Key features
The LWT300 series addresses several industries such as oil and gas, petrochemical, chemical, power generation, water and wastewater, pulp and paper, and marine. To meet these challenging applications, this series of instruments offers a wide range of configurations.
- Certified for potentially explosive atmospheres
- Temperature range: up to 204 °C (400 °F)
- Maximum process pressure: 207 bars (3000 psi)
- LevelExpert software for easy configuration, reliable surface detection and easy troubleshooting
- 2-wire powered and HART 7 communication model, with SIL2 (no redundancy), SIL3 (redundant configuration)
- MODBUS communication model
Specifications
Accuracy
- 2 mm (5/64 in) or 0.03%
Resolution
- 1 mm (3/64 in)
Temperature drift (digital)
- 0.001 %/°C
Range
- Maximum: 60.00 m (197 ft)
- Minimum: 0.05 m (0.16 ft) (with rod probe)
Update rate
- 5 Hz
Temperatures
Ambient operating
- –50 to 85 °C (–58 to 185 °F)
Process
- –50 to 204 °C (–58 to 400 °F)
Storage
- –50 to 85 °C (–58 to 185 °F)
Process seal type vs temperature rating
- Viton (–26 to 204 °C [–15 to 400 °F])
- Kalrez (–20 to 204 °C [–4 to 400°F])
- EPDM (–50 to 120 °C [–58 to 248 °F])
- Markez (–10 to 204 °C [14 to 400 °F])
Process pressure
- 207 bar at 38 °C/3000 psi at 100 °F
- 83 bar at 204 °C/1200 psi at 400 °F
Dielectric constant
- 1.4 (minimum)
Process viscosity
- Coaxial probe: 500 cp
- Single probe: 10,000 cp
Power supply
- 15.5 to 42 V DC (4–20 mA functionality)
- 21 to 42 V DC (HART functionality)
- 10.5 to 28.5 V DC @ 30 mW (max.) (Modbus units)
Power consumption
- 56 mW (@ 15.5 V DC, 3.6 mA)
- 903 mW (@ 42 V DC, 21.5 mA)
- 30 mW (Modbus units)
Line resistance
- 950 Ω (maximum @ 36 V, 21.5 mA)
Enclosure material
- Powder coated aluminum or 316 L stainless steel
Vibration resistance
- IEC 60068-2-64
- IEC 60068-2-6
EMI/EMC
- FCC part 15 subpart B, CISPR11
- IES61000-4-3
Protection class
- IP 66/68
- NEMA 4X/6P
Process connections
Threaded
- 3/4 inch (LWT310) or 1 1/2 inch (LWT320)
Flanged
- ASME flanges: from 1 1/2 to 8 inches, class 150 to 900
- DN flanges: from DN 20 to DN 200, PN25 to PN160
Display
- Integrated 128 × 64 pixels liquid crystal display (LCD) with through-the-glass (TTG) interface
- Push button display (does not allow waveform display on screen)
Communication protocols
- 4–20 mA analog output with HART 7 communication (currently allows measurement of level only, not interface)
- Modbus communication (allows measurement of level and interface)
Lifespan
- MTBF : 76 years
Wetted materials
- Duplex 2205 stainless steel
- Super duplex 2507 stainless steel
- C-276 alloy
- 304L stainless steel
- 316L stainless steel
Approvals
- CE
- FM/ATEX/IECEx hazardous area, flameproof, intrinsically safe methods of protection
- SIL 2 (no redundancy), SIL 3 (redundant configuration)
- CRN