User Manual - PolyGard
®
2 / µGard
®
2
Sensors for Toxic Gases
Page 10
PolyGard
/ µGard
®
are registered trademarks of MSR
Made in Germany
GA_SC2_MC2_Tox_D_0820
Phone +49 8531 9004-0
Fax: +49 8531 9004-54
Specification subject to change without notice
MSR-Electronic GmbH, Buergermeister-Schoenbauer-Str. 13, D 94060 Pocking
www.msr-electronic.de
8
Cross-sensitivity Data
The cross sensitivity depends on the used transmitter type and can be read from the table Technical Data
(see section 9.3). 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
All specifications were collected under optimal test conditions.
We confirm compliance with the minimum requirements of the applicable standard.
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
23 mA, max. (0.6 VA for 24 V)
Analog output signal
Proportional, overload and short-circuit proof,
load
500 Ω for current signal, ≥ 50 kΩ 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
SENSOR ELEMENT
Gas type
See Ordering Information
Sensor element
Electrochemical sensor
Pressure range
Atmospheric ± 10 %
Storage temperature range
1
0 °C to 20 °C (32°F to 68 °F) or
5 °C to 20 °C (41°F to 68 °F) for NH
3
, CO, NO
2
, O
2
Storage time
6 months
Poisoning
Electrochemical sensors are susceptible to poisoning by
organic solvents and silicone vapours.
PHYSICAL
Enclosure P (M25)
Polycarbonate UL 94 V2
Colour
RAL 7032 (light grey)
Dimensions
(D x H) 24 x 22 mm (0.94 x 0.87 in.)
Weight
Ca. 30 g (0.066 lb)
Protection class
IP65 (only if mounted in housing type A, D or N)
Mounting
Screw mounting / M25
Wire connection
Screw-type terminal min. 0.25 mm
2
, max. 1.3 mm
2
,3-pin,
24 to 16 AWG
REGULATIONS
Directives
EMC directives 2014/30/EU,
CE
Compliance with:
EN 378
EN 45544
EN 50104 (for O
2
)
EN 50271
EN 50545
EN 61010-1:2010
ANSI/UL 61010-1
CAN/CSA-C22.2 No. 61010-1
Warranty
1 year on sensor (not if poisoned or overloaded),
2 years on device
1
A higher storage temperature can have a negative effect on sensitivity and service life.
2
We recommend recalibrating the devices if stocked for a longer period (>8 weeks)
