Series-TConfiguration

Supported Applications

The Dwyer Series T Temperature Sensor Assemblies with Thermowells are designed for temperature measurement in industrial processes. The series provides a configurable solution where the sensor sheath is constructed of 316 SS regardless of the specified thermowell material. All elements within the assembly are spring-loaded to ensure positive contact inside the thermowell, and the thermowells are described as non-lagging.

Operating Conditions & Performance

The Series T documentation does not specify explicit measurement ranges, accuracy classes, response times, or operating temperature limits. The sensor sheath material is fixed at 316 SS for all configurations. Thermowell materials vary by selection and include options such as 304 SS, 316 SS, Brass, Carbon steel, or None (for replacement sensors). No pressure ratings, burst pressures, enclosure ratings, or environmental limits are provided in the source data.

Configuration Options

The series supports a wide range of configurations defined by an alphanumeric model number guide: T - <SENSOR TYPE> - <WELL MATERIAL> - <TAPER/BORE> - <EXTENSION> - <ELEMENTS> - <HEAD> - <PROCESS CONNECTION>. Available options include:

Sensor Types

• Thermocouples: J, K, E, T
• RTDs (100 Ω): 6 (3-wire 0.00385 Ω/°C), 4 (3-wire 0.00392 Ω/°C)
• RTD (1000 Ω): Z (3-wire 0.00385 Ω/°C)

Thermowell Materials

• Code 0: None
• Code 1: 304 SS
• Code 2: 316 SS
• Code 3: Brass
• Code 4: Carbon steel

Taper/Bore Configurations

• 0: None
• 1: Step/0.260
• 2: Straight/0.385
• 3: Taper/0.260
• 4: Taper/0.385
• 5: Straight/0.260

Extensions

• 1, 4, 7: Steel with 1/2 NPT (1 in hex, 4 in nipple, or 4 in union)
• K, N, S: 316 SS with 1/2 NPT (1 in hex, 4 in nipple, or 4 in union)

Element Configurations

• 1: Single (ungrounded for RTD)
• 2: Dual (ungrounded for RTD)
• 3: Single (grounded)
• 4: Dual (grounded)

Housing Heads

• 0, 1: Aluminum screw or snap cover
• 2, 3: Polypropylene snap or screw cover
• 5: 304 SS screw cover

Process Connections (Nominal/Reduced O.D.)

• 1: 1/2" NPT (5/8" to 1/2" step)
• 4: 3/4" NPT (3/4" to 1/2" step)
• 6: 1" NPT (7/8" to 1/2" step)
• 7, 9: 3/4" NPT tapers (7/8" to 5/8" or 49/64")
• 8, A: 1" NPT tapers (1-1/16" to 5/8" or 49/64")
• B: 1/2" NPT (5/8" straight)
• E: 3/4" NPT (3/4" straight)
• D: 1" NPT (7/8" straight)
• 0: None* (*For replacement sensors, specify '0' for well material, taper/bore, and process connections.)

Key Product Differences

Variations within the Series T are distinguished by sensor type (Thermocouple vs. RTD), thermowell construction material, bore geometry (step, straight, or tapered), extension length and material (Steel vs. 316 SS), element grounding status, head cover style/material, and process connection size/geometry. The model number guide explicitly defines these distinctions through specific codes for each position in the part number.