BUL L E T I N
434A
I N S T A L L A T I O N & O P E R A T I O N
®
TrueCap
RFCapacitance Level Sensor
Model MK-2
M o d e l M K - 2
Thank you for purchasing a quality product manufactured by Monitor
Technologies LLC. We realize that you do have a choice of vendors
when procuring RF Capacitance sensors and we sincerely appreciate
your business!
This manual contains the information necessary to ensure a safe and
successful installation. Please read and comply with the section on page
10 of this manual pertaining to SAFETY. Doing so will ensure proper
operation of the equipment and the safety of all personnel.
Before discarding shipping container, please inspect it thoroughly and
verify that all parts ordered are accounted for. Sometimes smaller parts
become stuck under carton flaps and other packaging materials.
In the event that information contained herein does not completely satisfy your requirements or answer your questions, you may contact
Technical Support on our website www.monitortech.com, by e-mail at
techsupport@monitortech.com or by telephone at 1-800-766-6486
(1-630-365-9403). If your sensor ever requires service either in or out of
warranty, please contact us and obtain an RMA number prior to shipping
the unit to us.
®
www.monitortech.com
PRE -I N S TAL LAT IO N CON SI DE RAT IO NS
Choosing a Location: (See Figure 2)
1) Material Flow - When selecting a location for the MK-2,
choose a point in the vessel where the probe will be out of
the direct flow of incoming and outgoing material to prevent
any mechanical damage that may be caused by the pres sure of the flow. The MK-2 must be positioned at a point
where incoming material will reach and cover the probe in its
normal flow, and when receding, will flow away from the
probe in an even manner. For best results, choose a posi tion where a majority of the probe, not just the tip, will be
covered. This is particularly important when detecting mate rials with low relative dielectric constants and low product
densities. The unit will not operate as a “tip sensitive”
device. For extended length models, allow for at least 8 to
12 inches (203-305 mm) of probe coverage. When sensing
highly conductive materials, or those with a high dielectric
constant, the MK-2 can perform as a “tip sensitive” sensor.
2) Vessel Contact - Select an area where the probe can not
contact any internal structure elements of the vessel. When
using the Cable Extension Probe, consider the angle of
repose of the material that will flow into and out of the ves sel. Insure that the expected swing of the cable will not
touch the vessel.
3) Driven Shield Penetration - Select a location which
ensures that the driven shield section protrudes into the ves sel and is not recessed in the mounting neck.
4) Multiple Probe Proximity - If more than one sensor is
mounted in the vessel, do not place the sensors closer than
18 inches (457 mm) from one another.
5) Pipe Extension Reinforcement - When top mounting a
probe with a pipe extension, select a location where it is fea sible to reinforce the extension to the vessel wall. See
Mechanical Installation portion of this bulletin for details.
6) Split Architecture Installation - When installing a sensor
with a remote probe, the restrictions above apply to the
remote probe. The remote electronics can be installed
either horizontally or vertically. The remote electronics must
be located within 12 feet (3.6 m) (wiring distance) of the
probe at a location that is free from excessive heat and/or
vibration.
Cover Removal: (See Figure 1)
Before loosening the cover, loosen or remove the cover lock
screw. Spanner slots are incorporated on the top of the cover
which should be used to loosen the cover from the housing.
Use a flat bar for initial loosening. DO NOT use a strap or chain
type wrench. Keep hands clear of threads on the cover and
housing to avoid contact with the thread lubricant.
Figure 1
Figure 2
2
MEC HA N I C A L I NSTA LL AT I ON
Standard, Food Grade, Stub, Cable Extension and Remote
robe Mounting: (See Figures 3, 4 & 5)
P
1) Select a mounting location in accordance with the Pre-
Installation Recommendations.
2) If using a welded coupling, cut a hole into the side/top of the
vessel corresponding to the mounting connection (i.e. 1-1/2”
BSPT, 1-1/4” NPT or 3/4” NPT). If using a Monitor mount ing plate, cut a 2-1/2 inch (64 mm) center hole and six 11/32
inch (9 mm) mounting holes (for 5/16” bolts) on a 7 inch (178
mm) bolt circle. Use mounting plate gasket as a template.
3) Weld coupling or attach mounting plate to vessel wall.
4) Insert probe through coupling. Do not use sealant tapes (e.g.
Teflon tape) or putties. When using the 1-1/2” BSPT or
1-1/4” NPT connection, grease threads with anti-seize then
thread unit tightly into place by gripping and rotating hous ing. When using the 3/4” NPT connection, thread unit tight ly into place by gripping and rotating 15/16 inch (24 mm)
wrench flats provided on fitting. Continuity between sensor
mounting point and vessel wall must be maintained to
assure proper probe operation.
IMENSIONS ARE SHOWN IN INCHES WITH MILLIMETER EQUIVALENT IN BRACKETS
D
Figure 5
Figure 3
Lagged Housing Version Mounting: (See Figure 6)
1) Select a mounting location in accordance with the Pre-
Installation Recommendations.
2) Cut a hole into the side/top of the vessel corresponding to
the coupling used.
3) Weld coupling to the vessel wall.
4) Insert probe through coupling and thread unit tightly into
place by gripping and rotating the 15/16 inch (24 mm)
wrench flats provided on fitting closest to mounting point.
Do not use sealant tapes (e.g. Teflon tape) or putties. If flats
are inaccessible due to tank insulation, thread unit into place
by gripping and rotating lagging pipe with a strap/pipe
wrench. Continuity between sensor mounting point and vessel
wall must be maintained to assure proper probe operation.
Figure 4
Figure 6
3
Pipe Extension Probe Mounting: (See Figure 7)
1) Select a mounting location in accordance with the Pre-
Installation Recommendations.
2) If using a welded coupling, cut a hole into the top of the vessel
corresponding to O.D. of the 1-1/4” coupling used. If using a
Monitor mounting plate, cut a 2-1/2 inch (64 mm) center hole
and six 11/32 inch (9 mm) mounting holes (for 5/16” bolts)
on a 7 inch (178 mm) bolt circle. Use mounting plate
gasket as a template.
