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Series FM Immersion Temperature Control |
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| Compact and low cost, model FM-437 employs a bimetal element inside an immersion well. Instrument is detachable form the well, allowing maintenance without draining system. Visible calibrated dial reduces "start up" time and speeds set point changing. Contacts are hermetically sealed and mercury wetted. High current (up to 17A) capacity switches available on special order. |
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| PHYSICAL DATA |
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Maximum Pressure: |
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Copper well - 200 psig @ 300°F
304SS well - 900 psig @ 300°F |
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Maximum Bi-Metal Temperature: |
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375°F |
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Process Connection: |
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¾" NPT |
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Electrical Rating: |
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4A @ 120V, 2A @ 240V, both AC & DC, 1/8 HP @ 120VAC or 240VAC. |
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Switch Type: |
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Tilting mercury type |
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Wiring Connections: |
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Three screw type: common, normally open and normally closed. (SPDT) |
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Conduit Opening: |
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½ inch conduit |
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Set Point Adjustment: |
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High and Low set points set via pointers on (°F) calibrated dial |
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Housing: |
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Heavy gauge steel case with glass window |
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Well Material: |
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Copper or Type 304 stainless steel - see chart |
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Weight: |
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3 lbs. |
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Installation: |
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Well must be horizontal, window vertical |
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Cooper Well
Model Number
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Type 304SS Well
Model Number
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Operating
Temperature Range
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Deadband
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Well Dimension
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Min.
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Min.
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a
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b
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FM-437-153-3515
FM-437-153-3516
FM-437-153-3510
FM-437-153-3511
FM-437-153-3528
FM-437-153-3529
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FM-437SS-153-3515
FM-437SS-153-3516
FM-437SS-153-3510
FM-437SS-153-3511
FM-437SS-153-3528
FM-437SS-153-3529
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40-200°F
40-200°F
80-240°F
80-240°F
160-300°F
160-300°F
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15
15
15
15
18
18
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160
160
160
160
140
140
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2 7/8"
4 ½"
2 7/8"
4 ½"
2 7/8"
4 ½"
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2 3/8"
¾"
2 3/8"
¾"
2 3/8"
¾"
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| SUGGESTED SPECIFICATIONS |
| Temperature switches shall be immersion type with (copper)(type 304 stainless steel) well. Switches shall be separable from well and shall be repairable without shutting down process. Bimetal element shall operate hermetically sealed mercury switch. Switches shall have °F calibrated dial and two pointers indicating set and reset points. Switches shall require no power supply. Switches shall be Mercoid Model No. FM-437-(___). |
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| Series 860 Line Voltage Thermostats |
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| Heavy duty and reliable, Model 860 Line Voltage thermostat is designed for direct control of motors operating HVAC equipment in industrial environments. Hermetically sealed mercury switch resists dust, dirt, grease and moisture. Cadmium plated steel and brass mechanism resists corrosion. Set point is easily adjustable via knurled knob located on the side of the unit. Knob may be removed to prevent tampering. Contacts rated up to 17A available on special order. |
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| PHYSICAL DATA |
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Temperature Limits: |
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-10 to 140°F |
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Electrical Rating: |
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See Chart |
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Deadband: |
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Approximately 2-4°F |
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Wiring Connections: |
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Standard - screw type terminals, explosion-proof pigtail leads for connection inside junction box |
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Conduit Opening: |
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Unit mounts on standard wall switch box |
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Set Point Adjustment: |
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Removable knob at side of unit |
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Housing: |
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Plastic housing. Thermostat mechanism is located in front of housing for better sensitivity; mechanism is covered by plastic cover |
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Actuation: |
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Liquid filled brass bellows |
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Installation: |
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Vertical |
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Weight: |
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1.5 lbs. |
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Model Number
SPDT1
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Model Number
SPDT2
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Operating
Range, °F
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Housing
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860-153-61
860153-62
860-153-63
860-153-64
860-153-65
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860-2-61
860-2-62
860-2-63
860-2-64
860-2-65
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25-60
38-70
56-80
65-90
80-110
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Indoor
Indoor
Indoor
Indoor
Indoor
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1 Three terminals: common, normally open, normally closed, 4A @ 120 V, SA @ 240V, (AC or DC). 1/8 HP @ 120/240 VAC 1Ø (Not U.L. or C.S.A. listed)
2 Two terminals: common, normally closed (opens on temperature rise). 10A @ 120V, 5A @ 240V, AC or DC. ¾ HP @ 120/240 VAC 1Ø ¼ HP @ 120/240 VDC. Normally open (instead of standard normally closed contact) is available on special order. |
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| SUGGESTED SPECIFICATIONS |
| Thermostats shall have heavy duty contacts suitable for 120/240V operation. Contacts shall be hermetically sealed and mercury wetted. Units shall include integral thermometer. Enclosures shall be (indoor)(explosion0proof) type. Units shall be bellows actuated and shall have removable set point adjust knob. Units shall be Mercoid Model 860. |
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