1.General Description:
The Yokogawa YTA110 Temperature Transmitter is a strong, field-mount device from the YTA Series. It takes inputs from thermocouples, RTDs, ohms, or DC millivolts. Then, it converts these inputs into a standard 4 to 20mA DC analog signal. It represents Yokogawa’s base traditional temperature transmitter, featuring significant advances over direct-wired counterparts through digital communication and advanced diagnostics capabilities.
The design of the YTA110 allows users to measure temperature in control and safety applications. It supports BRAIN and HART protocols. You can only buy it from authorized Yokogawa distributors. The transmitter provides high accuracy, stability, and reliability, making it suitable for industrial environments that demand consistent performance.
2.Technical Specifications:
l Input: Thermocouple, RTD, ohm, or DC millivolt (single or dual inputs)
l Output: 4 to 20mA DC with digital communication (BRAIN or HART)
l Accuracy (typical): ±0.1% of span
l Cold Junction Compensation Accuracy (for T/C only): ±0.5°C (±0.9°F)
l Power Supply Effect: ±0.005% of calibration span per volt
l Ambient Temperature Effect: ±0.1% per 10°C
l Supply Voltage: 10.5–42 V DC (10.5–30 V DC for intrinsically safe type)
l Digital Communication: BRAIN or HART protocols
l Ambient Temperature Range:
l Standard: -40 to 85°C (-40 to 185°F)
l With integral indicator: -30 to 80°C (-22 to 176°F) (option dependent)
l Weight: 1.2 kg (2.6 lb) without indicator; +0.2 kg (0.4 lb) with indicator
l Protection Rating: IP66, IP67, and NEMA 4X
l Material: Stainless steel housing for durability and corrosion resistance
l Output Signal: 4 to 20 mA DC (unified analog output)
l Style: S3, 10.5–42VDC
l Measurement Range Example: 0–200°C (RTD/TC configurable)
l Dual Compartment Structure: Improves environmental resistance and reduces noise interference
3. Yokogawa YTA110 Features:
l High Performance:
Microprocessor-based sensing technology ensures excellent accuracy and long-term stability.
l High Reliability:
The dual-compartment structure provides superior protection against environmental conditions.
l Advanced Diagnostics:
Built-in self-diagnostics and sensor health monitoring reduce maintenance and downtime.
l Digital Communication:
Supports both BRAIN and HART protocols for smart configuration and monitoring.
l Variety of Sensor Inputs:
Accepts thermocouple, RTD, ohm, or DC millivolt signals; supports single or dual inputs.
l Advanced Linearization:
Handles 17 types of industrial temperature sensors and input signals for precise measurement.
l Local Parameter Setting Functions:
On-site adjustments can be made without additional configuration tools.
l Optional LCD Indicator:
Displays digital readout and bargraph for local monitoring.
l Foundation Fieldbus ITK Compatibility:
Integrates with FOUNDATION Fieldbus systems for expanded control capabilities (YTA610 variant).
l Rugged Design:
Constructed of stainless steel, ensuring long service life in demanding industrial settings.
l Safety and Certification:
TÜV NORD certified for SIL 2 applications, compliant with IEC 61508.
4.Applications:
The Yokogawa YTA110 is great for measuring, controlling, and monitoring temperature. It works well in industries like oil and gas, petrochemical, power generation, and food processing. Its high accuracy, 20 mA DC output, and digital communication ensure reliable integration with DCS and PLC systems.
5.Installation Procedure:
A. Precautions:
Before installation, review the YTA110 Installation Manual for guidelines and wiring procedures. Only qualified engineers or skilled personnel should perform the installation.
B. Model and Specification Check:
Verify the model number (e.g., YTA110-EA4DB/KU219) and configuration on the nameplate before setup.
C. Location:
Install the transmitter in a moderate environment, avoiding direct sunlight, vibration, or high humidity.
D. Mounting:
Use the provided two-inch pipe or flat panel mounting bracket for secure installation.
E. Wiring:
Follow the correct wiring schematic and grounding procedures. Confirm that no live voltage is present before connecting power. Check for proper insulation between terminals.
F. Testing:
After installation, perform an insulation resistance test between 20 ma output, input, and ground terminals to verify electrical integrity.
6.Related Models and Part Numbers:
YTA110-EA4DB/KU219 – Standard model configuration
YTA610 – Advanced model with FOUNDATION Fieldbus ITK and dual input support
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