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TT421
Head Mount Smart Temperature Transmitter 4 to 20 mA + HART
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.
Some Characteristics:
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Output Signal
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Two-wire, 4-20 mA with HART superimposed digital communication protocol Version 5.1.Output current according to NAMUR-NE43.
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Power Supply
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12-45 Vdc
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Input
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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
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Isolation
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Factory tested isolation for 1500V
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Accuracy
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? 0.02 % basic accuracy
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Measured Types
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- Single sensor: 2, 3, or 4 wire configurations
- Dual Sensor
- Differential
- Average
- Maximum
- Minimum
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Configuration
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Complete configuration is possible using PC software interface or via Hand-Held
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Calibration
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With applied reference and without reference.
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Access Protection
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Yes, via passwords
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Diagnostics
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Yes, via communication.
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Control Block
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Yes, via PID function.
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Setpoint Generator function
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Yes, ideal for batch processes.
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Alarms
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Dual, trip levels adjustable over entire range.
High or Low action.
Acknowledge, messaging
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Linearization
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Linearization international standards and custom calibration according to Callendar Van Dusen
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Temperature Limits
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Ambient: -40 to 75 ? C (-40 to 167 ? F)
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Humidity Limits
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10 to 100% RH
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Mounting
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Mounts in industry standard DIN Form B connection head.
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