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Idiomas disponibles
Idiomas disponibles
MMT
MMT is a 4÷20mA analogue input module for gas detectors and other device interfacement that use this standards. The
module is endowed with isolator device and it is compatible with new NOTIFIER panels series. Each MMT module use only
one address of 99 available on loop. The modules have very small dimensions and can be easily mounted in the common
flush boxes type B503.
FUNCTIONING WITH PANELS
During panel self-programming procedure, the module is recognized as a detector. The panel assign as default Type-ID
"TEC3". At the same time is possible to assign the detector parameters:
Pre-alarm threshold (P1) (default P1 = 10% of selected end of scale).
Pre-alarm threshold (P2) (default P2 = 20% of selected end of scale).
Alarm threshold (AL) (default AL = 30% of selected end of scale).
CBE Equation active when detected
value is greater of one of three threshold.
When one of three threshold are reached,
it is possible to active an output module
(pre-alarm threshold "P1" = (A),
pre-alarm threshold "P2" = (B),
alarm threshold "AL" = (C))
Descriptive text.
Tracking option.
Technological range. It is possibile to configure 16 range. Following, the first seven pre-configurations:
Description
N
(max.10 ch.)
I01
0-100%
I02
0-200ppm
I03
0-25%
I04
0-100ppm
I05
0-500ppm
I06
0-20ppm
I07
-10+70ºC
Threshols inversion option (default =NO) for oxygen sensors:
20mA
PREALL.1
AL
P2
P1
4mA
NORMAL
20mA
PREALL.1
P1
P2
AL
4mA
NORMAL
Analogue module for technological
4÷20mA input devices
Example of CBE
module equation
Phisical
Low scale
units
value
(max3 car.)
%
0
ppm
0
%
0
ppm
0
ppm
0
ppm
0
ºC
-10
ALLARM
t
PREALL.2
ALLARM
t
PREALL.2
CBE
(L01A01)
Line number
"P1" threshold activation
Hight scale
Detectors
value
100
Esplosive Gas
200
Toxic Gas
25
Oxigen
99
Toxic Gas
500
Toxic Gas
20
Gas Tossici
+70°C
Temperature
The graphic show the characteristic of functioning of "TEC3" Type-
ID, programmed with threshold inversion option = NO.
As shown the slope is by increasing current values.
Than the thresholds must be in accordance with following rule:
P1< P2 < AL
It could be used with explosive gas detectors.
The graphic show the characteristic of functioning of "TEC3" Type-
ID, programmed with threshold inversion option = yes.
As shown the slope is by decreasing current values.
Than the thresholds must be in accordance with following rule:
P1> P2 >AL
It could be used for deficiency of oxygen detectors.
Note: Another tipology of wiring or Type-ID are
available on panel manual.
Device number
The range define phisical
units and range that
4÷20mA interface module
have to analize assigning to
them the initial scale value
and full scale.
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