3) Weld coupling or attach mounting plate to vessel wall.
4) Insert probe through coupling, grease threads with anti-seize,
then, thread unit tightly into place by gripping and rotating
housing. Do not use sealant tapes (e.g. Teflon tape) or put-
ties. Continuity between sensor mounting point and vessel
wall must be maintained to assure proper probe operation.
5) Mechanical reinforcement of the pipe extension should be
considered whenever the overall probe length (from mount ing point to probe tip) exceeds 60 inches (1.5 m).
Mechanical clamping, such as “U” or “C” channel with “U”
bolts should be used. DO NOT USE HEAT to connect brace
to pipe extensions as wiring inside pipe could be damaged.
Adding Solid Probe Extension - Optional: (See Figure 7A)
If it is necessary to augment the length of the 16” (406mm)
standard sensing probe, probe extensions are available.
To attach the probe extension slip the coupling end of the
extension over the free end of the standard probe. Align the
through-holes in the coupling with the through-hole in the probe
and insert the supplied roll pin.
SOLID PROBE
XTENSIONS
E
Figure 7A
Remote Electronics Mounting
The split architecture configuration is used to protect the electronics from excessive heat or physical vibration.
1) Select a location that is within 12 feet (3.6m) wiring distance
of the remote probe but where the extreme temperatures or
vibration is not present.
2) The Remote Electronics for Ordinary Locations has no holes
cut in the fiberglass box. Drill holes in enclosure insuring cir cuit separation between the remote probe interconnection
and the mains/outputs. Remove electronics (4 backpanel
screws) prior to drilling holes.
3) The Remote Electronics for Hazardous Locations has three
conduit entrances, one of which is plugged at the factory.
This plug may be relocated as desired. All openings must
be suitably sealed to insure environmental and hazardous
location protections.
4) Drill a hole pattern in the structure to which the Remote
Electronics will be mounted (See Mechanicals for details).
5) Secure the enclosure to the structure using 1/4" (6mm) screws.
Figure 7
ELE CT R I C A L I NSTA LL AT I ON
Hazardous Location Precautions:
Observe the regulations listed in the National Electrical Code
regarding equipment in hazardous locations. In particular,
install a conduit seal fitting within 2 inches (50 mm) of the RF
Capacitance sensor (for Class I rated products only), ensure
power is disconnected whenever the cover is removed, upon
completion ensure cover is completed re-attached and terminate IS ground screw to local intrinsically safe ground. Do not
substitute any electrical components as this may impair intrinsic safety and thereby compromise safety.
Factory Wiring:
The MK-2 probe wires are connected to the backside of the
PCB. DO NOT alter this connection. Doing so will likely
cause improper operation of the sensor.
Permanently Connected Equipment:
Disconnecting devices shall be included in the system installation.
More on next page >
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+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
N
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 N
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 C
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 CO
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIA
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
W
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WI
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIR
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRI
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRIN
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING D
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DI
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRA
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAG
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGR
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
C
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
CO
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 N
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC2
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 N
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PRO
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
P
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PR
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PROTECTI
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PROT
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PROTE
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PROTEC
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PROTECT
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PROTECTIV
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PROTECTIVE
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PROTECTIVE
C
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PROTECTIVE
C OND
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PROTECTIVE
CO
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PROTECTIVE
CON
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PROTECTIVE
CONDUC
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PROTECTIVE
CONDU
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PROTECTIVE
CONDUCTOR
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PROTECTIVE
CONDUCT
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PROTECTIVE
CONDUCTO
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PROTECTIVE
CONDUCTOR
TERMINAL
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PROTECTIVE
CONDUCTOR
T
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PROTECTIVE
CONDUCTOR
TE
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PROTECTIVE
CONDUCTOR
TER
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PROTECTIVE
CONDUCTOR
TERM
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PROTECTIVE
CONDUCTOR
TERMI
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PROTECTIVE
CONDUCTOR
TERMIN
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PROTECTIVE
CONDUCTOR
TERMINA
ADV B0051
3.50 x 3.00
A
09/13/16
*
ISOLATED
LINES
LOAD
L
L
LOA
D
LINES
ISOLATED
L
L
(DCV)
+L1-
N
(ACV)
*RECOMMENDED, NOT CRITICAL
NO2 NC2 COM2
WIRING DIAGRAM
COM1 NC21 NO1
PROTECTIVE
CONDUCTOR
TERMINAL
In installations where multiple circuits are used (i.e. independent circuits for power input and output relay), individual dis-
onnects are required. The disconnects shall be within close
c
proximity of the equipment, accessible to operators, and
marked appropriately as the disconnect for the associated
circuit. Assure the disconnect ratings are appropriately sized
for the circuit protected (see Specifications).
Circuit Separation:
wo cable entry locations are provided to aid in maintaining
T
separation of "hazardous live" (typically mains voltages such as
115VAC and 230VAC) and limited circuits (typically control
voltages less than 30Vrms or 42.4VDC). However, since the
MK-2's single wiring compartment can not absolutely protect
against physical contact between multiple circuits, it is required
that all wiring used must have an insulation rating of 300V minimum, and a temperature rating of 80˚ C (176˚ F) minimum.
Protective Earthing:
Each MK-2 is provided with a "protective conductor terminal"
which shall be terminated to the local earth ground potential to
eliminate shock hazard in the unlikely event of internal insulation breakdown. Select wire size that can carry in excess of the
sum of all circuit's maximum amperage.
Power Input:
The MK-2 is designed with a universal power supply that can
accept a wide range of AC and DC voltages (see Specifications
to insure compatibility). Select wire size that can deliver suitable voltage and current for the application. Connect power as
shown in Figure 8. The terminal block can be unplugged from
its socket for your convenience. When connecting a DC
source, observing polarity is not critical, but it is suggested to
follow diagram as a matter of good installation practice.
