Match the reference to the application.
The application needs the documented SHT31 temperature and humidity channels. Review airflow, enclosure heat and exposure around the sensing opening.
Review the specification →GUILCOR · Digital sensing
SHT31
humidity and temperature sensors
Combined relative humidity and temperature sensing for environmental monitoring. Plan air exchange, thermal isolation and contamination control around the sensing opening.
Understand the reference
Keep the humidity path open and clean.
The temperature and humidity channels describe the local conditions at the sensor. Enclosure heat, restricted airflow and contamination can make those conditions differ from the room or process being monitored.
SELECTION / YOUR APPLICATION
Is SHT31 the right starting point?
Review SHTC3 alongside SHT31.
Compare the humidity and temperature channels, host interface, electrical requirements and installation. The enclosure and exposure of the sensing opening are part of the selection.
Explore SHTC3 →Keep the complete specification together.
Keep the exact device and host-driver references. Check commands, data conversion, connector and protective opening as well as the required measurement interval.
Prepare your enquiry →These links support a specification review. They do not establish interchangeable parts or availability of a complete assembly.
Interactive application guide
Review the environmental installation.
A qualitative placement review. The built-in heater changes local temperature and humidity conditions; heater-on values should not be treated as unperturbed ambient readings.
Installation checks remaining
Measurement focus
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Technical reference
Reference details for the application.
| IC temperature range | −40 to +125 °C |
|---|---|
| Humidity range | 0 to 100 %RH |
| Supply | 2.4 to 5.5 V |
| Interface | I²C; address 0x44 or 0x45 |
| Output | Factory-compensated humidity and temperature; CRC-protected transfers |
| Variant reference | SHT31-DIS digital family |
Apply the limits to the right component.
The sensing IC, finished probe and host electronics have separate requirements. Cable insulation, sealing, connector, supply and mounting may impose a narrower operating range. A temperature step is not an accuracy guarantee, and an electronic conversion time is not a thermal response time.
Useful for HVAC, room monitors and environmental logging. Validate response after adding the enclosure and protective filter.
Wiring and integration
Specify the electrical interface and sensing path.
Device connections
Choose the ADDR level and check ALERT if required. Keep the sensing opening free of coating, adhesive and cleaning residues; choose any protective membrane for the application.
Shared bus integration
SDA and SCL usually need pullups to a compatible logic supply. Select them for bus capacitance, rise time and the devices that pull the lines low. Cable length, connectors and level shifters change the electrical behaviour.
Use 7-bit addresses consistently in the host API. Check clock stretching, timeout and recovery support. Successful communication does not prove that the reading is fresh or that the sensor is mounted at a representative measurement point.
Acquisition sequence
Make each reading traceable.
Discover
Confirm the part, address, supply and measurement mode.
Convert
Issue the device-specific command and satisfy its timing and power needs.
Validate
Read the correct registers, check CRC where provided and reject invalid or stale results.
Use
Apply the correct decoder or compensation, units and application limits.
Measurement quality
Separate electrical behaviour from thermal performance.
Accuracy and calibration
Choose the error limit over the actual operating interval. Add installation and readout effects. Define any calibration and periodic verification required by the application; factory calibration does not establish a universal no-maintenance policy.
Response and mounting
A sheath, potting material and mounting contact change how fast the sensing element follows the medium. Verify response in the intended flow and installation, rather than using conversion time as the finished-probe response.
Power and self-heating
Average dissipation depends on supply, conversion duty and surrounding electronics. Test the assembled probe at the intended reading rate. Do not assume a universal self-heating offset from the interface name.
Form factor library
Choose your probe format.
Choose the shape and mounting for the measurement point. These are GUILCOR probe families and a design service; confirm the compatible element, dimensions, cable and complete assembly for the selected reference.
Frequently asked questions
Questions before specifying the assembly.
Does the same enclosure suit a sealed temperature probe and a humidity sensor?
Humidity sensing needs access to representative water vapour. The enclosure and membrane must provide that access while meeting the application protection needs.
Can all I²C sensors share one bus?
Only when addresses, voltage levels, timing and host support are compatible. Fixed duplicate addresses may require a multiplexer or separate bus.
Is I²C a long-distance industrial interface?
It is commonly used for communication within electronic assemblies. Longer cables require an electrical design and validation appropriate to the installation; there is no universal permitted length.
What should I send for a probe quotation?
Send the reference and full ordering code, measured quantities, operating interval, error and response requirements, mounting drawing, cable and connector, host interface and quantity.
Technical sources
Continue with the reference documents.
GUILCOR / YOUR ENQUIRY
Define your SHT31 enquiry.
Describe both the electrical interface and the air reaching the sensor. Include the enclosure, airflow and exposure conditions when requesting an assembled probe.
Missing a reference or datasheet?
Send the component marking, equipment reference and any photographs or documents you have. These provide a starting point for identifying what must be confirmed.
The outline helps prepare your enquiry. Copying it does not send a request.
FOUR DETAILS THAT MOVE THE DISCUSSION FORWARD
01
Device and host
Exact device or module, interface, host or driver, supply and logic levels, addressing or wiring and measurement commands.
02
Measurement conditions
Temperature and humidity intervals, required accuracy and update rate, airflow, condensation risk, contamination and any additional measured quantities.
03
Assembly and connection
Sensing opening or filter, enclosure and ventilation, mounting location, nearby heat sources, connector and cable arrangement.
04
Project and validation
Sample and production quantities, target delivery, calibration or documentation needs, and the checks required before approval.