The iTHERM CompactLine TM311 is a compact thermometer designed for industrial temperature measurement, featuring IO-Link communication. This device is engineered for fast, highly accurate measurements, ensuring maximum process safety and control. It offers a robust design with various options for electrical connection, process connections, and thermowell types, making it suitable for a wide range of industrial, hygienic, and aseptic applications.
Function Description:
The iTHERM CompactLine TM311 measures temperature and transmits the data via IO-Link or 4 to 20 mA output. In IO-Link digital mode, it cyclically transmits temperature values and the state of the switch output in 32-bit chunks. The device supports the IO-Link Smart Sensor Profile 2nd Edition (SSP type 3.1), providing identification, diagnosis, and digital measuring sensor capabilities. It can be configured in SIO mode (Standard IO-Mode) or IO-Link communication mode, with the latter enabling direct access to process and diagnostic data and configuration during operation.
The device features an integrated transmitter that can output either IO-Link or a 4 to 20 mA signal. This compact integration reduces cost and effort, prevents incorrect wiring, and offers optimum protection up to IP69. The thermometer is available with different insert types, including iTHERM TipSens for shortest response times (3 mm or 6 mm diameter) and Pt100 (TF) basic inserts, offering excellent cost-performance ratios. The iTHERM TipSens design minimizes the necessary immersion length, leading to better product protection and improved process flow.
The device includes diagnostic functions that monitor its operational status. It generates diagnostic messages (e.g., S825 for device temperature at 100 °C, F001 or Failure current for 125 °C or higher) and provides status signals categorized according to NAMUR Recommendation NE 107 (F = Failure, C = Function Check, S = Out of Specification, M = Maintenance Required). These messages are displayed via the IO-Link communication interface and are saved in an event logbook with timestamps.
Important Technical Specifications:
- Measuring Range:
- Pt100 (TF) basic: -50 to +150 °C (-58 to +302 °F)
- iTHERM TipSens: -50 to +200 °C (-58 to +392 °F)
- Ambient Temperature Range (Ta): -40 to +85 °C (-40 to +185 °F)
- Process Temperature Range: The thermometer electronics must be protected against temperatures over 85 °C (185 °F) by an extension neck of appropriate length.
- Output Signal:
- Without integrated electronics: Pt100, 4-wire connection, class A.
- 4 to 20 mA version: Analog output (4 to 20 mA; variable measuring range), Digital output (C/Q, IO-Link or switch output).
- IO-Link version: Analog output (4 to 20 mA; measuring range 0 to 150 °C (32 to 302 °F)), Digital output (C/Q, IO-Link or switch output).
- Power Supply: 10 to 30 VDC, protected against reverse polarity. IO-Link communication requires at least 15 V.
- Maximum Current Consumption: ≤ 23 mA for 4 to 20 mA.
- Switch-on Delay: 2 s.
- Measured Error (according to IEC 60751):
- Without electronics: Maximum 0.55 °C (0.99 °F) for Pt100 Cl. A.
- With electronics: Digital ≤ 0.48 °C (0.86 °F) for Pt100 Cl. A.
- With electronics and sensor-transmitter-matching: Digital ≤ 0.14 °C (0.25 °F) for Pt100 Cl. A.
- Long-term Drift: Digital output IO-Link: ±9 mK (1 month) to ±31 mK (5 years). Current output: ±2.5 μA (1 month) to ±8.8 μA (5 years).
- Response Time (T63 and T90):
- 6 mm direct contact, straight tip (Pt100 basic): t63 = 5 s, t90 < 20 s.
- 6 mm direct contact, straight tip (iTHERM TipSens): t63 = 1 s, t90 = 1.5 s.
- 6 mm thermowell, straight tip (iTHERM TipSens): t63 = 1 s, t90 = 3 s.
- Degree of Protection: IP69 (as per IEC/EN 60529).
- Shock and Vibration Resistance: 3 g in the 10 to 500 Hz range (as per IEC 60751).
- Electromagnetic Compatibility (EMC): Meets IEC/EN 61326 series and NAMUR Recommendation EMC (NE21).
- Materials: AISI 316L (1.4404 or 1.4435) for wetted parts, with delta ferrite content < 1%.
- Process Connections: Various options including cylindrical, spherical, threaded (G1/2", G1/4", M14x1.5, M18x1.5, NPT1/2"), weld-in adapters, clamps (ISO 2852, Microclamp/Tri-clamp), milk pipe connections (DIN 11851), metal sealing systems (M12x1, G1/2"), and Varivent®.
- Device ID: 0x030100 (196864)
- Vendor ID: 0x0011 (17)
Usage Features:
- IO-Link Communication: Enables direct access to process and diagnostic data, and allows for device configuration during operation. Supports IO-Link Data Storage for easy device replacement.
- Flexible Installation: Can be installed in pipes, tanks, or other plant components. Various process connections are available to suit different applications, including hygienic and aseptic designs.
- Adjustable Immersion Length: The immersion length can be optimized, with iTHERM TipSens inserts minimizing the required length for better process flow and product protection.
- Configurable Output: Users can select between IO-Link and 4 to 20 mA output modes. The 4 to 20 mA output allows for variable measuring ranges and configurable failure modes (low alarm or high alarm).
- Simulation Functions: The device supports simulation of current output and process variables, allowing users to verify the correct adjustment of outputs and the function of downstream switching units without actual process changes.
- Parameterization: Device parameters such as damping, sensor offset, switch point values, and failure current can be configured via the IO-Link master.
- User Roles: The operating menu is structured with different user roles (Operator, Maintenance, Specialist) to control access to parameters and functions.
Maintenance Features:
- No Special Maintenance: The device generally requires no special maintenance work.
- Cleaning: The device must be cleaned whenever necessary, which can be done while installed (e.g., CIP/SIP cleaning). Specific IP code requirements should be observed during cleaning to prevent damage.
- Recalibration: Regular recalibration of RTD inserts is recommended to verify accuracy, as they may drift over time depending on the application. Calibration can be performed by Endress+Hauser or qualified technical staff onsite.
- Spare Parts: Spare parts are available online, and users are advised to quote the device's serial number when ordering.
- Troubleshooting: The device provides diagnostic information and an event logbook to assist with troubleshooting. Common issues like incorrect supply voltage, wiring, or configuration are addressed with corrective measures.
- Device Replacement: IO-Link Data Storage facilitates easy device replacement by storing configuration data.
- Documentation and Services: Endress+Hauser offers various services, including technical information, brief operating instructions, and access to the W@M Device Viewer and Operations App for device data and documentation. Applicator software is available for selecting and sizing measuring devices.
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