UIS-04PTKN Unistream Input/Output Expansion Module with 4 Temperature Inputs
MPN: UIS-04PTKN
Alt. SKU: UIS04PTKN

Why Choose the UIS-04PTKN Unitronics UniStream™ 4-Channel RTD Input Module?
The UIS-04PTKN is a high-precision analog input module designed for seamless integration with Unitronics' UniStream™ PLCs. It offers 4 RTD inputs, making it ideal for applications requiring accurate temperature measurements using various RTD sensors.
Technical Specifications
- Number of Inputs: 4 RTD inputs
- Supported RTD Types: PT1000, Ni1000, LG-Ni1000
- Input Range:
- PT1000: -200°C to 850°C
- Ni1000: -60°C to 250°C
- LG-Ni1000: -60°C to 250°C
- Input Resolution: 0.1°C
- Input Impedance: >100 MΩ
- Input Isolation: None (inputs are not isolated)
- Sensor Connection:
- Supports 2-wire, 3-wire, and 4-wire RTD connections
- Note: For optimal accuracy, use 3-wire or 4-wire connections with identical wire types and lengths
- Fault Detection:
- Overflow: Input value exceeds maximum range
- Underflow: Input value below minimum range
- Connection Fault: Disconnected or faulty sensor
- Fault Indication: Input LEDs turn red; corresponding I/O Status tag updated
- Power Supply: 24 VDC nominal (20.4–28.8 VDC)
- Bus Current Consumption: 90 mA max
- LED Indicators:
- Input LEDs: Indicate the status of each input (red for fault conditions)
- Status LED: Multi-color indicating operational status
- Environmental Ratings:
- Protection: IP20, NEMA1
- Operating Temperature: -20°C to 55°C (-4°F to 131°F)
- Storage Temperature: -30°C to 70°C (-22°F to 158°F)
- Relative Humidity: 5% to 95% (non-condensing)
- Operating Altitude: Up to 2,000 m (6,562 ft)
- Shock: IEC 60068-2-27, 15G, 11ms duration
- Vibration: IEC 60068-2-6, 5Hz to 8.4Hz, 3.5mm constant amplitude; 8.4Hz to 150Hz, 1G acceleration
- Dimensions: 135mm (W) x 65mm (H) x 44.2mm (D)
- Weight: 0.1 kg (0.220 lb)
UniStream™ Integration
The UIS-04PTKN seamlessly integrates with UniStream™ PLCs, either by snapping onto the back of a UniStream™ HMI Panel next to a CPU-for-Panel or by installing on a standard DIN Rail using a Local Expansion Adapter. This flexibility allows for efficient system expansion and customization.
Frequently Asked Questions
- What RTD types are supported?
- Is the module isolated?
- How is the module installed?
- What are the environmental ratings?
- How does the module indicate faults?
What Customers Say
"The UIS-04PTKN provides precise temperature readings and integrates effortlessly with our UniStream™ PLCs. It's a reliable choice for our industrial applications." – Process Engineer
Key Features of the UIS-04PTKN
- 4 RTD inputs for accurate temperature measurements
- Supports multiple RTD types: PT1000, Ni1000, LG-Ni1000
- Flexible sensor connections: 2-wire, 3-wire, and 4-wire
- Comprehensive fault detection and indication
- Compact and robust design suitable for industrial environments
Comparison with Other Modules
Compared to modules with fewer or different types of inputs, the UIS-04PTKN offers specialized support for RTD sensors, ensuring high-precision temperature monitoring. Its compatibility with various RTD types and flexible wiring options make it a versatile choice for temperature-sensitive applications.