Watlow Series 145 User Manual download pdf

Series 145

User’s Manual

Temperature Limit

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

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

The Watlow Series 145 is a 1/16 DIN temperature limit

controller with a thermocouple or RTD sensor input. The

1/16 DIN case features a front panel that provides the

Series 145 with water and corrosion resistance.

The Series 145 is designed to meet the needs of a wide

range of safety applications. It is available with a wide

variety of thermocouple and RTD ranges.

The compact size of the limit allows more flexibility in

applications where space is a problem. The Series 145 has a

standard integral setpot and a front panel LED output

status indicator.

(1927)

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

Operator Interface

• Sealed membrane front panel

• Integral set point

• Dual temperature scale (°F and °C)

• LED indication of output status

• Dial scale calibrated to compensate for sensor

non-linearities

• Integral reset switch

Input

• Thermocouple or RTD available

• Thermocouple with automatic cold junction compensation

• Thermocouple may be isolated or grounded

• 2- or 3-wire RTD input, platinum 100Ω, 500Ω, or 1000Ω @ 0°C

calibrated for DIN 0.003850Ω/Ω °C curve

• Sensor break protection de-energizes output

Output

• Electromechanical relay, 3A, Form C, SPDT: 3A @ 240V~, 3A @

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%

Temperature Stability

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

referenced

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

Voltage Stability

• ±0.01% of span (min span of 1000°F or 540°C) 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.3008516

Terminals

• Screw clamp terminal: 12-26 gauge wire

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

• Height: 2.1 in (55 mm)

• Width: 2.1 in (55 mm)

• Depth: 4.0 in (102 mm)

• Behind panel: 3.50 in (89 mm)

• Front panel: 0.5 in (13 mm)

Weight

• 0.7 lb (0.3 kg)

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

0600-0004-0009 Rev C

August 2000

Supersedes: 0600-0004-0009 Rev B

Registered Company

Winona, Minnesota USA

TOTAL

3 Year Warranty

1 2 3 4 5 6

Summary of Contents

Page 1 - Series 145

Series 145User’s ManualTemperature Limit1241 Bundy Boulevard, P.O. Box 5580, Winona, Minnesota USA 55987-5580Phone: 507/454-5300, Fax: 507/452-4507, I

Page 2 - Dimensions

2 Watlow Series 145 User’s ManualFigure 2a — Series 145 dimensions.Figure 2b — Series 145 panel cutout.• Use the correct sensor type per the model n

Page 3 - 2- and 3-Wire RTD

3 Watlow Series 145 User’s ManualPower WiringThermocoupleFigure 3b — Thermocouple wiring.NOTE: When an external device with a non-isolated circuit c

Page 4 - System Example

4 Watlow Series 145 User’s ManualFigure 4 — System wiring examples.1234789101156Series 104TemperatureController104C-1601-11004 (+) 5 (-)120V~L1L2136

Page 5 - Declaration of Conformity

5 Watlow Series 145 User’s ManualDeclaration of ConformitySeries 145WATLOW WINONA1241 Bundy BoulevardWinona, Minnesota 55987 USADeclares that the f

Page 6 - 145 _ - _ _ _ _ - _ 000

Connect according to input wiring instructions.Remove power to the controller and the controllerfrom the system. Apply power to the system withthe con