User Guide

ManualsBrandsPhidgets ManualsGas SensorsDifferential Gas Pressure Sensor ±50 kPa

1138UserGuide

FromPhidgetsSupport

Contents

1GettingStarted

1.1CheckingtheContents

1.2ConnectingthePieces

1.3TestingUsingWindows

2000/XP/Vista/7

1.4RunningPhidgets

SampleProgram

1.4.1UpdatingDevice

Firmware

1.5TestingUsingMacOS

1.6UsingLinux

1.7UsingWindowsMobile/

CE5.0/CE6.0

2TechnicalDetails

2.1Ports

2.2Formulas

2.3OtherInterfacing

Alternatives

3API

4ProductHistory

GettingStarted

CheckingtheContents

Youshouldhavereceived:

Adifferentialgaspressuresensor

Asensorcable

InordertotestyournewPhidgetyouwillalsoneed:

APhidgetInterfaceKit8/8/8orPhidgetTextLCD

AUSBcable

ConnectingthePieces

1.ConnecttheGasPressureSensortooneofthe

AnalogInputsonthePhidgetInterfaceKit8/8/8using

thesensorcable.

2.ConnectthePhidgetInterfaceKittoyourPCusingthe

USBcable.

ProductsforUSBSensingandControl

Summary of content (5 pages)

PAGE 1
Products for USB Sensing and Control 1138 User Guide From Phidgets Support Contents 1 Getting Started 1.1 Checking the Contents 1.2 Connecting the Pieces 1.3 Testing Using Windows 2000 / XP / Vista / 7 1.4 Running Phidgets Sample Program 1.4.1 Updating Device Firmware 1.5 Testing Using Mac OS X 1.6 Using Linux 1.7 Using Windows Mobile / CE 5.0 / CE 6.0 2 Technical Details 2.1 Ports 2.2 Formulas 2.
PAGE 2
Testing Using Windows 2000 / XP / Vista / 7 Make sure you have the current version of the Phidget library installed on your PC. If you don't, follow these steps: 1. Go to the Quick Downloads section on the Windows page 2. Download and run the Phidget21 Installer (32bit, or 64bit, depending on your system) 3. You should see the icon on the right hand corner of the Task Bar. Running Phidgets Sample Program Double clicking on the works properly.
PAGE 3
. When the sensor is plugged in, the value in Analog In should be close to 40. 4. You can adjust the input sensitivity by moving the slider pointer. 5. Click on the Sensors button to bring up the Advanced Sensor Form. 1. In the Sensor box of the input you attached the sensor to, select the 1138 Differential Gas Pressure Sensor from the drop down menu. 2. This is the pressure differential between the sensor ports, measured in Pascals and pounds per square inch. 3.
PAGE 4
For hosing, we recommend using polyurethane tubing. We have had good results with 2.4mm ID tubing from Emiplastics.com. In imperial measurement, 3/32” ID tubing is equivalent. This is available through laboratory supply stores such as Cole Parmer. Formulas The Formula to translate SensorValue into Pressure is: Note: 1.0 kPa = 0.145 psi Other Interfacing Alternatives If you want maximum accuracy, you can use the RawSensorValue property from the PhidgetInterfaceKit.
PAGE 5
// set up the interfacekit object InterfaceKit IFK = new InterfaceKit(); // link the new interfacekit object to the connected board IFK.open("localhost", 5001); // Get sensorvalue from analog input zero int sensorvalue = IFK.sensors[0].Value; // Convert sensorvalue into temperature in degrees Celsius double roomtemp = Math.Round(((sensorvalue * 0.22222) ‐ 61.11), 1); See the PhidgetInterfaceKit User Guide for more information on the API and a description of our architecture.