Questions tagged [pressure]

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Converting pressure to voltage [closed]

I am using an ifm PN2028 sensor and my sensor gives me an reading in mbar. Measuring range of the sensor is -12.5 to 250 mbar. The output of the sensor is analogue signal (4...20mA or 0..10V). The ...
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1 vote
1 answer
55 views

Pressure Transducer, Reverse and Shift Output of a differential amplifier

I am making a custom hydraulic brake for my sim racing setup. The original brake uses a potentiometer which outputs 3.3V at no brake pressure and 0V at full brake pressure. My pressure transducer, ...
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1 answer
29 views

Connect analog sensor to PLC Omron CP1E-E30SDRA

I have a Wisner pressure sensor 0-10 bar with output 4-20 mA. I want to connect it with PLC Omron CP1E-E30SDRA which this PLC doesn’t have any analog input pin. I want to use this sensor to maintain ...
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1 vote
0 answers
28 views

Upstream pressure on solenoid valve

Does a solenoid valve consume more current when the pressure in the connected pipes is more than normal?
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0 answers
23 views

Omron PP02 sensor signal issues

I am using omron PP02 pressure sensor for my sphygmomanometer project. The data sheet is here DataSheet Link, and the user manual is here UserManual Link. I "believe" I have correctly wired ...
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3 votes
2 answers
525 views

LM358 Differential Two Stage Amplifier Misbehaving (unanticipated output voltages)

Hello all and thank you in advance for taking a look at my problem. I have made a circuit which takes a differential voltage from a Wheatstone bridge (pressure transducer) and converts to an analog ...
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1 vote
3 answers
60 views

Powering a pressure transducer

I am new to building testing setups. I have an Omega PX603-30VAC5V pressure transducer that I need to power. I have a Rhino Power Supply PSP24-060C that is listed as 24VDC/2.5, the pressure ...
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1 answer
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Arduino not picking up analog reading 20 meter away from my pressure sensor

I’m new here. I just hooked up my 3-pin (5V, GND, Analog Out) XGZP6847020KPG pressure sensor right on my Arduino pro mini (at first it was not working, then I added a 10 kOhm resistor in parallel with ...
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0 votes
2 answers
54 views

Interpreting HP ratings of a pressure switch label?

I'm trying to interpret the voltage/HP table given on the badge of an air compressor pressure switch. Here's the badge: What is confusing is what this table is actually supposed to be telling me. The ...
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-2 votes
2 answers
53 views

Missing and insufficient data read from embedded BMP180 pressure sensor in motion [closed]

We're building an avionic system which will fly onboard on our rocket. And we have embedded BMP180 Pressure Sensor on our avionic system and we want to get smooth data when it is moving. Our BMP180 ...
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40 votes
10 answers
4k views

How can human finger pressure be measured?

I am dealing with a situation where a patient can only very lightly press his fingers / hand to signal what he / she wants. Speaking or eye tracking is not possible. The person is also not able to ...
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1 vote
1 answer
399 views

Transfer Function of a pressure sensor - what does it tell me?

so I'm trying to get a pressure sensor for a water pump and in the Datasheets they state different transfer functions within the series. I know that the transfer function describes the input and ...
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1 vote
2 answers
250 views

Using Unidirectional Electret Microphone as Static Pressure Sensor

Hi all posted question on reddit but giving it a shot here too, I've been working on a board that requires a pressure sensor to detect when there is a differential air pressure or not. The board needs ...
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0 answers
51 views

Interfacing a piezoelectric pressure sensor with a microcontroller

I'm working on monitoring injection molding process pressure inside the mold. The pressure range is expected to be between 1500 - 3000 bar. The mold temperature is expected to be around 100C while the ...
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1 vote
0 answers
36 views

How to calculate the pressure and velocity of an ionised gas that is being impelled with magnetic pressure

Calculating the velocity and pressure of an ionised gas based on magnetic pressure and magnetic force. Questions: Based on magnetic pressure expressed on an ionised gas, how do I calculate the ...
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1 vote
0 answers
326 views

Sound level meter using a microphone with ADC

I'm working with STM32F4, MAX4466 amplifier and a condenser microphone. In other words, Adafruit 1063. I want to get the sound level in dB unit. I know: Microphone sensitivity: 0.0063096 V/Pa ...
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6 votes
4 answers
2k views

What kind of a sensor does a arcade punch (boxing) machine have?

