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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150 Psi Pressure Transducer/Sender/Sensor 150/200 Psi Stainless Steel 1/8”-27 NPT Pressure Transducer Sensor Compatible With Oil, Fuel, Air, Water

Product ID: 284719184

Details

Brand
AUTEX
Material
Stainless
Maximum supply voltage
5 Volts (DC)
Measurement accuracy
±1.5 psi
Style
industrial

🔋5V DC power efficiency

⏱️1ms ultra-fast response time

⚙️316L stainless steel durability

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COP 398754

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Description

⚡ Elevate your pressure sensing game with precision and speed!

SEAMLESS INTEGRATION - Standard 1/8”-27 NPT thread and water-sealed quick disconnect for effortless setup.
SPEED MEETS STABILITY - 1 millisecond response time with long-term stability of ±0.2% FS/year keeps you ahead.
BUILT TO BRAVE EXTREMES - Operates flawlessly from -40°C to 125°C for all your toughest environments.
VERSATILE COMPATIBILITY - Engineered for oil, fuel, air, and water — the ultimate multi-medium sensor.
PRECISION THAT POWERS PROGRESS - ±1.5 psi accuracy ensures your readings never miss the mark.

The AUTEX 150 Psi Pressure Transducer is a high-performance sensor crafted from premium 316L stainless steel, delivering ±1.5 psi accuracy and a lightning-fast 1ms response time. Designed for demanding applications involving oil, fuel, air, and water, it operates reliably across a wide temperature range (-40°C to 125°C) and features a robust 1/8”-27 NPT thread with water-sealed quick disconnect wiring. Perfect for professionals seeking durable, precise, and versatile pressure measurement solutions.

Specifications

ASIN	B00NIK98O8
Brand	AUTEX
Brand Name	AUTEX
Customer Reviews	4.3 out of 5 stars 254 Reviews
Manufacturer	AUTEX
Material	Stainless Steel
Material Type	Stainless Steel
Maximum Supply Voltage	5 Volts (DC)
Maximum supply voltage	5 Volts (DC)
Measurement Accuracy	±1.5 psi
Measurement accuracy	±1.5 psi
Model	GSND-0556629788
Mounting Type	Flange Mount
Mounting type	Flange Mount
Output Type	electrical signal
Part Number	GSND-0556629788
Response Time	1 Milliseconds
Specific Uses For Product	automotive, oil and gas, industrial
Style	industrial
Style Name	industrial
UPC	702373916802
Upper Temperature Rating	125 Degrees Celsius

Reviews

H**N

16.06.2025

D**M

29.09.2024

J**E

30.10.2025

J**K

6.03.2026

N**U

17.04.2025

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COP 398754

Duties & taxes included

In stock

Sold byAmazon ColombiaDelivered 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 Colombia.

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