Humidity Sensor with Waterproof Connector
This is a highly durable and stable stable humidity and temperature sensor mouned in a waterproof connector housing. This can be used in applications such as agricultural and extreme outdoor environments.
Product Highlights:
- OEM Humidity Sensor with waterproof connector
- Rugged waterproof construction
- Especially suitable for agricultural applications and outdoors with a shield.
- Temperature compensated for high accuracy over a wide temperature range.
- High accuracy, extremely low drift.
- Relative humidity accuracy: up to ±1.5 %RH
- Temperature accuracy: up to ±0.1 °C
- Current consumption: normal state: under 1mA
- Plug-in module, fully interchangeable
- I²C interface easy to integrate into your application with two gpio.
-
RoHS conformance
Available Options:
HM-F
Hum/Temp Flush Mount Sensor,with 3m long cable.
HM-C1-3M
Hum/Temp I2C sensor pluggable module with 3m long cable
HM-C1-2M
Hum/Temp I2C sensor pluggable module with 2m long cable
HM-W1-S
Pluggable Hum/Temp Module, short probe for wall mount, stainless steel pipe diameter10mm ,pipe length 35mm,125mm length cable, With Waterproof Connector.
HM-D1-S
Pluggable Hum/Temp Module, duct probe style, longer pipe, stainless steel pipe diameter10mm ,pipe length 140mm,20mm length cable , With Waterproof Connector
SENSOR-OUT
Outdoor temp sensor, 3m Cable, with waterproof connector.
Humidity Sensor With Waterproof Connector
This OEM Humidity Sensor with waterproof connector is designed for wet and dirty environments. The I2C sensor is over molded into a plastic housing which in turn plugs into a waterproof connector. This rugged sensor is good for a wide range of applications, from everyday settings like pools, aquariums, and agricultural setups to extreme environments such on the ski hill in snow making equipment.
Building on a decade of experience providing humidity sensing solutions to OEMs handling the most demanding applications, this sensor serves as an OEM solution and, therefore, requires an interface to your CPU using the I2C protocol.
If the sensor should have problems you can quickly swap the module out with a new one using no tools, just pull the sensor off and plug in a new one.
The compact sensor easily fits into tight OEM spaces like ducts and small equipment nooks for easy to install.
There is a sintered stainless steel filter covering the sensor which provides an extra level of protection against drops and dust yet allows vapor to pass to the sensing element.
4th Gen. High-Accuracy, Ultra-Low-Power, 16-bit, Relative Humidity and Temperature Sensor from Sensirion, SHT40 series sensing element.
Use this sensor with any CPU, see our Humidity & temp transmitters for the typical electronics required to turn the I2C sensor into a 0-10V signal or communicate over RS485.
I2C Quick Start – Hello World
Figure 1 (left-hand side) shows a typical application circuit for the SHT40.
After minimal supply voltage and a 1 ms power-up, the sensor becomes ready for I2C communication. Figure 1 (right-hand side) pseudo-codes the quickest way to measure humidity and temperature. Together with the conversion formulae given in equations ( 1 ), ( 2 ), and ( 3 ), the digital signals can be translated into relative humidity and temperature readings.
Pseudo code
i2c_write(i2c_addr=0x44, tx_bytes=[0xFD])
wait_seconds(0.01)
rx_bytes = i2c_read(i2c_addr=0x44,
number_of_bytes=6)
t_ticks = rx_bytes[0] * 256 + rx_bytes[1]
checksum_t = rx_bytes[2]
rh_ticks = rx_bytes[3] * 256 + rx_bytes[4]
checksum_rh = rx_bytes[5]
t_degC = -45 + 175 * t_ticks/65535
rh_pRH = -6 + 125 * rh_ticks/65535
if (rh_pRH > 100):
rh_pRH = 100
if (rh_pRH < 0):
rh_pRH = 0
See more detailed info on the Sensirion SHT40 series sensor element here: Sensirion SHT40