TM-TMO-HEATER

Supported Applications

The Omega TM/TMO Series consists of rugged screw plug immersion heaters designed for small tanks. The series is differentiated by media compatibility: Type TM features a high watt density copper sheath ideal for water heating applications, while Type TMO utilizes a lower watt density steel sheath intended for oil heating applications.

Operating Conditions & Performance

The TM/TMO Series offers tubular element designs with power ratings ranging from 350 to 1500 W. Electrical supply options include 120 or 240 Vac, single-phase operation. Watt density varies by type and model; Type TM models range from 46 to 86 W/in², while Type TMO models operate at approximately 20 to 21 W/in².

Physical dimensions vary by wattage and voltage configuration. The element diameter is specified as 0.315 (0.8). Overall length dimension A ranges from 8⅝ inches (22 cm) for the lowest power models up to 25⅝ inches (65 cm) for higher capacity units. Dimension B varies accordingly, with a minimum hole size requirement of 1-1/8 (2.86).

Performance Specifications by Type

• Type TM: High watt density copper sheath; available in power ratings from 350 W to 1500 W.
• Type TMO: Lower watt density steel sheath; available in power ratings from 350 W to 900 W.

Configuration Options

The series is configured with a dead front Nylon Twist Lock grounded plug and receptacle for electrical connection. Process connections are provided via a 1 NPT Steel Screw Plug, though Type TM models utilize a 1" brass screw plug while Type TMO models use a 1" steel screw plug.

Available Configurations

• Voltage: 120 Vac or 240 Vac.
• Phase: Single-phase (1).
• Housing Material: Nylon Twist Lock grounded plug with receptacle.
• Screw Plug Material: Brass for Type TM; Steel for Type TMO.

Key Product Differences

The primary distinction between the two series lies in sheath material and watt density, which dictates media suitability. Type TM models (e.g., TM-1036G/120 through TM-1415G/240) are constructed with copper sheaths for water service. Type TMO models (e.g., TMO-1036G/120 through TMO-1091G/240) employ steel sheaths optimized for oil.

Model numbers follow the format -, with specific examples including TM-1036G/120 (350 W, 120V), TMO-1051G/120 (500 W, 120V), and higher capacity variants such as the TM-1415G/240. Weights range from 14 to 22 oz depending on the specific model configuration.