IS Technologies SLM800S User manual

Ultrasonic Level Meter SLM800S/1200S
(USER’S MANUAL)
IS Technologies Co., Ltd.

2
SLM800S/1200S
March 2003
COPYRIGHT
© IS Technologies Co., Ltd. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed,
stored in a retrieval system, or translated into any language in any form without the written permission of IS Technologies
Co., Ltd.
WARRANTY AND LIABILITY
IS Technologies Co., Ltd. guarantees for a period of 1 year from the date of delivery that it will either exchange or repair any
part of this product returned to IS Technologies Co., Ltd. if it is found to be defective in material or workmanship, subject to
the defect not being due to unfair wear and tear, misuse, modification or alteration, accident, misapplication or negligence.
DISCLAIMER
IS Technologies neither gives nor implies any process guarantee for this product, and shall have no liability in respect of any
loss, injury or damage whatsoever arising out of the application or use of any product or circuit described herein.
Every effort has been made to ensure accuracy of this documentation, but IS Technologies cannot be held liable for any errors.
TECHNICAL ENQUIRIES
Please contact IS Technologies Co., Ltd. for technical support.
IS Technologies Co., Ltd.
203/504 Buchon Techno Park, 192, Yakdae Dong, Wonmi Gu, Buchon City Kyungki, Korea
Tel: [phone] Fax: [phone]
Web Site: http://www.sondar.com
e-mail: [email protected]

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Contents
Chapter 1 Product Specification….......................................................................................................................................4
Chapter 2 Installation............................................................................................................................................................5
Power Supply Requirements ................................................................................................................................................5
Dimensions ............................................................................................................................................................................6
Terminal Connection .............................................................................................................................................................6
Outdoor and Open Vessel Application……………………………………………………………………………………….8
Closed Vessel Application……………………………………………………………………………………………………..8
Stand Pipe Application…………………………………………………………………………………………………………8
Chapter 3 How To Use Controller ......................................................................................................................................9
Operating the Controller ........................................................................................................................................................9
Chapter 4 Menu Guide.......................................................................................................................................................11
Application Menu Options ...................................................................................................................................................11
Process Menu Options........................................................................................................................................................13
Compensation Menu Options .............................................................................................................................................16
Chapter 5 Digital Communication......................................................................................................................................19
Chapter6 Trouble Shooting…………………………………………………………………………………………………20
Menu Option Record…………………………………………………………………………………………………………….21

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Chapter 1 Product Specification
Product Composition
SLM800S : SLM1000(CONTROLLER) + XDS800(SENSOR)
SLM1200S : SLM1000(CONTROLLER) + XDS1200(SENSOR)
Physical
Dimensions Controller 240 (width). x 185 (height) mm = SLM1000(Controller)
Sensor 67 (dia) x160 (height) mm = XDS800
88 (dia) x 100 (height) mm = XDS1200
Mounting 3/4”NPT(XDS800), 1”NPT(XDS1200)
Weight Nominal 3.0 kg
Sensor material PP(XDS800), PVC(XDS1200), STS(XDS800-Option)
Environmental
IPRating(electronicshousing) IP65
Max. & Min. temperature (electronics) -20 ºC to +60 ºC
Performance
Accuracy 0.35% of the measured range
Resolution 1mm
Max. range Liquids8m/12m
Min. range 0.35meters / 0.50 meters
Beam Angle 12o at -3dB.
Damping Rate Adjustable from 0.1m/min to 100m/min
Temperature Compensation Fully compensated via integral temperature sensor over entire operational span
Explosion Proof EEX d II T6
Outputs
Analogue output 4-20mA into Max 900Ω(user adjustable) Fault condition Alarm 3.8mA
or 21mA user selectable.
Display 2 Line 40 Characters LCD
Programming
On-board programming via 4 tactile push button keys
Supply
Power supply AC 90 ~ 260V, DC 12/24V

