Products for USB Sensing and Control

Products for USB Sensing and Control

PHIDGETS Inc.

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

4-20mA Adapter

ID: 1132_0

A common output mode for industrial sensors is 4-20mA. This adapter lets you use 4-20mA sensors with an Analog Input or VINT Hub port.

$30.00

Quantity Available: 298

Qty Price
5 $28.50
10 $27.00
25 $24.00
50 $21.00
100 $19.50

4-20mA sensors can be connected to and powered by the provided terminals on the 4-20mA Adapter board. The 1132 will measure the current passing through the attached sensor and convert it to a voltage between 0 and 5V.

The 4-20 mA Adapter board internally produces +15V from the 5V supply which is used to power the connected sensor, eliminating the need for an external power supply.

If the Adapter board is being used in very noisy environments, place a ferrite bead on the sensor current loop close to where it is attached to the 1132.


Comes packaged with

Product Specifications

Board Properties
Controlled By Voltage Input (0-5V)
Sensor Output Type Non-Ratiometric
Electrical Properties
Output Impedance 1 kΩ
Available External Voltage 15 V DC
Current Consumption Min 1.8 mA
Current Consumption (4mA Load) 18.4 mA
Current Consumption (22mA Load) 130 mA
Inrush Current Max (Hot Plug) 160 mA
Supply Voltage Min 4.8 V DC
Supply Voltage Max 5.3 V DC
Capacitive Load Max 1.5 μF
Measurement Error Max ± 1.2 %
Physical Properties
Recommended Wire Size 12 - 24 AWG
Operating Temperature Min -40 °C
Operating Temperature Max 85 °C

Documents

Projects

Product History

Date Board Revision Device Version Comment
May 2010 0 N/A Product Release

Getting Started

Welcome to the 1132 user guide! In order to get started, make sure you have the following hardware on hand:


Next, you will need to connect the pieces:

1132 0 Connecting The Hardware.jpg
  1. Connect the 1132 to the 1018 with the Phidget cable.
  2. Connect a sensor with a 4-20mA output to the 1132.
  3. Connect the 1018 to your computer with the USB cable.


Now that you have everything together, let's start using the 1132!

Using the 1132

Phidget Control Panel

In order to demonstrate the functionality of the 1132, 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 1132.

First Look

After plugging in the 1132 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 Input

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

1018 Sensors VoltageInput.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 1132 from the Sensor Type drop-down menu. The example will now convert the voltage into amperage (mA) automatically. Converting the voltage to amperage (mA) 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

Sensors can be connected to and powered by the provided terminals on the 1132. The 1132 will measure the current passing through the attached sensor and convert it to a voltage ranging from 0 to 5V. The adapter board is a non-ratiometric device, so make sure to connect it to a Voltage Input object. If the formula gives a range below 4mA (i.e. a voltage less than 0.9V), then this indicates that the sensor is open. The 1132 board internally produces +15V from the 1018 (compatible products) analog voltage. This supply rail is used to power the connected sensor, eliminating the need for other external power supplies. If the 1132 is being used in very electrically noisy environments, place a ferrite bead on the sensor current loop close to where it is attached to the 1132. This helps prevent energy coupled into long runs of wiring from causing computer problems.

Formulas

The Phidget libraries automatically convert voltage to amperage (mA). See the Phidget22 API for more details. The Formula to translate voltage from the sensor into current consumed is:



Selecting a 4-20mA Sensor

Review the datasheet for the 4-20 mA sensor that you have selected to be certain that it complies with the specifications of the 1132. Mostly you want to make sure that the sensor you want to use does not require more than 15V and that its capacitive load is equal to or less than 1.5µF. The following sensor has been successfully tested with the 1132.

Manufacturer Part Number Description
Honeywell SPTmA0015PG5W02 Stainless Steel 0-15 psi Pressure Sensor


Phidget Cable

Analoginput.jpg

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.

Enclosures

You can protect your board from dust and debris by purchasing an enclosure. An enclosure will also prevent unintentional shorts caused by objects touching the pins on the bottom of the board or any terminal screws.

Product Physical Properties
Image Part Number Price Material
3826_1 $7.00 Clear Acrylic

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

If you need an adapter that can provide more than 15V to the sensor, here's a list of all of our 4-20mA adapters:

Product Board Properties Electrical Properties
Image Part Number Price Controlled By Available External Voltage
1132_0 $30.00 Voltage Input (0-5V) 15 V DC
DAQ1400_0 $20.00 VINT 12 or 24 V DC