WHITLOCK INSTRUMENT DNFT-LED-PS Manual

DNFT
DIGITAL NO-FLOW TIMER
U.S. PAT. NO. 5,835,372
U.S. PAT. NO. 5,835,372
R
DIGITAL NO-FLOW TIMER
CYCLE INDICATION
Factory Sealed
II 2G EEx md IIC T5
R R
C C US US Cl I; Zone 1; Ex md IIC T4 Cl I; Zone 1; Ex md IIC T4
186200
Cl I; Div 1; Grps. A,B,C,D;T4
KEMA 00ATEX1090 X Amb. -40° C...+80°C
RED-Open Loop ORANGE-Closed Loop
DNFT-LED-PS
MONITORS MOVEMENT OF DIVIDER
VALVE PISTON FOR DEPENDABLE
"TIMED" SHUTDOWN PROTECTION
CLOSED LOOP OR OPEN LOOP OPERATION
INSTALLS DIRECTLY TO DIVIDER VALVE
NOT AFFECTED BY TEMPERATURE OR OIL
VISCOSITY
REQUIRES NO EXTERNAL POWER
LED INDICATOR - CYCLE INDICATION
DEDICATED SWITCH CLOSURE TO MONITOR
EACH DIVIDER VALVE CYCLE (PS OPTION)
FIELD REPLACEABLE BATTERY
Distributed by:
WHITLOCK INSTRUMENT
Odessa, TX 79761
R
432.3373412 Fax 432.335.5926
1.800.337.3412
DNFT-LED-PS

SPECIFICATIONS

WHITLOCK WHITLOCK
Material
Temperature Range
INSTRUMENT INSTRUMENT
Switch Rating
ODESSA, TX USA
LED-PS LED-PS
MODEL
2.5VA / 240VDC 2.5VA / 240VDC Epoxy Encapsulated
RATED
CE SERIAL #
0 0 0 5 0 7 0 0 0 5 0 7
Alarm/Shutdown
PN
0344
3 - M I N 3 - M I N
ALARM
Power
GRN-Ground YEL -Prox. SWI.
Battery
Alternate Battery
Divider Block Application............
Warranty
RATINGS

DESCRIPTION

The DNFT-LED is a totally enclosed electronic device, combining
the latest technology in microprocessor and transistor
components for detecting Slow-Flow and No-Flow of divider block
lubrication systems. The DNFT incorporates an oscillating crystal
to accurately monitor the cycle time of the lubrication system to
enable precision timed shutdown capability.
assembly and control housing mount directly to the divider valve to
become an integral part of the lubrication system. The DNFT
operates on a field replaceable lithium battery. If battery voltage
drops below normal operating levels the DNFT goes into alarm
mode and the unit cannot be restarted. LED models utilize an LED
to indicate each cycle of the divider valve. This enables the
operator to easily set and monitor lubrication rates.

OPERATION

Lubricant flow through the divider valve assembly forces the
pistons to cycle back and forth causing a lateral movement of a
magnet linked to the piston. Movement is monitored by the
microprocessor which resets the timer, lights the LED, and allows
the unit to continue operation, this indicates one complete cycle
of the lubrication system. The microprocessor must receive this
cycle in a predetermined time or a shutdown will occur. The
DNFT will automatically reset alarm circuit when normal
operation of divider valve resumes.
1300 N. Texas
www.noflo.com
P/N: 000507
...........................................Stainless Steel, Aluminum
.................................... -40 F to +185 F
................................................2.5VA/240 VDC
............. Factory default for 3 minute alarm
..............................Field Replaceable - Lithium Battery
................................................................. P/N 000505
...............................Radio Shack 960-0418
...................................................................2.5 Years
II 2G EEx md IIC T5
R R
C C US US
Cl I; Zone 1; Ex md IIC T4 Cl I; Zone 1; Ex md IIC T4
186200
Cl I; Div 1; Grps. A,B,C,D;T4
KEMA 00ATEX1090 X Amb. -40° C...+80°C
WHITLOCK WHITLOCK
INSTRUMENT INSTRUMENT
ODESSA, TX USA
............UL LISTED EL-CAST VFR 641
..Dropsa/Lincoln/SBCO/
507LIT LED-WI-1
07.11.01
0 0
Lubriquip
CE
0344
The magnet