Temperature and Humidity Controller
Dual-display controller for applications that need precise control of both temperature and humidity. Designed around the behaviour of the compressor, heaters and humidifier, with alarms for overshoot, undershoot, door open and low water level.
- Manufactured in Mumbai, India
- Making test & control instruments since 1984
- ISO certified · NABL accredited
Key Features
Applications
Certifications
Technical Specifications
Display
- Dual 4 digit, 7 segment LED
- Process value digits: 0.80" high
- Set value digits: 0.56" high
- 4 keys for set-up and operation
LED Indications
Dry heater, wet heater, compressor, temperature alarm, humidity alarm, water level error, temperature tuning, %RH tuning
Measurement
- Resolution: 1 / 0.1 / 0.01 / 0.001
- Accuracy: 0.3% FS
- Temperature unit: °C
- Sampling rate: 250 ms
Control
- Action: PID or ON-OFF
- Logic: Heat / Cool
- Proportional band: 0.5 to 99.9 °C
- Integral time: 0 to 3600 sec
- Derivative time: 0 to 300 sec
- Cycle time: 1.0 to 100.0 sec
- Output power limit: 0 to 100%
Compressor & Alarms
- Compressor delay: 0 to 500 sec
- Compressor function: Auto / ON / OFF
- Alarm modes: Low / High / Deviation / Band
Digital Inputs
- Input 1: Water level
- Input 2: Door open / alarm acknowledge
Outputs
- Dry heater, wet heater, compressor: Relay / SSR drive (factory set)
- Alarm: SSR drive
- Water fill: Relay
- Relay: 5A @ 250 V AC / 30 V DC
- SSR drive: 12 V DC @ 30 mA
Communication (optional)
- RS-485, half duplex
- Modbus RTU
- Sensor excitation: 5 / 10 / 12 / 24 V (jumper selectable)
Supply
90 to 270 V AC (24 V DC available on request)
Environmental
- Operating: 0 to 50 °C
- Storage: -20 to 75 °C
- Humidity: 95% RH (non-condensing)
- Protection: IP 65 (front side)
Mechanical
- 96 (W) x 96 (H) x 65 (D) mm, panel mounting
- Panel cut-out: 92 x 92 mm
- Weight: 150 g
- Molded ABS enclosure, black
- 1 pair of mounting clamps
- Barrier type terminals, cable up to 2.5 mm²
Temperature Input
| Sensor input | Range | Resolution | Accuracy |
|---|---|---|---|
| Pt-100 (RTD) | -100 to 450 °C | 1 °C | ±1 °C |
| Pt-100 (RTD.1) | -99.9 to 450.0 °C | 0.1 °C | ±0.3 °C |
| 0 to 20 mA | -1999 to 9999 | 1 / 0.1 / 0.01 / 0.001 | ±0.1% of full scale |
| 4 to 20 mA | -1999 to 9999 | 1 / 0.1 / 0.01 / 0.001 | |
| 0 to 1 V DC | -1999 to 9999 | 1 / 0.1 / 0.01 / 0.001 | |
| 0 to 10 V DC | -1999 to 9999 | 1 / 0.1 / 0.01 / 0.001 |
Humidity Input
| Sensor input | Range | Resolution | Accuracy |
|---|---|---|---|
| 0 to 20 mA | -1999 to 9999 | 1 / 0.1 / 0.01 / 0.001 | ±0.1% of full scale |
| 4 to 20 mA | -1999 to 9999 | 1 / 0.1 / 0.01 / 0.001 | |
| 0 to 1 V DC | -1999 to 9999 | 1 / 0.1 / 0.01 / 0.001 | |
| 0 to 3.3 V DC | -1999 to 9999 | 1 / 0.1 / 0.01 / 0.001 | |
| 0 to 5 V DC | -1999 to 9999 | 1 / 0.1 / 0.01 / 0.001 | |
| 0 to 10 V DC | -1999 to 9999 | 1 / 0.1 / 0.01 / 0.001 | |
| RH20 | 0.0 to 100.0 | 1 / 0.1 / 0.01 / 0.001 | |
| RH35 | 0.0 to 100.0 | 1 / 0.1 / 0.01 / 0.001 |
Frequently Asked Questions
Why control temperature and humidity with one unit?
In chambers and rooms the two affect each other. One controller manages the heaters, humidifier and compressor together, so the set conditions are reached and held smoothly.
Which sensors can be connected?
Temperature: Pt-100 RTD, or mA / volt signals. Humidity: mA / volt signals, or RH20 and RH35 sensors.
What outputs does the PE 9100 provide?
Outputs for dry heater, wet heater, compressor, alarm and water fill. Heater and compressor outputs are factory set to relay or SSR drive. Relays are rated 5A @ 250 V AC / 30 V DC.
How is the compressor protected?
The compressor output has an adjustable delay of 0 to 500 seconds, and its function can be set to Auto, ON or OFF.
Can it log data to a computer?
Yes. The optional RS-485 port supports Modbus RTU communication.
What supply does it need?
90 to 270 V AC. A 24 V DC supply is available on request.