ARJAY ENGINEERING 2852-LPS User manual

MODEL 2852-LPS WITH S00445C LEAK SENSOR
Area Leak Alarm
User Manual
Technical Support
Continental North America Toll Free 1-[phone]
Ph: [phone] Fx: [phone]
A Product of Arjay Engineering Ltd.
Oakville, Ontario, Canada
www.ArjayEng.com
MODEL:
HARDWARE NO.: 5.1
SOFTWARE NO.:
SERIAL NO.:

Area Leak Alarm
ver 40 years of capacitance experience stands behind the
2852-LPS leak alarm. The sensors continuously monitor for the
accumulation of liquid in a normally dry condition.
• capacitance technology alarms on any liquid
• no moving parts
• remote alarm unit mounts safely away from monitoring area
• available for hazardous rated locations
The 2852-LPS sensor monitors the capacitance field between
the sensor pad and the floor. A single push button calibration
at the controller locks in on the capacitance field of all sensing
pads. Any liquid that intrudes into the pad space will increase
the capacitive field and initiate an alarm.
Reliable monitoring of liquid leaks in containments and floor spaces
2852-LPS
6 meters of co-axial cable
ptional Intrinsically Safe Sensor
sensing puck
explosion proof rigid
probe styles are available
•tank and room leaks
•ndergro nd va lts
•s b floors
•valve and p mp pans
Remote Electronics available
in painted steel, SS or
polycarbonate enclosure
ENGINEERING
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-LPS-12b
• sensor pads can be placed in key locations
and tight spaces
• up to 3 sensor pads can connect to one
control unit
• adjustable time delay and sensitivity to
eliminate nuisance alarms
• remote electronics via standard twisted pair
• sensor available Intrinsically Safe for
Hazardous Locations
• high grade epoxy and PVC wetted parts
allow for corrosive environments
• capacitance technology responds to all
types of liquids
Technical Specifications - Control Unit
perating 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 utput 4 mA normal/20 mA alarm
Communication Modbus 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
ptional Light, buzzer, beacon
Technical Specifications - Sensing Pads
perating Temp. -60˚C to +55˚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 High grade marine epoxy and PVC
(optional PVDF/TFE).
Sensor materials are eligible for NACE MR-0175 Compliance
2852-LPS
Feat res and Benefits
The unique PMC 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 Modbus user interface
4 mA normal/20 mA alarm output
Probe
input
Power
input
Relays
up to 1 km

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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 (Probe Style) .......................................................................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, ALARMS and DIAGNOSTICS .........................................................................13
4.12852 Controller Setup ........................................................................................13
4.22852 Controller Alarms ......................................................................................13
4.32852 Controller Diagnostics...............................................................................14
4.42852 Controller Network ....................................................................................14
4.4.1Modbus Configuration .........................................................................14
4.4.2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

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1.0 INSTRUMENT OVERVIEW
The Arjay Area Leak Alarm provides a means for detecting liquid spills and leaks in containment
bunkers, equipment pans, equipment rooms, sub-floors, or anywhere the presence of a liquid
should be alarmed. The leak probe design allows the sensor to monitor for low dielectric materials
such as diesel, oils etc while maintaining a stable reading during possible shifts in temperature.
The sensing assembly contains a capacitance probe that monitors the air to floor space below and
around the probe. Air has a low dielectric constant, which results in a low capacitance reading.
When a liquid submerges the sensing probe, the capacitive field increases and triggers the alarm.
The system can be sensitized to very low dielectric liquids such as diesel.
The complete 2852-LPS system has two options:
Option 1: Part# S00455A comes with one controller, one PMC 2800TMP and one leak sensor
(S00455C).
Option 2: Part# S00455B comes with two controller, two PMC 2800TMP and two leak sensor
(S00455C).
The capacitance leak sensors are constructed of chemical resistant Teflon, 304/316 stainless steel.
A PMC 2800TMP card is mounted in the sensor junction box which translates the capacitance
signal from the sensor into a frequency pulse, which can then be transmitted back to the 2852
controller via 3-wire shielded cable (50ft of cable supplied with each sensor). There is a built-in
temperature sensor in the PMC 2800TMP which helps compensate for any change in capacitance
due to temperature changes.
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-LPS-1-X 100-240 VAC power input
2852-LPS-3-X 12 VDC power input
2852-LPS-4-X 24 VDC power input
Where “X” = Temperature Comp. circuit.