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Chapter 2 Installation
Power Supply Requirements
The SLM800S/1200S operate from an AC supply of 90 –260V or DC 12/24V.
All electronic products are susceptible to electrostatic shock, so follow proper grounding
procedures during installation.
The construction of the SLM800S/1200S can be mounted easily using the thread (3/4” NPT, 1”NPT ).
When choosing a location to mount the XDS800/1200(Sensor), bear in mind the following:
•For easy access to the LCD display and programming buttons mount it where it is easily
accessible.
•The ultrasonic signal path should be free of falling material and obstructions such as pipes,
beams etc.
•The XDS800/1200(Sensor) should be mounted at least 35/50cm above the maximum level
of the material and be perpendicular to the surface.
•The mounting surface should be vibration-free.
•The ambient temperature of the sensor is between -20ºC and 70ºC.
•There should be no high voltage cables or electrical inverters close by.
•Do not use any metal substances when installing
(Please use the PVC nut & flange supplied as option)
Dimensions
XDS800/1200
70
100
44
95
1" PF
88
75.5
63.5
160
144
3/4" NPT
67

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SLM1000
SLM-1000
HH
H
ALARM
L
LL
MODE
Sondar
DOWN
UP
RUN
Ultrasonic Level Meter
240
213
185
240
145
15
12560
(185)
198
(107)
60
47
145 15
198
213
Terminal Connection
26 terminals are aligned inside the terminal box.
Input & Output Terminals
SEN+ SEN- IOUT RTH IRTN TX
L_COM
L_NOLL_NO
GND RX
LL_COM
LL_NC
H_COM
H_NCL_NC H_NO HH_NO
HH_COM
HH_NC
ER_COM
ER_NO ER_NC
LN

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Function
Terminal Function Note
SEN+ Connect to positive wire(red) of ultrasonic sensor
SEN- Connect to shield wire(blue) of ultrasonic sensor
RTH This terminal is only used at factory
IOUT 4~20mA current output Maximum :900Ω
IRTN Current output return
TX RS232C interface in use, connect to reception part
RS485 interface in use, connect to Y OPTION
RX RS232C interface in use, connect to transmission part
RS485 interface in use, connect to Z OPTION
GND GROUND, RX, TX
LL_NO Lower limit relay point, OFF with LL_COM together in operation
LL_COM Lower limit relay point, OFF with LL_NO together in operation
LL_NC Lower limit relay point, OFF with LL_COM together out of operation
L_NO Lower Alarm relay point, OFF with L_COM together in operation
L_COM Lower Alarm relay point, OFF with L_NO together in operation
L_NC Lower Alarm relay point, OFF with L_COM together out of operation
H_NO Upper Alarm relay point, OFF with H_COM together in operation
H_COM Upper Alarm relay point, OFF with H_NO together in operation
H_NC Upper Alarm relay point, OFF with H_COM together out of operation
HH_NO Upper limit relay point, OFF with HH_COM together in operation
HH_COM Upper limit relay point, OFF with HH_NO together in operation
HH_NC Upper limit relay point, OFF with HH_COM together out of operation
ER_NO Error relay point, OFF with ER_COM together in operation
ER_COM Error relay point, OFF with ER_NO together in operation
ER_NC Error relay point, OFF with ER_COM together out of operation
L Connect to line of AC power
N Connect to neutral of AC power
Quantity of cables gland provided and the cable thickness
Model Quantity Thickness(ømm)
PG9 1 4~8
PG11 4 5~10
PG13.5 1 6~12

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Outdoor and Open Vessel Installation
The XDS800S/1200S can be simply mounted on a bracket, suitable for the application and secured
using the thread located at the top of the transducer (3/4”NPT, 1” NPT).
Care should be taken to ensure that the XDS800/1200 are not installed in direct sunlight, in order to
avoid errors in the measurement of ambient temperature.
Attention should also be taken, when mounting the unit, to ensure that strong windy conditions are
avoided, wherever possible, to prevent abnormal operation.
Closed Vessel Installation
The XDS800/1200 can be simply screwed into a flange and secured using the thread located at the
top of the transducer (3/4”NPT, 1”NPT).
Where possible use a flange made of a synthetic material such as PVC, to avoid vibration
Place a rubber gasket between the flange and the connection to the vessel to avoid vibration.
Stand Pipe Installation
When mounting the XDS800/1200 to a standpipe care should be taken to ensure that the
standpipe is of sufficient dia with reference to its length, see the table below for details:
When using a standpipe, fixed to the top of a vessel, ensure that the open end of the standpipe is
clear of any obstructions such as weld seams, gaskets etc. in order to avoid unwanted signal
returns.
If using standpipes, which extend into the vessel, beyond the blanking distance, but not as far as
the empty level, then the open end of the standpipe should be cut to an angle of 45o.
Maximum Length(mm)D
[mm] XDS-800 XDS-1200
80 300 305
100 380 380
150 570 570
200 760 760

