Skip to Main Content
  • Instrumart
Instrumart logo
  • Products
  • Brands
  • Applications
  • Lab
  • Blog
  • Account
  • Email Us
  • 1-800-884-4967
  • What can we help you find?

    Can’t find what you’re looking for? Contact one of our engineers today. We’re open Mo-Th 8am to 5:30pm. Fr 8am to 5pm ET.
    • 1-800-884-4967
    • Email Us
    • Live Chat
  1. Temperature Controllers

Watlow Series 988/989 Temperature Controller

1/8 DIN temperature controller provides single unit cascade control of a process.

Watlow Series 988/989 Temperature Controller
Watlow Series 988/989
Retired products cannot be ordered
The Watlow EZ Zone PM is the recommended replacement

View Company Reviewsby Trustpilot
Manufactured
  • By Watlow
  • Made in the USA
Includes
  • FREE Ground Shipping on orders of $1,000 or more
  • FREE Lifetime Tech Support
Questions?
Call 1-800-884-4967 or Email Us.
Open Mo-Th 8am to 5:30pm. Fr 8am to 5pm ET.
Trustpilot

Overview

Features

  • Two universal analog inputs and one event input
  • Compact size 103mm behind panel depth
  • 10Hz sampling rate
  • Window configuration software and Modbus serial communications
  • Slidewire feedback input
  • Burst firing output
  • Signal conditioner power supply
  • NEMA 4X front panel

Description

The 1/8 DIN Watlow Series 988/989 temperature controller is truly an innovation in the control field. The Watlow Series 988/989 temperature controller is the first to combine so many key features into a single, 1/8 DIN size package. No other control offers the flexibility, compact size, and durability of Watlow Series 988/989 temperature controllers.

Watlow Series 988/989 temperature controllers meet a wide variety of needs in the process industries. With a broad range of I/O options, the Watlow Series 988/989 temperature controller allows control of virtually any process variable.

From the long list of product features, the Watlow Series 988/989 temperature controller's ability to provide single unit cascade control of a process is perhaps the most unique. Watlow Series 988/989 temperature controllers are is the only 1/8 DIN controllers with this feature.

With all the standard characteristics you expect from a Watlow control and more, the Watlow Series 988/989 temperature controller has expanded auto-tuning capabilities, increased alarm functionality, and several unique control algorithms.

Documents

Documents

  • Watlow Series 988/989 Temperature Controller Data Sheet PDF (100 KB)
  • Watlow Series 988/989 Manual PDF (1.7 MB)
  • Watlow Series 988/989 Manual Addendum PDF (17 KB)
  • Watlow Series 988/989 Communications Manual PDF (738 KB)
  • All possible part numbers

Need Help? Call a Temperature engineer at 1-800-884-4967

We're open Mo-Th 8am to 5:30pm. Fr 8am to 5pm ET

Shawn D. headshot Shawn D.
Senior Applications Engineer
20 years at Instrumart
Alex A. headshot Alex A.
Senior Applications Engineer
19 years at Instrumart
Ron J. headshot Ron J.
Temperature Engineering Lead
29 years at Instrumart
Rhys D. headshot Rhys D.
Applications Engineer
Luke M. headshot Luke M.
Applications Engineer
6 years at Instrumart
Dwight M. headshot Dwight M.
Senior Applications Engineer
28 years at Instrumart
David S. headshot David S.
Applications Engineer
Shawn D. headshot Shawn D.
Senior Applications Engineer
20 years at Instrumart
Alex A. headshot Alex A.
Senior Applications Engineer
19 years at Instrumart
Ron J. headshot Ron J.
Temperature Engineering Lead
29 years at Instrumart
Rhys D. headshot Rhys D.
Applications Engineer
Luke M. headshot Luke M.
Applications Engineer
6 years at Instrumart
Dwight M. headshot Dwight M.
Senior Applications Engineer
28 years at Instrumart
David S. headshot David S.
Applications Engineer
Shawn D. headshot Shawn D.
Senior Applications Engineer
20 years at Instrumart
Are you located in New England? Schedule an On-site Visit!

Recently Viewed

Watlow Series 988/989 Temperature Controller
Watlow Series 988/989 Temperature Controller
United States Canada Mexico
Shop
Products
Brands
Applications
Support
Customer Service
Ask a Question
Live Chat
Track Order
Fraud Prevention
Financing
Our Company
Blog
About Us
Contact Us
Jobs
Travel Information
Our Team
Privacy Policy
Terms and Conditions of Sale
Terms and Conditions of Purchase
Accessibility Statement
Connect
1-800-884-4967
sales@instrumart.com
Instrumart
35 Green Mountain Dr
S Burlington, VT 05403 US
Mo-Th 8:00am to 5:30pm ET
Fr 8:00am to 5:00pm ET
Join Us on Facebook
Follow Us on X

Instrumart is a member of a family of industrial stores

Instrumart Compressor World Pump World BioPharm World Filtration World Motion World Qualitrol Engineered Solutions Wholesale Air Pipe
© Instrumart 2025

Family of Industrial Stores

Welcome to our family of stores, your go-to source for a wide selection of commercial and industrial products in the flow control and automation sectors. Each store features a curated range of specialized industrial solutions, with many items designed to complement each other, ensuring you can find everything you need for your specific application. Explore the stores below to discover our extensive product offerings for your business needs.

  • Instrumart

    Shop Industrial and Laboratory Instruments.

    Shop Now!
  • Compressor World

    Shop Compressed Air Equipment.

    Shop Now!
  • Pump World

    Shop Industrial, Water, and Waste Water Pumps.

    Shop Now!
  • BioPharm World

    Shop Sanitary Process Solutions and Products.

    Shop Now!
  • Filtration World

    Shop Industrial Filters.

    Shop Now!
  • Motion World

    Shop Motion Control and Process Automation Systems.

    Shop Now!
  • Qualitrol

    Shop Remanufactured or Repair Automation Products.

    Shop Now!
  • Engineered Solutions

    Shop Custom Engineered and Manufactured Systems.

    Shop Now!
  • Wholesale Air Pipe

    Shop Air Piping.

    Shop Now!