Controller Protection For Over-Temperature Hazard Brochure

SERIES 94
Protection For
Over-temperature
Hazards
The Series 94 is a microprocessor-based control with single
input, dual output. This controller is added to thermal
applications to limit over-temperature conditions. The limit
controller provides safety assurance against instances where a
high temperature runaway condition could occur from a
shorted input sensor or an output device that could fail in a
closed position. A limit controller is recommended for any
application where thermal runaway could affect operator
safety, cause damage to capital equipment, produce large
product scrap costs or create a fire hazard.
Watlow's Series 94 is a
1
⁄16 DIN temperature controller with a
NEMA 4X (IP65) front panel (optional). This high performance
controller is ideal for applications such as furnace and ovens,
environmental chambers, semiconductor, food processing or
anywhere an over-temperature condition could cause damage
to equipment, product, create a fire hazard or pose a risk to
personnel. Since the NEMA 4X front panel can be hosed or
wiped down without damage to the controller it is also
excellent for use where equipment needs to be cleaned
frequently. The compact size of the controller allows more
flexibility in applications where space is a problem.
The Series 94 also has many of the standard Watlow features,
such as dual digital display, accuracy at
± 0.1 percent of span,
a wide operating environment from 0 to 65˚C, at 115V~ line
voltage power/0-60˚C for 230V~ power, easy setup with
operator friendly prompts.
The Series 94 is manufactured by ISO 9001 registered Watlow
Controls and reliably backed by a three-year warranty.
Watlow Controls
A subsidiary of Watlow, Designer and Manufacturer of
Industrial Heaters, Sensors and Controls
1241 Bundy Boulevard,
Winona, Minnesota 55987-5580 USA
Phone: [phone]
FAX: [phone]
Internet: www.watlow.com
WIN-94-109
Your Authorized Watlow Distributor is:
Registered Company
Winona, Minnesota USA
ISO 9001
Features and Benefits
Dual display
• Displays limit set point and actual
Dual outputs
• Provides limit/alarm capacity
NEMA 4X (IP65) certified (BSEN) (optional)
• Offers water and dust resistance
Universal inputs
• Offers wide range of sensor inputs
Lock-out facility
• Offers high security
Output limit
• Safety shut down in over-temperature condition
Flexible hi/low alarm output
• Notifies of trouble
Programmable display default
• Shows actual, limit or alarm default display information
±0.1
percent accuracy
• Offers excellent range accuracy
© 1999 Watlow Electric Manufacturing Company Printed in the USA on Recycled Paper, 15% Postconsumer Waste
WIN-94-109 11/1/99 11:47 AM Page 1