Electronic No-Flow Monitors Operating
Principal
The Kenco solid state
Electronic No-Flow Monitors are designed to provide protection
against compressor and engine failure. The device monitors lubricant
flow from the lube oil supply to the different lubrication points
at the divider block. The monitor, which is wired to a proximity
switch, senses an electronic pulse, which is an indication of
one complete cycle of the lubrication system. An LED (light emitting
diode) will pulse every time the lubrication system cycles. The
adjustable shutdown timer will send a signal to sound an alarm
or shut down the system if the monitor does not receive a pulse
within the allotted time (adjustable between 30 seconds and 2
minutes). Best of all, the Electronic No-Flow Monitor can be mounted
anywhere (not just on the divider block). The solid state design
contains 3 field replaceable lithium batteries with a battery
life of 3-5 years.
Electronic No-Flow
Monitors Features
- Solid state protection for
mechanical lubrication systems
- Easy to install and operate-No
programming necessary
- LED cycle indicator
- Failsafe shutdown protection
for normally open or normally closed loops
- N-F-M requires no external
power-lithium battery assembly is field replaceable
- N-F-M Housing is CSA approved
Explosion Proof for Cl. 1. Div. 1 Groups B, C, D; Cl. II,
Groups E, F, G; Class III Type 4
- Electronics module can be
remotely mounted at the panel board or any other safe location
so that the signal can be monitored quickly and easily, with
no danger to operator
- Electronics module is not
subject to the heat and vibration of the divider block
- Standard output can be wired
for remote totalization and/or monitoring back to a PLC
- Shutdown timer can be adjusted
while unit is in service 30 seconds to two minutes
- N-F-M is not affected by oil
viscosity or temperature
- Full 2 year warranty
- Options include programmable
LCD totalizer for Cycle count Total Pints, Gallons, Liters,
etc./Pints per day, liters per day, etc.
Electronic No-Flow
Monitors Housing Features
- Precision machined, aluminum
casting
- 1/2² NPT conduit feed-through
hubs, offset for maximum clearance & capacity
- Internal and external ground
screws and tamper resistant cover set screw for extra safety
- Glass cover with a 2 5/8²
diameter for easy reading
- Buna-N rubber gasket for NEMA
4 watertight applications
- Corrosion resistant blue epoxy
coating.
- MTG lugs with 5/16² holes
- CSA approved Class I, groups
B,C,D; Class II, groups E,F,G; Class III, type 4
- FM approved Instrument Housing,
FM Standard 3615
- External boss to tap optional
drain
Electronic No-Flow Monitors
Specifications and Wiring
Terminal Descriptions
- Terminal 7 This terminal
is the common ground connection for the Auxiliary Output Pulse.
- Terminal 6 This is the
(+) side of the Auxiliary Output Pulse. This pulse follows
the input pulse.
- Terminal 5 This is the
common ground for the Proximity Switch Input.
- Terminal 4 This terminal
is for the (+) connection for the Proximity Switch Input.
If the circuit does not receive a switch closure on this terminal
within the timer cycle, an alarm condition will occur.
- Terminal 3 This is the
Normally Open connection for the alarm output. If the unit
goes into an alarm condition this connection will short to
ground.
- Terminal 2 This is the
Normally Closed connection for the alarm output. This connection
will be shorted to ground until there is an alarm condition,
then it will open.
- Terminal 1 This is the
Common Ground connection for the alarm outputs.
- J2 - This is the pulse indicator
that will illuminate the low current LED each time the proximity
switch receives a pulse from the divider block.
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Terminal 7.........................Aux.
Out (-)
Terminal 6.........................Aux Out (+)
Terminal 5...Input (-) Proximity Switch
Terminal 4...Input (+) Proximity Switch
Terminal 3.........................N.O. Output
Terminal 2.........................N.C. Output
Terminal 1.........................Common (-) |
Electronic No-Flow Monitors
Specifcications
- Output Current 100mA
@ 30 VDC
- Battery Type AA Type
3.6V lithium 2500mA hours
- Battery Life 3 years
+
- Operating Temperature: -40šF
to 158šF
- Output Type: Open collector
field effect transistor
- Maximum Input Frequency:
1 KHZ
- Timer Accuracy +/- 5% of
total time
Electronic No-Flow Monitors
Toitalizer Options
Specifications Character
Height: 0.43² Case Material: Cycolac X-17 Mounting: Panel
Mount (mounting clips & gasket provided) Connections:
Screw Terminals Operating Temp: -4šF to 158šF. Internal Battery:
User replaceable 3V lithium battery Battery Life: 5 years
+ Front Panel Design: NEMA 4x when mounted with gasket provided.
Rate Indicator
Type: 8 digit LCD Scale Factor Range: .001 to 9999. Method
of Calculation: 1/Tau Accuracy: +/-0.2%. Update Time: .7 seconds
Digits: 4/5 (4 calculated, 5 displayed with fixed 0 in at
least significant digit)
Applications Cycle counter
Totalize in any unit of measure Programmable for rate as in
pints per day, liters per day, etc.

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