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Series-TTE
Explosion-Proof RTD Temp Transmitter, -30 to 250 °F, Easy Adjust, Offshore HVAC
Models In Stock
- FM approved for Class I, Groups B, C, D; Class II, Groups E, F, G classified explosive environments
- Optional LCD
- Output span selected from seven common ranges or user determined
Series-TTE
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Models In Stock
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Product Overview
- Applications Boilers, Oil, Refrigeration, Refrigeration Equipment
- Construction Type Well Probe
- Current Output 4 to 20 mA
- Electrical Connection 1/2 in NPT female Conduit with Screw Terminal block
- Enclosure Ratings Hazardous Location Rated
- Enclosure Ratings Note Enclosure Rating: Weatherproof NEMA 4X (IP66) and Explosion-proof. Listed with FM for Class I, Division 1, Groups B, C and D, and dust-ignitionproof for Class II, Division 1, Groups E, F and G and Class III atmospheres. ATEX Certified: 2813 II 2 G Ex db IIC T6...T4 Gb, 2813 II 1 D Ex ta IIIC T111°C Da, T6 Process Temp ≤80°C, Temperature Class T5 Process Temp ≤95°C, Temperature Class T4 Process Temp ≤120°C as defined on nameplate. EUtype Cerificate No.: EMT17ATEX0021 X. ATEX Standards: EN IEC 60079-0, EN 60079-1, EN 60079-31. IECEx Certified: For Ex db IIC T6...T4 Gb, Ex ta IIIC T111°C Da, T6 Process Temp ≤80°C, Temperature Class T5 Process Temp ≤95°C, Temperature Class T4 Process Temp ≤120°C as defined on nameplate. IECEx Certificate of Conformity: Element IECEx EMT 17.0007X; IECEx Standards: IEC 60079-0, IEC 60079-1, IEC 60079-31. UKCA Ex Certified for: 0518 II 2 G Ex db IIC T6...T4 Gb / II 1 D Ex ta IIIC T111°C Da, T6 process temp ≤ 80°C, T5 process temp ≤ 95°C, T4 process temp ≤ 120°C. UKCA Ex Certificate of Conformity: EMA22UKEX0066X. UKCA Ex Standards: EN IEC 60079-0, EN 60079-1, EN 60079-31.
- Materials, Wetted 316 Stainless Steel
- Measurement Type RTD
- Number of Wires 2
- Operating Temperature, Max 158 °F
- Operating Temperature, Min -4 °F
- Output Detail 4-20 mA (2-wire loop powered)
- Output Signal Current
- Pressure Limits Up to 2000 psi
- Process Connection Size 1/2 in
- Process Connection Type NPT Male
- Process Temperature, Max 250 °F
- Process Temperature, Min -30 °F
- Protection Explosion-Proof
- Response Time 250 ms
- Sensor Type Pt1000
- Series ID Series-TTE
- Supply Power Type DC
- Supply Voltage 10 to 35 Vdc
- Thermal Effects ± 0.02%/°C max
- Transmitter Accuracy Transmitter: ± 0.1%, Probe: ± 0.3%
- Weight 1134 g
Supported Applications
The Dwyer Series TTE Explosion-Proof RTD Temperature Transmitter is designed for hazardous temperature measurement applications. The series supports use in refrigeration, building automation, commercial hot water heaters, boilers, and water chillers.
Operating Conditions & Performance
The transmitter measures process temperatures from -30 to 250°F (-34.4 to 120°C) using a Pt1000 sensor (DIN 0.00385). Accuracy is specified as Transmitter ±0.1% FS and Probe ±0.3% FS, with thermal drift effects of ±0.02%/°C max. The device operates in ambient conditions from -4 to 158°F (-20 to 70°C) and features a response time of 250 ms.
Configuration Options
The Series TTE offers configurable temperature ranges via an internal dip switch, including seven pre-programmed options or a user-settable range between -30 to 250°F with a minimum span of 40°F. The series supports the following configurations:
- Output Signal: 4-20 mA (2-wire loop powered) on a power supply of 10-35 VDC.
- Housing & Enclosure: Weatherproof NEMA 4X (IP66) and explosion-proof. Listed with FM for Class I, Division 1, Groups B, C and D; dust-ignitionproof for Class II, Division 1, Groups E, F and G; and Class III atmospheres.
- Approvals: ATEX Certified (CE 2813), IECEx Certified, UKCA Ex Certified, and FM approved. Certificates include EU-type certificate No.: EMT17ATEX0021 X, IECEx Certificate of Conformity: Element IECEx EMT 17.0007X, and UKCA Ex Certificate of Conformity: EMA22UKEX0066X.
- Process Connection: 1/2" male NPT or 1/2" male BSPT with wetted materials in 316 SS. The probe stem length ranges from 2" to 18" depending on the model, and the pressure rating is 2000 psi (137.9 bar).
- Electrical Connection: Terminal block with 6 terminals; conduit connection via 1/2" female NPT or M20.
- Display Option: Optional 2 lines X 8 character LCD display is available on select models (e.g., TTE-104-W-LCD).
Pre-programmed Temperature Ranges
The following ranges are selectable via dip switches 2, 3, and 4:
- 40 to 90°F (4.4 to 32.2°C)
- -20 to 140°F (-28.9 to 60°C)
- 0 to 100°F (-17.8 to 37.8°C)
- 30 to 240°F (-1.1 to 115.6°C)
- 32 to 212°F (0 to 100°C)
- 32 to 122°F (0 to 50°C)
- -30 to 65°C (-1.1 to 18.3°C) — Note: Source lists this range with mixed units as printed.
Key Product Differences
The series includes models with and without the optional LCD display, indicated by the "-LCD" suffix in part numbers (e.g., TTE-104-W vs. TTE-104-W-LCD). Stem lengths vary from 2" to 18", corresponding to model codes such as -04 through -18. Units without a specific '2' suffix following the base series name are noted in documentation as not being directive 2014/34/EU (ATEX) Compliant for use in potentially hazardous atmospheres in the EU, though they may be CE marked for other directives.
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