Series Dual Channel – Machinery Data
Transmitter (Vibration)
The MIL7120 series of Dual Channel Machinery Data
Transmitters, measures one of three vibration parameters
depending on the sensor selected. These are summarised
against the part numbers given in the table below.
At the time of placing the order, the client must
specify the required scale and range or listed part
number..
Part
Nos.
FUNCTION
Chl.
Display
Sensors
Units
Ranges
M71211 / 2
Velocity
microns pk-pk
0-250 & 0-500 microns
M71213 / 4
ECP
microns pk-pk
0-250 & 0-500 microns
M71233 / 4
Vibration
2
Analog
Velocity
mm/sec pk
0-25 & 0-50 mm/sec
M71217 / 8
Accelerometer
mm/sec pk
0-25 & 0-50 mm/sec
M71235
Accelerometer
g
0-25 g
The MDT is proven
for continuous reliable operation in a tough industrial environment.
Standard instrumentation volt and mA signal data is transmitted
to the Central Control Room or DCS for trending and display.
The Transmitter can be located near to the measurement point
and used for warning and alarm at local switch panels.
When associated with MIL544M sensor, the unit ideal for most
machinery vibration monitoring and protection applications.
It converts the vibration velocity input signal into a proportional
DC current output. The transmitter’s output current
is 4 mA DC (when input vibration signal corresponds to zero)
and 20 mA DC (when input vibration signal corresponds to full
scale) with an accuracy of ± 3% of full scale range.
Specification
Construction
Ruggedly packed in a die cast
Aluminium IP65 enclosure
Mounting
Surface or rack mounted
Signal
Input
- From MIL544M Velocity Sensor or
- Eddy Current Probe or
- Accelerometer (ICP).
Frequency
Range
5–2,500 Hz within ± 5 %
Display
Blind type
Controls
Push button for ALARM and TRIP read, adjust
and reset.
Alarm
& Trip Set points
Independent and adjustable over full scale
range (5% -
100% is recommended) by trim pot inside the enclosure.
Alarm
Relays
Independent Relay 1 C/O contacts rated
at 5A resistive @ 230V AC Normally de-energised (non fail
safe)
Trip
Relays
Independent Relay 2 C/O contacts rated
at 5A resistive @ 230V AC Normally de-energised (non fail
safe)
