Questions tagged [pressure]
The pressure tag has no usage guidance.
99
questions
0
votes
1
answer
49
views
reusing pressure sensor from blood pressure monitor - where is the output
I need a cheap vacuum regulator, so I decided to try to reuse a blood pressure monitor that I have laying around unused. The sensor itself is a simple bridge type and the signal is amplified by an IC ...
- 59
0
votes
1
answer
37
views
How to feed pressure sensor MPX2050 correctly with input voltage?
How to power pressure sensor MPX2050 correctly with input voltage?
I want to use the pressure sensor MPX2050 (data sheet: https://docs.rs-online.com/65ac/0900766b814a74eb.pdf)
These are some values ...
- 3
2
votes
0
answers
26
views
Fluid pressure sensor choice
I need to measure change in pressures in the range of 400-600 Pa. The sensors easily available are in the MPa range, for example 1.2 MPa. I was hoping to acquire a sensor in the upper limit of 1 kPa, ...
- 33
0
votes
1
answer
47
views
Help testing Pressure Sensors
I have a few ME600 Metallux sensors that I harvested from some discarded products. I want to build a project with these but would like to verify they work before getting too far. From the datasheet ...
- 1
0
votes
2
answers
71
views
Pressure sensor output not clear from datasheet
Planning to use the following sensor:
https://shop.bb-sensors.com/Druck/Drucksensoren/
Part number SHOP 0391 0004-02M.
I am planning to give 3.3 VDC to sensor. Pressure input will be 0 to 10 bar. It ...
- 65
0
votes
2
answers
126
views
How to calculate SPL change from a sound source to a listening position?
I need to know how to calculate SPL change from a sound source to a listening position. I already know the distance between the speaker and the listening position and also the SPL at the speaker.
- 145
0
votes
2
answers
74
views
First-order filter between sensor and amplifier
I need to sample an analog pressure sensor (TSCDRRN015PDUCV) with very high accuracy. The pressure sensor is currently connected to an instrumentation amplifier (AD623) and then sampled by my MCU's ...
- 115
2
votes
3
answers
299
views
Quad op amp problems
I am using a pressure sensor with my Arduino Uno. Below is the amplification circuit for the sensor.
The recommended reference voltage is 1V DC, but I had been using the 3.3 V of Arduino as reference ...
- 492
1
vote
6
answers
362
views
Pressure activated switch for a light up LED straw? Similar to how a vape pen activates with air pressure drop when sucking?
I’m looking for a component that I can integrate into an LED straw so that when the user starts sucking on it the light turns on. What should I be looking at? I disassembled a Juul pod and see that ...
- 19
1
vote
1
answer
69
views
Asking experience for this flow-through pressure sensor: 26PCAFG6G - Honeywell
I have the following sensor:26PCAFG6G
The output of the signal is a differential output from a Wheatstone bridge with 0 - 1 psi, or 0 - 70.3 cmH20 corresponding to 0 - 16.7 mV, I am using AD623AN for ...
-1
votes
1
answer
198
views
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 ...
1
vote
1
answer
77
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, ...
- 19
-1
votes
1
answer
78
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 ...
1
vote
0
answers
33
views
Upstream pressure on solenoid valve
Does a solenoid valve consume more current when the pressure in the connected pipes is more than normal?
- 33
3
votes
2
answers
795
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 ...
- 51
1
vote
3
answers
150
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 ...
- 11
0
votes
1
answer
80
views
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 ...
0
votes
2
answers
133
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 ...
- 1,236
-2
votes
2
answers
58
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 ...
40
votes
10
answers
5k
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 ...
- 509
1
vote
1
answer
928
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 ...
1
vote
2
answers
648
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 ...
0
votes
0
answers
109
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 ...
- 15
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 ...
2
votes
0
answers
627
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
...
- 21
7
votes
6
answers
4k
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....
- 105
0
votes
0
answers
41
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 ...
- 133
2
votes
1
answer
1k
views
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 ...
- 294
0
votes
1
answer
178
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 ...
0
votes
0
answers
53
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 ...
0
votes
0
answers
189
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 ...
- 11
3
votes
2
answers
124
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 ...
- 33
0
votes
1
answer
261
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, ...
- 647
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 ...
0
votes
1
answer
35
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 ...
- 1
1
vote
1
answer
105
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 ...
0
votes
1
answer
296
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 ...
0
votes
0
answers
50
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....
- 715
1
vote
1
answer
814
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 ...
- 31
0
votes
2
answers
151
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 ...
- 3,391
0
votes
1
answer
331
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 ...
- 65
0
votes
1
answer
74
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 ...
- 65
0
votes
1
answer
224
views
How to increase pressure sensor breadboard sensitivity?
I build a pressure sensor breadboard according to 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 ...
1
vote
0
answers
264
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 ...
- 65
0
votes
1
answer
135
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 ...
- 11
0
votes
1
answer
179
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.
...
- 127
0
votes
2
answers
71
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 ...
- 101
2
votes
2
answers
251
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 ...
- 1,177
0
votes
1
answer
100
views
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 ...
- 53
0
votes
2
answers
90
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://...
- 149