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Flame detectors available with Hart protocol

27 October 2009

The FL3100H UV/IR and FL3101H UV flame detectors from General Monitors are now compatible with the Hart communication protocol. The FL3100H and FL3101H flame detectors are designed to detect fires over a wide field of view and provide alarm outputs directly from the detector while maintaining false alarm immunity.

Flame detectors available with Hart protocol
Flame detectors available with Hart protocol

The Model FL3100H detects fires by monitoring in both the ultraviolet (UV) and infrared (IR) spectral ranges, making it highly immune to false alarms. The Model FL3101H monitors only the ultraviolet (UV) spectral range for optimized speed of response. Both devices feature continuous optical path monitoring (COPM), which ensures the FL3100H Series offers exceptional fire protection.

The FL3100H and FL3101H operate over a broad temperature range and feature a 4-20 mA stepped output, which is the industry standard for alarm and fault indication. Each device includes three SPDT high current programmable relay outputs that provide immediate and time delayed outputs for alarm, warn and fault conditions. They also include an RS-485 serial output with Modbus RTU protocol for linking up to 128 detectors in series or 247 with repeaters. The RS-485 and Hart outputs provide status, alarm, fault, and other information for operation, troubleshooting, or programming of the units. Since Hart signals are carried over the same wiring as is typically used for conventional analog instruments, no rewiring is required.

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