UT150L {1/16 DIN} Green Indicating Limit Controllers

Green Series, FM approved, Limit Controllers
(Affordable compact fail safe temperature controllers)


  • 4 digit LED display
  • 2 °C ±1 digit for TC — 1°C ±1 digit for RTD
  • Universal inputs
  • Alarm types: 22 types
  • 1 setpoint
  • Hi or Low Limit control
  • Latching action
  • Timer function- energizes / de-energizes output relay
  • 2 (alarm or timer outputs) and Retransmission
  • IP65 splash-proof and dust-proof designed front panel
  • Communications
    • RS485 communication (optional)
    • Modbus Communication (optional)
    • PC-Link & Ladder protocols are supported


  • 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 UT150L are an FM approved limit controllers that can be configured either as a high or a low limit controller. The UT150L features universal input, two alarm outputs (22 alarm types), retransmission , a timer to count the total time the setpoint is exceeded, and a register to retain the maximum temperature reached. The RS485 communication interface are optional

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The UT150L provides fail-safe protection to your process, preventing damage to equipment or product. It will shut down the process when the preset temperature value is reached and cannot be reset by the operator until the process has returned to safe mode. It is limit control made easy affordable with the compact UT150L.

  • Literature
  • Specifications
Literature and Technical Information
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Panel Instrumentation

++ UT150LL | General specification sheet (274 kB)
++ UT150LL | Manual (307 kB)
++ UT150LL | Brochure (803 kB)
++ UT150LL| Communication Settings (217 kB)
Model: Yokogawa UT150L limit controller
PV/SP Data display: 4 digits / 4 digits
PV inputs: 1 universal input (TCs, RTDs, mV, V)
Setpoints: 2
Control scan period: 500ms
PV Retransmission Output: 1 point (4 to 20mA)
Types: 8
Alarm output: 2 relay contacts
Relay contact capacity: 1A at 240V AC or 1A at 30V DC
Limit Control Outputs
Number: 1 point for reset
Type: Three terminals (NC, NO, and common) 250V AC or 30V DC, 3A (resistance load)
Control Outputs
Number: 1
Relay Contact Output: 3 A at 240 V AC or 3 A at 30 V DC
Type: RS485 (MODBUS,PC-Link, Ladder)
Front Protection: IP65
Power Supply: 24VAC/DC or 90 to 264V AC (±10%), 50/60Hz
Power Consumption: 8VA
General Approvals UL, CE, CSA
Operating Temperature: 0 to 50°C ( 40°C or less in close mounting side-by-side)
Relative Humidity: 20 to 90% RH (no condensation)
Storage Temperature: -25 to 70°C
Dimensions: 48(W)×48(H)×100(D) (mm)
Mounting: Direct panel mounting; mounting bracket, one each for upper and lower mounting
Weight: 0.2 kg