ARJAY ENGINEERING 2852-HCF2 User manual

MODEL 2852-HCF2
Floating Oil Spill Alarm
User Manual
Technical Support
Continental North America Toll Free 1-[phone]
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A Product of Arjay Engineering Ltd.
Oakville, Ontario, Canada
www.ArjayEng.com
MODEL:
HARDWARE NO.: 5.1
SOFTWARE NO.:
SERIAL NO.:

The 2852-HCF protects facilities from accidental pumping of
oils to municipal storm drains or streams. Ideal in utilities,
factories, treatment plants & commercial applications.
Anywhere oil on water should be acknowledged.
Reliable monitoring of sumps and containments for oil spills
Over 40 years of capacitance experience stands
behind the 2852-HCF Oil onitor. The unique
floating sensor continuously monitors for the
accumulation of oil at the water surface.
• Floating sensor follows changing water levels
• Alarms on petroleum, synthetic, and
vegetable oils
• Potted stable sensor eliminates
nuisance alarms
The 2852-HCF sensor monitors the surface dielectric
and locks in on the capacitance of the water. Oil
that separates to the surface changes the
capacitance field and activates the relay alarms.
This unit is typically used in sumps or containments
where oil is not typically present. Normal sheens
will not alarm but an upstream leak
or spill that accumulates in the
sump will alarm the monitor. The
floating design allows the unit
to track the changing water
level in the sump and
immediately alert operators,
pumps or valves if there is an
accumulation of oils.
10 meters of coaxial
cable to P C Housing
Optional Intrinsically
Safe Sensor
PVC Sensor Pod
(optional high temperature
materials available)
304 ss floats
Floating Oil Spill Alarm
2852-HCF
Up to 1 Km
P C
Housing
ENGINEERING
Remote Electronics available in
painted steel, SS or
polycarbonate enclosure
optional alarm light and/or buzzer

Arjay Engineering Ltd. 2851 Br ghton Road Oakv lle, Ontar o Canada L6H 6C9
http://www.arjayeng.com telephone: ++1 905-829-2418 N. Amer ca toll free: 1-800-387-9487 fax: ++1 905-829-4701
ENGINEERING
2852-HCF-12b
Features and Benefits
• stable tri-float design follows level changes
• adjustable time delay and sensitivity to
eliminate nuisance alarms
• remote electronics via standard twisted pair
• sensor available Intrinsically Safe for
Hazardous Locations
• waterproof PVC and SS wetted parts allow
for use in harsh environments
• unit also alarms on dry sump conditions to
shut down pumps
• capacitance technology responds to all types
of oils and separated liquids of similar
dielectrics
• alarms at a minimum of 2 mm surface oil,
can be desensitized to 25mm oil
Need to know the oil thickness?
Look to the Arjay 4100-HCF Oil Thickness onitor
Technical Specifications - Control Unit
Operating Temp. -20˚C to +55˚C
Resolution .007% (.07 pF at 1,000 pF)
Accuracy .04% of full scale pF
Power Input 12 vdc or 24 vdc or 100-240 vac +/- 10%
Alarm Relay 2 x 10 amp@240 vac, SPDT, dry
Analog Output 4 mA normal/20 mA alarm
Communication odbus RS-485
Certified UL 61010-1, 2ndEdition
CAN/CSA-22.2 61010-1-4
IEC/EN 61010-1, 2ndEdition
IEC 61326-1
CE Declared
Enclosure Type 4 / IP 66 painted steel
or Type 4X / IP 66 polycarbonate or SS
Optional Light, buzzer, beacon
Technical Specifications - Float Sensor
Operating Temp. 0˚ to +55˚C (optional to 141˚C)
Intrinsic Safety CSA Intrinsically Safe when ordered with
Approved Barrier in Control Unit
Div 1, Class I, Groups A,B,C,D;
Class II, Groups E,F,G;
Class III, Encl.Type 4
Wetted Parts PVC and 304SS
Optional sensor materials are eligible for NACE R-0175 Compliance
2852-HCF
The unique P C circuit design, installed at the probe and
exclusive to Arjay, immediately converts the sensor signal
to a frequency pulse for furtherance to the controller.
Alarm and Status LCD display of alarm
status and menus
RS-485 odbus user interface
4 mA normal/20 mA alarm output
Probe
input
Power
input
Relays
up to 1 km

Model: 2852-HCF2 User Manual Rev: 1.2
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TABLE OF CONTENTS