I am working on a project, where I have to measure the pressure exerted by a punch. I am trying to understand how an arcade machine works, and see if I could replicate the same mechanism in my project....
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0 answers
39 views

Durability of SMD MEMS pressure sensors in pure oxygen enviroment

I have a question regarding durability/reliability of COTS SMD mems pressure sensors in oxygen rich (basically 100%) atmosphere under pressure of 1bar/1atm and temperature around 20C/293K. Sensor ...
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1 answer
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Where does this decibel equation come from, why a factor of 20?

For sound levels, it is said that decibels follow this equation: $$ dB = 20 \log(\frac{p_s}{p_0}) $$ Where \$p_s\$ is the pressure of the measured sound wave (in Pascals) and \$p_0\$ is some fixed ...
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0 votes
1 answer
97 views

What is the best way to sense if a climbing hold is being used by a climber?

I am designing a climbing wall game that gets what holds are being used as inputs. I'm currently planning on using a Kinect sensor to tell where hands are relative to holds and capacitive touch ...
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0 answers
28 views

MPX2200DP signal value reversed when amplified with AD620

I am trying to measure differential pressure with MPX2200DP. According to the datasheet, the signal is linear and its value ranges from 0 to 40 mV. To be able to use the sensor properly, AD620 ...
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0 votes
0 answers
67 views

Pressure to current conversion

I was trying to convert the pressure values (in psi) into 4-20mA current. The range of pressure values I have chosen is between 0-10Psi. But according to the link given below the pressure from 3-15Psi ...
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3 votes
2 answers
112 views

How to detect when the lid of a box is loosened (as soon as the screws are unscrewed)?

I have an aluminium box (dimension about 10 × 10 × 10 cm) with a lid closed with 4 screws (such as this: https://www.hammfg.com/electronics/small-case/diecast/1590). I would like to put a simple ...
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0 votes
1 answer
104 views

Sensors - How to convert 4-20mA output to temperature and pressure values?

I'm dealing for the first time with two sensors, of pressure and temperature. Both have output of 4-20mA, then I'm using a 47 ohms 1% to convert to voltage. When flows 20mA, 20mA * 47 ohms = 940mV, ...
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1 vote
2 answers
49 views

Help identifying pneumatically activated switch with possible BMS

Some decent googling has yielded me no results. Attached are pictures of a component that allows power from a 3-5v power supply to flow when positive pressure is applied to one side or negative ...
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0 votes
1 answer
31 views

Hydraulic pressure sensor for biological sample

I need to filtrate blood sample (About 2 ml). I have a tube (roughly 0,5 inches of internal diameter) attached to the filter cassette inlet. The cassette is plugged to vacuum pump. I would like to ...
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1 vote
1 answer
104 views

Why shows the effect shown in the video below left-right asymmetry?

I made this video which shows what happens when I move the point of a wooden chopstick over my TFT-LCD screen, with firm pressure. It's remarkable that one can see that there is a difference between ...
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0 votes
1 answer
136 views

Sensor Connection: DIN 43650 vs M12

Preface, I'm a plant engineer and my background is mechanical engineering. My current project requires me to find some pressure sensors for my compressed air lines and this is a pretty new territory ...
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0 votes
0 answers
36 views

How do you model acoustic waves underwater that are generated by an Nd:YAG laser?

In this paper on page 84 they show the following experimental setup: The array of receiver hydrophones are set up to record sound pressure waves sent by the transmitter hydrophones. In Figure 6....
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1 vote
1 answer
441 views

How to read the following datasheet of a sensor?

I wanted to write about static and dynamic characteristics of the Honeywell pressure 19mm transducer. I found my sensors datasheet but could not find the following characteristics mentioned in the ...
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0 votes
2 answers
146 views

Pressure sensor without using MEMS chips [closed]

I'd like to figure out how to make a pressure sensor for very low cost (essentially disposable), mass produced piece of medical equipment. The problem: this can't use any parts which aren't already ...
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0 votes
1 answer
205 views

Need help interfacing an ADC with a pressure transducer

I am trying to connect a pressure transducer which gives a 4- 20mA current output to an ADC which I believe can only take voltage inputs. How will I be able to read a current output from the ADC? Do I ...
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0 votes
1 answer
47 views

Need advice choosing wiring configuration for combination pressure and temperature sensor

I am currently trying to purchase a combination temperature and pressure transmitter for a project, and it has an option to choose between a 3 wire or a 4 wire configuration. I have attached the link ...
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0 votes
1 answer
140 views

How increase pressure sensor breadboard sensitivity?

