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Watlow Series 988/989 Control - Retrofit Guide

Watlow has discontinued the Series 988/989. They are no longer available

Use the Retrofit Application below to find the Watlow recommended replacement
for your Watlow Series 988/989 Control or call us for help.

Watlow Series 988 Control Watlow's Series 988/989 Control is truly an innovation in the control field. The Series 988/989 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 the Series 988/989.

This control meets a wide variety of needs in the process industries. Its broad range of I/0 options allows control of virtually any process variable.

From the long list of product features, the Series 988/989's ability to provide single unit cascade control of a process is perhaps the most unique. The Series 988/989 is the only 1/8 DIN control with this feature. Other features include heater current monitoring, remote set point input, differential or ratio control. Valve control via slidewire feedback is another popular feature.

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

Download Watlow Series 988 Control Brochure (pdf)

Download Watlow EZ-Zone PM Spec Sheet (pdf)

Watlow Series 988/989 Retrofit Application
The Watlow recommended replacement for the Series 988/989 is the Watlow EZ-Zone PM Series. To find the recommended EZ-Zone PM replacement for your Watlow Series 988/989 Controller, please enter the part number of your existing Watlow 988/989 using the pull down menus below, answer the Cascade feature question, then click on the submit button below, the replacement part number and price will be shown on the next page.
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Do you use the Cascade feature on your 986B, 987B, 988B or 989B?

**Some models have non-standard overlays or preset parameters designated by the 11th and 12th digits. If the last two digits are AA, AB, AC, AD, AE, AF, AG, AH, BA, BC, BF, BH, BJ, BK, BL, BM, BP, BR, BV, BW, CJ, CM, CN, CP, CR, CS, CU, CY, DB, DH, DT, DU, EA, EB, EC, ED, EE, EH, FA, FB, FE, FF, FJ, FK, FP, FR, FS, FW, or GC use the RR default to find the retrofit controller. The retrofit controller may work in these applications if a standard controller with a Watlow logo and Red/Green displays are acceptable.

This page last modified on 7/1/2016

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