UT35A-L {1/4 DIN} Advanced Limit Controllers

General purpose, FM approved Limit Controllers with 3 alarms
(For Hi or Low Limit Control)


  • A 14-segment, active (PV display color changing function) color LCD display
  • Navigation keys (SET/ENTER and Up/Down/Left/ Right arrow keys) are employed to facilitate making settings.
  • Quick setting function -Setting only the minimum necessary parameters for operation is possible.
  • 1 setpoint
  • Hi or Low Limit control
  • Latching action
  • universal inputs
  • 3 alarm relay outputs
  • Standard retransmission output (Can also be used as15V DC loop power supply terminals)
  • Communications
    • RS-485 (Modbus (RTU/ASCII) ladder, PC-Link )
    • Ethernet


  • ideal for ovens, kilns
  • Industrial and lab ovens/furnaces
  • Plastics and thermal forming
  • where protection against out-of-range temperature condition is a critical requirement


The Yokogawa UT35A-L is a precision limit controller with universal I/O and 3 alarm outputs. it has a large, easy-to-read LED display, it is FM approved limit controller that can be configured for High or Low limit control via it’s handy front keys.

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The UT35A-L provides fail-safe protection to your process, preventing damage to equipment and product. It will shut down your process when the preset temperature value is reached and cannot be reset by the operator until the process has returned to a safe condition. The UT35A-L has a register function that indicates the maximum temperature reached and a timer function that counts the duration time that the setpoint was exceeded. Limit control is made simple and safe with the UT35A-L.
  • Literature
  • Specifications
Literature and Technical Information
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Panel Instrumentation

++ UT35A-L Series| UT35A-L Specifications (330 kB)
++ UT35A-L Series| User’s Manual_1 (6.9 MB)
++ UT35A-L Series| Manual_2 (2.9 MB)
Model: Yokogawa UT35A-L General Purpose indicating controllers with Alarms
PV/SP Data display: 14-segment, 5 digits, LCD display white
11-segment, 5 digits, LCD display white
input Type: 1 Universal input (TC, RTD, mV, V, mA)
Indication accuracy ±0.1% of F.S.
Control scan period: 200 msec
Types: 8
Alarm output: 3 relay contacts
Limit Control Outputs  
Type: high limit or low limit
Limit action: latching
Digital inputs  
Number: 1
Type Latch release, LCD backlight ON/OFF switch, etc
Digital Outputs  
Number: 3
Relay Contact input
Number: 2
Input type: No-voltage contact input or transistor contact input
Use a contact with a minimum on-current of 1 mA or more
Use: Alarm output, FAIL output, PV High, PV Low, Dev High, etc
Relay Contact output
Number: 1 contact, 1 point
Alarm output: contact point 1a; 3 points (common is independent)
Type: Alarm output, FAIL output, etc.
high limit or low limit
Number: 1
Type: 4-20 mADC, 0 to 20 mA DC/ load resistance of 600 Ω or less
Number: 1
Type: RS-485, Ethernet
Other specifications  
Power supply: 100 to 240 VAC (+10%, -15%) or 24 VAC/DC (+10%, -15%) (option)
Power consumption: Max 18 VA
Front Protection: IP55
Operating Temp.: 0 to 40°C (32 to 104°F)
Storage Temp: -10 to 50°C (14 to 50°F)
Extreme temperature range: -20°C to 65°C (-4 to 149°F) Tropicalized or IP54 sealed units available
Relative Humidity: 95% (non condensing)
Weight: Max 0.5 kg
Case Dimensions  
Meter Face: 96 x 96 mm (3.8 x 3.8")
Case Depth: 100 mm (2.59")
Cut out: 91.4 x 91.4mm (3.6×3.6")