1.0INSTRUMENT OVERVIEW ............................................................................................3
1.1Features .............................................................................................................3
1.2Model Number vs. Voltage Input........................................................................3
1.3Specifications .....................................................................................................4
2.0INSTALLATION...............................................................................................................6
2.1Controller Installation .........................................................................................6
2.1.1Permanent Power Connection (AC Powered Models only) ................6
2.2Sensor Installation..............................................................................................7
2.3Electrical Installation ..........................................................................................8
2.3.1Input / Output Terminal Specification ..................................................9
2.4Glossary of Symbols ..........................................................................................10
3.0STARTUP AND CALIBRATION......................................................................................11
3.1Startup................................................................................................................11
3.2Menu Flow Chart Background Information ........................................................11
3.2.1Menu Description.................................................................................11
3.2.2Menu Flow Chart .................................................................................11
3.2.3Data Entry............................................................................................12
3.32852 Controller Calibration ................................................................................12
3.3.1Site Calibration ....................................................................................12
4.0SETUP and ALARMS .....................................................................................................13
4.12852 Controller Setup ........................................................................................13
4.22852 Controller Alarms ......................................................................................13
4.32852 Controller Network ....................................................................................14
4.3.1Modbus Configuration .........................................................................14
4.3.22800 Series Modbus Register Mapping ..............................................15
5.0MAINTENANCE ..............................................................................................................16
6.0TROUBLESHOOTING....................................................................................................17
7.0FLOW CHARTS ..............................................................................................................18
TABLE OF FIGURES
Figure 1 – Electrical Installation Overview ..................................................................................... 8

Model: 2852-HCF2 User Manual Rev: 1.2
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1.0 INSTRUMENT OVERVIEW
The Arjay Floating Oil Spill Alarm provides a means for detecting hydrocarbon spills and
separations on a changing water surface. The Arjay Tri-Float design contains a capacitance
sensor that monitors the surface of the water. Water has a high dielectric constant, which results in
a high capacitance reading. When oil (or a similar hydrocarbon or low dielectric liquid) separates to
the surface of the water, the Arjay Tri-Float rises above the water toward the top of the oil. The
dielectric of the oil is substantially lower than water, which results in a dramatic decrease in
capacitance.
The remote mounted Arjay 2852 controller monitors the capacitance change of the Tri-Float and
activates a relay contact for use with alarms, pumps, valves, etc. The sensor requires at least 2
mm of surface oil to alarm.
The complete 2852-HCF2 system consists of the float unit with potted PMC card, and the 2852
controller.
The standard float unit is constructed with a PVC sensor pod and 3 stainless steel floats. The
support arms are stainless steel. The floating sensor is supplied with 100ft of cable to the main
2852 controller. If require more the supplied cable, customer will require a weather-proof splitter
box and extra cable (e.g. Beldon 8772). The main 2852 controller and any splitter box used should
be mounted safely above the water surge level. The PMC card which is potted within the float
sensor translates the capacitance signal from the sensor into a frequency pulse, which can then be
transmitted up to one kilometer to the 2852 controller via 3-wire shielded cable.
The model is intended for use in General Purpose non-hazardous areas. For hazardous location
use refer to Arjay Engineering Ltd. For appropriate model.
1.1 Features
Microprocessor based capacitance Controller
Relay and 4/20mA alarm output
Modbus protocol via RS-485 for access by Arjay handheld, Central Access Panel or
compatible system
Local Auto calibration or remote calibration via network
User specified custom features may be added by contacting Arjay Engineering Ltd.
1.2 Model Number vs. Voltage Input
2852-HCF2-1 100-240 VAC power input
2852-HCF2-3 12 VDC power input
2852-HCF2-4 24 VDC power input

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1.3 Specifications
Power Input: 12 VDC +15% /-10% or 24 VDC +15% /-10%, 250mA maximum
100VAC – 240VAC +/- 10%, 50/60 Hz, 150mA maximum
Note: DC input models must be supplied by Limited Energy power source.
Limited Energy means compliance with one of the following requirements:
- Class 2 circuit according to Canadian Electrical Code, Part, I, C22.1;
- Class 2 circuit according to National Electrical Code, NFPA-70;
- Limited Power Supply (LPS) according to IEC 60950-1;
- Limited-energy circuit according to IEC 61010-1.
Connections to mains supply Permanent (for AC/DC model)
User Interface:
Display & Keypad Two line LCD with Alarm status display, select menu or enter
values by keypad (display is internal to housing and used for
set-up and diagnostics only)
Communication Interface: Modbus (RS485)
Analog /Relay Outputs:
mA Signal Output 4 mA during Normal and 20 mA during an alarm condition, 900
Ohms max OR 450 Ohms max (12VDC Power)
Relay Output
2 SPDT relay, dry, N.O. Contact 5A @ 250 VAC (Resistive) and
N.C. Contact 3A @ 250VAC (Resistive), selectable failsafe or
non-failsafe, selectable high or low acting alarm, programmable
time delay: 0 – 600 seconds
Instrument Performance:
Setpoint Range 2 mm – 25 mm surface oil
Measuring Range 0 - 5000 pF (most applications are 100pF to 1000pF)
Accuracy 0.2% of setpoint based on clean interface
Resolution 0.05% of setpoint via network display
0.002% of Full Scale capacitance via network display
Calibration Single point: Auto calibration
Environmental:
Operating conditions Continuous
Operating Temperature -20 °C to +55 °C controller
0 to +55 °C Float Sensor with potted PMC
Relative humidity 0 to 95% (non-condensing)
Altitude ≤2000 m
Installation Category II
Pollution Degree 2

