Products for USB Sensing and Control

Products for USB Sensing and Control


Unit 1 - 6115 4 St SE
Calgary AB  T2H 2H9
+1 403 282-7335

Absolute Air Pressure Sensor 15-115 kPa

ID: 1141_0

This absolute air pressure sensor plugs into an Analog Input or VINT Hub port and measures pressure from 15 kPa to 115 kPa.


Quantity Available: 176

Qty Price
5 $30.40
10 $28.80
25 $25.60
50 $22.40
100 $20.80

The 1141 Absolute Pressure Sensor is an air pressure sensor that measures the absolute pressure of its environment. It can measure pressures from 15 kPa to 115 kPa.

Comes Packaged with


warning This sensor is designed to measure the pressure of clean, non-condensing air. Contact with moist air (i.e, human breath), dusty air, or other gases can damage the sensor.

Product Specifications

Sensor Properties
Controlled By VoltageRatio Input
Sensor Type Gas Pressure (Absolute)
Sensor Output Type Ratiometric
Pressure Min 15 kPa
Pressure Max 115 kPa
Case Pressure Max 400 kPa
Pressure Resolution 111 Pa
Measurement Error Max ± 1.5 %
Warm-up Time 20 ms
Response Time Max 1 ms
Electrical Properties
Supply Voltage Min 4.8 V DC
Supply Voltage Max 5.3 V DC
Current Consumption Max 10 mA
Output Impedance 1 kΩ
Output Voltage Min 200 mV DC
Output Voltage Max 4.8 V DC
Physical Properties
Operating Temperature Min -40 °C
Operating Temperature Max 125 °C
Recommended Tubing Size 332



Product History

Date Board Revision Device Version Comment
Oct 2012 0 N/A Product Release

Getting Started

Welcome to the 1141 user guide! In order to get started, make sure you have the following hardware on hand:

Next, you will need to connect the pieces:

1140 0 Connecting The Hardware.jpg
  1. Connect the 1141 to the 1018 with the Phidget cable.
  2. Connect the 1018 to your computer with the USB cable.

Now that you have everything together, let's start using the 1141!

Using the 1141

Phidget Control Panel

In order to demonstrate the functionality of the 1141, we will connect it to the 1018, and then run an example using the Phidget Control Panel on a Windows machine.

The Phidget Control Panel is available for use on both macOS and Windows machines. If you would like to follow along, first take a look at the getting started guide for your operating system:

Linux users can follow the getting started with Linux guide and continue reading here for more information about the 1141.

First Look

After plugging in the 1141 into the 1018, and the 1018 into your computer, open the Phidget Control Panel. You will see something like this:

1018 Panel.jpg

The Phidget Control Panel will list all connected Phidgets and associated objects, as well as the following information:

  • Serial number: allows you to differentiate between similar Phidgets.
  • Channel: allows you to differentiate between similar objects on a Phidget.
  • Version number: corresponds to the firmware version your Phidget is running. If your Phidget is listed in red, your firmware is out of date. Update the firmware by double-clicking the entry.

The Phidget Control Panel can also be used to test your device. Double-clicking on an object will open an example.

Voltage Ratio Input

Double-click on a Voltage Ratio Input object in order to run the example:

1018 Sensors VoltageRatioInput.png

General information about the selected object will be displayed at the top of the window. You can also experiment with the following functionality:

  • Modify the change trigger and/or data interval value by dragging the sliders. For more information on these settings, see the data interval/change trigger page.
  • Select the 1141 from the Sensor Type drop-down menu. The example will now convert the voltage into pressure (kPa) automatically. Converting the voltage to pressure (kPa) is not specific to this example, it is handled by the Phidget libraries, with functions you have access to when you begin developing!

Technical Details


The Absolute Gas Pressure Sensor provides an accurate, high level analog input signal that is proportional to the environment’s pressure. The minimum pressure measurement for this sensor is 15 kPa. Any value lower than 15 kPa cannot be accurately distinguished.


The sensor port has a diameter of 2.79mm to 3.30 mm (nominal 3mm).

For hosing, we recommend using polyurethane tubing. We have had good results with 2.4mm ID tubing from EMI. In imperial measurement, 3/32” ID tubing is equivalent. This is available through laboratory supply stores such as Cole Parmer.


The Phidget libraries automatically convert voltage to pressure (kPa). See the Phidget22 API for more details. The Formula to translate voltage into Pressure is:

Barometric Temperature Correction

This sensor reports the absolute pressure of its surroundings. In other words, the pressure compared to a perfect vacuum. If you plan on using this sensor as a barometer, you need to convert to barometric pressure. You can use conversion calculators such as this above sea level barometer reading correction calculator to make the adjustment based on your location's elevation.

Phidget Cable


The Phidget Cable is a 3-pin, 0.100 inch pitch locking connector. Pictured here is a plug with the connections labelled. The connectors are commonly available - refer to the Analog Input Primer for manufacturer part numbers.

What to do Next

  • Software Overview - Find your preferred programming language here to learn how to write your own code with Phidgets!
  • General Phidget Programming - Read this general guide to the various aspects of programming with Phidgets. Learn how to log data into a spreadsheet, use Phidgets over the network, and much more.
  • Phidget22 API - The API is a universal library of all functions and definitions for programming with Phidgets. Just select your language and device and it'll give you a complete list of all properties, methods, events, and enumerations that are at your disposal.

Interface Boards and Hubs

This sensor can be read by any Phidget with an Analog Input or VINT Hub port. It will connect to either one using the included Phidget cable. VINT Hub ports can behave just like Analog Inputs, but have the added flexibility of being able to be used as digital inputs, digital outputs, or ports to communicate with VINT devices. For more information about VINT, see the VINT Primer.

Product Voltage Inputs
Image Part Number Price Number of Voltage Inputs Voltage Input Resolution
1010_0 $80.00 8 10 bit
1011_0 $50.00 2 10 bit
1018_2 $80.00 8 10 bit
1019_1 $115.00 8 10 bit
1203_2 $125.00 8 10 bit
DAQ1000_0 $20.00 8 12 bit
HUB0000_0 $30.00 6 (Shared) * 16 bit
SBC3003_0 $120.00 6 (Shared) * 16 bit

Phidget Cables

This sensor comes with its own Phidget cable to connect it to an InterfaceKit or Hub, but if you need extras we have a full list down below. You can solder multiple cables together in order to make even longer Phidget cables, but you should be aware of the effects of having long wires in your system.

Product Physical Properties
Image Part Number Price Cable Length
3002_0 $2.00 600 mm
3003_0 $1.50 100 mm
3004_0 $3.00 3.5 m
3034_0 $1.50 150 mm
3038_0 $2.25 1.2 m
3039_0 $2.75 1.8 m

Here's a list of our gas pressure sensors:

Product Sensor Properties
Image Part Number Price Sensor Type Pressure Min Pressure Max Pressure Differential Min Pressure Differential Max Pressure Resolution
1126_1 $32.00 Gas Pressure (Differential) -25 kPa 25 kPa 55 Pa
1136_0 $32.00 Gas Pressure (Differential) -2 kPa 2 kPa 5 Pa
1137_0 $32.00 Gas Pressure (Differential) -7 kPa 7 kPa 17 Pa
1138_0 $32.00 Gas Pressure (Differential) 0 Pa 50 kPa 56 Pa
1140_0 $32.00 Gas Pressure (Absolute) 20 kPa 400 kPa 413 Pa
1141_0 $32.00 Gas Pressure (Absolute) 15 kPa 115 kPa 111 Pa
PRE1000_0 $15.00 Gas Pressure (Absolute) 50 kPa 110 kPa 250 mPa