On-Line
Coal
Gas
Analyzer
KGD-MQ-521
For
On-Line
Measurement
of
Gas
Volume
Concentration
The
On-Line
Coal
Gas
Analyzer
KGD-MQ-521
is
designed
for
continuous
measurement
of
gas
volume
concentration
in
industrial
applications.
Product
Introduction
The
KGD-MQ-521
analyzer
utilizes
advanced
non-dispersive
infrared
(NDIR)
gas
analysis
technology
combined
with
long-life
electrochemical
sensing
and
MEMS-based
thermal
conductivity
technology.
This
system
provides
simultaneous
measurement
of
coal
gas
and
biogas
calorific
values
along
with
volume
concentrations
of
CO,
CO₂,
CH₄,
H₂,
O₂,
and
CₙHₘ
gases.
Key
Features
-
Comprehensive
gas
analysis:
Measures
volume
concentrations
of
multiple
gas
components
(CO,
CO₂,
CH₄,
H₂,
O₂,
CₙHₘ)
while
automatically
calculating
and
displaying
calorific
values
for
coal
gas
and
natural
gas.
-
High
precision
measurement:
Eliminates
cross-interference
between
measured
gases,
ensuring
accurate
results
unaffected
by
gas
sampling
flow
changes.
-
Automated
operation:
Features
professional
pre-treatment
solution
with
digital/analog
outputs,
enabling
real-time
monitoring
with
minimal
maintenance.
-
Durable
construction:
Constant-temperature
sensor
design
with
corrosion-resistant
materials
(stainless
steel,
PTFE)
ensures
long-term
reliability.
Technical
Specifications
Measurement
Component
|
CO/CO₂/CH₄/H₂/O₂/C₂H₂/C₂H₄/CₙHₘ/Calorific
Value
|
Measurement
Principle
|
CO/CO₂/CH₄/C₂H₂/C₂H₄/CₙHₘ:
NDIR;
H₂:
TCD;
O₂:
ECD
|
Measurement
Range
|
CO/CO₂/CH₄/H₂:
(0-100)%;
O₂:
(0-25)%;
C₂H₂/C₂H₄/CₙHₘ:
(0-10%)
(Optional)
|
Measurement
Accuracy
|
CO/CO₂/CH₄/H₂:
±0.25%;
C₂H₂/C₂H₄/CₙHₘ:
±0.25%
(Optional)
|
Linear
Error
|
CO/CO₂/CH₄/C₂H₂/C₂H₄/CₙHₘ:
±1%F.S.;
O₂/H₂:
±2%F.S.
|
Resolution
|
0.01%
|
Response
Time
|
T90<15s
(NDIR)
|
Power
Supply
|
100-240VAC,
100W
|
Communication
|
RS-485/RS-232,
(4-20)
mA
|
Additional
Features
-
Built-in
zero-adjustment
air
pump
for
automatic
calibration
-
Calorific
value
units
convertible
between
Kcal/m³
and
MJ/m³
-
Self-diagnosis
function
with
online
sensor
status
monitoring
-
LCD
display
for
real-time
data
visualization