Pneumercator LDE740 User manual

Multi Tank
Monitoring
System
© COPYRIGHT 2017 PNEUMERCATOR CO.
1785 EXPRESSWAY DRIVE NORTH, HAUPPAUGE, NY 11788
[phone] Phone
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[phone] Product Support
http://www.pneumercator.com
PNEUMERCATOR
Liquid Level Control Systems
INSTRUCTION MANUAL
MODEL LDE 740
(Revised July 8, 2017)
PeterSinkiwskij
DigitallysignedbyPeterSinkiwskij
DN:cn=PeterSinkiwskij,o=PneumercatorCo.,Inc.,
ou=Headquarters,[email protected],c=US
Date:2017.08.0313:07:38-04'00'

PNEUMERCATOR CO., INC. LDE-740 System
Operation and Installation Manual
Page 3 of 104
NOTICE: PNEUMERCATOR CO., INC. reserves the right to make improvements to the
product described in these instructions at any time and with no notice.
WARNING: This equipment generates, uses, and can radiate radio frequency energy and
if not installed and used in accordance with the instruction manual, may cause interference to
radio communications. It has been tested and found to comply with the limits for a Class A
computing device pursuant to Subpart B of Part 15 of FCC Rules, which are designed to provide
reasonable protection against such interference when operated in a commercial environment.
Operation of this equipment in a residential area is likely to cause interference in which case the
user at his own expense will be required to take whatever measures may be required to correct
the interference.
IMPORTANT: Installation of this equipment must be in accordance with these instructions
as adopted from the following codes:
ISA RP12.6, "Installation of Intrinsically Safe Instrument Systems in Class I Hazardous
Locations".
NFPA 70, "National Electrical Code".
Alteration, modification or replacement with non-factory components could impair the
intrinsic safety of this equipment.

PNEUMERCATOR CO., INC. LDE-740 System
Operation and Installation Manual
Page 4 of 104
Table of Contents
Section 1 Introduction 6
Section 2 Specifications 9
Section 3 Installation 11
Section 3.1 Mechanical Installation 11
Section 3.2 Transmitter/Sensor Installation 11
Section 3.2.1 Tank Level Transmitters 11
Section 3.2.2 Switch Sensors 12
Section 3.2.3 Leak Detection Sensors 13
Section 3.3 Electrical Installation 16
Section 3.4 Installation Checklist 17
Section 3.4.1 System Map and Setup 18
Section 4 Operation 19
Section 4.1 Normal Operation 19
Section 4.1.1 Display Mode 19
Section 4.1.2 Tank / Channel Selection 20
Section 4.1.3 System Defaults 20
Section 4.2 Leak Detection 21
Section 4.3 Theft Mode 22
Section 4.4 The Horn 23
Section 4.5 The Relay Contacts 23
Section 4.5.1 Latching Relays 25
Section 4.6 System Tests 25
Section 4.7 Maintenance 26
Section 5 Keypad Commands 27
Section 5.1 How to Enter Keypad Commands 27
Section 5.2 Keypad Commands - Grouped by Function 29
Section 5.3 Keypad Commands - Numerical Order 33
Section 5.4 Keypad Command Entry 35
Section 6 RS-232 Communications 52
Section 6.1 RS-232 Command Format 52
Section 6.2 How to Enter RS-232 Commands 53
Section 6.3 RS-232 Commands - Grouped by Function 54
Section 6.4 RS-232 Commands - Numerical Order 57
Section 6.5 RS-232 Command Entry 59
Section 6.6 Packed Data Format 72
Section 7 Troubleshooting & Servicing 74
Figure 1 Tank Level Transmitter Wiring - TB2 12
Figure 2 Switch Sensor Wiring - TB3 13
Figure 3 Leak Sensor Wiring - TB4 14
Figure 4 9-901 Cable Lengths 14
Figure 5 Relay Contact Wiring - TB5 24

PNEUMERCATOR CO., INC. LDE-740 System
Operation and Installation Manual
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Figure 6 Relay Contact Wiring - TB6 24
Figure 7 Key Definitions 27
Figure 8 RS-232 Special Characters 53
Figure 9 2-412 Installation 79
Figure 10 2-501 Installation 81
Figure 11 9-901 Installation 83
Figure 12 9-902 Installation 84
Figure 13 9-903 Installation 85
Figure 14 Main Circuit Board Layout 86
Figure 15 Display Circuit Board Layout 87
Figure 16 System Wiring Diagram: LDE-740 88
Figure 17 Program Chip Replacement 89
Figure 18 Printer Paper and Ribbon Replacement 90
Figure 19 LS600 LD Installation 91
Figure 20 RSU-800 Installation 92
Appendix A Keypad Error Codes 94
Appendix B Relay and Horn Alarm Conditions 95
Appendix C Tank Product Codes 97
Appendix D RS-232 Connector 99
Appendix E RS-232 Setup 100
Warranty 101

