Overview
The FCI FLT93S is an insertion-type thermal dispersion flow and level switch part of the FlexSwitch series. FCI’s FLT93 Series are the most popularly installed heavy duty thermal dispersion flow and level switches, developed from more than 40 years of flow and level switch engineering. The FLT93S (Heavy Duty) model is a single instrument capable of detecting fluid flow and temperature, making it suitable for multi-parameter process monitoring.
Key Features
- Thermal dispersion sensing technology for reliable flow and level detection
- Dual-alarm configuration with two field-adjustable setpoints
- Relay contacts rated 6A @ 115/230VAC or 28VDC
- Two buffered voltage outputs for flow/level and temperature monitoring
- 316L stainless steel construction with corrosion-resistant design
- 1″ NPT pipe thread connection standard
- NEMA Type 4X explosion-proof rated enclosure available
Technical Specifications
Electrical Ratings:
- Power Supply: 120/230VAC 50/60Hz or 24VDC
- Relay Output: 6A @ 115/230VAC or 28VDC
- Control Circuit: Plug-in, socket-mounted with dual alarm relays
Physical & Connection:
- Connection: 1″ NPT (National Pipe Thread)
- Mounting: Insertion/process pipe immersion
- Material: 316L stainless steel (standard)
- Altitude Rating: Maximum 12,000 ft.
- Environmental: Indoor or outdoor rated
Configuration:
- Two field-adjustable alarm setpoints
- Built-in calibration circuit
- Dual buffered voltage outputs
Typical Applications
FLT93 instruments are found in continuous operation in the most demanding and critical process and plant applications, including oil and gas upstream and downstream, wastewater treatment, chemical operations, power plants, food and beverage, refineries, mining, and metals manufacturing. Common uses include:
- Flow detection and alarm in pipelines
- Liquid level monitoring in process vessels
- Media interface detection
- Temperature monitoring of flowing fluids
- Safety and process control interlocks
Compatibility & Replacements
Compatible With
- Standard industrial control systems with 115V / 230V AC relay inputs
- 24VDC power supply systems
- Process automation and SCADA platforms
- Safety instrumented systems (SIL 2 rated)
- Factory Mutual (FM) approved applications
Replaces / Drop-In Replacement For
- Earlier FLT93 series models with similar NPT connection and electrical specifications
- Contact FCI directly to verify compatibility with specific legacy part numbers
Works With
- Standard industrial relay logic and PLC input modules
- Analog 4-20mA temperature output monitoring systems
- Process control instrumentation networks
- Standard industrial wiring and control enclosures
