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High Accuracy oil filled Wet/Dry and Wet/Wet Differential Pressure Transducers

±0.05% Accuracy, 0 to 1,000 psi Wet/Wet Differential, 4 to 20 mA, 1/4" NPT Male, Cable


Item# PX409C-1.0KDDUI-EH

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-9 $1,250.91
10-24 $1,188.36
25-49 $1,163.35
50-99 $1,113.31
100+ $1,088.29

In stock

Lead Time (If not in stock): 5 Days
±0.05% Accuracy, 0 to 1,000 psi Wet/Wet Differential, 4 to 20 mA, 1/4" NPT Male, Cable PX409C-1.0KDDUI-EH PX409C-1.0KDDUI-EH
  • 5-Point NIST Traceable Calibration
  • Precision Micro-Machined Silicon Core

PX409C-1.0KDDUI-EH Model Options

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Pressure Range
Accuracy Value(compensated range)
Output Signal
Electrical Output
Pressure Port Type
Operating Temperature Range
Additional Features
Pressure Type
Accuracy Class
Pressure Port Size


Get all the great performance characteristics of the Micro-Machined Silicon Transducers in these wet/wet differential pressure models. These rugged stainless steel transducers are ideal for tough industrial automotive, or aerospace applications. They can be used in test benches, fitler monitoring, hydraulic, flow, or water/wastewater applications, as well as factory or pneumatic air, pitot tubes, air speed and other industrial or aerospace applications. The solid state silicon core and avaliable all stainless steel wetted parts will provide long, reliable service life with excellent long term stability.
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Rated 5 out of 5 by from Just the Best Since these USB-enabled transducers are performing perfectly in a unit operations lab at the University of Kansas, they are now installed in a new undergrad fluid mechanics lab experiment at the University of Delaware
Date published: 2020-04-30
Rated 5 out of 5 by from Excellent Transducer! I needed a high accuracy transducer for experiments in my lab, and this one is surely getting the job done well. It's easy to set up and is working just as expected. It was also a lot cheaper than similar transducers I found on other sites. All around a good deal.
Date published: 2019-03-18
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What is the wire pinout on the 409 series?

Asked by: Systems
This is a 3-wire voltage output device. The Red wire would connect to the positive side of the power supply. The Black wire is the common connect. It needs to be connected to both the negative side of the power supply and the negative side of the readout device. The White is the positive side of the output signal. It needs to be connected the the positive side of the readout device. If there is also a Green present in the cable you would ignore it. It is not used in this sensor. Power requirements for this sensor are between 15 and 30VDC.
Answered by: Applications Engineer JK
Date published: 2023-04-17

At one side of the transducer, we are going to have an aqueous solution with fine solid particles. Is there any consideration for this condition? Are "oil filled" transducers proper for this fluid? If no, please introduce a porper type.

Asked by: Mahdi
It depends on what you define as "fine" particles. The fitting has a small port that leads to a chamber where the diaphragm is located. The particles could possibly clog the port. This would not damage the unit but it would cause it to read incorrectly. If at all possible you should filter the solution to make it as clean as you can. The ideal solution would be a sensor with a flush diaphragm (no cavity). We do not offer a differential sensor with this feature
Answered by: Applications Engineer JK
Date published: 2022-07-15

If 500 psi is the maximum line/static pressure that can be applied to both sides of the sensor simultaneously, how can these PX409s go up to a measurement range of 1000 psid?

Asked by: ChrisB
On the 1000 PSID range units. A static pressure 500 psi above the rated differential pressure range (1500 PSI) can be applied simultaneously to both ports.
Answered by: Applications Engineer JK
Date published: 2021-02-04

Can a wet/wet differential pressure transducer be used to measure differential vacuum pressures? (i.e. absolute pressures at both process connections which are less than the ambient pressure surrounding the transducer body)?

Asked by: SeanS
Thank you for your inquiry. Most differential transducers will not handle this application unless you purchase a unidirectional product? Please contact us to discuss in detail. Hope this was helpful
Answered by: application engineer je
Date published: 2022-01-21

Can this also be used for sensing air pressure?

Asked by: ScoutK
Thank you for your inquiry. Our Tech Support engineer has emailed you the specifications for our PX409-10WDWUI, Differential pressure transmitter. Unfortunately, we do not offer any differential sensors with sanitary connections. This sensor has 1/4 NPT male thread connections and all stainless steel wetted parts. You might be able adapt the fitting to some sort of quick disconnect setup. Smallest range we offer is a 0 to10"wc.
Answered by: Jane
Date published: 2022-04-14
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