PNEUMERCATOR CO., INC. LDE-740 System
Operation and Installation Manual
Page 6 of 104
Section 1: Introduction
The Pneumercator LDE-740 is an advanced inventory management and
control system. Drawing upon Pneumercator's more than 99 years of experience in
liquid level controls and measurement systems, the LDE-740 is designed to help
simplify the inventory process, and to be extremely easy to operate.
This 16-bit microprocessor controlled system continuously monitors the level
of product in up to 4 storage tanks. The product level is available on the daylight
visible display in units of either inches of product height, or in gallons.
The LDE-740 easily accommodates different sizes of underground and
aboveground storage tanks, and is suitable for all types of fluids. Some of the fluids
that are suitable for monitoring with the LDE-740 are petroleum products, waste oil,
conductive fluids, water, alcohols, solvents, lubricants, and corrosive chemicals. The
gauge offers conversion of level to volume pre-programmed to match the geometry
of the storage tank used. Pneumercator's many years of experience help guarantee
an accurate conversion of height to gallons for all types and configurations of storage
tanks.
The gauge provides audible, visible and (optional) printed outputs for high
(overfill), critical and low level alarms, and 8 switch input alarms. Alarms are also
provided for theft detection, and high water (if the optional water detection is ordered
with the model 2-412 tank level transmitter only). The LDE-740 also provides 8
channels of precision leak detection. Visible alarms are continuously on until the
conditions are corrected. The audible alarm may be silenced for a particular condition
by pressing the HORN RESET pushbutton on the front panel and may be
programmed from the integral keypad to automatically shut off after a specified
period of time. The audible alarm may be disabled for all conditions, by using a
command in programming mode.
The gauge has 8 relays with dry contacts that will activate on programmed
conditions. The relay contacts are available at the terminal block as Form C contacts
that may be programmed for normally energized or normally unenergized states. The
relay contacts are rated at 5 amps at 120 VAC.
Printed hard-copy inventory reports of product level and volume in the tanks
may be requested at any time by pressing the PRINT pushbutton on the front panel
if the optional printer is present. Hard-copy records of alarms and deliveries are
automatically printed on occurrence.

PNEUMERCATOR CO., INC. LDE-740 System
Operation and Installation Manual
Page 7 of 104
The system features self-diagnostics that test the audible alarm, visual
alarms, clock, relay operation, and data storage memory. These tests are available
from the keypad, and help to ensure reliable and trouble-free operation of the
LDE-740.
Set-up parameters for the storage tanks, and for the system as a whole may
be printed at any time by a keypad command. This allows for hard-copy verifications
and records of the conditions that the system is operating under.
Variations in tank installations, fitting tolerances, and tank tilts may be
compensated for by entering an installation offset adjustment. This allows the
system to maintain maximum accuracy in its measurements.
The LDE-740 can take inputs from 8 leak detection sensors designed to monitor
collection sumps and the annular spaces of double wall tanks for leakage of
hydrocarbons. The system provides indications for detection of dry, water, and
hydrocarbons. Detection of air (dry condition) is indicated by a Green light. Detection
of hydrocarbons is indicated by a Red light. Detection of water is indicated by an
Amber light. The leak detection capabilities meet EPA requirements for annual
testing and monthly monitoring.
The LDE-740 will retain memory of a hydrocarbon or water alarm even if the
alarm condition later disappears. The alarm memory is battery backed up, so the
memory will remain in the event of a power failure. The alarm memory may be cleared
by using the Clear Leak Detection Latch keypad command.
The adjustable volume system horn will sound an audible alarm when the
selected alarm conditions are present. Audible alarm silencing may be done manually
by pressing the HORN RESET button on the cover of the console, or may be
automatically timed for a selectable automatic time delay reset. Time delay periods
of 1 to 7 minutes in 1-minute increments are available. Relay outputs may be
programmed to actuate on selected conditions and may be programmed to shut off
after time delays of from 1 to 15 minutes, or be programmed to manually shut off by
pressing the HORN RESET button on the cover of the console.
Sensors may be tested and calibrated by keypad programming. The switch
inputs may be programmed to accept normally open or normally closed mechanical
contacts. The LDE-740 can also be programmed to accept switch inputs at any leak
detection inputs. Sensors for both sump and annular space detection may be mixed
in a system with no limitations. Switch inputs may also be programmed to act as
standby generator inputs, which notify the system when a standby generator is in
operation. Standby generator-run reports are then automatically generated.

PNEUMERCATOR CO., INC. LDE-740 System
Operation and Installation Manual
Page 8 of 104
The system console may be mounted in any non-hazardous area where it can
be provided with 120 VAC ±10% at 60 Hz. The standard enclosure is NEMA 1 with
a NEMA 4 console optionally available (printer not available with NEMA 4 option).
The system level transmitters and sensors are designed for intrinsically safe
operation in Class I, Division 1, Group A, B, C, D areas. The level transmitters may
be separated from the console by 3 wire #18 AWG runs of up to 2200 feet. Leak
sensors may be separated from the console by 3 wire #18 AWG runs of up to 1000
feet. Switch sensors may be separated from the console by 2 wire #18 AWG runs of
up to 2200 feet.
The system is designed to provide safe and reliable operation when installed
as instructed in the Installation section of this manual. All requirements of the
National Electrical Code (NEC) as well as local electrical and fire codes should be
followed in the installation procedures. It is recommended that the user read and
understand ANSI / ISA RP12.6, "Installation of Intrinsically Safe Instrument Systems
in Class I Hazardous Locations”.
If additional information is needed concerning equipment selection, system
planning, installation, operation, servicing or maintenance, please contact:
PNEUMERCATOR CO., INC.
1785 Expressway Drive North
Hauppauge, New York, 11788
Phone [phone]
Fax [phone]
http://www.pneumercator.com

