Compact Temperature Transmitter for Industrial Monitoring
The Yokogawa YTA50 is a single-input temperature transmitter designed to convert signals from temperature sensors into a standard 4–20 mA DC signal.
It accepts RTD, thermocouple, resistance, and DC millivolt inputs, linearizes the input signal, and provides a proportional 4–20 mA output to the control or monitoring system. Its microprocessor-based sensing technology is designed to provide stable and accurate temperature measurement.
Why Use the YTA50 Instead of Direct Sensor Wiring?
A temperature transmitter converts the relatively low-level signal from a sensor into a standardized 4–20 mA industrial signal.
This makes it easier to transmit temperature measurements to a PLC, DCS, indicator, or other control system and can simplify sensor integration in industrial installations.
Yokogawa describes temperature transmitters as a way to simplify engineering and maintenance while avoiding some of the special cabling requirements associated with directly wired temperature sensors.
Flexible Sensor Inputs
The YTA50 supports a wide range of commonly used temperature sensor types.
The input can be configured for:
- RTD
- Thermocouple
- Resistance
- DC millivolt source
The official product page specifies 16 selectable input types, allowing one transmitter platform to accommodate different temperature measurement requirements.
Simple 4–20 mA Output
The YTA50 provides a standard two-wire 4–20 mA DC output.
This makes it straightforward to connect the transmitter to conventional industrial control and monitoring equipment without requiring a digital communication protocol.
For applications that specifically require HART communication, the Yokogawa YTA70 is the more appropriate head-mount alternative, as it adds HART communication to the 4–20 mA output.
Head Mount or DIN Rail Mount
The YTA50 is designed for flexible installation.
It conforms to DIN Form B and can be mounted in suitable connection heads. Yokogawa also provides a DIN rail mounting option, allowing the same transmitter platform to be installed in a control cabinet or field junction box where required.
Stable Microprocessor-Based Measurement
The YTA50 uses microprocessor-based sensing technology to process the sensor signal.
The input is linearized before being converted to the 4–20 mA output, helping provide a stable standardized signal for industrial temperature monitoring.
Key Features
- Single temperature input
- 4–20 mA DC analog output
- 16 selectable input types
- RTD, thermocouple, resistance, and DC mV input
- Microprocessor-based signal processing
- DIN Form B compliant
- Head-mount installation
- DIN rail mounting option
- Two-wire 4–20 mA output
- Programmable response time from 1 to 60 seconds
- Input/output isolation up to 1500 V AC
- Ambient temperature range of -40 to +85 °C under standard specifications
Typical Applications
The YTA50 is suitable for general-purpose industrial temperature monitoring, including:
- Process temperature monitoring
- Chemical processing
- Oil and gas facilities
- Power and utility systems
- Water and wastewater treatment
- Industrial machinery
- Heating and cooling systems
- Tank and pipeline temperature monitoring
- PLC and DCS temperature inputs
FAQ
What is the Yokogawa YTA50?
The YTA50 is a single-input temperature transmitter that converts RTD, thermocouple, resistance, or DC millivolt signals into a standard 4–20 mA DC output.
What sensors can be connected to the YTA50?
The YTA50 accepts RTD, thermocouple, resistance, and DC millivolt inputs. The input type is user-selectable, with 16 input types available.
Does the YTA50 have HART communication?
No. The YTA50 is a 2-wire analog 4–20 mA temperature transmitter.
If HART communication is required, the Yokogawa YTA70 provides HART 5 or selectable HART 5/HART 7 depending on configuration.
Is the YTA50 a head-mount temperature transmitter?
Yes. The YTA50 is a head-mount transmitter and conforms to DIN Form B mounting requirements.
Can the YTA50 be DIN rail mounted?
Yes. Yokogawa provides a DIN rail mounting kit for the YTA50, allowing it to be installed on a DIN rail when a head-mounted installation is not required.
What output does the YTA50 provide?
The YTA50 provides a two-wire 4–20 mA DC output for transmitting the measured temperature to a control or monitoring system.
What is the difference between the YTA50 and YTA70?
Both are compact Yokogawa temperature transmitters available for head-mount applications.
The main difference is communication: YTA50 provides a basic 4–20 mA analog output, while YTA70 adds HART digital communication to the 4–20 mA signal.
Can the YTA50 be used with both RTD and thermocouple sensors?
Yes. The input can be configured for either RTD or thermocouple measurement, as well as resistance and DC millivolt sources.
What is the response time of the YTA50?
The response time is programmable from 1 to 60 seconds, depending on the selected configuration.
What power supply does the YTA50 require?
The standard specification lists a 7 to 35 V DC supply range. For intrinsically safe configurations, the specified range is 7 to 30 V DC.
Is the YTA50 suitable for PLC and DCS systems?
Yes. Its standard 4–20 mA output makes it suitable for integration with conventional PLC, DCS, indicator, and other analog input systems.
Does the YTA50 provide sensor burnout detection?
Yes. The specification provides selectable high or low sensor burnout behavior.
