KTH2-RI and KTH2-RV are DIN-rail mounted industrial temperature and humidity transmitters with high-precision digital sensing technology, offering either 0–10V voltage output or 4–20mA current output for industrial automation and environmental monitoring applications.
| Model | Output Interface | Supply Voltage | Installation | Dimensions | Recommended Applications |
|---|---|---|---|---|---|
| KTH2-RI | 0~10V Voltage Output | DC 24V | DIN Rail | 65 × 45.4 × 28.8 mm | PLC Analog Input, Building Automation, Laboratory Environmental Monitoring |
| KTH2-RV | 4~20mA Current Output | DC 24V | DIN Rail | 65 × 45.4 × 28.8 mm | Industrial Control Systems, Long-distance Signal Transmission, Factory Automation |
5. Application Scenarios
1. Industrial Automation Control
The KTH2-RV provides a standard 4–20mA output, making it ideal for PLCs and DCS systems where long cable runs require excellent noise immunity and stable signal transmission.
2. Smart Building HVAC
The KTH2-RI offers a 0–10V analog output compatible with most HVAC controllers, enabling precise temperature and humidity regulation while improving energy efficiency.
3. Environmental Monitoring Stations
With high-precision digital sensing and conformal coating protection against moisture, fungus, and salt spray, both models provide reliable long-term monitoring in outdoor meteorological and environmental applications.
4. Laboratories and Industrial Warehouses
The compact DIN rail design simplifies cabinet installation while delivering accurate environmental measurements for clean rooms, laboratories, warehouses, and production facilities.
6. Technical FAQ
Q: What is the primary difference between KTH2-RI and KTH2-RV?
A: The sensing element and measurement performance are identical. The difference lies in the analog output interface. KTH2-RI provides a 0–10V voltage output suitable for voltage-input PLCs, while KTH2-RV outputs the industrial-standard 4–20mA current signal, which offers superior noise immunity and longer transmission distances.
Q: Why is 4–20mA preferred in industrial environments?
A: The 4–20mA current loop is less susceptible to voltage drop and electromagnetic interference over long cable runs. KTH2-RV is therefore recommended for factory automation, distributed control systems, and outdoor monitoring installations.
Q: Can these transmitters be directly connected to a PLC?
A: Yes. KTH2-RI is compatible with PLC analog voltage inputs (0–10V), while KTH2-RV connects directly to PLC or DCS analog current input modules supporting the standard 4–20mA interface.
Q: What advantages does the conformal coating provide?
A: The PCB is coated with industrial-grade conformal coating, providing protection against moisture, fungus, condensation, and salt spray. This significantly improves long-term reliability in humid factories, coastal areas, and harsh industrial environments.
Q: Why is DIN rail installation beneficial?
A: The standard DIN rail mounting enables fast cabinet installation, simplifies maintenance, reduces wiring complexity, and allows seamless integration into industrial control panels and automation systems.
