MD+DI Online is part of the Informa Markets Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them. Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Heating and Cooling Controllers Fit Many Applications

Originally Published MPMN June 2004

HOTLINE

Heating and Cooling Controllers Fit Many Applications

Microprocessor-based units offer flexibility and options

Susan Wallace
Heating and cooling controls from Fenwal are designed for fast, trouble-free installation and wiring.

The new Series 59 from Fenwal (Ashland, MA) comprises heating and cooling controls that can be tailored for many OEM applications. Features include added power-input choices, more sensor options, four different relay output options, alarm and time functions, and a wide operating temperature range. 

The controllers are designed for fast, trouble-free installation and wiring. They display temperature and other parameters on large LEDs, and provide accurate, stable control. Temperature is sensed by a thermistor, RTD, thermocouple, or solid-state relay, 
and then the controller turns a heater or refrigeration unit on or off as programmed. 

Set-point temperatures and other parameters are programmed using two push buttons on the face of the device. Differential and set-point offset values are fully adjustable, permitting application-specific programming for stable control and less-frequent cycling. Settings can be tamperproof, factory preset, or field adjustable. 

The Series-59 product line includes timer features that can sound an alarm or shut down processes at a predetermined temperature set point. The LED shows set-point or process temperature and error messages, and a status light indicates when the controller is heating or cooling.

The controller accepts 24-V ac or dc or 120/208/240-V ac power supplies. It can be used in conjunction with thermocouples or solid-state relays in addition to thermistors and RTD sensors. 

Output types include 5-A SPDT, 30-A SPST, and 15-A SPDT, and an SSR driver. The Series-59 controllers are certified to UL Standard 873. They meet the requirements of CSA Standard CAN C22.2 Mp. 24-93, and ANSI Z21.23 for gas appliance approval. CE approval is pending. 

Fenwal Controls

400 Main St.
Ashland, MA 01721
tel: 508/881-2000
fax: 508/881-7619
url: www.fenwaycontrols.com

Copyright ©2004 Medical Product Manufacturing News

Hide comments
account-default-image

Comments

  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.
Publish