1. No category

µ-Gard® Analog Transmitter
DESCRIPTION
Analog transmitter for the continuous monitoring of gases
and vapours in the ambient air. Used in garages, chiller
rooms and heating systems, the µ-Gard MA series analog
transmitter is a reliable gas detector.
APPLICATION
For the detection of gases within a wide range of commercial
applications. MA transmitters with Pellistor or electrochemical sensor offer a linear 4 – 20 mA output signal. MA
transmitters with semi-conductor sensor offer a non-linear 4
– 20 mA output signal and therefore are only suitable for
connection to the Gas Controller series by MSR-E.
FEATURES
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
Continuous monitoring
Easy maintenance / calibration
Reverse polarity protected
Overload and short-circuit protected
Long life sensor
Low zero point drift
Poisoning stable
4 – 20 mA analog signal output (standard)
2 - 10 V analog signal (optional for Ex – please specify when ordering)
Approved according to EN 61010-1; ANSI/UL 61010 1; CAN/CSA-C22.2 No. 61010-1
CONNECTING DIAGRAM
MA-X_Transmitter
1 24 VDC
2 4..20 mA/2-10V DC
3 0 VDC
MSR Electronic GmbH | Würdingerstr. 27a | 94060 Pocking GERMANY
Tel: +49 8531-9004-0 Fax: -44
www.msr-electronic.de
1 | Oct 13
Specification subject to change without notice
µGard® is a registered trademark of MSR electronic
SPECIFICATIONS
MA-0
CO
Sensor element
Response time
t90 (s)
Stability & resolution
Repeatability (% of reading)
Long term zero point drift
of reading/ year
Long term sensitivity drift
(% reading/month)
Sensor life expectancy
(normal operating
environment) in years
Max. storage time
Operating Environment
Humidity non-condensing
Physical characteristics
Enclosure type A
Flammability
Enclosure color
Dimensions
Weight
Protection class
Installation
Cable entry
Wire connection
Wire distance
Output signal
Analog output signal
Standard: 4-20 mA
Selectable: 2-10 V
Guidelines
Warranty
MA-9
NO
MA-2
NO2
MA-5
SO2
MA-2
NH3
Electrochemical, diffusion
≤ 50
≤ 15
≤ 45
≤ 25
≤ 15
≤ 120
±3
ppm
±3%
± 0.1
vol. %
---
± 0.2
ppm
---
± 0.2
ppm
±2%
0.2
ppm
±2%
<± 20
ppm
---
< 5%
--< 4%
/12
≥2
< 0,2
ppm
< 2%
/1
≥2
< 0,2
ppm
< 2%
/1
≥2
---
---
< 0,3
ppm
< 5%
/12
≥2
≥5
< 2%
/1
≥2
MA-2
Ex
MA-2
NH3
MA-3
NH3
Catalytic bead
(Pellistor)
≤ 10
(Methane)
± 1% of
reading
--± < 6% LEL
(Methane)
± < 1,5%
Methane
≥3
-10 to
+ 50°C
5 C to + 40 °C
Atmospheric ±10%
≤ 100
≤ 50
≤ 50
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≥5
15 – 90 % RH
15 – 95 % RH
-15 to + 50°C
-15 to + 50 °C
0 to + 50 °C
0 to + 50 °C
Polycarbonate
UL 94: V2
RAL 7032 (light grey)
(W x D x H) 94 x 130 x 57 mm
Approx. 0.3 kg
IP 65
Wall or pillar mounting
Standard 1 x M20
Screw type terminal, min. 0.25 mm2 (24 AWG) max. 2.5 mm2 (14 AWG)
Max. loop resist. 500 Ω (= wire resistor + controller input resistor)
Proportional, 4 – 20 mA, load ≤ 500 Ω overload and short-circuit proofed
Proportional, 2 – 10 V, load ≥ 50 kΩ overload and short-circuit proofed
EMC Directives 2004/108/EC
EN 61010-1:2010
ANSI/UL 61010-1
CAN/CSA-C22.2 No. 61010-1
CE
12 months on material (without sensor)
www.msr-electronic.de
MA-3
ETO
≤ 30
Meth.
