ABUS TECHNOLOGIES INC.
LPI-T
Loop Powered Indicator
User Manual
WARNING
This manual should be passed on to the end user.
The contents of this manual are subject to change without prior notice.
All rights reserved.
ABUS gives no warranty of any kind with regard to this manual, including, but not limited to, fitness
for a particular purpose.
If any question arises or errors are found, or if any information is missing from this manual, please
LPI-T
inform your supplier or inform at info@abustek.com
.
The specifications mentioned in this manual are limited to those for the standard type under the
specified model number break-down and do not necessarily apply for customized instruments.
Please note that changes in the specifications, construction, or component parts of the instrument
may not immediately be reflected in this manual at the time of change.
If the customer or any third party is harmed by the use of this product, ABUS assumes no
responsibility for any such harm owing to any defects in the product which were not predictable, or
for any indirect damages.
Although Warning hazards are related to personal injury, and Caution hazards are associated
with equipment or property damage, it must be understood that operation of damaged equipment could,
under certain operational conditions, result in degraded process system performance leading to
personal injury or death. Therefore, comply fully with all Warning and Caution notices.
Information in this manual is intended only to assist our customers in the efficient operation of
our equipment. Use of this manual for any other purpose is specifically prohibited and its contents are
not to be reproduced in full or part without prior approval of Technical Communications Department,
ABUS Technologies
HEALTH AND SAFETY
To ensure that our products are safe and without risk to health, the following points must be
noted:
1. The relevant sections of these instructions must be read carefully before proceeding.
2. Warning labels on containers and packages must be observed.
3. Installation, operation, maintenance and servicing must only be carried out by suitably trained
personnel and in accordance with the information given. Any deviation from these instructions will
transfer the complete liability to the user.
4. Normal safety precautions must be taken to avoid the possibility of an accident occurring when
operating in conditions of high pressure and/or temperature.
5. Chemicals must be stored away from heat, protected from temperature extremes and powders kept
dry. Normal safe handling procedures must be used.
6. When disposing of chemicals ensure that no two chemicals are mixed.
Safety advice concerning the use of the equipment described in this manual or any relevant hazard data
sheets (where applicable) may be obtained from the Company address on the back cover, together with
servicing and spares information.
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LPI-T
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CATALOGUE
Contents Page No.
1. Introduction 4
2. Presentation
1. Features
2.
Technical Parameters
3. Dimensions 5
4. Ordering Details 6
5. Connections 6
6. Configuration
Configuration Process
7. Operation
Example for Usage
8. Safety Precautions 10
9. Warranty 10
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5
7
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1. INTRODUCTION
The LPI-T is a microprocessor controlled loop powered display for any 4 ~ 20
mA standard signal. It does not require its own separate voltage source as it is
supplied directly from the measuring current loop.
The measured value is displayed on a 4-digit LCD with a wide max. display
range of -1999 to +9999 digits.
The operating range of the display device can be directly adjusted to the
transmitter without any accessories being required. Simply enter the maximum and
minimum measuring range limits and the decimal point position.
The LPI-T display is fit for all of the transmitters and converters with 4 ~ 20mA
2-wire technique, just as pressure, differential pressure, temperature, flow, PH,
LPI-T
acceleration and so on. 16 Bit ADC MCU inside, allows customers to use the two
buttons, to program the zero point, span, decimal point, damping and alarm point etc.
Over or under range are displayed as a message. The integrated smart diagnostic
system continuously monitors all device function. The programmed parameters are
stored in an EEPROM to be restored in case of a power failure. The LPI-T is powered
by the current loop of the 4 to 20 mA signal transmitter. No additional auxiliary power
is required.
2. PRESENTATION
2.1 Features
1. 2-wire, no additional power supply required, just as traditional LED display.
2. Scale easily adjustable to transmitter range.
3. Option: with backlight, can be visible in the dark environment.
4. 16-bit ADC MCU inside.
5. Large display range of -1.9.9.9. ~ 9.9.9.9. LCD digits.
6. LED can work at 3mA.
7. Two OPTO switch outputs. (Optional)
8. Low circuit voltage drop.
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2.2 Technical Parameters
Analogue signal: 2 wire-system: 4 ~ 20mA
Supply: Supply: Not required, 4 ~ 20mA loop powered.
Voltage Drop: ≤ 4.2V.
Electrical Protection: Short-circuit protection: Permanent
Reverse polarity protection: Maximum current, approx. 200mA
Display: Type: 4-digit, red LED display, digit height 7mm,
digit width 4.85mm.
Range: -1.9.9.9. ~ 9.9.9.9.
