TT421- Intelligent Temperature Transmitter

Smart two-wire, 4-20 mA loop power transmitter with HART communication;
Measures temperature using resistive sensors (RTD’s), thermocouples,
Sensors with resistance or mV outputs;
Linearization international standards and custom calibration.

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The Digital Temperature Transmitter TT421 is the cost effective solution for temperature measurement and control dedicated for head mounting.

The Smar TT421 is a powerful and extremely versatile programmable temperature transmitter, which can be used with practically all relevant temperature sensors as well as with load cells, resistance position indicators, etc.

A same unit can be used for different measuring ranges and many types of sensors reducing drastically calibration and maintenance time.

Complete configuration is possible using PC software interface (CONF401) or via Hand-Held (HPC301). Configured to customer specs, prior to shipping.

Industrial Technical Services from Mississauga, Ontario is a single source Instrumentation and Automation company. We provide certified calibrations, PLC programming, custom controls and Panels.

 
Specifications
Output Signal
Two-wire, 4-20 mA with HART superimposed digital communication protocol Version 5.1.Output current according to NAMUR-NE43.
Power Supply
12-45 Vdc
Input
Single unit accepts signal from:
  • Thermocouples, RTD's and Differential RTD's
  • mV signals from radiation pyrometers, load cells, etc
  • Ohm signals from position indicators, etc
Isolation
Factory tested isolation for 1500V
Accuracy
± 0.02 % basic accuracy
Measured Types
Single sensor: 2, 3, or 4 wire configurations
Dual Sensor
- Differential
- Average
- Maximum
- Minimum
Configuration
Complete configuration is possible using PC software interface or via Hand-Held
Calibration
With applied reference and without reference.
Access Protection
Yes, via passwords
Diagnostics
Yes, via communication.
Control Block
Yes, via PID function.
Setpoint Generator function
Yes, ideal for batch processes.
Alarms
Dual, trip levels adjustable over entire range.
High or Low action.
Acknowledge, messaging
Linearization
Linearization international standards and custom calibration according to Callendar Van Dusen
Temperature Limits
Ambient: -40 to 75ºC (-40 to 167ºF)
Humidity Limits
10 to 100% RH
Mounting
Mounts in industry standard DIN Form B connection head.

Contact Us

“Industrial Technical Services is a single source Instrumentation and Automation company. We provide certified calibrations, PLC programming, custom controls and Panels”.

 

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