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Equipment mobility Fixed
Mechanical Specification: Refer to Dimensional Drawing
Enclosure Rating Type 4 / IP65 Painted Steel (Blue)
Type 4x / IP66 Polycarbonate (Gray)
Type 4x / IP66 316 Stainless Steel
Options on Enclosure Buzzer
Pilot Light OR Strobe/Beacon
Custom alarms
Approval Standards: UL / IEC 61010-1, 2nd Edition, 2005-07-22 (Electrical
Equipment for Measurement, Control, and Laboratory Use;
Part 1: General Requirements)
UL file number: E343390
CAN/CSA-22.2 No. 61010-1, 2nd Edition, 2004-07,
(Electrical Equipment for Measurement, Control, and
Laboratory Use; Part 1: General Requirements)
CE: UL / IEC 61010-1; IEC / EN 61000-4; ISO 9001:2008

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2.0 INSTALLATION
NOTE: If any damage to the instrument is found, please notify an Arjay Engineering
representative as soon as possible prior to installation.
2.1 Controller Installation
Choose the mounting location in accordance with good instrument practice. Extremes of ambient
temperature and vibration should be avoided (see specifications and installation drawing).
The 2852 controller may be mounted up to one kilometer from the float sensor using a minimum 20
gauge, 3-wire SHIELDED cable (Belden 8772 or Equivalent).
Check the polarity of the + and - wiring between the controller and the float sensor prior to
powering on the unit; + to Red and - to Black to avoid damage. Shield of cable and clear wire
should be connected to secondary ground terminal marked as . Incoming Earth ground should
be connected to primary ground terminal marked on sub plate.
Important Note: The controller is factory set in a Failsafe mode. This means that the relays
are in an energized state during normal operation. The N.O. relay contact will be held closed and
the N.C. relay contact will be held open during a normal condition. This will allow the relay to return
to its non-energized (shelf) state during an alarm, fault or power failure condition. Wire
accordingly.
Note: Maximum Conduit size for installation size is ¾” FNPT.
2.1.1 Permanent Power Connection (AC Powered Models only)
1) Connection to the building wiring system shall be in accordance with the Canadian
Electrical Code (CEC), Part 1 in Canada, the National Electrical Code, ANSI/NFPA 70 in
the USA, or the local electrical codes of the country where the equipment is being
installed.
2) A disconnecting device is required. The disconnecting means shall disconnect all
current-carrying conductors.
3) 15A circuit breaker or equivalent fuse is required.
4) An external switch or breaker shall be in close proximity to the equipment and within
easy reach of the operator. The switch shall be marked as the disconnecting device for
the equipment and include the symbols to its “ON” and “OFF” positions using the
following symbols:
5) The wiring for AC power should be minimum 18 AWG / 300V or as required by local /
country codes.
6) After field wiring, the primary wires must be secured to the enclosure by tie-wraps to
maintain the separation from the signal wires.
7) Wiring diagram for permanent connection: See drawings at the back of this manual.
8) Use copper conductors only.
Power Off Power On

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2.2 Sensor Installation
Connect the sensor cable to the 2852-HCF2 controller as per drawing attached to this manual
OR download from the website.
Cut back the cable to length so that the float sensor can rest on the water surface at the lowest
water level. As the water rises, the cable will hang into the water. The tri-float configuration is
designed to support the cable and sensor. The maximum water travel distance is 2 meters.
The tri-float sensor is supplied with 30 meters of instrumentation cable between the float and the
2852-HCF2 controller. The sensor should be placed in an area of calm or protected water.
The 2852-HCF2 controller and any splitter box that is used should be mounted above the water
surge level and in a protected area.
NOTE:
To ensure proper operation and electrical safety, make sure the 2852 enclosure is
electrically grounded.
If the equipment is used in a manner not specified by the manufacturer, the
protection provided by the equipment may be impaired.

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2.3 Electrical Installation
Figure 1 – Electrical Installation Overview
TB1/TB2j - Relay Output
2 SPDT relay, Dry, N.O. Contact 5A @ 250 VAC (Resistive) and N.C. Contact 3A @
250VAC (Resistive), selectable failsafe or non-failsafe, selectable high or low acting alarm,
programmable time delay: 0 – 600 seconds
TB3 - Power Input
Power input as per Model. Check if ordered AC or DC. . Earth ground is connected to G.
TB4 - Network Output
Connect RS485 + and – to the network D+ and D-.
TB5 - 4/20 mA Output (+ and -)
The 4/20 mA is a sourced output referenced to Ground. It is not loop powered.
4mA = Normal 20mA = Alarm
TB6 - Probe Input
Connect red wire to ‘+’ , black wire to ‘-‘ between the controller and float sensor. Connect
clear wire and shield to ground terminal . Check polarity to avoid damage.
TB7 – Buzzer / Red Pilot Light Output (Optional)
The connection will be factory wired if ordered.