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ARMTS3-HEATER
Stainless Steel Immersion Heater 2.5 in NPT Process Water Thermostat
Models In Stock
- Passivated Stainless Steel Wetted
- 3 Element Heater Design
- 208, 240, or 480 Vac, 3 Phase Power
- 3 to 18 kW
ARMTS3-HEATER
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Models In Stock
Product Overview
- Additional Features Integral Thermostat
- Form factor Screw Plug Immersion
- Heated Medium Water
- Number of Heating Elements 3
- Number of Phases 3
- Process Connection Material Stainless Steel
- Process Connection Size 2 1/2 in
- Process Connection Type NPT Male
- Series ID ARMTS3-HEATER
- Sheath Diameter 0.475 in
- Sheath Material Passivated Stainless Steel
- Thermostat Type Bulb, capillary
Supported Applications
The Omega ARMTS-3 Series consists of heavy-duty immersion heaters with integral thermostats, designed specifically for process water applications. These units feature a 3-element heater design and passivated stainless steel wetted parts to manage temperature in industrial fluid systems.
Operating Conditions & Performance
The series operates on 208, 240, or 480V; 3 phase power. Power ratings range from 3 kW to 18 kW with watt densities varying between 46 W/in² and 53 W/in² depending on the specific model configuration.
Temperature control is provided by an integral bulb and capillary thermostat available in two ranges:
- T-2 Temp Range: 60 to 250°F
- T-1 Temp Range: 0 to 100°F
Wetted parts utilize passivated stainless steel sheath elements with a diameter of 0.475 dia., connected via a 2½ NPT passivated stainless steel screw plug.
Safety and Control Notes
- The integral thermostat functions as a temperature control only; it is not a fail-safe device.
- An approved pressure or temperature control should be used with these heaters to assure safe operation.
- Models exceeding 48 amps are noted as Not UL Listed or CSA Certified and Not CSA NRTL/C Certified in specific configurations.
Configuration Options
The ARMTS-3 Series is configurable across power ratings, voltage designations, thermostat ranges, and enclosure types. The model number structure follows the format: ARMTS-<kW> - <Temp Range> - <Voltage Designation> - <Phase> - <Enclosure Type>.
Power and Voltage
- kW Ratings: 3, 4.5, 6, 7.5, 9, 12, 15, or 18 kW.
- Voltage Designation: Specify voltage in the model number (e.g., "240" for 240V or "480" for 480V).
Housing and Enclosure Options
- General Purpose: NEMA-1 rated enclosure.
- Type E2: Moisture resistant/explosion resistant enclosure (indicated by the "E2" suffix in model numbers).
Dimensions and Connections
- Overall Length (Dim. B): Ranges from 18 cm (7 in) to 119 cm (47 in), varying by kW rating.
- Cold Reference Length: 5 cm (2 in).
- Thermowell Length: Available as 15 cm (6 in) or 20 cm (7.875 in).
- Electrical Connection: Features two 1.5 NPT conduit hubs, with one side plugged.
Certifications and Approvals
The series carries the following approvals where applicable: MADE IN USA, SF, SR, UL, and NRTL/C (subject to amperage limits).
Key Product Differences
Variants within the ARMTS-3 Series are distinguished by power output, thermostat range code, voltage designation, and enclosure type.
- Thermostat Range Codes: Models include a "T1" suffix for the 0 to 100°F range or no suffix (standard) for the 60 to 250°F range. Some variants may also feature a "T2" designation.
- Enclosure Suffixes: The absence of an enclosure code indicates a general purpose NEMA-1 rated housing, while models with an "E2" suffix denote the moisture resistant/explosion resistant type E2 enclosure.
PDFs & Manuals
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