Products
Temp and humidity sensor
Application:
Home appliance field: home appliances, humidity control, HVAC, dehumidifier, smart thermostat, room monitorProduct characteristics:
High accuracy, ±3.0% RH and ±0.5 ℃Description
The WHT 20 temperature and humidity sensor is embedded with a dual-row flat leadless SMD package suitable for reflow soldering. The temperature and humidity signals can be read out on different pins. The bottom surface is 3.0×3.0 mm and the height is 1.05 mm.
The sensor outputs a calibrated digital signal in standard I2C format. The WHT 20 series temperature and humidity sensor uses the transistor Vbe temperature characteristic to achieve high-precision temperature detection and the dielectric constant change after the medium absorbs moisture to achieve environmental humidity detection. It is a single-chip solution combined with the latest integrated circuit signal processing technology. It has the advantages of small size, low power consumption, high reliability and good compatibility.
Specifications of relative humidity
| Parameter | Condition | Min | Typical | Max | Unit |
| Resolution | Typical | 0.01 | %RH | ||
| Accuracy error1 | Typical | ±3.0 | %RH | ||
| Max | see figure as follows | %RH | |||
| Repeatability | ±0.1 | %RH | |||
| Hysteresis | ±1.0 | %RH | |||
| Non-linear | <0.1 | %RH | |||
| Response time2 | t63% | <8 | s | ||
| Scope of work | extended3 | 0 | 100 | %RH | |
| Prolonged Drift4 | Normal | <0.5 | %RH/yr | ||
Specifications of temperature
Parameter | Condition | Min | Typical | Max | Unit |
Resolution | Typical | 0.01 | ℃ | ||
Accuracy error | Typical | ±0.5 | ℃ | ||
Max | see figure as follows | ℃ | |||
Repeatability | ±0.1 | ℃ | |||
Hysteresis | ±0.1 | ℃ | |||
Response time5 | t63% | 5 | 30 | s | |
Scope of work | extended3 | -40 | 85 | ℃ | |
Prolonged Drift | <0.04 | ℃/yr | |||
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