Split Architecture Interconnection (See Figure 9)
The interconnection of the remote probe and remote electron-
cs is limited in distance in order to maintain the sensing capa-
i
bility. Separation distances greater then the standard 12 feet
(3.6m) or use of an interconnection cable other than Monitor's
should not be attempted without the approval of Monitor's
Application Engineers.
IRING DIAGRAM
K-2 REMOTE ELECTRONICS TO REMOTE PROBE
M
W
Output Relay Contacts:
The MK-2 is equipped with two sets of isolated contacts (DPDT)
which indicates whether or not material is being detected within
the vessel. This output is also influenced by the selection of the
"fail-safe" switch as described in the "Calibration" section of this
manual. The designations on the circuit board relate to the contact status when the material is "not" sensed and the fail-safe
switch is in the "low" mode. These contacts can be connected to
any type of control device, provided that ratings are observed
(see Specifications). Select wire size that can deliver suitable
voltage and current for the application.
Figure 8
6
]
Figure 9
5
C A L IBR AT ION
SESSENSOR CONTSENSENSSENSOSENSORSENSOR SENSOR CSENSOR COSENSOR CONSENSOR CONTROLS & INDICASENSOR CONTRSENSOR CONTROSENSOR CONTROLSENSOR CONTROLSSENSOR CONTROLS SENSOR CONTROLS &SENSOR CONTROLS & SENSOR CONTROLS & ISENSOR CONTROLS & INSENSOR CONTROLS & INDSENSOR CONTROLS & INDISENSOR CONTROLS & INDICSENSOR CONTROLS & INDICATSENSOR CONTROLS & INDICATOSENSOR CONTROLS & INDICATORSSENSOR CONTROLS & INDICATORSENSOR CONTROLS & INDICATORS
TERMITTETERTERMTERMINTERMINALTERMINATERMINAL BLTERMINAL TERMINAL BTERMINAL BLOTERMINAL BLOCTERMINAL BLOCKTERMINAL BLOCK
C
TERMINAL BLOCK
CO
TERMINAL BLOCK
COM
TERMINAL BLOCK
COM1
TERMINAL BLOCK
COM1 NC
TERMINAL BLOCK
COM1
TERMINAL BLOCK
COM1
TERMINAL BLOCK
COM1 N
TERMINAL BLOCK
COM1 NC2
TERMINAL BLOCK
COM1 NC21
TERMINAL BLOCK
COM1 NC21 NO1
TERMINAL BLOCK
COM1 NC21
TERMINAL BLOCK
COM1 NC21 N
TERMINAL BLOCK
COM1 NC21 NO
TERMINAL BLOCK
COM1 NC21 NO1
NO2NNONO2 NCNO2 NO2 NO2 NNO2 NC2NO2 NC2 CNO2 NC2 NO2 NC2 NO2 NC2 CONO2 NC2 COMNO2 NC2 COM2NO2 NC2 COM2
OUTP
NO2 NC2 COM2
O
NO2 NC2 COM2
OU
NO2 NC2 COM2
OUT
NO2 NC2 COM2
OUTPU
NO2 NC2 COM2
OUTPUT
NO2 NC2 COM2
OUTPUT
(DEPL
NO2 NC2 COM2
OUTPUT
(
NO2 NC2 COM2
OUTPUT
(D
NO2 NC2 COM2
OUTPUT
(DE
NO2 NC2 COM2
OUTPUT
(DEP
NO2 NC2 COM2
OUTPUT
(DEPLU
NO2 NC2 COM2
OUTPUT
(DEPLUGGABL
NO2 NC2 COM2
OUTPUT
(DEPLUG
NO2 NC2 COM2
OUTPUT
(DEPLUGG
NO2 NC2 COM2
OUTPUT
(DEPLUGGA
NO2 NC2 COM2
OUTPUT
(DEPLUGGAB
NO2 NC2 COM2
OUTPUT
(DEPLUGGABLE)
NO2 NC2 COM2
OUTPUT
(DEPLUGGABLE
NO2 NC2 COM2
OUTPUT
(DEPLUGGABLE)
TERMI
NO2 NC2 COM2
OUTPUT
(DEPLUGGABLE)
T
NO2 NC2 COM2
OUTPUT
(DEPLUGGABLE)
TE
NO2 NC2 COM2
OUTPUT
(DEPLUGGABLE)
TER
NO2 NC2 COM2
OUTPUT
(DEPLUGGABLE)
TERM
NO2 NC2 COM2
OUTPUT
(DEPLUGGABLE)
TERMIN
NO2 NC2 COM2
OUTPUT
(DEPLUGGABLE)
TERMINAL
NO2 NC2 COM2
OUTPUT
(DEPLUGGABLE)
TERMINA
NO2 NC2 COM2
OUTPUT
(DEPLUGGABLE)
TERMINAL BL
NO2 NC2 COM2
OUTPUT
(DEPLUGGABLE)
TERMINAL
NO2 NC2 COM2
OUTPUT
(DEPLUGGABLE)
TERMINAL B
NO2 NC2 COM2
OUTPUT
(DEPLUGGABLE)
TERMINAL BLO
NO2 NC2 COM2
OUTPUT
(DEPLUGGABLE)
TERMINAL BLOC
NO2 NC2 COM2
OUTPUT
(DEPLUGGABLE)
TERMINAL BLOCK
NO2 NC2 COM2
OUTPUT
(DEPLUGGABLE)
TERMINAL BLOCK
PUPPUSHPUSPUSHBUPUSHBPUSHBUTTOPUSHBUTPUSHBUTTPUSHBUTTONPUSHBUTTON
SYSTEM
PUSHBUTTONSPUSHBUTTONSYPUSHBUTTON
SYS
PUSHBUTTON
SYST
PUSHBUTTON
SYSTE
PUSHBUTTON
SYSTEM RESET
PUSHBUTTON
SYSTEM
PUSHBUTTON
SYSTEM R
PUSHBUTTON
SYSTEM RE
PUSHBUTTON
SYSTEM RES
PUSHBUTTON
SYSTEM RESE
PUSHBUTTON
SYSTEM RESET
PO
PUSHBUTTON
SYSTEM RESET
P
PUSHBUTTON
SYSTEM RESET
POWER
PUSHBUTTON
SYSTEM RESET
POW
PUSHBUTTON
SYSTEM RESET
POWE
PUSHBUTTON
SYSTEM RESET
POWER
BUTTONBBUBUTBUTTBUTTOBUTTON
PU
BUTTONPBUTTON
PUSH
BUTTON
PUS
BUTTON
PUSH-
BUTTON
PUSH-
SLIDE SWSSLSLISLIDSLIDESLIDE SLIDE SSLIDE SWITCHSLIDE SWISLIDE SWITSLIDE SWITCSLIDE SWITCH
LE
SLIDE SWITCH
L
SLIDE SWITCH
LED
SLIDE SWITCH
LED (
SLIDE SWITCH
LED
SLIDE SWITCH
LED (R
SLIDE SWITCH
LED (RE
SLIDE SWITCH
LED (RED
SLIDE SWITCH
LED (RED)
SLIDE SWITCH
LED (RED)
O
P
SLIDE SWITCH
LED (RED)
O
SLIDE SWITCH
LED (RED)
OP
E
SLIDE SWITCH
LED (RED)
O
PER
SLIDE SWITCH
LED (RED)
O
PERATION
SLIDE SWITCH
LED (RED)
O
PERA
SLIDE SWITCH
LED (RED)
O
PERAT
SLIDE SWITCH
LED (RED)
O
PERATI
SLIDE SWITCH
LED (RED)
O
PERATIO
SLIDE SWITCH
LED (RED)
O
PERATION
OUTP
SLIDE SWITCH
LED (RED)
O
PERATION
O
SLIDE SWITCH
LED (RED)
O
PERATION
OU
SLIDE SWITCH
LED (RED)
O
PERATION
OUT
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPU
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE M
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
F
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FA
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAI
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAIL
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILS
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSA
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAF
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MO
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MOD
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUNC
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
F
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FU
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUN
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUNCTION
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUNCT
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUNCTI
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUNCTIO
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUNCTION
A
DJUSTM
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUNCTION
A
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUNCTION
AD
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUNCTION
ADJ
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUNCTION
ADJU
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUNCTION
ADJUS
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUNCTION
ADJUST
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUNCTION
ADJUSTM
E
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUNCTION
ADJUST
MENT
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUNCTION
