P E R F E C T S O L U T I O N S I N
G A S A L A R M
S Y S T E M S
w w w .
m s r - e l e c t r o n i c
. d e
Page 2
| Dec. 2015
Po ly Gar d ® 2 M SC 2 – Dat a Sh eet an d Us er M an u al
MSR-Electronic GmbH
::: Würdinger Str. 27 + 27A ::: 94060 Pocking
::: Germany
Specifications subject to change without notice
PolyGard® is a registered trademark of MSR-Electronic GmbH
MSC2- Multi Sensor Controlle
r
for toxic and combustible
gases, refrigerants and oxygen
Gas measuring, monitoring and warning controller based on state-of-the-art micro-
technology for continuous monitoring of the ambient air for toxic and combustible
gases, refrigerants or oxygen.
The MSC2 has an input for connecting a digital sensor cartridge (SC2) that transmits
the temperature-compensated measurement value in digital form. The controller
monitors this value and activates the alarm relay if the set alarm thresholds for pre-
alarm and main alert are exceeded. The main alarm is additionally signalized by the
integrated buzzer and the three-colour status LED, alarm-fault-operation-service. In
case of an internal fault in the sensor cartridge or in the MSC, both equipped with
integrated SIL2 compliant self-monitoring, the fault message relay is triggered. The
remote monitoring is possible via the integrated RS 485 interface with serial
protocol.
For convenient operation the MSC2 is already completely configured and
parameterized ex works.
The intended sites within the ambient conditions as specified in the Technical Data are all areas being directly connected
to the public low voltage supply, e.g. residential, commercial and industrial ranges as well as small enterprises (according
to EN50 082).
The PolyGard® Multi Sensor Controller MSC2 must not be used in potentially explosive atmospheres.
APPLICATION
The MSC2 is designed for leakage detection in refrigeration plants.
FEATURES
Internal function monitoring with integrated hardware watchdog
Hardware and software according to SIL2 compliant development process
Easy maintenance and calibration by replacing the sensor cartridge or via comfortable on-site calibration
Modular technology (plug-in and exchangeable)
Reverse polarity protected, overload and short-circuit proof
For one sensor cartridge (SC) at the housing
Three relays with change-over contact, potential-free max. 250 V AC, 5 A
Two transistor outputs, 24 V DC, 0.1 A (plus switching)
Two digital inputs, one of them is occupied for external reset of the horn
Alarm thresholds alterable via jumper 0.5 / 1.0 vol % or 1.0 / 1.8 vol %
Different types of housing
Status LED for alarm, fault, operation and service
Buzzer
Operating voltage 230 V AC, power supply with wide range input 90 to 240 V AC
Operating voltage 24 V DC (option)
