OT-ZW9100 Intelligent Temperature Controller 01

OT-ZW9100 Intelligent Temperature Controller

The OT‑ZW9100 series intelligent temperature and humidity controller is designed for automatic environmental temperature and humidity regulation. It is widely applicable in aquariums, breeding environments, and high‑/low‑voltage cabinets where strict temperature and humidity control is required.
The instrument uses an AVR high‑performance microprocessor for real‑time acquisition and automatic control of temperature and humidity. The humidity sensor is a HUMIREL capacitive sensor, while the temperature sensor is a high‑precision digital temperature sensor manufactured by MAXIM, offering high measurement accuracy and long service life.
A dual‑display LED digital panel is used to simultaneously show the ambient temperature and humidity.

Technical Specifications

Temperature Measurement Range: –55°C to 125°C; accuracy ±0.5°C; resolution 0.1°C

Humidity Measurement Range: 10%RH to 99%RH; accuracy ±5%RH; resolution 1%RH

Power Supply: AC220V (customizable for AC or DC input)

Instrument Power Consumption: ≤2W

Output Mode: Two active outputs; each relay contact rated 5A, maximum 10A (resistive load)

Sensor Type: Digital temperature and humidity sensor

Dimensions: 48 × 48 × 78 mm

Installation Method: Panel‑mounted or embedded; requires a 45 × 45 mm cutout on the mounting panel

Principles of Automatic Temperature and Humidity Control (Using Heating and Humidifying as Examples)

Heating Activation Condition: Actual temperature < lower temperature limit

Heating Deactivation Condition: Actual temperature > upper temperature limit

When the measured temperature falls below the lower temperature limit (e.g., 23.6°C), the heating output supplies 220V, the heater starts operating, and the heating indicator lights up. When the temperature rises to the upper temperature limit (e.g., 25.8°C), the heating output is turned off, the heater stops, and the system cycles to maintain temperature within the required range.

Humidifying Activation Condition: Actual humidity < lower humidity limit

Humidifying Deactivation Condition: Actual humidity > upper humidity limit

When the measured humidity falls below the lower humidity limit (e.g., 70%), the humidifying output supplies 220V, the humidifier starts operating, and the humidifying indicator lights up. When humidity rises to the upper limit (e.g., 85%), the output is turned off, the humidifier stops, and the system cycles to maintain humidity within the required range.

Note:
To prevent frequent switching caused by fluctuations near control thresholds, a delay mechanism is added. When temperature or humidity reaches the control point, the system waits for readings to stabilize before issuing ON/OFF commands. This reduces frequent heater/humidifier actions and extends equipment lifespan.