Products / Fixed Gas Monitors
Special Features
4 – 20mA Input.
Features Self Integrity Check.
Fast and Accurate Response.
Solid State Electronics.
Two Alarm Levels.
Recorder Output.
Un – Attended Operation.
Modular Plug In Design Including Modular.
Power Supply.
Compatible with All Types of Transmitter.
220 Volts / or DC Operation.
The Model 8420 X is a microprocessor based fixed gas detection system designed to accept the input from remotely located Oxygen, Combustible or Toxic detector transmitters. The system is designed to provide continuous round the clock monitoring
Model 8420
for a variety of common atmospheric hazards. It utilizes a point to point writing architectures whereby each detector head, alarm / shutdown device
and remote system is individually wired to the control unit. This is best choice for small systems,
typically less than 20 points, where the
sensors are located in relative close proximity to the central
control unit.
The system is designed for easy expansion by means of plug in sensor modules. Remote 98 series
transmitters are available in non explosion proof or explosion proof versions. Both versions can be
with or without digital readouts.
The systems includes built in digital readouts at the controller. Other standard features include two
independently adjustable alarm set points per channel, bright LED alarm light indicators and relay
contacts for fault, low and high alarm conditions; common and channel specific 4-20mA analog
outputs for communicating sensor data to other systems.
Endee Model 8420 X rack / panel mount control enclosure along with Micro controller based digital
control modules is designed to serve as a host control system for remote mount gas detection sensor
transmitters. The single channel modular designed can be configured for any combination of gases.
All control modules are plug in front panel accessible for easy maintenance and repair. A "Blank Plate"
can be installed on any unused channel until that channel is needed at some future date.
The Model 8420 X includes an integral and modular power supply, three digit indicator serves as both
a power on indicator and a direct reading display of the gas concentration. Alarm set points are
software adjustable in 1 PPM / % increments across the range of detection. The reset switch reseta
all alarm relays.
Specifications
Input
4-20 mA current Loops
Displays
Red LED - 3 digit 7 segment for gas level.
Indications
Low alarm. High alarm, Fault
Alarm Reset
Is accomplished via an Integral or remote switch.
Electrical Classifications
NEMA 1 panel mount
Capacity
Up to 8 single channel control modules
Power Input
220 VAC Standard / 24 VDC Optional
Power Consumption
<5 watts per channel
(includes gas sensor transmitter and control module)
Outputs
Linear analog 4-20 mA DC,
24 volt DC,
Serial Rs-485/ 232,
Discrete relays for fault, low and high alarm
Operating Temperature
-10°Cto55°C
Humidity Range
0 to 95% RH, non-condensing
Warranty
One year except batteries, Sensor one year in air.
Specifications
Gases
Ranges
Gases
Ranges
Hydrogen
0- -100 to 2000 PPM
Hydrogen Sulphide
0-5 to 2000 PPM
Chlorine
0- • 3 to 2000 PPM
Nitric Oxide
0-100 1000 PPM
Bromine
0- • 3 to 2000 PPM
Nitrogen Dioxide
0-30 to 100 PPM
Fluorine
0- •1 to 10 PPM
Ammonia
0-300 PPM
Hydrogen Chloride
0- •5 to 15 PPM
Org. Solvents/Vapours
Depending on Solvents
Hydrogen Fluoride
0- • 5 to 15 PPM
Oxygen
0 - 30% to 100%
Hydrogen Cyanide
0 •10 to 100 PPM
LPG/CNG/H2
0-100%LEL
Carbon Dioxide
0- • 05% to 20%
Combustible Gases
0 -100% V/V
Carbon Monoxide
0- •50 to 4000 PPM
Sulphur Dioxide
0- •10 to 2000 PPM
The above Parameter and Ranges are only indicative. Endee will build up and supply the analyser with
Parameters, range and features to any Practical Configuration.
Note : Specifications and Features wil 1 vary with application. The above are established and
validated during design, but are not to be construed as test criteria
for every product. Due to endee's commitment to research, design and product improvement,
specifications are subject to change without notice