ADJUST
MEN
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUNCTION
ADJUST
MENT
TI
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUNCTION
ADJUST
MENT
T
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUNCTION
ADJUST
MENT
TIME DEL
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUNCTION
ADJUST
MENT
TIM
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUNCTION
ADJUST
MENT
TIME
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUNCTION
ADJUST
MENT
TIME
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUNCTION
ADJUST
MENT
TIME D
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUNCTION
ADJUST
MENT
TIME DE
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUNCTION
ADJUST
MENT
TIME DELA
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUNCTION
ADJUST
MENT
TIME DELAY
SLIDE SWITCH
LED (RED)
O
PERATION
OUTPUT
FAILSAFE MODE
FUNCTION
ADJUST
MENT
TIME DELAY
PUPPUSHPUSPUSHBUPUSHBPUSHBUTTOPUSHBUTPUSHBUTTPUSHBUTTONPUSHBUTTON
CAL
PUSHBUTTONCPUSHBUTTONCAPUSHBUTTON
CALI
PUSHBUTTON
CALIBRATI
PUSHBUTTON
CALIB
PUSHBUTTON
CALIBR
PUSHBUTTON
CALIBRA
PUSHBUTTON
CALIBRAT
PUSHBUTTON
CALIBRATIO
PUSHBUTTON
CALIBRATION
PUSHBUTTON
CALIBRATION
LE
PUSHBUTTON
CALIBRATION
L
PUSHBUTTON
CALIBRATION
LED
PUSHBUTTON
CALIBRATION
LED (
PUSHBUTTON
CALIBRATION
LED
PUSHBUTTON
CALIBRATION
LED (Y
PUSHBUTTON
CALIBRATION
LED (YE
PUSHBUTTON
CALIBRATION
LED (YELLOW
PUSHBUTTON
CALIBRATION
LED (YEL
PUSHBUTTON
CALIBRATION
LED (YELL
PUSHBUTTON
CALIBRATION
LED (YELLO
PUSHBUTTON
CALIBRATION
LED (YELLOW)
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTIPUSHBUTTON
CALIBRATION
LED (YELLOW)
DPUSHBUTTON
CALIBRATION
LED (YELLOW)
DEPUSHBUTTON
CALIBRATION
LED (YELLOW)
DETPUSHBUTTON
CALIBRATION
LED (YELLOW)
DETEPUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECPUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTPUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTIOPUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTIONPUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
L
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
L E
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (G
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GR
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GRE
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREE
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CAL
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
C
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CA
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALI
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATI
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIB
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBR
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRA
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRAT
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATIO
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L E
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
LE
DS (RED)
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
ED
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
EDS
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
EDS
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
EDS (
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
EDS (R
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
EDS (RE
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
EDS (RED
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
EDS (RED)
SE
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
EDS (RED)
S
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
EDS (RED)
SENSITIVITY STATUS
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
EDS (RED)
SEN
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
EDS (RED)
SENS
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
EDS (RED)
SENSI
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
EDS (RED)
SENSIT
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
EDS (RED)
SENSITI
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
EDS (RED)
SENSITIV
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
EDS (RED)
SENSITIVI
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
EDS (RED)
SENSITIVIT
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
EDS (RED)
SENSITIVITY
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
EDS (RED)
SENSITIVITY
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
EDS (RED)
SENSITIVITY S
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
EDS (RED)
SENSITIVITY ST
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
EDS (RED)
SENSITIVITY STA
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
EDS (RED)
SENSITIVITY STAT
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
EDS (RED)
SENSITIVITY STATU
PUSHBUTTON
CALIBRATION
LED (YELLOW)
DETECTION
LED (GREEN)
CALIBRATION
L
EDS (RED)
SENSITIVITY STATUS
PUPPUSHPUSPUSHBUPUSHBPUSHBUTTOPUSHBUTPUSHBUTTPUSHBUTTONPUSHBUTTON
SE
PUSHBUTTONSPUSHBUTTON
SENSITIVITY
PUSHBUTTON
SEN
PUSHBUTTON
SENS
PUSHBUTTON
SENSI
PUSHBUTTON
SENSIT
PUSHBUTTON
SENSITI
PUSHBUTTON
SENSITIV
PUSHBUTTON
SENSITIVI
PUSHBUTTON
SENSITIVIT
PUSHBUTTON
SENSITIVITY
(RED)
PUSHBUTTON
SENSITIVITY
(
PUSHBUTTON
SENSITIVITY
(R
PUSHBUTTON
SENSITIVITY
(RE
PUSHBUTTON
SENSITIVITY
(RED
PUSHBUTTON
SENSITIVITY
(RED)
"YES" L
PUSHBUTTON
SENSITIVITY
(RED)
"
PUSHBUTTON
SENSITIVITY
(RED)
"Y
PUSHBUTTON
SENSITIVITY
(RED)
"YE
PUSHBUTTON
SENSITIVITY
(RED)
"YES
PUSHBUTTON
SENSITIVITY
(RED)
"YES"
PUSHBUTTON
SENSITIVITY
(RED)
"YES"
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LE
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESEN
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
P
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PR
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRE
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRES
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESE
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENC
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
A
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
MA
TERI
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
AT
