Mercoid Controls

Mercoid Controls

Mercoid Controls
Mercoid Controls

Mercoid Controls came into existence when a young independent inventor with an innovative switch design needed a manufacturer for his idea. He found an interested instrumentation manufacturer, The Federal Gauge Company of Chicago, Illinois, that had extensive Bourdon tube experience dating back to 1917. Mercoid’s first control was a Bourdon tube pressure switch that was released in 1921. The switch with its ingenious design became an instant success and has lasted over eighty years through its evolution into the present D Series Pressure Control. The D Series is still the premier adjustable pressure switch on the market today.

The company was at the forefront of controls technology during the foundation of the heating and refrigeration industries, which drove expansions into temperature and level controls. Mercoid innovated mercury switches, which is where the namesake arrived. Today Mercoid is much more than mercury switches with almost all products being available with snap switches. Mercoid has continued the innovative spirit as it has expanded into many new products including level transmitters and digital pump controllers.

 

Level Products by Mercoid Controls


Mercoid Submersible Level Switches

Series PBLT2Series PBLT2 & PBLTX
Submersible Level Transmitter. Perfect for Sludge and Slurries, Lightning Protected, Intrinsically Safe
Series SBLT2Series SBLT2 & SBLTX
Submersible Level Transmitter. Perfect for Ground Water and Wells, Lightning Protected or Intrinsically Safe
Series MBLTSeries MBLT
Miniature Submersible Level Transmitter. Only 0.63" in Diameter. Perfect for Wells and Boreholes. Up to ±0.10% Accuracy, 8 V Power Options
Series FBLTSeries FBLT
Flush Tip Submersible Level Transmitter. Perfect for Sludge and Slurries, Lightning Protected, ±0.25% Accuracy



Mercoid Float Level Switches

Series 391/393/394Series 391/393/394
Side Mounted-Chamber Type Level Control. Compact, Low Cost, Hermetically Sealed Snap Switch Option
Series 102/1102Series 102/1102
Flanged Chamber Type Level Control. Operating Pressures to 300 PSIG
Series 500Series 500
Insertion Type Level Control. Adjustable Deadband, Weatherproof Enclosure
Series 123/125Series 123/125
Boiler Water Level Control. Heavy Duty, Cast Iron Chamber
Series 201/203/204Series 201/203/204
Side Mounted-Chamber Type Level Control. Operating Pressures to 500 psig, 34 bar, Hermetically Sealed Snap Switch Option
Series 225/227/228Series 225/227/228
Flanged Chamber. Adjustable Deadband 12" to 24", Pressure to 1000 psig (68.9 bar),
Temperature to 475°F (246°C), Hermetically Sealed Switches
Series 211/213/214Series 211/213/214
Flanged Chamber Level Control. External Mount, Pressure to 450 psig (31 bar), Temperature to 500°F (260°C)
Series 251/253/254Series 251/253/254
Welded Chamber Level Control. External Mount Pressure to 1250 psig (86 bar), Hermetically Sealed Switches, Temperature to 750°F (400°C), Explosion-Proof Housings
Series 291/293/294Series 291/293/294
Welded Chamber Level Control. Single Stage, Low Cost, Hermetically Sealed Snap Switches
Series 401Series 401
Top Mount Float Type Level Control. Single or Two Stage for Pump or Alarm, Depth to 12', Specific Gravity to 0.50
Series 301Series 301
Top Mount Float Type Level Control
Single Stage for Alarms, Depth to 12 ft.
Series 221/223/224 Series 221/223/224
Flanged Chamber Level Control. External Mount, Pressure to 1000 psig (69 bar) and Temperature to 475°F (246°C)
Series 1211/1213/1214Series 1211/1213/1214
Flanged Chamber Level Control. External Mount, Pressure to 450 psig (31 bar), Temperature to 500°F (260°C)
Series 1251/1253/1254Series 1251/1253/1254
Welded Chamber Level Control. Min. Specific Gravity 0.40, Pressure to 1250 psig (86 bar), and Temperature to 500°F (260°C)
Series 215/217/218Series 215/217/218
Flanged Chamber Level Control. Adjustable Deadband 12" to 24", Pressure to 450 psig (31 bar), Temperature to 500°F (260°C)
Series 1221/1223/1224Series 1221/1223/1224
Flanged Chamber Level Control. External Mount, Pressure to 1000 psig (69 bar), Temperature to 475°F (246°C), Minimum Specific Gravity 0.40
1261/1263/12641261/1263/1264
Welded Chamber Level Control. External Mount, Pressure to 1750 psig (121 bar), and Temperature to 500°F (260°C)
Series 205Series 205
Welded Construction. External Mount Pressures to 1250 psi (86 bar) at Temperatures to 650°F (343°C), Optional Explosion-Proof Enclosures, Hermetically Sealed Switches
Series 1241/1243/1244Series 1241/1243/1244
Flanged Chamber. External Mount, Pressure to 1440 psig (99 bar), Hermetically Sealed
Switches and Temperature to 475°F (246°C)



Mercoid Displacer Level Switches

Mercoid Series 190Mercoid Series 190
Single Stage Top Mount Displacer Type Level Control. Fixed or Adjustable Deadband, For Pumps or Alarms
Mercoid Series 195Mercoid Series 195
Two Stage Top Mount Displacer Type Level Control. Fixed or Adjustable Deadband, For Pumps or Alarms



Mercoid Pressure Products

Mercoid Series EDA Mercoid Series EDA

Electronic Pressure Controller

2 Switches, Indicating Gauge, and Transmitter in One Package

General Purpose
General Purpose
Mercoid Series DA / DS

Bourdon Tube Pressure Switches

Pressure Ranges to 8000 PSI