Product Specifications

Documents

• Programming Resources
• Mechanical Drawings
• Download 3D Step File

Projects

• How To Calibrate Phidgets Sensors For Dummies (May 20, 2014)

Product History

Getting Started

Welcome to the 1136 user guide! In order to get started, make sure you have the following hardware on hand:

• 1136 - Differential Air Pressure Sensor ±2 kPa
• Any Phidget with a Voltage Ratio Input port, here are some compatible products. We will be using the 1018 for this guide.
• USB cable and computer
• Phidget cable

Next, you will need to connect the pieces:

1. Connect the 1136 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 1136!

Using the 1136

Phidget Control Panel

In order to demonstrate the functionality of the 1136, 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:

• Getting started with Windows
• Getting started with macOS

Linux users can follow the getting started with Linux guide and continue reading here for more information about the 1136.

First Look

After plugging in the 1136 into the 1018, and the 1018 into your computer, open the Phidget Control Panel. You will see something like this:

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 If your Phidget is listed in red, your firmware is out of date.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:

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 1136 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

General

The 1136 Sensor uses bipolar processing to provide an accurate, high level analog input signal that is proportional to the applied pressure. When the sensor is plugged in, the sensor voltage should default to about 2.5V, which corresponds to 0 kPa between the two ports.

Ports

The sensor comes with a positive top port and a negative bottom port. These ports have 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.

Formulas

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

${\displaystyle {\text{Pressure (kPa)}}={\text{Voltage}}-2.5}$

${\displaystyle {\text{Pressure (psi)}}={\frac {\text{Voltage}}{6.897}}-0.3625}$

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