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATE
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATER
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIA
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(
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(RED)
"YES" LED
PRESENCE
M
ATERIAL
(G
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GR
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GRE
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREE
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
" NO"
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"N
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LE
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO"
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" L
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESEN
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
P
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PR
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRE
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRES
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESE
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESENC
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESENCE
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESENCE
MA
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESENCE
M
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESENCE
MATERI
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESENCE
MAT
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESENCE
MATE
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESENCE
MATER
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESENCE
MATERIA
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESENCE
MATERIAL
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESENCE
MATERIAL
MA
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESENCE
MATERIAL
M
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESENCE
MATERIAL
MATERI
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESENCE
MATERIAL
MAT
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESENCE
MATERIAL
MATE
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESENCE
MATERIAL
MATER
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESENCE
MATERIAL
MATERIA
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESENCE
MATERIAL
MATERIAL
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESENCE
MATERIAL
MATERIAL
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESENCE
MATERIAL
MATERIAL
TEST
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESENCE
MATERIAL
MATERIAL
T
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESENCE
MATERIAL
MATERIAL
TE
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESENCE
MATERIAL
MATERIAL
TES
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESENCE
MATERIAL
MATERIAL
TEST
PUSHBUTTON
SENSITIVITY
(RED)
"YES" LED
PRESENCE
M
ATERIAL
(GREEN)
"NO" LED
PRESENCE
MATERIAL
MATERIAL
TEST
Calibration:
The calibration of the MK-2 is accomplished by the push-button
designated “CAL” (See Figure 10). This feature allows the unit
to ignore any initial capacitance caused by the vessel configu-
ation or material build-up on the probe and driven shield. This
r
procedure can be done at any time after installation in order to
accommodate for any changes in the configuration of the probe
or vessel, or extreme product build-up.
1) To initiate the calibration feature, ensure that the probe is
not submerged in the material.
2) Press and release the “CAL” button. The “CAL” LED will
flash for a short period and then remain illuminated when
complete denoting proper calibration.
Test Function:
The MK-2 features a unique test feature that is initiated by the
TST” push-button. This feature allows users to test the oper-
“
ation and installation of the unit by effectively placing a capacitance value, via the electronics, directly on the probe.
1) To activate the test feature, ensure the unit is calibrated
properly, indicated by the illuminated “CAL” LED, and that
the probe is not submerged in the material.
2) Press and hold the “TST” push-button. The unit will respond
by illuminating the “DET” LED when the sensing circuit of
the MK-2 unit is operating correctly. If push-button is held
long enough to time through the delay operation, the “OPR”
LED and output relay will activate as well. Failure of the
“DET” LED to illuminate indicates the MK-2 is out of calibra tion or that it is not sensing properly. Should this occur, con sult the troubleshooting section of this bulletin.
3) Releasing the “TST” push-button will remove the test
capacitance from the sensor and place the sensor into nor mal operating mode.
Delay:
This function provides a time delay from when the unit first
enters a detect mode, to when the relay output is activated. It
also acts in reverse, delaying the response from when the unit
enters a non-detect mode, to when the relay output is deactivated. Clockwise rotation of the single-turn adjustment will
increase time delay from .25 to 15 seconds. The unit must
enter the new sense state (either material sensed or material
not sensed), and remain in that mode for the selected time
delay period, before the mode becomes active at the relay output. If the sense state changes before the delay period
expires, the timing cycle will start over.
Figure 10
Sensitivity:
The sensitivity of the MK-2 relates to the amount of capacitance
(in excess of the calibration value) required to place the unit
into a detect mode. Materials with lower dielectric values will
require a lower numbered sensitivity setting for maximum sensing capability. Materials with higher dielectric values allow for
a higher numbered sensitivity setting, which provides for an
additional level of build-up immunity. That is, sensitivity #1 is
most sensitive, while sensitivity #4 is least sensitive. The sensitivity of the MK-2 is selected by pressing and releasing the
“SEN” push-button which causes the sensitivity level to
sequence to the next incremental setting. The current sensitivity setting is indicated by whichever sensitivity LED is illuminated, and correlates to the values shown in Figure 11.