---
18 - 28 VDC (reverse polarity protected)
Electrochemical sensor: 22 mA, max. 0.6 VA
Pellistor/ Semiconductor sensor: 35 mA, max. 0.85 VA
MSR Electronic GmbH | Würdingerstr. 27a | 94060 Pocking GERMANY
Tel: +49 8531-9004-0 Fax: -44
MA-4
Ex
12 months
15 – 90 % RH
-10 to + 50°C
MA-4
Freon
Semiconductor sensor
6 months
Temperature
Working temperature
Storage temperature
Pressure range
Electrical
Power supply
Power consumption
MA-9
O2
2 | Oct 13
Specification subject to change without notice
µGard® is a registered trademark of MSR electronic
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ORDERING
INFORMATION
MA-X-XXXX–X–X
4
6
7
8
9
A
B
C
D
E
F
K
L
M
Q
F
F1
A
D
D1
5
1
Version
Factory calibration 0 – 20 ppm 5, 6
Factory calibration 0 – 50 ppm 1, 5, 8
Factory calibration 0 – 100 ppm 1
Factory calibration 0 – 150 ppm 1
Factory calibration 0 – 200 ppm 1
Factory calibration 0 – 250 ppm 1
Factory calibration 0 – 300 ppm 1, 2
Factory calibration 0 – 400 ppm 1
Factory calibration 0 – 500 ppm 1
Factory calibration 0 – 1000 ppm 1, 2
Factory calibration 20 – 2000 ppm 12, 13
Factory calibration 0 – 25 vol % 7
Factory calibration 0 – 50% LEL14
Factory calibration 0 – 100 % LEL 3
Factory calibration 30 – 300 ppm 4, 13
Enclosure
Plastic enclosure (87 x 45.5 mm) IP43
Plastic enclosure (87 x 45,5 mm) IP44
Plastic enclosure (130 x 94 x 57 mm) IP65
Plastic enclosure (65 x 94 x 57 mm) IP43
Plastic enclosure (65 x 94 x 57 mm) IP54
Stainless steel enclosure
0-1110
2
2-1120
3
2-3408
4
3-1120
5
9-1129
6
2-1130
7
9-1195
8
5-1196
12
4-2070
12
4-2071
12
4-2072
12
4-2073
12
4-2074
12
4-2075
12
4-2076
13
4-2077
13
4-2078
13
4-2079
12
4-2080
13
4-2069
13
4-2068
12
4-2067
12
4-2064
3
2-3400
3
2-3480
14
4-3H55
3
4-3H80
12
3-2089
Gas*
Carbon monoxide CO
Ammonia
NH3
Ammonia
NH3
Ammonia
NH3
Nitrogen monoxide NO
Nitrogen dioxide NO2
Oxygen
O2
Sulphur dioxide
SO2
Freon
R 22
Freon
R 401a
Freon
R 401b
Freon
R 402a
Freon
R 402b
Freon
R 408a
Freon
R 409a
Freon
R 134a
Freon
R 404a
Freon
R 416a
Freon
R 407c
Freon
R 507
Freon
R 410a
Freon
R 411a
Freon
R 123
Methane
CH4
Propane
C3H8
Methane
CH4
Propane/ LPG
C3H8
Ethylene
C2H4
El.chem. sensor
El.chem. sensor
Pellistor sensor
Semicond. sensor
El.chem. sensor
El.chem. sensor
El.chem. sensor
El.chem. sensor
Semicond. sensor
Semicond. sensor
Semicond. sensor
Semicond. sensor
Semicond. sensor
Semicond. sensor
Semicond. sensor
Semicond. sensor
Semicond. sensor
Semicond. sensor
Semicond. sensor
Semicond. sensor
Semicond. sensor
Semicond. sensor
Semicond. sensor
Pellistor sensor
Pellistor sensor
Semicond. sensor
Semicond. sensor
Semicond. sensor
* The sensors partially have a cross-sensitivity to other gases due to the measuring principle. More information on request.
Example: Freon Transmitter for R 134 a, plastic enclosure, factory calibration 20 – 2000 ppm
Order number: MA-4-2077-F-F
MSR Electronic GmbH | Würdingerstr. 27a | 94060 Pocking GERMANY
Tel: +49 8531-9004-0 Fax: -44
www.msr-electronic.de
3 | Oct 13
Specification subject to change without notice
µGard® is a registered trademark of MSR electronic