Electronic No-Flow Monitors

KENCO Engineering - Electronic No-Flow Monitor

ELECTRONIC NO-FLOW MONITOR FOR DIVIDER BLOCKS

OPERATING PRINCIPLE

The Kenco solid state Electronic No-Flow Monitor is 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.

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.

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

SPECIFICATIONS AND WIRING

TERMINAL DESCRIPTIONS

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 (-)

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.

SPECIFICATIONS

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

TOTALIZER OPTION

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.