Watlow Electric SERIES 146 User Manual

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Watlow Series 146 User’s Manual

Series 146

User’s Manual

Temperature Regulator

1241 Bundy Boulevard, P.O. Box 5580, Winona, Minnesota USA 55987-5580

Phone: +1 (507) 454-5300, Fax: +1 (507) 452-4507, Internet: http://www.watlow.com

Registered Company

Winona, Minnesota  USA

TOTAL

3 Year Warranty

CUSTOMER

SATISFACTION

$5.00       Made in the U.S.A.

0600-0004-0010 Rev D

December 2001

Supersedes: 0600-0004-0010 Rev C

(2089)

Control Mode

• High or low limit, factory selectable

• Manual or automatic reset on power loss, factory selectable

• Latching alarm with manual reset on over or under temperature

• Internal and/or customer supplied external reset switch

Operator Interface

• LED indication of output status

• Dial scale calibrated to compensate for sensor

non-linearities

• Integral or remote set point

• Dual temperature scale (°C and °F)

• 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, 100

Ω @ 0°C calibrated for 0.003850Ω/Ω

°C curve

Output

• Electromechanical relay, 8A, Form C, SPDT: 8A @ 240VÅ resis-

tive, 8A @ 28VΠ(dc) resistive, 275VA pilot duty rated

Accuracy

Adjustable Set Point, integral or remote

• Calibration accuracy: ±1% of span, at 25°C ± 3°C (77°F ±5°F)

ambient and rated line voltage ± 1%

• Set point accuracy: ±3% of dial scale

• Accuracy span: 540°C (1000°F) minimum

Fixed Set Point

• Calibration accuracy: ±6°C/±10°F of setting, at 25°C ±3°C (77°F

±5°F) ambient and rated line voltage ±1%

Temperature Stability

• Thermocouple: Typically 9µV/°C ambient (5µV/°F ambient) input

referenced

• RTD: Typically 0.2°C/°C ambient (0.2°F/°F ambient)

Voltage Stability

• ±0.01% of span (min. span of 540°C or 1000°F) per % of rated

line voltage

Agency Approvals

• CE: EN61010 - Safety

EN61326 - Industrial Immunity, Class B Emissions

Installation Category 2, Pollution Degree 2

•

873, File #E43684

•

to C22.2 No. 24, File #E43684

• Approved for use in commercial cooking applications

• FM Class 3545, File J.I. 3007307

Terminals

• Captive screw, cage clamp connection, 4 mm (0.155 in.) max.

width screwdriver blade, 30 to 14-gauge wire 

Mounting

• DIN rail, DIN EN50022, 35 mm x 7.5 mm

• Sub-panel flush mounting

Power

• 24V~, +10%/-15%, 50/60 Hz

• 120V~, +10%/-15%, 50/60 Hz

• 230V~ to 240~, +10%/-15%, 50/60 Hz

• 10VA maximum power 

Operating Environment

• 0 to 55°C (32 to 131°F)

• 0 to 90% RH, non-condensing

• Storage temperature: -20 to 85°C (-4 to 185°F)

Dimensions

• Width: 60 mm (2.28 in)

• Height: 115 mm (4.45 in)

• Depth: 100 mm (3.89 in)

Weight

• 0.3kg (0.7 lb.)

UL® is a registered trademark of Underwriter’s Laboratories, Inc.

Note: Specifications subject to change without notice.

Specifications

The Watlow Series 146 is a DIN rail mount, tempera-

ture regulating controller with a thermocouple or RTD

sensor input. The DIN rail mounting offers quick and easy

installation with the use of simple hand tools. The con-

troller may also be flush mounted.

The Series 146 is designed to meet the needs of a

wide range of safety applications. Factory selectable

options include high or low control mode with either

manual or automatic reset on power loss.

The Series 146 has an LED for output status

indication and can be ordered with an integral or remote

adjustable set point, or a fixed set point.

General Description