SmartLine Level Transmitter uses guided wave radar (GWR) technology and can measure the level of a wide range of liquid products on a large variety of installations within the stated pressure and temperature range. It can be deployed at blending tanks, distillation columns, process tanks, separators, solid silos (inventory) and storage tanks. It does not require calibration or commissioning upon installation, and can measure liquid interface with or without an air gap. Additionally, the level meter can measure the level and interface simultaneously, and is capable of measuring media with a dielectric constant of 1.4 or greater. A variety of rigid and flexible probes allow measurement in silos and tanks up to 50 m (164 ft) high. SmartLine Level Transmitter offers:
- A new validation tool to avoid costly errors upfront by validating the level transmitter against the process tank
- A joint, online collaborative engineering session with Honeywell level experts right at users’ desktop
- Modular design: Some modules are shared with SmartLine pressure and temperature transmitters, further reducing inventory and enhancing flexibility
- Rich, advanced display and local configuration capabilities: In addition to configuring with any handheld device using the new DTMs, users can configure the transmitters through externally accessible buttons, even in an intrinsically safe environment.
- Integration with all control systems: This includes seamless integration with Experion® PKS that provides extended diagnostics, maintenance status display and transmitter messaging.
SmartLine Level Transmitters are used in applications where technologies such as capacitance, hydrostatic level or ultrasonic level measurements may have been used earlier. Immune to changes in conductivity, density, pressure and temperature, the level meters offer better reproducibility and accuracy than these other technologies. Since the signal travels up and down the probe, it is also unaffected by the angle of repose of a granular material.
Measurement Technology
Uses guided‑wave radar (GWR): microwave pulses travel down a probe (rigid or flexible), reflect at the liquid surface, and return.
Can measure level and interface (liquid / interface measurement) simultaneously.
Works with media dielectric constant ≥ ~1.4.
Performance / Accuracy
Accuracy: ± 3 mm or ± 0.03% of measured distance (whichever is greater).
Repeatability: ± 1 mm.
Measuring range: up to 50 m (164 ft), depending on probe.
Process Conditions
Process temperature range: –60 °C to +450 °C.
Process pressure range: –1 bar to 400 bar.
Wetted materials: options like 316L stainless steel and Hastelloy C-276.
Signal Output & Communication
4‑20 mA (two-wire) output.
Digital communication: HART v7 and FOUNDATION™ Fieldbus.
External zero, span, and configuration via push-buttons.
Safety & Reliability
Integral dual-seal design for safety and compliance (ANSI/NFPA 70‑202, ISA 12.27.01).
On-board diagnostics: health monitoring built in.
Functional safety capable: SIL 2 / SIL 3 options.
Design / Integration
Modular construction: modules can be shared with other SmartLine instruments (pressure, temperature) — lowers spare‑parts cost.
Advanced local display: has a rich display that supports multiple screens (e.g., process variable, bar graph, trends) and configuration buttons.
Polarity‑insensitive terminals → reduces wiring errors.
SmartLine Application & Validation Tool: helps users validate the correct transmitter for their tank / process installation.
Integration with Honeywell Experion PKS: extended diagnostics, transmitter messaging, maintenance‑status display.
Industrial Safety Services
Robustness / Lifecycle
Loop-powered (2‑wire) design simplifies installation.
Tamper notification to enhance security.
Temperature compensation for stable readings over a wide temperature range.