Figure 11
6
Fail-safe: (See Figure 12)
The term fail-safe refers to the output signal condition which
occurs with a loss of power to the probe. A switch permits
selection of either low or high fail-safe.
1) High Fail-Safe - The relay will de-energize when material
is sensed at high level or with power loss.
2) Low Fail-Safe - The relay will de-energize when material
is below low level or with power loss.
NOTE: The designations on the electronics label refer to the
relay contact status when no material is sensed and low failsafe is selected (Relay is de-energized). The designations are
reversed when no material is sensed and high fail-safe is
selected (Relay is energized).
Figure 12
Indicators:
1) “CAL” green LED - Its status describes the “calibration”
condition of the MK-2. Illumination indicates that the sensor
has successfully been calibrated. Flashing indicates that a
calibration is in process.
2) “SEN” Red LED - Their status describes how “sensitive” the
MK-2 will be to the target material. The particular LED illu-
minated indicates which sensitivity selection has been
made.
3) “DET” yellow LED - Its status describes the “detection/
sensing” condition of the MK-2. Illumination indicates that
the amount of capacitance established by the “sensitivity
selection” has been detected. Its status is not affected by
the time delay setting.
4) “OPR” Red LED - Its status describes the “operate/output”
condition of the MK-2. Illumination indicates that the relay
output is in the “operate/material sensed” condition. Its state
is influenced by the time delay setting but not by the fail-safe
setting.
5) Material Presence "Y" Red LED - Its status matches the
indication of the "OPR" Red LED. That is, illumination indi cates that the relay output is in the "operate/material
sensed" condition. This LED can be viewed externally
through the lens in the top of the cover (ordinary location
units only). Illumination also indicates that power is present
at the MK-2.
6) Material Presence "N" Green LED - Its status is opposite
the indication of the Material Presence "Y" Red Led and the
"OPR" Red LED. That is, illumination indicates that the
relay output is in the "non-operate/no material sensed" con dition. This LED can be viewed externally through the lens
in the top of the cover (ordinary location units only). Illumi nation also indicates that power is present at the MK-2.
Initialization/Self-Verification Mode:
The microcontroller-based electronics will flash the Material
Presence "Y" Red and "N" Green LEDs in either of the following
situations:
1) Power-up initialization- Whenever power is first applied, the
MK-2 spends roughly two (2) seconds to settle into a normal
state. During this time, the LEDs will flash.
2) Self-Verification error- During normal operation, the MK-2
continually checks itself for proper processing. If an abnor mal condition is detected, the MK-2 will force the relay into
the state related to the "fail-safe" selection and will flash the
Material Presence LEDs.
Calibration Procedure:
1) Select the fail-safe setting appropriate for the application.
2) Set the time delay desired, from .25 to 15 seconds.
3) Select sensitivity 1, 2, 3 or 4. Figure 10 provides a guide for
initial setup. This may have to be re-selected depending
upon the actual application characteristics.
4) Ensure the probe is not submerged in the material.
5) Press and release the “CAL” button. The green “CAL” LED
will flash, then remain illuminated, indicating a successful
and complete calibration.
TRO UB L ESH OO TI NG
PROBLEM: Sensor does not detect material.
CAUSE/SOLUTION:
1) Verify that power is applied to the sensor. One of four
“SEN” indicators should always be lit.
2) Verify condition of “CAL” LED when material is not
present. If not lit, recalibrate the sensor.
3) Verify continuity between probe mount and vessel wall.
If poor continuity exists, connect a ground wire between
the housing and vessel wall.
4) Verify sensitivity setting. Move sensitivity selection to a
lower numbered setting, therefore making the probe
more sensitive to “difficult to sense” materials.
5) Verify probe coverage when sensing is expected. The
sensor is not designed to be “tip sensitive”. Permit sig nificant probe coverage before expecting material
sensing.
6) Verify connection of the electronic module to the probe.
7) Verify circuitry operation by using the TEST function, as
described in this manual. If improper operation per sists, consult factory.
PROBLEM: Sensor remains in “DET” mode even when
material is absent.
CAUSE/SOLUTION:
1) Verify the active probe is not in direct contact with any
internal vessel structure. If so, reposition sensor.
2) Verify sensitivity setting. Move sensitivity selection to a
higher numbered setting, therefore making the probe
less sensitive to “easy to sense” materials. Sensitivity
#4 is appropriate for highly conductive materials (i.e.
water based products).
3) Examine build-up on probe surface. Clean probe if
necessary.
4) Only as last resort, recalibrate sensor. If improper
operation persists, consult factory.
PROBLEM: Output contact perform opposite of
designations (N/O, N/C).
CAUSE/SOLUTION:
1) Designations on PCB relate to relay status when in
“Fail-safe Low” mode and when no material is sensed.
If “Fail-safe High” mode is used, the designations are
reversed. Swap the wire terminations of N/O and N/C if
necessary.
PROBLEM: Sensor does not respond to any switch
activation.
CAUSE/SOLUTION:
1) Press and release reset switch located on the right side
of the control panel. The switch can be accessed
through a small hole in the label and will re-boot inter nal software. Wait approximately 2 seconds for soft ware to reset. If improper operation persists, consult
factory.
7
MAI NT E N A NCE
Fuse Replacement:
he fuse incorporated into the MK-2 PCB is not intended for
T
operator replacement. If necessary, consult the factory for
additional technical assistance or for return of the MK-2.
Preventive Maintenance:
he MK-2 design is virtually maintenance free. In typical appli-
T
cations, once the sensor is properly calibrated, it will operate
without any further attention. In abrasive applications, probe
condition should be periodically observed. Although the
probe's construction is made with high quality engineering plastics, heavy abrasion can wear away the probe's insulators. This
can influence the calibration and eventually lead to sensor failure. The electronics are housed in a weatherproof enclosure.
