What is the outer diameter of the threaded part, and will this sensor work with water?

Yes, it will work with water. I believe the outer diameter is 1/4" male NPT thread. That said, you can always use a bushing to adapt it to whatever you are screwing it into (e.g. make it work with a 3/8" NPT female fitting).

I want to use this for a lab experimental procedure: will I be able to retrieve the pressure data in real time?

That depends on what you mean by "real time." It outputs an analog voltage that is a linear slope ranging from 0.5 volts (or close to that) for 0 Psi up to 4.5 volts (or close to that) for the upper range of Psi per sensor (150 Psi for the one I purchased). I assume there is some minimal latency for the analog circuitry inside the sensor to convert mechanical energy to electrical energy, but on your end, as I'm doing, you'll need to use an ADC (analog to digital converter) to process the data digitally, which has its own set of latencies depending on processing speed, bit resolution, etc. For my purposes, it's close enough to real time since I'm using an arduino board with my main loop time of less than 20 milliseconds with several of these sensors, and other sensors.

How come my gauge is 20 psi off

Here is the speciafication for our item : Output: 0.5V–4.5V linear voltage output. 0 psi outputs 0.5V, 100 psi outputs 2.5V, 200 psi outputs 4.5V

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AUTEX 150 Psi Pressure Transducer/Sender/Sensor with Connector Harness 0-150 Psi Stainless Steel 1/8”-27 NPT Pressure Transducer Sensor Compatible with Oil, Fuel, Air, Water

AUTEX 150 Psi Pressure Transducer/Sender/Sensor with Connector Harness 0-150 Psi Stainless Steel 1/8”-27 NPT Pressure Transducer Sensor Compatible with Oil, Fuel, Air, Water

Product ID: 20541785

Details

Brand
AUTEX
Material
Stainless
Maximum Supply Voltage
5 Volts (DC)
Measurement Accuracy
±1.5 psi
Style
Modern

📈0.5V–4.5V Linear Voltage Output

⏱️1ms Ultra-Fast Response Time

⚙️316L Stainless Steel Durability

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Description

⚡ Power Your Precision with AUTEX – Pressure Perfected!

PLUG PLAY CONVENIENCE - Includes connector harness and standard 1/8”-27 NPT fitting for quick, hassle-free installation.
PRECISION YOU CAN TRUST - Delivers highly accurate pressure readings with ±1.5 psi tolerance, ensuring your systems run flawlessly.
VERSATILE COMPATIBILITY - Seamlessly measures pressure in oil, fuel, air, and water, making it your all-in-one sensor solution.
INDUSTRIAL GRADE DURABILITY - Crafted from premium 316L stainless steel for unmatched corrosion resistance and longevity in harsh environments.
RAPID RESPONSE REAL TIME CONTROL - 1 millisecond response time means you never miss a critical pressure change—perfect for dynamic industrial applications.

The AUTEX 150 Psi Pressure Transducer is a robust, industrial-grade sensor built with 316L stainless steel, offering precise pressure measurement from 0 to 150 psi. Featuring a fast 1ms response time and a linear 0.5V–4.5V output, it’s engineered for reliable monitoring of oil, fuel, air, and water pressures. Designed for easy panel mounting with a connector harness, it ensures seamless integration into demanding environments up to 125°C.

Specifications

ASIN	B00NIK98O8
Best Sellers Rank	#36,060 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #7 in Pressure Probes & Sensors
Brand	AUTEX
Brand Name	AUTEX
Customer Reviews	4.3 out of 5 stars 263 Reviews
Manufacturer	AUTEX
Material	Stainless Steel
Material Type	Stainless Steel
Maximum Supply Voltage	5 Volts (DC)
Measurement Accuracy	±1.5 psi
Model	GSND-0556629788
Mounting Type	Panel Mount
Output Type	electrical signal
Part Number	GSND-0556629788
Response Time	1 Milliseconds
Smart Home Compatibility	Not Smart Home Compatible
Specific Uses For Product	Industrial
Style	Modern
Style Name	Modern
UPC	702373916802
Unit Count	1.0 Count
Upper Temperature Rating	125 Degrees Celsius

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S$56

Duties & taxes included

In stock

Sold byAmazon SINGAPOREDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to SINGAPORE.

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