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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 display of Alarm Status, 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 5 A @ 250 VAC (Resistive) and
N.C. Contact 3 A @ 250VAC (Resistive), selectable failsafe or
non-failsafe, selectable high or low acting alarm, programmable
time delay: 0 – 600 seconds
Instrument Performance:
Setpoint Range of S00455C
Sensing Probe
6mm – 14mm of surface liquid (Dependent on dielectric of
material)
Measuring Range 0 - 5000 pF (most applications are 100pF to 1000pF)
Accuracy 0.2% of setpoint
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 2852-LPS controller
-60 °C to +55 °C PMC 2800TMP
-60 °C to +260 °C Sensor Probe (S00445C)
Relative humidity 0 to 95% (non-condensing)
Altitude ≤2000 m

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Installation Category II
Pollution Degree 2
Equipment mobility Fixed
Mechanical Specification: Refer to Dimensional Drawing
Enclosure Rating Type 4 / IP65 Painted Steel
Type 4x / IP66 Polycarbonate
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. Main controller should
be mounted above any possible flood area. Extremes of ambient temperature and vibration should
be avoided (see specifications and installation drawing).
The 2850 controller may be mounted up to one kilometer from the PMC 2800TMP card (mounted
in sensor junction box) using a minimum 20 gauge, 3-wire SHIELDED cable (Belden 8772 or
Equivalent). 50ft of cable is supplied with each sensor.
Check the polarity of the + and - wiring between the controller and the PMC prior to powering on
the unit; + to + and - to - to avoid damage. Ensure that the temperature wire (Marked “T”) is
connected at the controller temperature connector. Shield of cable should be connected to
secondary ground terminal marked as at controller only (Dead end shield at PMC junction
box). 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 (Probe Style)
Sensors should be mounted in a containment area OR at the lowest elevation in the area so
that the liquid can pool around the sensor.
Once installed, wire each sensor back to the main controller using the 50ft of 3 wire cable
supplied. See electrical detail drawing in back of this manual.
NOTES:
The sensors are not for mounting outdoors or in locations where rain or liquid
splashing may cause nuisance alarms.
To ensure proper operation and electrical safety, make sure the 2852 enclosure and
the PMC junction box are 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/TB2 - 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 ‘+’ to ‘+’ , ‘-‘ to ‘-‘ between the controller and the PMC card. Check polarity to avoid
damage.
TB7 – Temperature Compensation

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2.3.1 Input / Output Terminal Specification
Input Terminals – Power Source
Terminal
ID Overvoltage category Rated Voltage (V) Rated Current/power
(A/W/VA)
___ HZ or
DC Specified Mains
fluctuation
TB3 II 100-240V 150mA 50/60Hz
 10%
TB3 II 12 OR 24V 250mA DC
 15%
 10%
Input Terminals – Measuring Circuits
Terminal ID Function Measurement
Category Nominal a.c. or d.c line to
neutral voltage
/ if CAT I, Max.
transient
overvoltage Ut
Nominal
a.c. or d.c
current
Rating of
insulation
required for
external
circuit
TB6 Frequency I 15V,50mA / 0 -- DI * or RI**
TB4 RS485
Communicati
on
I 5V, 5mA / 0 -- DI * or RI**
* Double Insulation
**Reinforced Insulation
Output Terminals
Terminal ID Function Isolation or
protection Rated V, A Max. V, A Load type and nominal
TB1 Load Relay N.O. Contact
5A@250VAC &
N.C. Contact
3A@250VAC
-- --
TB2 Load Relay N.O. Contact
5A@250VAC &
N.C. Contact
3A@250VAC
-- --
TB5 Current Isolator(optional) - 18V,20mA,
900

- 9V, 20mA,
450

50mA@18V --
TB7 Voltage None 5VDC, 30mA -- Temperature

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2.4 Glossary of Symbols
Attention, consult accompanying documents
Attention, veuillez consulter les documents ci-joints.
Protective Earth
Terre de protection
Fuse
Coupe-circuit; fusible
Direct Current (DC)
Courant continu
Normally open relay contacts
Contacts travail
Normally closed relay contacts
Contacts Repos
Power off
ArróÕ (mise hors tension)
Power on
Marche (mise sous tension)
L
Live
Sous tension
N
Neutral
Neutre
G
Ground
Terre

