ARJAY ENGINEERING 2852-HCF2 Manuel utilisateur

MODEL 2852-HCF2

Floating Oil Spill Alarm

User Manual

Technical Support

Continental North America Toll Free 1-(800) 387-9487

Ph: +1 (905) 829-2418 Fx: +1 (905) 829-4701

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

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

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

Model: 2852-HCF2 User Manual Rev: 1.2

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

Model: 2852-HCF2 User Manual Rev: 1.2

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

Model: 2852-HCF2 User Manual Rev: 1.2

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

Model: 2852-HCF2 User Manual Rev: 1.2

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.

Model: 2852-HCF2 User Manual Rev: 1.2

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.

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