PNEUMERCATOR CO., INC. LDE-740 System
Operation and Installation Manual
Page 9 of 104
Section 2: Specifications
Power - 120 VAC ± 10%, 60 hertz, 50 Watts, MOV differential and common-mode surge
protection, under voltage detection and protection.
Fuse - 3 A.G. SLO-BLO, 1/4 Amp, 250 VAC or equivalent.
Operating Temperature - -40º F to 122º F (-40º C to 50º C).
Enclosure - NEMA 1 standard, NEMA 4 optional.
Installation - Wall mount.
Calibrations - Alarm points and programming set by keypad maintained for 10-year data
retention on power failure.
Gauging Resolution - 0.1% of tank height.
Gauging Accuracy - ±0.12% of tank height or ±1/8" w/2-412 or ±1/4" w/2-501, whichever
is greatest.
Gauging Repeatability - ±0.1% of tank height.
Displays – Red, 0.8 inch high, seven segment displays. Display mode, Tank / Channel
select, Theft mode and Data Recall switches.
Alarm Indications - Tank Level Alarm and Leak Alarm Channel indications always
visible while alarm condition is present. Individual level alarm indications for selected
tank and Individual leak alarm Indications In leak status display mode.
Horn - Min. 85 dB at 3 meters on axis, manual horn reset (silence) pushbutton,
automatically timed horn silence.
Relay Outputs - 8 SPDT dry relay contacts, rated at 5 Amps at 120 VAC, individually
keypad programmable for actuating condition(s) and normally energized or normally
unenergized.
Clock - The clock maintains the time and date and year for (optional) printer functions. It
automatically compensates for Leap Year corrections and Daylight Savings Time. The
time is maintained with an accuracy of ±11 sec / day. 10-year data retention on power
failure.
Level Transmitters - Standard: 2-412 or 2-501. Intrinsically safe for Class I, Division 1,
Groups A, B, C, D, 5 VDC @45 mA.
Optionally from isolated self-powered 4 to 20 mA transducer capable of driving 500 (not
intrinsically safe).

PNEUMERCATOR CO., INC. LDE-740 System
Operation and Installation Manual
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Switch Inputs - 8 from any mechanical switch input.
Intrinsically safe for Class I, Division 1, Groups A, B, C, D, 5 VDC @25 mA. Individually
programmable for normally open or normally closed switch inputs.
Output Signals - standard RS-232 Port.
Optional 20-column dot matrix printer.
Leak Detection Sensors - 8 from 9-901, 9-902, and 9-903 sensors.
Intrinsically safe for Class I, Division 1, Groups A, B, C, D, 5 VDC @45 mA. Can be
individually programmed to alternately accept normally open or normally closed
mechanical switch inputs.
Leak Detection Testing - Meets EPA requirements for annual testing and monthly
monitoring.
Hydrocarbon Detection -
Products that are to be detected must be non-conductive fluids having a dielectric value of
between 2 and 12.
9-901: 0.33”, 100% pfd, 0% pfa @ 0.1 gph.
9-902: 0.35", 100% pfd, 0% pfa @ 0.1 gph.
9-903: 0.68", 100% pfd, 0% pfa @ 0.1 gph.
Leak Detection Response Time - Less than 1 second for detection, 1 minute for alarm latch.
Leak Detection Indicators -
Red led indicates oil detection.
Amber led indicates water detection.
Green led indicates dry (normal condition).
Level Transmitter/Sensor Operating Temperature -
2-412, 2-501 Level Transmitters: -20 ºF to 180 ºF (-29 ºC to 82 ºC).
9-901, 9-902, 9-903 Sensors: -40 ºF to 130 ºF (-40 ºC to 55 ºC).
LS600 Switch Sensors: -20 ºF to 180 ºF (-29 ºC to 82 ºC).
LS600LD Leak Sensors: -40 ºF to 160 ºF (-40 ºC to 71 ºC).
Level Transmitter/Sensor Operating Pressure -
2-412 Level Transmitter: to 50 psi.
2-501 Level Transmitter: to 15 psi.
9-901, 9-902, 9-903 Sensors: ambient (vented).
LS600 Switch Sensors: to 150 psi.
LS600LD Leak Sensors: to 100 psi.
Level Transmitter/Sensor Cable -
2-412, 2-501, 9-901, 9-902, 9-903: Standard 3 conductor #18 AWG,
2-412 and 2-501 up to 2200 feet. 9-900 sensors up to 1000 feet.
Switch sensors: Standard 2 conductor #18 AWG, up to 2200 feet.