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Accuracy: 0.1% ±1 digit
Digital Damping: 0 to 20s (step 0.5s)
Temperature: Operation: -20 ~ 70°C
Storage: -30 ~ 85°C
Materials: Display & Housing: ABS
Miscellaneous: Weight: Approx. 20g
Ingress Protection: IP 65 (when mounted)
Colour of Housing: Orange
3. DIMENSIONS
All Dimensions in mm
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2-wire
4. ORDERING DETAILS
TYPE DESCRIPTION
LPI-T
Product
Transmitter
Output
Alarm
Accessories
LPI-T Loop Power Indicator
D 4~20 mA dc
N
1 1-Alarm
2 2-Alarm
No Alarm
N None
Y Screw and Packing Gasket
Example: LPI-T > D > N > N
5. CONNECTIONS
To connect the LPI-T simply plug into an existing transmitter by means of a
special adaptor for the DIN43650 plug.
Supply voltage: Device takes power directly from measuring current. Please allow for
an additional loop voltage drop of 3 Volts.
Caution: Wrong electrical connection may lead to the destruction of the device.
Mind the maximum input current rating of 40 mA under any circumstances!
Supply + Red
system
Supply - Black
ELECTRICAL CONNECTIONS
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6. CONFIGURATION
Configuration Process
LPI-T
Note: In the following description, “A” denotes the left button, “B” denotes the right button, and “A+B”
denotes pressing the left button and the right button at the same time.
1. Power On
After the digital display was connected to the current circle 4 ~ 20mA, the
name of the manufacturer is displayed, and further enters into the interface of
display.
2. Zero-point (value to be displayed)
Press button “A+B”, unit is displayed.
“A+B” menu item for setting.
“A” to move the cursor; “B” to change the value that the cursor points to. For
example -100.0Kpa.
“A+B” to confirm and store setting and return to the menu item.
3. Span (value to be displayed for 20mA)
Press button “A”, unit is displayed.
“A+B” menu item for setting.
“A” to move the cursor, “B” to change the value that the cursor points to. For
example -100Kpa.
“A+B” to confirm and store setting and return to the menu item.
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4. Decimal Point
Press button “A”, unit is displayed.
“A+B” menu item for setting.
“A” to move the decimal towards left; “B” to move it towards right.
“A+B” to confirm and store setting and return to the menu item.
5. Damping
Press button “A”, unit is displayed.
“A+B” menu item for setting.
“A” to increase it by step of 0.5s and “B” to reduce it by step of 0.5s. (Min=0s,
Max=20s, step 0.5s)
“A+B” to confirm and store setting and return to the menu item.
6. Alarm
Press button “A”, unit is displayed.
“A+B” menu item for setting.
“A” or “B” to change the setting either “on” or “off”. “on” means the parameter
followed is valid, and the Alarm was expressed by the twinkle of the last decimal
point. And “off” cancel the alarm function.
“A+B” to confirm and store setting and return to the menu item.
7. First alarm point
Press button “A”, unit is displayed. It is configured in percentage of span.
8. Second alarm point
Press button “A”, unit is displayed. The method of setting is the same as
step 7.
9. The direction of first alarm point
Press button “A”, unit is displayed.
“A+B” menu item for setting.
“A” or “B” to change the setting either “up” or “down”. “up” means alarm while
the value change from small to big, and “down” means alarm while the value
change from big to small.
“A+B” to confirm and store setting and return to the menu item.
10. The direction of second alarm point
Press button “A”, unit is displayed. Other is the same as step 9.
11. The Delay
Press button “A”, unit is displayed.
“A+B” menu item for setting.
LPI-T
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“A” to increase it by step 0.5s and “B” to reduce it by step 0.5s. (Min=0s,
Max=30s step 0.5)
“A+B” to confirm and store setting and return to the menu item.
“A” returns to the original interface. And all setting is completed.
7. OPERATION
Example for Usage
LPI-T
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8. SAFETY PRECAUTIONS
1. The unit should be powered for 15 minutes before use.
2. Use in ambient temperature of 0-60˚C.
3. Avoid vibrations, shock, excessive dust, corrosive chemical materials or gaseous
environment.
4. Input wire should not be too long. If measured signal have to be far away from the
unit, please use 2-core shielded cable.
5. Use this instrument in the scope of its specifications, otherwise fire or malfunctions
may result.
6. Contact of the instrument, with organic solvents or oils should be avoided.
LPI-T
7. Do not turn on the power supply until all of the wiring is completed. Otherwise
electrical shock, fire or malfunction may result.
8. Do not disassemble, repair or modify the instrument.
9. All connections should be tightened properly.
10. Power supply should be constant, should not be fluctuating.
9. WARRANTY
ABUS provides the original purchaser of this instrument a one (1) year warranty
against defects in material and workmanship under the following terms:
The one year warranty begins on the day of shipment as stated on the sales bill.
During the warranty period all costs of material and labor will be free of charge
provided that the instrument does not show any evidence of misuse.
For maintenance, return the instrument with a copy of the sales bill to our factory.
All transportation and insurance costs should be covered by the owner of the
equipment.
Should any sign of electrical or mechanical shock, abuse, bad handling or misuse
be evident the warranty voids and maintenance costs will be charged.
ABUS TECHNOLOGIES INC.
www.abustek.com, E-M ail: info@abustek.com
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