Key Specifications
- Outputs
- Relay, logic level, SCR zero-crossing and analog output
- Communication
- RS232 12m, RS485 1.2km
- Alarm
- Optional relay alarm output
- Typical applications
- Timber drying, environmental testing and humidity control
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Environment, Pressure & Water Treatment
TH135
Humidity Controller
The TH135 dry/wet bulb humidity controller is used in industrial and environmental equipment that requires psychrometric humidity measurement, with control, communication and transmission options.
Technical Detail
Technical Details
The TH135 dry/wet bulb humidity controller measures humidity using two Pt100 temperature inputs and psychrometric calculation. It supports control outputs, alarm output, communication and measured-value transmission options for environmental and industrial humidity control.
Model Coding
| TH135 | / | Output 1 | / | Output 2 | / | Alarm 1 | / | Communication | / | Option |
| (1) | (2) | (3) | (4) | (5) |
| 0 | No output |
|---|---|
| R | Relay output, normally open contact, 3A / 250VAC |
| L | Logic output, 20V / 10mA, for driving high-power SSR |
| T | SCR zero-crossing output |
| D | Analog output: 0-10mA, 4-20mA, 0-20mA, 0-5V, 1-5V or 0-10V |
| 0 | No alarm output |
|---|---|
| R | Relay output, normally open contact, 3A / 250VAC |
| 0 | No communication |
|---|---|
| 232 | RS232, 3-wire, isolated, communication distance 12m |
| 485 | RS485, 2-wire, isolated, communication distance 1.2km |
| 0 | No option |
|---|---|
| BS | Measured-value transmission |
Example: TH135/R/R/0/485 means output 1 and output 2 are relay outputs, alarm 1 is not fitted, and RS485 communication is included.
Panel Description
Dimensions and Mounting
Wiring
Specifications
| Accuracy | Temperature: ±0.2%; humidity: ±1% |
|---|---|
| Sample rate | 125 ms |
| Measurement range | -100-200°C, 0-99% RH |
| Input | Two Pt100 signals for dry/wet bulb humidity measurement |
| Output | Relay, logic output, SCR zero-crossing trigger, or analog output |
| Alarm | Relay output; high, low and deviation alarm modes |
| Control algorithm | ON/OFF control, PID control and PID auto-tuning |
| Communication | RS485 or RS232 |
| Power supply | 85-264VAC, 45/60Hz |
| Environment | Operating temperature 0-50°C, relative humidity ≤85% |
| Dimensions | 96 x 96 x 100 mm (W x H x D) |
Documents
- TH135 Humidity Controller Manual PDF
