Mercoid by Dwyer

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*** 800-876-0036 ***

Phone: 847-356-0566   Fax: 847-356-0747       E-Mail:

Mercoid Controls produces a broad range of pressure, temperature, and level controls for use in heavy industrial, petrochemical, and electrical utility plants. Established in 1916, Mercoid has been serving industry for over 80 years. Our joining with Dwyer Instruments, Inc.,combines over 150 years of experience to produce an even stronger and more resourceful company to serve your instumentation and control needs.We have over 3,000 products from Dwyer, Mercoid, W.E. Anderson, Proximity and Love Controls including the Merciod DA Series.


Click on product group below







Temperature Group

  Limit Controls - Series 16L
FM Approved, Large, Dual Display, Universal Input
  Liquid Temperature Controls - Series DA 36/37
Mercury or Snap Switch Operation

  Temperature Controllers - Series 2500
1/4 DIN Fully Programmable, Self-Tune® PID
  Temperature/Process Controllers - Series 16A
1/16 DIN, Universal lnput, Fuzzy Logic, Self Tune® PID
  Temperature/Process Controllers - Series 2600
1/4 DIN Self-Tune® PID, Fuzzy Logic Software




  Bi-Metal Air Temperature Switches - Series M-51
Double Adjustable, Heavy Duty, Universal Mounting, Automatic or Manual Reset
  Damper Position Switches - Series ML-51-153
Separate Low-High Setting, Universal Mounting, Spring Return
  Immersion Temperature Controls - Series FM
Visible Setpoint Adjustment, Adjustable Deadband, Monitor Liquids to 300°F (149°C)
  Two-Stage Temperature Controls - Series D-7435
Temperature Ranges to 550°F
  Pressure/Temperature Controls - Nomenclature Guide - Series D
  Remote Bulb Temperature Controls - Series D
  Temperature Controls - Bulb Selection - Series D


  Bimetal Thermometers - Series BT
2", 3" or 5" Dial, Dual Scale, ±1% FS Accuracy, External Reset
  Mini Infrared Thermometers - Model MIR1
Laser Sighting, Measure Temperatures Up to 600°F (315°C)
  Remote Reading Thermometers with Switch - Model RRT
3-1/4" Dial, Liquid Actuated Bulb and Capillary Type



  Iso-Verter® II Signal Conditioning Modules - Series SC4130/SC4151/SC4380
Accepts Virtually All Standard Process Signals
  Mini In-Line IR Sensors - Series MIL
Temperature Measurement System, Adjustable Emissivity, Field Selectable Outputs


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WARNING: Some of the products we sell can expose you to chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Contact your sales rep or go to for more information.

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M&M Control Service, Inc. does not represent or claim any affiliation, association, connection or approvals with or from any manufacturer unless stated. We fully acknowledge all trademarks and/or names which are pictured and/or listed throughout the M&M Control Service, Inc. Website.

(PowersTM, also known as, POWERS REGULATOR, MCC POWERS, POWERS-FIAT, POWERS PROCESS CONTROLS, CRANE POWERS and POWERS, a Watts Industries Company. The POWERS trademark is owned by Powers, A Division of Watts Water Technologies, Inc. M&M Control Service, Inc. Is a Stocking Distributor for PowersTM)

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