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Chapter 3 How To Use Controller
Operating the Controller
Display Window
SLM1000 is designed to display various data at the same time by adopting 40 letter LCD.
The display below shows an example of a normal operation of SLM1200S.
Conditions : The distance between the sensor and bottom of the tank : 12m
Current liquid level : 10m
1) L : 10.00 m : shows the current liquid level 10m
2) D : 2.00 m : shows the distance between the sensor and liquid level.
3) M : 86.9% : Percentage of the level
4) TEMP : Temperature around the sensor.
5) D : Indication of normal operation, shows returning echoes are well detected.
6) T : Indication of normal operation, shows tracking of returning echoes is okay.
7) S : No appearance under normal operation, but appears during abnormal operation
such as abrupt level change. Searching for the returning echoes.
Setting Buttons
MODE
DOWN
UP
RUN
1) MODE Button : Used for setting data and moving to another mode.
L : 10. 00 m D : 2 . 00 m D T
M : 86 . 9 % TEMP : +24 . 5 °C

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2) UP Button : Used for increasing the value.
3) DOWN Button : Used for decreasing the value.
4) RUN Button : Used for starting measurement.
Alarm Display
H
HH
L
LL
1)HH LED Lamp : Lighted in case of upper limit operated
2)H LED Lamp : Lighted in case of upper alarm operated
3)L LED Lamp : Lighted in case of lower alarm operated
4)LL LED Lamp : Lighted in case of lower limit operated

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Chapter 4 Menu Guide
Application Menu Option
1) Password
Password is needed to enter the operation mode.
After setting the password using UP/DOWN button, press MODE to get into the operation mode.
- Password : 412
2) Measure Type
Factory Set = Level
This option sets the mode of operation when in run mode, and can be set to one of the following:
Option Description
Level Display shows how full the vessel is with respect to the Empty (0% of
Span)
Distance Display shows the distance from the transducer face to the surface.
Space Display shows how an empty vessel is with respect to Full (100% of
Span) i.e. how much space is available in the vessel.
3) Bottom Distance
FactorySet=8.50/12.50m
This option sets the maximum distance from the face of the transducer to the empty point
BOTTOM DISTANCE SET
BOT : 12.50m
PASSWORD IDENTITY
PASSWORD :
MEASURE TYPE SET
LEVEL

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4) 4mA Setpoint
Factory Set = 0
This option sets the distance( or level or space, depending on the selected Measure Type at which the
4mA output will occur. By default 4mA will represent Empty(0% of Span).
5) 20mA Setpoint
This option sets the distance (or level or space, depending on the selected Measure Type at which the
20mA output will occur. By default 20mA will represent Full (100% of Span)
Important Information
The Span is the maximum working distance from Empty (0%) to Full (100%), and is automatically
calculated as Empty Level (Bottom Distance) minus Blanking Distance. Except for when Measure type
= Distance in this case the Span is the same as the Empty Level
6) Blanking Distance
This option is the distance from the face of the transducer that is not capable of being measured, and is
pre-set to 35cm(SLM800S) or 50cm(SLM1200S). It should not be set to less than this figure, but can be
increased if required.
4mA POINT SET
4mA : 0m
20mA POINT SET
20mA : 12.50m
BLANKING DISTANCE
BL : 0.50m

