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Thermostats and Accessories

Thermostats and Accessories
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Thermostats and AccessoriesST10 and ST207 Watlow® offers several styles of sensors for use with flexible heaters. These sensors are available as preset or adjustable thermostats, thermocouples, thermistors, RTDs or thermal fuses. They can be integrally mounted (encapsulated in silicone rubber) to sense the temperature of either the part or the heater sheath. The thermostats can also be ordered separate from the heater, allowing direct control of your process temperature, if desired. Pre-Set Thermostats Several styles of non-adjustable, pre-set thermostats are available from Watlow....

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Thermostats and Accessories ST10 and ST207 Temperature Sensors (Continued) Separate Heater Accessories Available — Pre-Set Thermostats Separate From Heater These are offered to allow direct control of your process temperature, so you are not limited to controlling only the heater temperature when using catalog heaters. Pre-set thermostats are encapsulated in silicone rubber with standard 12 inch leads. The same temperature ranges, ratings and sizes are available on these thermostats. When ordering, add “S” prefix to the model number to indicate “separate” item. (Examples: ST-10 and ST-207)...

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Thermostat Ordering Information To order, complete the part number with the information below: Tstat Part # ST10 ST207 ST207E (sense air) Lead Insulation 1 = 1180 UL® R/C 2 = 1180 C-UL® R/C 4 = 3134 18 Ga. 6 = 1199 CSA 9 = Type E PTFE A = 1180 VDE B = 1199VDE Standard lead for T207 is 16 Ga. black. Standard lead for T10 is 22 Ga. black. * Customer specified length must be noted in inches when ordering.

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Thermostats and Accessories Bulb and Capillary Thermostats regulate temperature in non-critical applications. They sense temperature, within a preset range and cycle heaters on and off to maintain the set point. Thermostats may be mounted inside a terminal enclosure or remote mounted (separate from the heater assembly). If using a remote mounted thermostat, be sure to order the sufficient capillary tube length to permit installation. All Watlow® thermostats are normally closed circuit and either single-pole, single-throw (SPST) or double pole, single-throw (DPST). They can be used with or...

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Single Phase - InterconnectedSPST 1 L1 Three Phase Delta - Interconnected Single Phase - Pilot Duty Technical Information Application Hints Three Phase Delta - Pilot Duty 1 Phase Delta - Pilot Duty Pilot Duty Wiring (Continued) Three L1 Single Phase - Pilot Duty 1 L1 • Locate the thermostat where ambient temperatures SPST, 3-phase delta 1 L2 do not exceed 150°F (65°C). 1 L1 1 L1 1 L2 1 L3 • Mount the thermostat in an enclosure that is Single Phase - Interconnected 1 L2 compatible with the surrounding environment. SPST SPST 1 bulb in the media being • Immerse the entire sensing L2 1 L3 SPST...

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Thermostats with Enclosures 3¼ in. (83 mm) Technical Information (Continued) General Purpose Single- and Double-Pole Moisture Resistant Double-Pole 69⁄16 in. (166.7 mm) Moisture Resistant Single-Pole General Purpose Enclosure SPST or DPST Thermostat Part Number Moisture Resistant Enclosure SPST Thermostat Part Number View Above Shown Without Cover View Above Shown Without Cover Moisture Resistant Enclosure DPST Thermostat Part Number

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Technical Information (Continued)Thermostats Control Mode ® Fixed temperature rating Note: All thermostats certified by UL® and/or CSA for use in the United States and Canada.

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Thermostats and Accessories Bulb and Capillary Ordering Information Part Number Thermostat Part Number Enclosure (Remote Mount Only) Thermostat Part Number Note: See chart on previous page. Enclosure (Remote Mount Only) S = General purpose Moisture resistant Options Celsius dial scale (Double pole only) Chrome bezel (Double pole only) Liquid-tight brass fitting (3/8 in. - 18 NPT) Pilot light, 120V only available on moisture/explosion resistant and explosion resistant enclosures Example Part Number: 2 W LTB

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Protective wells isolate and protect thermostat bulbs and other temperature sensors (thermocouples, RTDs or thermistors). They allow inserting the sensing element sufficiently into the media being heated without being damaged. Steel or stainless steel protective wells are available in three lengths. They are supplied with 1/2 inch NPT mounting and 3/8 inch-18 NPT internal thread for mating to a liquid-tight bushing (LTB). To order, specify the appropriate part number from the table below. Protective Wells

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