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.
|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.|
|Sensor Type||Temperature/Humidity (Ambient)|
|Controlled By||VoltageRatio Input|
|Sensor Output Type||Ratiometric|
|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 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|
|Supply Voltage Min||4.8 V DC|
|Supply Voltage Max||5.3 V DC|
|Current Consumption Max||3.9 mA|
|Output Impedance||1 kΩ|
|Operating Temperature Min||-30 °C|
|Operating Temperature Max||80 °C|
|Date||Board Revision||Device Version||Comment|
|May 2008||0||N/A||Product Release|
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:
Now that you have everything together, let's start using the 1125!
In order to demonstrate the functionality of the 1125, 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 1125.
After plugging in the 1125 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:
The Phidget Control Panel can also be used to test your device. Double-clicking on an object will open an example.
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:
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.
The Phidget libraries automatically convert voltage to humidity (% RH). See the Phidget22 API for more details. The Formula to translate voltage from the sensor into Relative Humidity is:
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 Phidget libraries automatically convert voltage to temperature (°C). See the Phidget22 API for more details. The Formula to translate voltage from the sensor into temperature is:
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.
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.
|Image||Part Number||Price||Number of Voltage Inputs||Voltage Input Resolution|
|HUB0000_0||$30.00||6 (Shared)||* 16 bit|
|SBC3003_0||$120.00||6 (Shared)||* 16 bit|
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||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|