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Process Menu Options
7) HH ON Point Setting
This option determines the high limit “ON” point for HH relay
- Setting Range : SLM800S : 0.35~8m
SLM1200S : 0.5~12m
8) HH OFF Point Setting
This option determines the high limit “OFF” point for HH relay
- Setting Range : SLM800S : 0.35~8m
SLM1200S : 0.5-12m
9) H ON Point Setting
This option determines the “ON” point for H switched output
- Setting Range : SLM800S : 0.35~8m
SLM1200S : 0.5~12m
10) H OFF Point Setting
This option determines the “ OFF” point for H switched output
- Setting Range : SLM800S : 0.35~8m
- SLM1200S : 0.5~12m
HH ON POINT SET
ON : 11.00m
HH OFF POINT SET
OFF : 10.00m
H ON POINT SET
ON : 10.00m
H OFF POINT SET
OFF : 9.00m

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11) L ON Point Setting
This option determines the “ ON” point for L switched output
- Setting Range : SLM800S : 0.35~8m
- SLM1200S : 0.5~12m
12) L OFF Point Setting
This option determines the “ OFF” point for L switched output
- Setting Range : SLM800S : 0.35~8m
- SLM1200S : 0.5~12m
.
13) LL ON Point Setting
This option determines the low limit “ON” point for LL relay
- Setting Range : SLM800S : 0.35~8m
SLM1200S : 0.5-12m
14) LL OFF Point Setting
This option determines the low limit “OFF” point for LL relay
- Setting Range : SLM800S : 0.35~8m
SLM1200S : 0.5-12m
Important Information
The value of HH relay ON point should be higher than OFF point and this function is used for high limit.
The value of LL relay ON point should be lower than OFF point and this function is used for low limit
H, L relay are used for pump control, draining control, high and low liquid level warning, etc. at user’s need.
L ON POINT SET
ON : 2.00m
L OFF POINT SET
OFF : 3.00m
LL ON POINT SET
ON : 1.00m
LL OFF POINT SET
OFF : 2.00m

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15) Measuring Response
This option determines the maximum rate at which the unit will respond to an increase/decrease in level.
- Setting Range : 1 = 0.1m/min
2=1m/min
3=10m/min
4 = 100m/min
16) Transmitting Power
This option is used to set the power output from the transducer to suit varying applications. By reducing
the power emitted the beam angle will be effectively reduced and can be applied as detailed below;
- Setting Range : 1 = Minimum Power
(For use on short range applications)
2 = Low Power
(For use on applications where obstructions such as pipes, beams, etc. are present)
3 = Normal Power
(For use in normal condition)
4 or 5 = High Power
(For use in arduous applications where conditions are dusty, steamy or turbulent)
17) Error Current
If the SLM800S/1200S fails to receive a valid echo return from the target, then the mA output can be
used to indicate a fault condition (Lost of Echo)
- Setting Range : 3.8mA, 21mA, HOLD
18) Fail Safe Time
In the event of a fail-safe condition occurring (Lost of Echo) the fail safe timer determines the time
before the mAoutput indicates a fault condition (Lost of Echo)
TRANSMITTING POWER
POW : 3
ERROR CURRENT SET
SET : 3.8mA
FAIL SAFE TIME
TIME : 120
MEASURE RESPONSE
RESP : 2

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Compensation Menu Options
19) Detection Threshold Voltage
This option determines detectable size of return echo. This is useful when the first return echo is
needed in condition where small objects creating various kinds of return echoes exist. In case the set
value is high, it can be stronger to the noise, but may not be able to detect small echoes. The 4 is equal
to 0.3V. The table below shows the equivalent voltage to each value
No. 4 5 6 7 8 9 10 11 12 13 14 15
Voltage 0.3 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5
20) Detection Method
This option determines detecting algorithm.
If “ FIRST ECHO” is set, it will detect the first returned echo.
If “ MAXIMUM ECHO” is set, it will detect the maximum echo among the returned echoes.
However, this method is used on the condition that the difference in voltage between the maximum
echo and other echoes should be less than 0.5V. This method is useful where smaller objects are near
the target.
21) Sound Velocity
This option allows for the velocity of sound to be changed according to the atmosphere the transducer
is operating in. By default the velocity is set for sound traveling in air at a temperature of 0oC.
The table below gives details of the velocity of sound in various gaseous atmospheres In all cases the
velocity indicated is that in a 100% gaseous atmosphere at 0oC. In atmospheres less than 100% it may
be necessary to check the level indicated at near empty and near full and compare with the actual level,
several times, then adjust the Sound Velocity accordingly to obtain an accurately displayed reading.
DETECTION THRESHOLD
LEV : 4
DETECTION METHOD
METHOD : FIRST ECHO
SOUND VELOCITY SET
VELO : 331.5m/s