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3.0 STARTUP AND CALIBRATION
3.1 Startup
Check that the power wiring and PMC wiring are wired in accordance with the electrical
installation drawing.
Power On the unit. Allow a 1 hour warm-up period before calibrating.
The Status LED on the controller circuit board should be green. A red Status LED indicates a
fault condition. If red, check the Troubleshooting section.
The unit is pre-configured and tested at the factory. However, a quick field calibration is
required after power up to tune the sensor to the installation and cable conditions. See
section 3.3 to calibrate the 2852-LPS.
3.2 Menu Flow Chart Background Information
The control setup, diagnostics, and calibration are accessed using the display and keypad on
the controller. The Flow Chart in Section 7.0 provides an overview to the various menus and
features. Keep a copy of the flow chart at hand when accessing the internal controller features.
Below is a description of the menu functions.
3.2.1 Menu Description
Since the 2852 controller has a small LCD, some menu descriptions may be in short form. The
following are the menu descriptions:
Diags: Diagnostics SENSTVTY: Sensitivity
Cal Pts: Calibration points A1: Alarm relay 1
Auto Cal: Auto calibrate A2: Alarm relay 2
Man Cal: Manual calibrate Alrm: Alarm
Cal Ok: Calibrate ok Alrm Lvl: Alarm level
Cal Err: Calibrate err Diff Hi: Differential Hi alarm set value
mA out: mA output Diff Lo: Differential Lo alarm set value
mA Span: mA output span Alrm Del: Alarm Delay
Sec:
Seconds ^SP: Relay Setpoint High action
ALRM CAL: Alarm Calibration vSP: Relay Setpoint Low action
Cal: Calibration point TEMP: Temperature
Tcomp pF: Compensated capacitance Change: Temperature change compare
to Temperature at Calibration
3.2.2 Menu Flow Chart
The 2852 controller will display Normal in its normal operating condition and Alarm during a
liquid leak condition.
From the main menu, you can select Cal Only, View, and Change.
Cal Only allows a user to calibrate after the equipment is installed. The calibration is required
at site after power up or anytime a component or sensor is changed out. A password is
required to enter this and is described in the calibration section.
View allows an operator to view the Calibration setpoints in pF, the Alarms settings (2852
only) such as low or high action, failsafe or non-failsafe and the 0-600 second delay, the
Diagnostics of raw readings and the Setup values such as mA output and ID address. This

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can be viewed without a password and without risk of changing any values. This information
may be requested during technical assistance inquiries.
Change is password protected and allows an operator to enter or change the configuration set-
up values indicated in the View. Changes will be required for the initial setup of relay setpoints,
delays, span etc. or to re-set the values to the factory default.
3.2.3 Data Entry
3.3 2852 Controller Calibration
Power up the 2852 Controller. The status LED should be green. The LCD will scroll to the
normal operating screen after a series of the following screens (each display for 2 sec.). It may
read Normal or Alarm until a calibration is performed.
3.3.1 Site Calibration
A factory pre-configuration and set-up has been defaulted into the 2852-LPS. As such, a user
set-up is not required in the field. A basic calibration is only required.
Be sure all the sensors are wired and placed in their proper location before calibrating.
Allow one hour warmup before proceeding to calibration.
As per the Flow Chart, press and hold Menu key for 5 seconds to enter the main menu. The
display will read the first menu item Cal only. Press select key, enter password ¨2000¨. A pF
reading of the sensor will be displayed. Press select to acknowledge and then press select to
accept the new calibration. To abort, press the MENU key.
If the calibration is successful, the display will return to the main operating display.
To verify the LPS sensor and electronics are responsive, place a hand on the sensing probe.
The controller LCD should start to count down from its preset time-delay. The high dielectric of
your hand simulates a leak condition. Verify that the control unit alarms.
The Alarm1 and Alarm2 LEDs on the circuit will activate red. Remove your hand and the alarm
will clear.
For more accurate test, you may be required to test with the type of liquid that may potentially
spill.
If the calibration is successful, the display will return to the main operating display and show
normal condition.
THIS COMPLETES THE SETUP AND CALIBRATION PROCEDURE FOR THE
2852-LPS Area Leak Alarm
Arjay
2800
S XXXXXX
PMC= EXT
SW X.XXX
HW X.X
LPS
Normal
Normal Screen
NET ID: X