In addition the PCBs are conformal coated with a siliconebased material to further prevent electrical influence by condensation. The sensor electronics should periodically be
observed for any signs of contamination caused by improper
enclosure protection (i.e. insure cover is fully engaged, and that
wire entries are properly sealed.)
Cleaning Requirements:
Environmental and hazardous location protection is highly
dependent on the proper installation of the cover to the housing. A lubricant is applied to the housing/cover threads to
enhance ability to twist-on twist-off cover. Clean and re-lubricate threads if necessary to insure trouble-free operation. Do
not physically alter threads in anyway otherwise environmental
or hazardous location protection could be compromised.
The driven shield feature of the MK-2 is designed to minimize
the need for cleaning the probe portion of the sensor. In applications where material build-up is so excessive that electronics
can not adequately compensate, probe cleaning may be necessary. If so, wipe the probe with a clean damp cloth from the
housing to the probe tip.
MEC HA N I C A L S
DIMENSIONS ARE SHOWN IN INCHES WITH MILLIMETER EQUIVALENT IN BRACKETS
Standard and Food Grade Probe
Stub Probe
Cable Extension Probe
8
MEC HA N I C A L S
6
.66.946.96.94
176.117176176.3176.3
4.44.424.44.42
112.111112112.3112.3
S
TD UNLESS SPECIFIED
X
X" [XXmm]
.
31 x .50 SLOT..3.31.31 .31 x.31 x .31 x ..31 x .5.31 x .50.31 x .50 .31 x .50 S.31 x .50 SL.31 x .50 SLO.31 x .50 SLOT
[
7.9 x 12.7]
.31
x .50 SLOT
[
.31 x .50 SLOT
[7
.31
x .50 SLOT
[7.
.31
x .50 SLOT
[7.9
.31
x .50 SLOT
[7.9
.31
x .50 SLOT
[7.9
x
.31
x .50 SLOT
[7.9
x
.31
x .50 SLOT
[7.9
x 1
.31
x .50 SLOT
[7.9
x 12
.31
x .50 SLOT
[7.9
x 12.
.31
x .50 SLOT
[7.9
x 12.7
.31
x .50 SLOT
[7.9
x 12.7]
1
75.117175175.5175.5
6
.66.916.96.91
31.33131.731.7
1
.11.251.21.25
4
.44.004.04.00
101.110101101.6101.6
6.66.506.56.50
1
65.116165165.0165.0
6
.66.506.56.50
1
65.116165165.0165.0
IMENSIONS ARE SHOWN IN INCHES WITH MILLIMETER EQUIVALENT IN BRACKETS
D
Remote Electronics (Ordinary Location)
Remote Electronics (Hazardous Location)
Pipe Extension Probe Lagged Housing Version
9
B U L L E T I N
434
S AFE T Y
General Safety
CAUTION: It is essential that all instructions in this manual be followed to
ensure proper operation of the equipment and safety of operating personnel. Use of equipment not specified herein, may impair protection provided by equipment. The use of this symbol is used throughout manual to
highlight important safety issues. Please pay particular attention to these
items.
Electrical Shock Caution
Certain MK-2 models are powered with HIGH VOLTAGE. No operator
serviceable parts are inside. All servicing is to be performed by qualified
personnel. Each MK-2 is provided with a "protective conductor terminal"
which shall be terminated to earth ground potential (See Electrical
Installation). This product's design complies with EN61010-1 installation
category II and pollution degree 2.
Hazardous Location Caution
Certain MK-2 models can be used in Hazardous Locations (See
Specifications). These models shall only be used in applications covered
by stated ratings or those considered non-hazardous. Failure to comply
could result in damage to personnel and property. The following must be
maintained to assume safe operation:
1) Enclosure integrity - The dimensions of the housing, cover or probe
shall not be altered.
2) Electrical integrity - Substitution of electrical components may impair
intrinsic safety and therefore is prohibited.
3) Maintenance - Power to all circuits must be disconnected before con-
ducting any investigation or maintenance.
Electromagnetic Compatibility (EMC)
The MK-2 was tested and found to comply with the standards listed below.
The MK-2 should not be used in residential or commercial environments.
Compliance to EMC standards was demonstrated by means of a test
setup using the following installation methods.
1) MK-2 enclosure was connected to earth ground (protective earth).
2) No specific wiring convention was used to supply power or
to retrieve output signal from the MK-2.
EMC Emissions:
Meets EN 61326-1 Electrical Equipment for Control Use, EMC
EN 55011 Radiated and conducted emissions
(Class A- industrial)
EN 61000-3 Fluctuations/Flicker
Meets FCC Part 15B: RF Devices, Unintentional Radiators
CISPR 11 Radiated and conducted emissions
(Class A- industrial)
EMC Immunity:
Meets EN 61326-1 Electrical Equipment for Control Use,
EMC
IEC 1000-4-2 Electrostatic discharge (industrial)
IEC 1000-4-3 RF radiated EM fields (industrial)
IEC 1000-4-4 Electrical fast transients (industrial)
IEC 1000-4-5 Electrical surges (industrial)
IEC 1000-4-6 RF conducted EM energy (industrial)
IEC 1000-4-8 Power frequency magnetic fields
(industrial)
IEC 1000-4-11 Source voltage deviation
Ryton®- Trademark of Phillips Chemical Co. Teflon®- Trademark of DuPont Chemical Co.
