Product category:
Process Hardware (Pipes, Nozzles, Heaters, etc)
News Release from: Intertec Hess | Subject: Intertec's "smart" programmable heater
Edited by the Engineeringtalk Editorial
Team on 14 August 2007
Heater works in harsh process
environments
Intertec's smart heater consists of a heating element plus a networkable digital PID controller with encapsulated electronic circuitry.
Intertec's "smart" programmable heater for hazardous area applications gives process instrumentation engineers have an exceptionally compact and versatile solution for the precise regulation of air temperature inside instrument or analyser enclosures Compared with the common alternative of trace heating cables, the new solution is very much smaller and easier to install
This article was originally published on Engineeringtalk on 29 Jan 2008 at 8.00am (UK)
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Approved for worldwide Zone 1 use, by IEC, ATEX, GOST and CSA, Intertec's smart heater consists of a heating element plus a networkable digital PID controller with encapsulated electronic circuitry.
Dual temperature sensors are supplied: one intrinsically safe sensor that can be freely positioned in the enclosure or cabinet, another embedded in the heater body.
These sensors allow the system to control air temperature precisely while also ensuring safety in hazardous areas by limiting the heating element's maximum surface temperature to the required 'T' rating - from T3 to T6 (200 to 85C).
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Different styles and sizes of elements including finned, block and fluid heaters are available - as well as types that mount directly onto ANSI/ISA standard SP76 analyser substrates - to suit the application requirement.
The power density offered by Intertec smart heaters can be very high, as systems can be fitted with elements capable of outputs from 500W to 2kW.
By comparison, trace heating cables offer typical outputs of around 10 to 30W per metre.
This powerful heating capability makes smart heaters ideal for higher temperature control applications of up to 150C.
This upper limit, combined with the system's control over surface temperature, makes the heater suitable for many instrument and analyser applications with difficult media in hazardous chemical, petrochemical, oil and gas processing areas.
Whatever the output power and type of heating element selected, systems are supplied as an approved and certificated system for use in Zone 1 environments (and/or Class I, Division 1 areas for USA applications).
No costly inspections and certification processes are required.
As standard, a smart heater comes with an RS485 serial networking interface to program the heater, and to network heaters to a PC for monitoring and diagnostic purposes.
Optionally, a USB or RS232 interface convertor can be provided.
Systems are supplied with a comprehensive PC software package.
The PID controller is very compact and measures just 57 x 125 x 80mm.
These compact dimensions make it very easy to install in instrument enclosures compared with long lengths of trace heating cable.
In addition to supplying the heater, Intertec can supply the complete instrument enclosure system with instrument, manifold and tubing.
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