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4.0 SETUP, ALARMS AND DIAGNOSTICS
4.1 2852 Controller Setup
The 2852 controller has the following Setup parameters:
1. Sensitivity
The sensitivity determines the amount of pF change required to cause an alarm. The factory
default setting is 4.0 pF. Increasing the pF value will increase the amount of liquid required
to cause an alarm. Since different liquids have different dielectrics, a pF to mm of liquid level
relationship cannot be factory determined.
As a general guideline for LPS sensor (Rev2.0), the maximum recommended sensitivity
adjustment for Water (High Dielectric Constant of 80) is 20pF and for Oil (Low Dielectric
Constant of 2.2) is 5pF. This is based on detecting a maximum depth of 14mm.
If this setting is changed in the field, it should be tested to confirm an alarm.
2. Alarm Calibration above or below setpoint
This setting advises the controller if the calibrated pF value is above or below the alarm
setpoint. For the LPS, the calibration pF value is below the setpoint because the unit is
required to alarm at a higher pF value, which indicates a leak. The factory default is Above
Setpoint.
3. Defaults
Factory settings are pre-configured into the unit based on the most typical set-up required
for this application. This provides for a quick and easy calibration at site but can be
changed for special applications. If the setup has been changed, this will change back to the
factory defaults.
4. Net ID
The ID number is used only for network applications. To communicate on a network, each
controller must have a unique ID number. The factory default ID number is 1.
Important: If multiple units on a network have the same address, network errors will result.
5. Filter
Data filtering is used to smooth data from a sudden change and minimize fluctuating
readings. For example, a 5 second setting means the calculated value of the capacitance
and resulting values of pF will start to respond immediately but will take 5 seconds to reach
their final values. The factory default is 0 to provide an immediate and active response.
4.2 2852 Controller Alarms
The two relays on the 2852 operate together. The follow parameters are available as a common
setting to the two relays:
1. Delay
Minimum time in seconds for an alarm to exist before the relays change to an alarm state.
The relay alarm state depends on the Relay Action and Failsafe settings. The factory
setting is 15 seconds. to suppress false alarms due to sudden of intermittent disturbances
in front of the sensor.
2. Action
This determines if the Alarms LEDs should activate when the pF reading rises above or
below the setpoint. The factory default is Above the setpoint because the application of air
to liquid is an increase in capacitance.

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3. Failsafe
Failsafe typically means that the relay is held in an energized state when in a normal
operating condition as opposed to an alarm condition. In an alarm condition, the relay de-
energizes which is identical to when the instrument power is shut off. The rational is that
the alarm condition should match the Power Fail condition. The factory default is Yes for
Failsafe.
4.3 2852 Controller Diagnostics
The 2852 controller has the following Diagnostic parameters:
1. Frequency and Capacitance (pF & Hz)
These are the frequency and capacitance of the leak sensor.
NOTE: The following are temperature sensor options and are available ONLY when ordered by
customer
2. Temperature (TEMP)
The temperature reading from the temperature sensor embedded within the PMC 2800-
TMP card.
3. Temperature Change (CHANGE)
The 2852 controller captures temperature during the calibration and records it as
temperature@Cal. The temperature change is the difference between the
temperature@Cal and the current temperature (parameter 2 above). This temperature
change parameter will be used in temperature compensation.
4. Compensated Capacitance (Tcomp pF)
The compensated capacitance is calculated from the current capacitance (parameter 1) and
temperature change (parameter 3) by a compensation formula which is factory set.
Factory setting is 0.018%.
4.4 2852 Controller Network
The 2852 Controller may be monitored and calibrated via RS-485 protocol compatible digital
communications.
Typical features are:
1. Ease of wiring in multiple level point monitoring:
Up to 255 Model 2852's (or other Arjay 2800 Series level monitors) may be connected together
in a daisy chain (2 wire communication plus power wiring) connection to an Arjay Remote
Access monitor or customer control system which allows viewing data and setup of any of the
transmitters on the network. The relay and analog outputs may still be used if necessary.
2. Setup for the 2852 for network operation:
Each 2852 transmitter must have a unique ID number to connect in a network system.
4.4.1 Modbus Configuration
Parameter settings: 9600 Baud Rate; Even Parity, 8 Data Bits and 1 Stop Bit.
Wiring connection: RS485 (+) connect to D+; RS485 (-) connect to D-

