This help me check my furnace, air-conditioner and gas appliances without spending $$ on service calls!It used to be sold stand alone with soft plastic tubings. Packages with stainless steel probes offered recently and making it an even better deal. Minimal packaging which is great for the earth. Fast shipping. Recommended for sure!
shopper
2025-08-27 10:15:13
Great budget tool to have around house to troubleshoot airflow. Used it extensively to map a pressure field under the basement floor for radon mitigation. Did some HVAC balancing when added additional air return vent and extra supply floor vent in a small bathroom.
Joshua spears
2025-08-26 18:05:16
Worked well for about 2 months, Now it has phantom readings that are not accurate.
W. Pantos
2025-07-22 17:38:38
The plastic hoses could be a little longer and the storage case a little bigger but it did the job. For the price it is worth it.
Jose A. Ortiz Jr.
2025-07-19 11:09:31
Easy to use, very accurate, just wish it came with longer tubes. I got a second as backup, paid for itself 1000 times over in duct corrections and changouts. Saves clients the headache of broken down units due to static related failures.
Edmond
2025-07-09 17:26:16
This is my second one. This model is good for my job as air-con mechanics. Value for money with high accuracy. The new tubes are making the manometer perfect.
cool
2025-07-03 20:33:16
Works fine but other tubing needs to be purchased what is provided is worthless
Joe C.
2025-05-13 10:58:43
It does the job, good price but hoses are to short
Anthony Case99
2025-03-22 16:05:32
all good
Richard Mellor
2025-02-09 11:09:02
really useful for quick checks on differential pressures.
Basil Hickey
2025-02-08 17:51:57
It did the trick with balancing my new HRV!
Hilly Ness
2025-02-03 17:36:16
This item might work well but there are no instructions that come with it.
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