Products

Sign up for Zesta Connection

Be first to hear about

  • Promotions
  • New Products
  • Product Updates

and much more by signing up for our Zesta Connection newsletter.

HomeProducts Controllers Watlow Controllers Temperature & Process Controllers Watlow CV Series Temperature Controller

Watlow CV Series Temperature Controller

CV Series
Zesta Watlow CV Series Temperature Controller
Zesta Watlow CV Series Temperature Controller
The basic and limit microprocessor-based controllers from Watlow® provide an economical solution for applications requiring simple on-off control. These controllers and limits are available in a broad range of packaging options, allowing users to select the best version for their individual application. The controllers and limits are available with or without an operator interface and can be ordered in a 1/8 DIN square panel mount, DIN-rail mount or open-board design configurations.

The basic and limit design provides significant improvements in the performance, repeatability and accuracy offered by analog basic temperature and limit controllers.

The variable options for the SERIES CV (controller) and SERIES LV (limit) include an operator interface for viewing and selecting the set point. A red, four-character, seven segment LED displays the set point to show the process option. The set point selection is made with a continuous turn rotary encoder, or with discrete up/down cursor keys. Operating range temperature values are customer definable in the product configuration part number.

These basic and limit controllers are UL® recognized and include CE approvals. The limit controllers are FM approved with special UL® approval for the open-board potted versions. CV and LV panel mount controllers ordered with discrete up/down cursor keys include NEMA 4X/IP65 seal protection. Watlow’s basic temperature and limit controllers include industry leading service and support and are backed by a three-year warranty.


Watlow: Your Heat Solutions Resource Brochure (EN)
Watlow: Vos Solutions de Chauffage Brochure (FR)
Back to Temperature & Process Controllers
Customize this product Buy now
Features
Specifications
Ordering information
Resources
Applications

Product Features

Fixed or adjustable set points
  • Provide tamper-proof operation
  • Offer control flexibility
Four character LED display
  • Improves set point selection accuracy
Multiple mounting options
  • Minimize installation time
Heat or cool operation
  • Provides application flexibility
High or low limit with auto or manual reset
  • Provides application flexibility
Fahrenheit or Celsius operation with indication
  • Offers application flexibility
Sensor break protection
  • Provides positive system shutdown
Agency approvals
  • Meet certification requirements/compliance
Microprocessor-based technology
  • Ensures accurate, repeatable control

Product Specifications

On-Off Controller:
  • Microprocessor based, on-off control mode
  • Nominal switching hysteresis, typically 3°F (1.7°C)
  • Input filter time: 1 second
Operator Interface:
  • Four digit, seven segment LED displays, 0.28 in. (7 mm) high
  • °F or °C indicator LED
  • Load/Alarm indicator LED
  • Continuous turn, velocity sensitive rotary encoder for set point adjustment
  • Front panel key on push for set point or push for show process options (on-off controller only)
Standard Conditions For Specifications:
  • Rated line voltage, 50 to 60Hz, 0 to 90% RH non-condensing, 15-minute warm-up
  • Calibration ambient range: 77°F (25°C) ±3°C
Sensor Input (Thermocouple):
  • Grounded or ungrounded
  • Type E, J, K, T thermocouple types
  • >10 MΩ input impedance
  • 250 nV input referenced error per 1Ω source resistance
RTD:
  • 2-wire platinum, 100Ω
  • DIN curve (0.00385 curve)
  • 125 μA nominal RTD excitation current
Input Accuracy Span Range:
  • Type E: -328 to 1470°F or -200 to 800°C
  • Type J: 32 to 1382°F or 0 to 750°C
  • Type K: -328 to 2282°F or -200 to 1250°C
  • Type T: -328 to 662°F or -200 to 350°C
  • RTD (DIN) -328 to 1472°F or -200 to 800°C
Thermocouple Input:
  • Calibration accuracy: ±1% of input accuracy span, ±1° at standard conditions and actual calibration ambient
  • Exception: Type T, ±2.4% of input accuracy span for -200 to 0°C (-328 to 32°F)
  • emperature stability: ±0.3° per degree change in ambient
RTD Input:
  • Calibration accuracy ±1% of input accuracy span ±1° at standard conditions and actual calibration ambient
  • Temperature stability: ±0.2° per degree change in ambient
Allowable Operating Ranges:
  • Type E: -328 to 1470°F or -200 to 800°C
  • Type J: -346 to 1900°F or -210 to 1038°C
  • Type K: -454 to 2500°F or -270 to 1370°C
  • Type T: -454 to 750°F or -270 to 400°C
  • RTD (DIN) -328 to 1472°F or -200 to 800°C
Output Types Switched dc (non-isolated, on-off controller only):
  • Supply voltage max.: 24VDC into an infinite load
  • Supply voltage min.: 5VDC at 10mA
  • Min. load impedance: 500Ω
Electromechanical Relay, Form C:
  • Min. load current: 100mA
  • 8A @ 240VAC or 30VDC max., resistive
  • 250VA pilot duty, 120/240VAC max., inductive
  • Use RC suppression for inductive loads
  • Electrical life 100,000 cycles at rated current
Agency Approvals:
  • UL® 60730-1 recognized temperature controller and indicator on potted models
  • UL®50 IP65 - tactile key models
  • UL® 873 recognized temperature controller and indicator, File # E43684
  • UL® 197 reviewed for use in food service appliances
  • ANSI Z21.23 gas appliance thermostat approval
  • Temperature control and indicator CSA 22.2 No. 24, File # 30586
  • NEMA 4X/IP65 (SERIES CV and LV panel mount controllers with up/down cursor keys)
Terminals:
0.25 in. (6.3 mm) quick connect, push on terminal or removable screw style terminal block
Power:
  • 24VAC +10%; -15%; 50/60Hz, ±5%
  • 100 to 120VAC +10%; -15%; 50/60Hz, ±5%
  • 200 to 240VAC +10%; -15%; 50/60Hz, ±5%
  • 10VA max. power consumption
  • Data retention upon power failure via nonvolatile memory
Operating Environment:
  • 32 to 158°F (0 to 70°C)
  • 0 to 90% RH, non-condensing
  • Storage temperature: -40 to 185°F (-40 to 85°C)
Dimensions:
  • DIN-rail model can be DIN-rail or chassis mount
  • DIN-rail spec DIN 50022, 1.38 in. x 0.30 in. (35 mm x 7.5 mm)