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

Humidity/Temperature Sensor

ID: 1125_0

This board combines an ambient temperature sensor and a humidity sensor and connects to two Analog Inputs or VINT Hub ports.

$50.00

Quantity Available: 949

Qty Price
5 $47.50
10 $45.00
25 $40.00
50 $35.00
100 $32.50

Measures Relative Humidity from 10% to 95% with a typical error of ±2%RH at 55% RH.

Measures Ambient Temperature in the range of -30°C to +80° C with a typical error of ±0.75°C in the 0°C to 80°C range.

The temperature sensor component is rated at -40°C to +100°C, but the other components on the board, the connector and the cable are rated at -30°C to +80°C. In a fast prototyping environment the temperature sensor board can be pushed to the ratings of the sensor component, but you should use the lower temperature ratings if you plan to use the 1125 in a commercial application.

Comes packaged with

Functional

Warnings

warning This sensor is intended for use in non-condensing environments. Allowing the sensor to come in direct contact with water vapor or condensation could damage the circuitry.

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_2B $80.00 8 10 bit
1019_1B $110.00 8 10 bit
1203_2B $95.00 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


Getting Started

Welcome to the 1125 user guide! In order to get started, make sure you have the following hardware on hand:


Next, you will need to connect the pieces:

1125 0 Connecting The Hardware.jpg
  1. Connect the 1125 temperature output to the HUB0000 using one of the Phidget cables.
  2. Connect the 1125 humidity output to the HUB0000 using the second Phidget cable.
  3. Connect the HUB0000 to your computer with the USB cable.


Now that you have everything together, let's start using the 1125!

Using the 1125

Phidget Control Panel

In order to demonstrate the functionality of the 1125, we will connect it to the HUB0000, 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 1125.

First Look

After plugging in the 1125 into the HUB0000, and the HUB0000 into your computer, open the Phidget Control Panel. You will see something like this:

HUB0000 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 1125 from the Sensor Type drop-down menu. The example will now convert the voltage into temperature (°C) and humidity (% RH) automatically. Converting the voltage to temperature (°C) and humidity (% RH) is not specific to this example, it is handled by the Phidget libraries, with functions you have access to when you begin developing!


Finding The Addressing Information

Before you can access the device in your own code, and from our examples, you'll need to take note of the addressing parameters for your Phidget. These will indicate how the Phidget is physically connected to your application. For simplicity, these parameters can be found by clicking the button at the top of the Control Panel example for that Phidget.

The locate Phidget button is found in the device information box

In the Addressing Information window, the section above the line displays information you will need to connect to your Phidget from any application. In particular, note the Channel Class field as this will be the API you will need to use with your Phidget, and the type of example you should use to get started with it. The section below the line provides information about the network the Phidget is connected on if it is attached remotely. Keep track of these parameters moving forward, as you will need them once you start running our examples or your own code.

All the information you need to address your Phidget

Using Your Own Program

This sensor produces an analog signal between 0-5V depending on the input temperature or humidity. This signal is measured by the Phidget it is plugged into, such as the HUB0000 or the 1018, and interpreted by the Phidget library. You will need to reference the User Guide and API for that Phidget for more information on how to use this type of device in your program. For more information about the signal produced by this device, check out the Voltage Ratio Input Primer.

You are now ready to start writing your own code for the device. The best way to do that is to start from our examples:

When used with a Phidget that measures the signal from this sensor, this Phidget is compatible with our VoltageRatioInput Examples. They outline the use of the VoltageRatioInput API, which is used to interpret the signal from this device.

Once you have your example, you will need to follow the instructions on the page for your programming language to get it running. To find these instructions, select your programming language from the Software Overview page.

Technical Details

General

The 1125 is a precision temperature to voltage converter that outputs a voltage that is directly proportional to temperature. The temperature sensor component is rated at -40°C to +100°C, but the other components on the board, the connector and the cable are rated at -30°C to +80°C. In a fast prototyping environment the 1125 can be pushed to the ratings of the sensor component, but you should use the lower temperature ratings if you plan to use the 1125 in a commercial application.

The 1125 measures the relative humidity of the environment around the sensor. Built in temperature compensation produces a linear output ranging from 10% to 95% relative humidity. Values outside of this range may be usable but will have increased error.

Formulas

The Phidget libraries can automatically convert sensor voltage into temperature (°C) and humidity (% RH) by selecting the appropriate SensorType. See the Phidget22 API for more details. The formulas used to translate voltage ratio from the sensor into temperature and relative humidity are as follows:



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.

Documents

Projects

Product History

Date Board Revision Device Version Comment
May 2008 0 N/A Product Release

This device doesn't have an API of its own. It is controlled by opening two VoltageRatioInput channels on the Phidget that it's connected to. For a list of compatible Phidgets with VoltageRatio Inputs, see the Connection & Compatibility tab.

You can find details for the VoltageRatioInput API on the API tab for the Phidget that this sensor connects to.

Product Specifications

Sensor Properties
Sensor Type Temperature/Humidity (Ambient)
Controlled By VoltageRatio Input
Sensor Output Type Ratiometric
Temperature Sensor
Ambient Temperature Min -30 °C
Ambient Temperature Max 80 °C
Ambient Temperature Resolution 0.2 °C
Temperature Error Typical (At 25°C) ± 0.5 °C
Ambient Temperature Error Max ± 2 °C
Humidity Sensor
Humidity Min 10 %RH
Humidity Max 95 %RH
Humidity Resolution 0.4 %RH
Humidity Error Typical ± 3 %RH
Humidity Error Max ± 5 %RH
Humidity Response Time Max 10 s
Electrical Properties
Supply Voltage Min 4.8 V DC
Supply Voltage Max 5.3 V DC
Current Consumption Max 3.9 mA
Output Impedance 1 kΩ
Physical Properties
Operating Temperature Min -30 °C
Operating Temperature Max 80 °C

Have a look at our temperature/humidity sensors:

Product Sensor Properties Temperature Sensor Humidity Sensor
Image Part Number Price Sensor Type Controlled By Ambient Temperature Min Ambient Temperature Max Humidity Min Humidity Max
1125_0 $50.00 Temperature/Humidity (Ambient) VoltageRatio Input -30 °C 80 °C 10 %RH 95 %RH
HUM1000_0 $20.00 Humidity / Temperature VINT -40 °C 85 °C 0 %RH 100 %RH