توضیحات
دستگاه مانیتورینگ چهار کاناله گاز برند msa مدل ۶۱۰A
(MSA Brand Four Channel Combustible Gas monitor Model 610A)
Description
The Model 610A Controller is a four-channel system designed to continuously monitor for potential explosive concentrations of most combustible gases/vapors.
The system operates in the range of 0-100% LEL (Lower Explosive Limit) and is calibrated for a particular gas or vapor.
The system consists of four remote sensing assemblies and a solid-state controller.
The controller consists of four independent channels, each having its own control circuitry.
The sensors are monitored independently (i.e. they are not scanned, nor are the signals summed).
The 610A features a digital display of gas concentrations in % LEL (0-99%) for each channel.
Calibration of each channel is done independently with alarm relays disabled while in this mode.
Normally, only a periodic calibration check is needed to assure dependable performance.
The 610A has a variety of relay options, such as normally energized or de-energized high and low
alarms and latching or non-latching high and low alarms.
The malfunction relay circuitry is normally energized.
These relays may be discrete for each channel or common to all channels.
Also included as an option is independent low and high alarm settings for each channel.
Features
Four Independent Channels
Low power consumption
High visibility LED status indicators
Variety of relay options
Adjustment-free calibration
Low cable costs
Benefits
Maximum reliability
Low operating costs
Provides visual indication of fault and alarm status at the detector location
Provides choice to meet specific customer requirements
Lower calibration costs
Lower installation costs
Sensor Elements
General Monitors’ catalytic beard sensors are designed for reliable performance and long life.
Each sensor must undergo extensive burn-in and rigid quality control procedures before shipment.
The sensors consist of two catalytic bead elements in a balanced Wheatstone bridge circuit.
These low temperature catalytic bead sensing elements require minimal sensor excitation current, greatly increasing sensor life.
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