Cut-price temperature controllers stand comparison
A
CD Automation UK product story
Edited by the Engineeringtalk editorial team
May 12, 2003
"The best value temperature controller on the market" is the claim for the TBC range, available from Paragon Alliance.
"The best value temperature controller on the market" is the claim for the TBC range, available from Paragon Alliance.
With today's pressure to cut costs it's sometimes difficult not to compromise on quality, functionality or reliability.
The TBC series of single loop temperature and process controllers now offers the best of both worlds - a full range of features and reliable performance at a very competitive price.
The controllers are available in 10 different types and include the following sizes: 48 x 48, 48 x 96, 96 x 48, 72 x 72 and 96 x 96mm, each with a panel depth of just 80mm.
The five sizes come in a single set point controller or a 2 x 8 segment profile controller version.
Comprehensive functionality is available on this product range that includes a choice of heat, heat/cool (full PID on both heat and cool) and valve motor drive control outputs, up to three independent relay alarms with 17 alarm types, a retransmission signal of SP or PV, a remote set point input as well as RS232, RS485 and TTL communications.
There is also a seven-segment dual LED display which shows the process value and set point value in user mode with red and green four digit displays, respectively.
The status of important control criteria is clearly shown on the controller front panel with LED indication for output 1 and 2, alarms 1, 2 and 3, auto-tuning, program and manual mode as well as an LED bargraph displaying output power as a percentage (0 to 100% in 10% steps).
Parameter setting and modification can be carried out via a menu system that is accessed through membrane switches mounted on the front of each unit.
The default control mode of each model is set to PID but the user is able to select fuzzy logic or on/off control.
Full auto-tuning is available in the PID mode.
All models will accept thermocouple, RTD, DC Linear input - all with 14bit resolution.
Control outputs are available in 3A relay type, 20V solid-state relay drive and DC linear current/voltage.
Models are also available with standard 85 to 265V AC or 10 to 50V DC line supply.
All products within the range are compliant with CE marking.
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