Monitor Technologies LLC
44W320 Keslinger Rd.
t
Elburn, IL 60119 t630-365-9403 t800-766-6486 tFax: 630-365-5646 twww.monito r t ech.com
SPE CI F I C ATI ON S
ower: 48-240 VAC
P
ltitude: 6562 ft (2000 m) max
A
Installation Category: II
Pollution Degree: 4 (reduced to 2 by enclosure) Suitable for indoor/outdoor use
Ambient Op Temp: -40˚ F (-40˚ C) to +150˚ F (+65˚ C)
Internal Bin Temp: To +176˚ F (+80˚ C) w/alum. mount (<104˚ F (40˚ C) ambient)
*
To +400˚ F (+204˚ C) w/SS mount (<122˚ F (50˚ C) ambient)
utput Relay: DPDT, 5A @ 250VAC, 30VDC maximum
O
ndicators: “DET” yellow LED illuminates when material is sensed
I
“OPR” red LED illuminates to indicate output switching
“CAL” green LED illuminates to indicate proper calibration
“SEN” bank of four LEDs indicate the sensitivity setting
xternal Indicators: Red and green LEDs indicating power and operating mode
E
(Ordinary location units only)
ensitivity: Switch selectable 0.5pf, 2.6pf, 8.3pf, 18.0pf
S
tability:
S
Time Delay: 0.25 to 15 sec single-turn adj. for delay to activate & delay to de-activate
Fail-Safe: Switch selectable - HI/LO
Build-up Immunity: Protected via driven shield to 150 ohm load
Enclosure: Cast alum screw-on cover, polyester pwdr coat,
NEMA 4 / ENCLOSURE TYPE 4
onduit Connection: Two (2) 3/4” NPT connections (M20 cable glands provided when
C
1-1/2” BSPT process connection is specified)
*Approvals: CSA
*
CSA
CSA
CHINA RoHS 2
Standard/Food Grade Probe
Mounting: 1-1/4” NPT alum, R 1-1/2 (BSPT 1-1/2), or combo 3/4” NPT 316SS and
1-1/4” NPT alum
Probe Material: 3/8in(9.5mm) dia. 316SS probe & guard, Ryton
Probe Length: 16in(406mm) from alum mounting
Temp (Probe Only): Ryton
Pressure: 50 psi(3.5 bar) max (alum connection);150 psi(10 bar) max (3/4” NPT SS)
Stub Probe
Mounting: 1-1/4” NPT alum, R 1-1/2 (BSPT 1-1/2), or combo 3/4” NPT 316SS and
1-1/4” NPT alum
Probe Material: 3/8in(9.5mm) dia. 316SS probe & guard, Ryton
Probe Length: 9in (229mm) from aluminum mounting
Temp (Probe Only): Ryton
Pressure: 50 psi(3.5 bar) max (aluminum); 150 psi(10 bar) max (3/4 NPT SS)
Cable Extension Probe
Mounting: 1-1/4” NPT alum, R 1-1/2 (BSPT 1-1/2), or combo 3/4” NPT 316SS and
1-1/4” NPT alum
Probe Material: 1/8in(3.2mm) diameter 316 SS Teflon
Cable Length; Customer specified from 17” (432 mm) up to 50 ft (15 m)
overall insertion from alum mtg
Temp (Probe Only): +300˚ F (+148˚ C) max
Pressure: 50 psi(3.5 bar) max (1-1/4 NPT alum); 150 psi(10 bar) max (3/4 NPT SS)
Pipe Extension Probe
Mounting: 1-1/4” NPT alum
Lag Material: Galvanized or 316SS
Pipe Ext Length: Customer specified from 22” (559 mm) up to 144in (3.6m) overall insertion
Interface To: Standard or Food Grade (See applicable specs)
Lagged Housing Version
Mounting: 3/4” NPT 316SS
Lag Material: Galvanized or 316SS
Lag Length: Customer specified from 7 to 24 in (178 to 610 mm)
Interface To: Standard Probe only (See applicable specs)
Split Architecture
Elec. Enclosure: Cast Aluminum, screw-on cover, polyester powder coat (HL)
Fiberglass enclosure (OL)
Cable: 12 ft (3.6m), 22 awg co-ax / 18 awg wire
Max Bin Temp: Ryton
*Influenced by mounting, material thermal conductivity and ambient temperature.
**Hazardous location approvals on units with Pipe Extension or Lagged Probes with integral elec-
tronics/probe are CSA
approvals are not available on the galvanized version). Hazardous location approvals for Split
Architecture remote electronics are Class II, Groups E, F & G. All probe versions, except the gal-
vanized version of the pipe extension or lagged probe unit, are Class I Groups C &D, Class II
Groups E, F & G and Intrinsically Safe.
±
US/C
±
0%, 50/60Hz; 24-48VDC ±10%, 3W
1
0.01pf per degree F (±0.018pf per degree C) @ 0.5pf setting
SA
rdinary Locations, CE Mark(Ordinary location only)
C
O
US
C
CSAC: Class I Groups C,D, Exp. Proof & Intrinsically Safe
S
U
CSAC: Class II Groups E, F & G, Dust Ignition Proof & Intrinsically Safe
US
®
r equiv. & Nylon insulators
o
®
or equiv.: +450˚ F (+232˚ C) max; Nylon: +300˚ F (+148˚ C) max
®
or equiv. & Nylon insulators
®
or equiv.: +450˚ F (+232˚ C) max; Nylon: +300˚ F (+148˚ C) max
®
jkt’d cable, Nylon insulator
®
or equiv. probe: 450˚ F (+232˚ C); Nylon: 300˚ F (+148˚ C)
Class II Groups E, F & G (SS version ONLY. Hazardous location
WA RR A NT Y
Monitor Technologies LLC warrants each TrueCap®RF capacitance sensor it manufactures
to be free from defects in material and workmanship under normal use and service for two
(2) years from the date of purchase. The purchaser must notify Monitor of any defects within
the warranty period, return the product intact, and prepay transportation charges. The obligation of Monitor Technologies LLC under this warranty is limited to repair or replacement at
its factory. This warranty does not apply to any product which is repaired or altered outside
of Monitor Technologies’ factory, or which has been subject to misuse, negligence, accident,
incorrect wiring by others, or improper installation.
JCS JSC OCT 26 2018 DOC-001-434A 16
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