Manual

Series 147
User’s Manual
Temperature Limit
Watlow Controls
1241 Bundy Boulevard, P.O. Box 5580, Winona, Minnesota USA 55987-5580
Phone: [phone], Fax: [phone], Internet: http://www.watlow.com
Watlow’s Series 147 is an open-board temperature limit
with a thermocouple or RTD sensor input.
The Series 147 is designed to meet the needs of a wide
range of temperature limit applications. Installation and
setup are simple and easy, using basic hand tools. Factory
selectable options include high or low limit with either
manual or automatic reset on power loss.
The Series 147 has an LED output status indication
and can be ordered with an integral or a fixed set point.
(1885)
Control Mode
• High or low limit, factory selectable
• Manual or automatic reset on power loss, factory selectable
• Latching alarm with manual reset on overtemperature
• Customer-supplied reset switch
Operator Interface
• LED indication of output status
• Dial scale calibrated to compensate for sensor
non-linearities
• Integral set point
• Dual temperature scale (°F and °C)
• Fixed set point
• Manufactured to specified value
Input
• Thermocouple or platinum RTD available
• Thermocouple with automatic cold junction compensation
• Thermocouple may be isolated or grounded
• Thermocouple and RTD break protection de-energizes output
• 2- or 3-wire RTD input, 100Ω, 500Ω, or 1000Ω @ 0°C calibrated for
0.003850Ω/Ω °C curve, factory selectable
Output
• Electromechanical relay, 8A, Form C, SPDT: 8A @ 240VÅ resistive,
8A @ 28VÎ (dc) resistive, 275VA pilot duty rated
Accuracy
Adjustable Set Point
• Calibration accuracy: ±1% of span, at 77°F ±5°F (25°C ± 3°C)
ambient and rated line voltage ± 1%
• Set point accuracy: ±3% of dial scale
• Accuracy span: 1000°F (540°C) minimum
Fixed Set Point
• Calibration accuracy: ±10°F/±6°C of setting, at 77°F ±5°F (25°C
±3°C) ambient and rated line voltage ±1%
Agency Approvals
• CE: EN61010 - Safety
EN61326 - Industrial Immunity, Class B Emissions
Installation Category 2, Pollution Degree 2
• 873 Recognized, File #E43684
• Recognized to C22.2 No. 24, File #E43684
• Approved for use in commercial cooking applications
• FM Class 3545
Terminals
• Sensor input and remote setpot
• Screw clamp terminal: 12-26 gauge wire
• Power input and control output
• #6 screws on barrier strip
Power
• 120V~, +10%/-15%, 50/60 Hz
• 230V~ to 240~, +10%/-15%, 50/60 Hz
• 10VA maximum power
Operating Environment
• 32 to 131°F (0 to 55°C)
• 0 to 90% RH, non-condensing
• Storage temperature: -4 to 185°F (-20 to 85°C)
Dimensions
• Width: 4.5 in (114 mm)
• Length: 4.0 in (102 mm)
• Depth: 1.5 in (38 mm)
Weight
• 0.7 lb (0.3kg)
UL
®
is a registered trademark of Underwriter’s Laboratories, Inc.
Note: Specifications subject to change without notice.
Specifications
General Description
$5.00 Made in the U.S.A.
Printed on Recycled Paper
10% Postconsumer Waste
0600-0004-0011 Rev E
August 2000
Supersedes: 0600-0004-0011 Rev D
TOTAL
3 Year Warranty