Immersion Temperature Control- Series FM
Visible setpoint adjustment, adjustable deadband
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.
| Maximum Pressure: | Copper well - 200 psig @ 300°F 304SS well - 900 psig @ 300°F |
|---|---|
| Maximum Bi-Metal Temperature: | 375°F |
| Process Connection: | ¾" NPT |
| Electrical Rating: | 4A @ 120V, 2A @ 240V, both AC & DC, 1/8 HP @ 120VAC or 240VAC. |
| Switch Type: | Tilting mercury type |
| Wiring Connections: | Three screw type: common, normally open and normally closed. (SPDT) |
| Conduit Opening: | ½ inch conduit |
| Set Point Adjustment: | High and Low set points set via pointers on (°F) calibrated dial |
| Housing: | Heavy gauge steel case with glass window |
| Well Material: | Copper or Type 304 stainless steel - see chart |
| Weight: | 3 lbs. |
| Installation: | Well must be horizontal, window vertical |
| Cooper Well Model Number |
Type 304SS Well Model Number |
Operating Temperature Range |
Deadband | Well Dimension | ||
|---|---|---|---|---|---|---|
| Min | Min | a | b | |||
| FM-437-153-3515 FM-437-153-3516 FM-437-153-3510 FM-437-153-3511 FM-437-153-3528 FM-437-153-3529 |
FM-437SS-153-3515 FM-437SS-153-3516 FM-437SS-153-3510 FM-437SS-153-3511 FM-437SS-153-3528 FM-437SS-153-3529 |
40-200°F 40-200°F 80-240°F 80-240°F 160-300°F 160-300°F |
15 15 15 15 18 18 |
160 160 160 160 140 140 |
2 7/8" 4 ½" 2 7/8" 4 ½" 2 7/8" 4 ½" |
2 3/8" ¾" 2 3/8" ¾" 2 3/8" ¾" |
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-(___).