MTL5511 MTL Instruments Switch/Proximity Detector Interface

The MTLx511 enables a safe-area load to be controlled by a switch or proximity detector located in a hazardous-area

Hazardous-area inputs : Inputs conforming to BS EN60947–5–6:2001 standards for proximity detectors (NAMUR)

Hazardous-area inputs
Inputs conforming to BS EN60947–5–6:2001 standards for
proximity detectors (NAMUR)
Voltage applied to sensor
7 to 9V dc from 1kΩ ±10%
Input/output characteristics
Normal phase
Outputs closed if input > 2.1mA (< 2kΩ in input circuit)
Outputs open if input < 1.2mA (> 10kΩ in input circuit)
Hysteresis: 200µA (650Ω) nominal
Line fault detection (LFD) (when selected)
User-selectable via switches on the side of the unit. A line fault is
indicated by an LED. The channel output relay is de-energised if an
input line fault is detected.
Open-circuit alarm on if Iin < 50µA
Open-circuit alarm off if Iin > 250µA
Short-circuit alarm on if Rin < 100Ω
Short-circuit alarm off if Rin > 360Ω
Note: Resistors must be fitted when using the LFD facility with a contact input
500Ω to 1kΩ in series with switch
20kΩ to 25kΩ in parallel with switch
Safe-area output
Single pole relay with changeover contacts
Note: reactive loads must be adequately suppressed

Company Introduction

Great System In.(GSI) a name synonymous with Process Control Instrumentation and Electrical and Instrument and Solution Provider have established themselves as a Quality Leader since its inception in 1998 based at Hong Kong ( China ).

Great System In.(GSI) a name synonymous with Process Control Instrumentation and Electrical and Instrument and Solution Provider have established themselves as a Quality Leader since its inception in 1998 based at Hong Kong ( China ).

For more than 26 years, we have successfully executed many prestigious orders by supplying Sophisticated Electronic Instruments and Control Systems and HT Panel and LT and Panel. Indigenization of the instruments of our product range have been in hand with our commitment to the manufacture of safe, reliable and quality instrument. Our thrust today is in the field of microprocessor based instrumentation and control systems. A knowledge inspiring and skilled arena that we are in, we are staffed to meet the dictates of the field and thus can provide various control and monitoring software packages for Instrumentation and control.

Application Gallery

Power : Feed Water (Drum Level & DP across Drum Level), Furnace Vacuum, SH Steam Temp Stage I & II (L&R), Dearator Level, Condenser Hotwell Level and REC, HP Heater Level, LP Heater Level, Gland Seal Steam Pressure, Gland Steam Temperature, Thermal Load, FD, PA and Vapor Fan Control

Oil & Gas : Platform & Pipeline, Catalytic Cracking, Distillation Columns, Blending, Reactors

Pulp & Paper : Stock Preparation, Chest Box, Bleaching

Mining : Ore Dressing, Pyro/Hydro Processing, Electrolytic Refining, Crushers, Ball Mills, Classifiers, Filters, Flotation Devices, Magnetic Separators, Calcining Kilns, Digesters, Evaporators

Food & Beverages : Evaporators, Blending & Batching, Fermenting

Steel : Blast Furnaces, Continuous Casting, Reheating Furnaces, Biological Waste Treatment, Annealing Lines Sintherization

Water & Waste Water : Filter Backwash, Chemical Feed, Clear well Level, Finished Water Pumping, Remote Workstation Monitoring, Sludge Process, Sequencing Batch Reactor Plants, Rotating Biological Contactor Plant, Sludge Dewatering, Incinerator Control, Return and Waste activated sludge pumping