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Gas Sound Velocity
Chlorine 206 m/sec
Carbon Dioxide. 259 m/sec
Argon 308 m/sec
Oxygen 316 m/sec
Air 331.5 m/sec
Ammonia 415 m/sec
Methane 430 m/sec
Helium 435 m/sec
Neon 965 m/sec
22) Velocity Temperature Factor
The sound velocity in air increases or decreases at fixed rate(0.6m/ ℃)
This option allows the rate of change in m/°C to be set according to the present atmosphere and
temperature. This option is useful where ambiguous or mixed gas exists. The newly set value should be
compared with the actual level, several times, to obtain an accurately displayed reading.
- Setting Range : -2.0m/°C ~ 2.0m/°C
23) Material Temperature
The SLM800S/1200S uses an internal temperature sensor, housed inside the transducer nose cone
and therefore the temperature used for compensation is the temperature close to sensor. In
applications where there is a large difference between the temperature near the sensor and that at the
surface of the material being measured, errors in measurement may occur.
This mode allows for the present temperature at the material surface to be entered and reduces any
error in measurement.
- Setting Range : 0~100.0
VELOCITY TEMP FACTOR
FACTOR : 0.6m/°C
MATERIAL TEMPERATURE
TEMP : 25.0°C

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24) Material Temperature Weighting
This option is used in conjunction with Mode 23, Material Temperature. This option determines the
effect the material temperature has on the air temperature in front of the transducer. Where the
temperature of the material has no effect on the air temperature. Mode 24 should be set to 0, in which
case Mode 23, Material Temperature will be ignored. However in cases where the material
temperature heavily influences the temperature at the transducer Mode 24 should be set to 100 and
temperature compensation will be performed accordingly.
- Setting Range : 0~100
25) Measuring Unit
This option determines system unit.
- Setting Range : METER, FEET
26) 12mA Output
SLM800S/1200S outputs 12mA regardless of measurement at this mode.
This option is used with other equipments for testing.
MATERIAL T WEIGHTING
WET : 0%
UNIT(FEET/METER)
METER
12mA OUTPUT

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Chapter 5 Digital Communication
The SLM800S/1200S provides RS232/485 digital communication interface function as
option
The kinds of data and its format are as follows;
Output Data
1. Kinds of Output Data
1) Distance Data
-Distance from the sensor to the surface of measuring material. Unit is mm
2) Temperature Data
-This is temperature data measured by built-in temperature sensor. Unit is 1°C
2. Data Format
Data is edited by ASCII and the sequence as follows
CR LF D T +, - NUL
10000 1000 100 10 1 10 1
DistanceData TemperatureData
A. Baud Rate is 4800bps
B. 1 Data Frame consists of Total 13byte
C. Data Frame outputs per second
D. The number located at 10000 means 10000mm digit number
E. +/- means above/below zero in temperature. The number located at 10 means 10 degree digit
number in °C/°F

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Chapter 6 Troubleshooting
This section describes some problem symptoms, with suggestions as to what to do.
Symptom What to Do
Display blank, transducer not
firing. Check power supply
Display shows “S”, “ ERROR!
LOST ECHO”
“S” means there is an abrupt liquid change or an obstacle in the
beam path is detected. Check the obstacle and get rid of it.
Display shows “ BOTTOM SET
ERROR”.
Measuring range is bigger than setting data of maximum range.
Go to 03, and set the bigger bottom distance