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TEC
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Specification subject to change without notice.
Printed in USA 131119
Polygard® is a registered trademark of MSR
MGC2-20
PolyGard
®
Multi-Point Controller
User Manual - MGC2-20
Page 16
3.6.2 Selection Type
Assign sensor Type to active transmitters.
Symbol Description
Setting
Status Type
Unit
Measuring
range
1
SP 01
Sensor point
NH3
Type
NH
3
CO
Ex
NO
NO
2
NH
3
O
2
CO
2
SO
2
H
2
S
CL
2
ETC
VOC
R401
R402
R408
R409
R404
R416
R502
R410
R411
R11
R123
R134
R22
TEM
RH
Carbon monoxide
Combusible gas
Nitrogen oxide
Nitrogen dioxide
Ammonia
Oxygen
2
Carbon dioxide
Sulphur dioxide
Hydrogen sulphide
Chlorine
Ethylene oxide
Air quality
Refrigerant gas
Refrigerant gas
Refrigerant gas
Refrigerant gas
Refrigerant gas
Refrigerant gas
Refrigerant gas
Refrigerant gas
Refrigerant gas
Refrigerant gas
Refrigerant gas
Refrigerant gas
Refrigerant gas
Temperature
Humidity
ppm
%LEL
ppm
ppm
ppm
%V/V
ppm
ppm
ppm
ppm
ppm
%
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
°C
% RH
0 – 300
0 – 100
0 – 50
0 – 25
0 – 300
0 – 25
0 – 2000
0 – 100
0 – 200
0 – 100
0 – 20
0 – 100
0 – 2000
0 – 2000
0 – 2000
0 – 2000
0 – 300
0 – 300
0 – 300
0 – 300
0 - 300
0 – 300
0 – 300
0 – 300
0 – 300
0 – 150
0 – 100
1
Range Recommendations for PolyGard sensors
2
During oxygen measurement falling signal!
3.6.3 Measuring range
The measuring range can be defined from 10 to 10000. The measuring ranges in the above table are typical and
only recommendations. For actual ranges see the sensor manufacturing specifications.
The measuring range must agree with the signal (4 to 20 mA) for active transmitters.
(4 mA = Display=0, 20 mA = Display Measuring range = max. point)
3.6.4 SP Signal
Gas transmitter with electro-chemical or catalytic bead sensors are linear for gas concentration proportional to the
4 to 20 mA signal.
Semiconductor gas sensors that are not linear and have a (exponential) signal. This signal is non-linear 4 to 20
mA signal from the gas transmitter.
The Controller MGC2 has the capability to monitor both types of gas transmitters, and other linear 4-20 mA
sensors. The type of signal is defined in this menu.
Symbol Description
Setting
Status Function
SP 01
Sensor Point
Selection SP No.
Linear
SP Signal
linear
linear = Transmitter with linear Output signal
not linear = Transmitter with non linear Output signal (future).