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Mecon 02/2010
Transmitter mag-flux M1
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Technical data
Reference conditions
In conformity with IEC 770:
temperature:
T = 20°C
relative humidity:
rH = 65%,
air pressure:
p = 101,3 kPa
Measuring tolerance
See characteristic values of the corresponding sensor.
Repeatability
See characteristic values of the corresponding sensor.
Influence of ambient temperature
•
For the pulse output:
± 0,05 % per 10 K.
•
For the current output:
± 0,1 % per 10 K.
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Operating conditions
Installation conditions
Caution
Additional cable glands (not contained):
The operator is responsible for that fact that
according to the enclosure and ignition enclo-
sure certified cable glands or screws are used.
The kind of threads is stamped on the rating
plate.
At the connection between sensor and trans-
mitter a metalized cable gland must be used for
the screen.
(See chapter „Connection of the magnetic cur-
rent and electrode line on page 9)
Compact version
For the compact version the transmitter housing is mounted on
the sensor. Therefore no cable is necessary between sensor and
transmitter.
Remote version
The transmitter needs to be mounted separately from the sensor
if:
•
the mounting area is difficult to access,
•
there is a lack of space,
•
medium and ambient temperatures are extremely high,
•
there is strong vibration.
Fig 6
Proper installation of cables at high humidity and wet conditions
The
mag-flux M1
transmitter has to be mounted free of vibra-
tions!
Caution:
For the separate version, the minimum per-
missible conductivity of the medium is deter-
mined by the distance between the sensor and
the transmitter. The maximum cable length to
ensure accuracy is 200 m. For the cable type
see chapter „cable specification” on page 9.
Fig 7 Cable length for remote version
Important
•
The electrode cable must be fixed. If the
conductivity of the medium is low, cable move-
ments may change the capacity considerably
and thus disturb the measuring signal.
•
Do not lay the cables close to electrical
machines and switching elements.
•
Equipotential bonding must be ensured be-
tween sensor and transmitter.
Caution
Do not connect or disconnect the field coil cable
before the primary power of the meter has been
disconnected!
Environmental conditions
Ambient temperature range
- 20 °C to + 60 °C (-4°F to 140°F).
Below 0 °C the readability of the LCD display will be limited.
In the case of an outdoor installation, the device must be
protected against direct solar irradiation with a weather shield
Storage temperature
- 25 °C to + 60 °C (-13 °F to 140 °F)
Degree of protection
IP67.