I build a pressure sensor breadboard according the schematic. It works, but has quite low sensitivity - it shows some pressure only after big pressure is applied. Is there a way to increase ...
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1 vote
0 answers
213 views

What type of sensor connection would be the most suitable?

I have a pressure transducer with a 6 pin bayonet MIL-C-26482 male connector. I need to wire this connector with a 9 pin female D sub analog input connector and I am not sure how to do so. Schematic ...
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0 votes
1 answer
89 views

Manufacturable technology for force-sensitive button

I'm hoping to hear your perspectives on which force-sensing technologies would be most reliably and inexpensively manufactured at volume. The application is a pressure-sensitive button, as are found ...
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0 votes
1 answer
101 views

Voltage or Current Control with a Microcontroller for Pressure Regulator

I am wanting to control the flow rate of a pressure regulator (https://www.festo.com/net/SupportPortal/Files/505126/VEAB_2018-05a_8080669g1.pdf). My idea is to control this with a PWM signal 0-5v. ...
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0 votes
2 answers
66 views

Mechanical pressure contact

What I'm looking for is to be able to solder a mechanical pressure plate/arm to a PCB, where a plastic tab can be inserted. This contact (when connected) will complete the 3.3V/5V supply and turn on ...
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2 votes
2 answers
179 views

Questions about capacitive sensing

I'm trying to use the FDC1004 capacitance-to-digital and I have a few questions: Why do we (our fingers or another part of our body) act as the other conductive plate - don't we have a very large ...
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0 votes
1 answer
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mpx5010 drifting

I have a MPX5010 pressure sensor that outputs a voltage proportional to applied pressure. Output is connected to an amp-op with gain=4 so my output is around 1V when no pressure is applied. That ...
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0 votes
2 answers
86 views

What type of pressure or weight sensors are thin? (Arduino or R-Pi) [closed]

I want to know if a person is in a walking path of approx. 10x1,5 meters. I thought on putting thin tables in the path and putting these sensors under each even table (to save some money): https://...
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1 answer
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Understanding the MPX2053 Pressure sensor

So I am a bit confused as to how I would operate a pressure sensor whose pressure range is between 0-50 kPa because the moment I remove it from the packaging and expose it to the environment, it will ...
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-3 votes
1 answer
96 views

Detecting a feather touch [closed]

New to the forum here, but I have a need to detect a feather touch. Is there any sensor that is recommended? This will be in a vibrating environment, so audio is probably out of the question. Is a ...
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2 votes
2 answers
111 views

LED light bulbs in low atmospheric pressure

I have these (https://www.amazon.co.uk/gp/product/B01DBOKZVK/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1) LED lightbulbs. Can I use them in a pressure of ~30kPa (21" Hg vacuum)?
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0 votes
1 answer
268 views

Problem with Vout of Honeywell ASDX Analog pressure sensor

Few months ago I decide to bought an absolute pressure measure system using a Honeywell ASDX differential analog pressure sensor (Model: ASDX ACX 030PAAA5). The datasheet of this type of sensor ...
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0 votes
1 answer
202 views

Non-inverting op amps with sensors [closed]

I would like to know if there's a negative implication of using non-inverting op amps with sensors, for example a pressure sensor? Would it be a better option to use an inverter, and if it is, why?
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0 votes
1 answer
345 views

Pressure transducer being read using Labview

I understand this is not a typical question for this forum, and that NI Labview forum would be better (I posted there too), but I am hoping that someone who is proficient in Labview will see this. I ...
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0 votes
2 answers
39 views

Question about pressurization and introducing air into a small chamber

This is probably very easy to answer, but I'm working on a project where I need to heat a chamber (insulated Styrofoam container), and my option to heat it is essentially a hair dryer, as a heat gun ...
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0 votes
2 answers
89 views

Suggestions on conductive materials for textile capacitive pressure sensors

I am doing preliminary research for my thesis. The thesis involves textile capacitive pressure sensors. I am trying to find out more about how the type of conductive material used affects the ...
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0 votes
1 answer
368 views

How to measure internal battery pressure?

Which unit is used to measure internal battery pressure? And how can it be measured? (Does it change with battery age somehow?) The internal battery pressure increases at high charging capacities and ...
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