User Manual - PolyGard
®
2 / µGard
®
2
Sensors for Toxic Gases and Oxygen
Page
10
PolyGard
/ µGard
®
are registered trademarks of MSR
GA_SC2_MC2_Tox_D_0618
Phone 0049(0)8531/9004-0
Fax: 0049(0)8531/9004-54
Specification subject to change without notice
MSR-Electronic GmbH, Würdinger Str. 27, D 94060 Pocking www:msr-electronic.de
Printed in Germany
8 Cross-sensitivity Data
The cross sensitivity depends on the used transmitter type and can be read from the table Technical Data (see
section 9.). Other gases can have an influence on the sensitivity, too. The table does not claim to be complete.
The indicated sensitivity data are only standard values referring to new sensor elements.
9 Technical Data
9.1
MC2
Electrical
Power supply
16
– 29 V DC, reverse-polarity protect.; 18 - 27 V AC
(only for output signal 2-10 V)
Power consumption (for 24 VDC)
MC2 for toxic gases and oxygen
23 mA, max. (0.6 VA for 24 V)
Analog output signal
Proportional, overload and short-circuit proof,
load
500 Ohm for current signal, ≥ 50 kOhm for
voltage signal
4 - 20 mA or 2 - 10 V = measuring range
3.2 < 4 mA or 1.6 - 2 V = underrange
> 20- 21.2 mA or 10 - 10.6 V = overrange
2 mA or 1 V = fault
> 21.8 mA or 10.9 V = fault High
General
Sensor element
Electrochemical
Pressure range
Atmospheric ± 20 %
Storage temperature
5 °C to 30 °C (41 °F to 86 °F)
Storage time
6 months
Physical
Housing type P
Polycarbonate
Combustion
UL 94 V2
Enclosure colour
RAL 7032 (light grey)
Dimensions: Housing type P
(d x H) 24 x 22 mm (0.94 x 0.87 in.)
Weight
ca. 30 g (0.066 lb.)
Protection class
IP 65
Mounting
Screw mounting
Connection
Screw type terminal 3-pin
Guidelines
EMC directives 2014/30/EU
CE
Compliance with:
EN 61010-1:2010
ANSI/UL 61010-1
CAN/CSA-C22.2 No. 61010-1
EN 50104 (for O
2
)
EN 50545 (for underground garages)
Warranty
1 year on sensor (not if poisoned or overloaded),
2 years on device