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4.4.2 2800 Series Modbus Register Mapping
REG Zero Based DESCRIPTION TYPE
No. of
Reg
40001 0 Serial Number float 2
40003 2 Hardware Rev / Software Rev byte 1
40004 3 Sensitivity / Mode byte 1
40005 4 Instrument Status int 1
40006 5 Model / Modbus Address byte 1
40007 6 Relay2 Setup / Relay 1 Setup byte 1
40008 7 Password int 1
40009 8 XA "A" cal parameter float 2
40011 10 XK "K" cal parameter float 2
40013 12 XC "C" cal parameter float 2
40015 14 Filter float 2
40017 16 Slope – pF per % level float 2
40019 18 Offset – pF for empty vessel float 2
40021 20 mA output span value float 2
40023 22 mA output Zero value float 2
40025 24 mA output Trim Slope value float 2
40027 26 mA output Trim Offset vlaue float 2
40029 28 Cal1 PV: 1st calibration point level value in % float 2
40031 30 Cal2 PV: 2nd calibration point level value in % float 2
40033 32 Cal1 pF: 1st calibration point capacitance value in pF float 2
40035 34 Cal2 pF: 2nd calibration point capacitance value in pF float 2
40037 36
Relay 1 : Differential High Alarm [% Level]. Only used for
Linear Level type. Not used for Single Point Alarm application float 2
40039 38
Relay 2: Differential High Alarm [% Level]. Only used for
Linear Level type. Not used for Single Point Alarm application float 2
40041 40
Relay 1: Differential Low Alarm [% Level] OR Single Point
Alarm [pF]. Single Point Cal: used as captured pF during cal float 2
40043 42
Relay 2: Differential Low Alarm [%Level]. Only used for Linear
Level type. Not used for Single Point Alarm application float 2
40045 44
Relay 1 On delay [in seconds]. Only used for Linear Level or
Single Point Alarm application int 1
40046 45
Relay 2 On delay [ in seconds]. Only used for Linear Level
type. Not used for Single Point Alarm application int 1
40047 46 mA Analog Output float 2
40049 48 Oscillation Frequency float 2
40051 50 Frequency float 2
40053 52 Capacitance float 2
40055 54 Filtered Capacitance float 2
40057 56 Level float 2
40059 58
Compensated pF for point level [Uncompensated for other
models] 2
40061 60 Temperature mV 2

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40063 62 Temperature dC 2
40065 64 Compensated factor: percent per degree 2
40067 66 Temperature at Calibration 2
40069 68 Temperature offset [mV at 0dC] 2
40071 70 Temperature slope [mV per dC] 2
5.0 MAINTENANCE
There is no routine cleaning required for this controller.

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6.0 TROUBLESHOOTING
CONDITION DO THIS
1. Status LED is OFF and the LCD
display if off
Check the power to the unit. If the unit is a 12VDC or
24VDC model, check the external source and polarity
is correct. If the unit is a 100-240VAC model, then
check the Line, Neutral and Ground wiring is correct.
2. If the status LED is RED This indicates a major error such as memory failure,
no probe signal etc. Check the following:
Make sure the PMC is installed
Make sure the PMC wiring is correct and there
are no breaks in the wiring. At the controller,
measure across the Probe Input terminals with a
DC meter. Make sure “Common” lead of meter is
on ‘-‘ terminal. It should read (+) 8 to (+)10 VDC
with the PMC connected and approximately 20 to
24 VDC with the PMC terminal disconnected.
Microprocessor may have lost its parameters due
to a surge in the line. Go to Diagnostic Menu (see
Flow Chart) to check the Calibration values,
frequency and capacitance values
Call Arjay Technical Support.
3. No mA output OR incorrect mA
output.
IMPORTANT: THE UNIT SOURCES mA OUT
FROM THE mA OUTPUT TERMINAL. THIS
TERMINAL SHOULD NOT BE CONNECTED TO
+24V. IT IS NOT A 2 WIRE mA TRANSMITTER.
See Figure 4 for Electrical hookup details.
Disconnect external wires from mA output and
measure with mA Meter.
Check the mA output Action (direct or inverse)
and mA output Span are set as desired. See
section 7.0 Flow chart / Change menu.
If the mA output still does not match the level,
then call Arjay Technical Support.
4. False Alarms

Add some time delay in the unit
Make sure there is no external interference and
electrical noise such as motors, high voltage
interference, splashing, etc
Adjust the sensitivity to the next higher value.
Test after any changes to confirm an alarm
Make sure the sensor is in a normally dry
condition
5. “No TSnr”

Temperature sensor which is embedded in
PMC2800-TMP is not wired to main controller OR
not working properly. Verify wiring OR replace
with new PMC2800-TMP pulse card.
ARJAY ENGINEERING TECHNICAL SUPPORT
[phone] or [phone]
www.arjayeng.com

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7.0 FLOW CHARTS