LaskaKit SHT45 Air temperature and humidity sensor

Product detailed description

Choosing a good and preferably cheap temperature sensor is not easy. We want quality and a reasonable price at the same time. Based on these requirements, a module for measuring temperature and humidity was developed. On the board you will find the SHT45 sensor from the company Sensirion in the DFN4 case, pull-up resistors and a blocking capacitor.

Thanks to a specially designed plate, the sensor part can be broken off and used for installation in the sensor housing or any other suitable housing. After breaking, there are no more pullup resistors on the ^I2Cboard and it is necessary that the device to which the sensor will be connected has them.

Sensor Refresh:

• We recommend that you refresh the sensor before the first start-up to remove any contamination and ensure that the sensor measures within the specified parameters. The refresh procedure consists of starting the internal heating of the sensor at a temperature of approximately 120°C for approximately 90 minutes until the measured humidity value drops to approximately 0–100 % RH. It is better to perform this procedure in a room with a humidity of about 50% RH and a temperature of about 23°C. Depending on the temperature and humidity in the room, the procedure time may vary. For this purpose, we have created a program for Arduino, where its basic properties are incorporated into the control of the internal heating and simultaneous measurement of the current humidity value. When the measured humidity drops to 5% RH, the cycle stops and switches to the standard measurement. The accurate values are then available after the sensor has cooled down to ambient temperature.
• This procedure can be used even if the sensor stops measuring the correct values over time.

Specifications:

• Power: 1.1-3.6V DC - typically 3.3V DC
• Resolution: 16bit
• Temperature measurement range: -40-125°C
• Temperature measurement resolution: 0.01°C
• Temperature measurement accuracy: ±0.1°C
• Humidity measurement range: 0-100% RH
• Humidity measurement resolution: 0.01 RH
• Humidity measurement accuracy: ±1.5% RH
• Dimensions: 17x12mm

Scope of Delivery:

• 1pc LaskaKit SHT45 Air temperature and humidity sensor
• 1pc pin bar

Note:

• This product is not a standalone functional unit and may require professional installation.
• Product images are for illustrative purposes only and may sometimes differ from the actual appearance of the item. However, this does not change their basic properties.
• Outdoor case not included
• When used outdoors, we recommend spraying with PLASTIK 70, WARNING! the varnish must not get on the sensor itself, tape it over before spraying.