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Summary of Contents for Sistec SS200
- Page 1 Digital Density Gauge Model SS200 Instruction Manual Version 4.5 www.sistec.com.au Unit 3/63 Walter Drive Osborne Park W.A 6017 (08) 9444 8005...
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Page 3: Table Of Contents
Contents Chapter 1 - Safety Matters 1.1 Radiation safety precautions If the source housing is damaged Radiation Specifications Safe radiation levels Chapter 2 – Introduction and Components 2.1 Density gauge introduction - What the density gauge measures - How it works - Controls and compensations - Automatic corrections 2.2 Source housing components... - Page 4 This page intentionally left blank...
- Page 5 Contents Cont. Chapter 5 – Initial Set up 5.1 Set up 5.2 Calibration constants 5.3 Standard values 5.4 Setting outputs 5.5 Output smoothing - Exponential averaging - Rolling average buffer 5.6 Setting limits - SG limits - Percent solids limits - Solid mass flow Chapter 6 –...
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- Page 7 Contents Cont. Appendix Parameters List Profibus - Profibus termination HART - HART termination DeviceNet - DeviceNet termination Drawings Wiring and cabling diagrams Calibration Record...
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Page 9: Chapter 1 - Safety Matters
Chapter One Safety Matters... - Page 10 This page intentionally left blank...
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Page 11: Radiation Safety Precautions
The safe level of radiation recommended by health authorities for the general public is 2.5μSv/hr for a 40-hour working week for 50 weeks in a year. The SS200 gauge gives 1.4 usv/hr at one metre for a 100mCi Cs137 source. - Page 12 This page intentionally left blank...
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Page 13: Chapter 2 - Introduction And Components
Chapter Two Introduction and Components... - Page 14 This page intentionally left blank...
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Page 15: Density Gauge Introduction
They are illustrated in the following diagram: WHAT THE DENSITY GAUGE MEASURES The SS200 Digital Density Gauge gives accurate trouble free measurements of Specific Gravity (SG) or Percent Solids (PSL) and Solids Mass Flow (SMF) in slurries, oils, food products or other process fluids. -
Page 16: How It Works
OW IT WORKS The radiation source emits gamma rays into the pipe containing the slurry. Some of the gamma rays are absorbed and some pass through to the Detector. The degree of absorption of radiation is a measure of the Density. The detected radiation information is transmitted to the Control Unit where it is converted to the required units. -
Page 17: Control Lever And Source Shutter
ONTROL LEVER AND SOURCE SHUTTER A control lever mounted on the top of the Source Housing controls the source shutter. The source shutter is a solid tungsten block and is used to shield the radiation emitted from the Source Housing. The lever has three positions, which are clearly marked. -
Page 18: Radiation Detector Components
2.4 Radiation detector components The Detector comprises of: 316 Stainless Steel IP67 Enclosure A scintillation detector, which detects gamma rays A photo-multiplier tube (PMT), which converts the gamma rays into electrical pulses An electronics board, which gain stabilises the scintillator and transmits count rate information to the Control Unit OW THE ETECTOR WORKS... -
Page 19: Chapter 3 - Installation
Chapter Three Installation... - Page 20 This page intentionally left blank...
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Page 21: Delivery
3.1 Delivery Check that you have received the following components in configuration specified at the time of ordering: Control Unit ▪ Detector ▪ Source Housing ▪ Pipe Clamps ▪ DO NOT open or dismantle the source housing – the radioisotope is already Warning: installed 3.2 Selecting installation location... -
Page 22: Electrical Installation
3.4 Electrical installation Refer to the “Wiring and cabling diagrams” at the rear of this manual Use only minimum size specified screened cable Ensure cable screen is in contact with gland Depending on power supply specifications, the Control Unit can be powered by 88 to 264 Vac or 18 to 36 VDC ... -
Page 23: Chapter 4 - Operation
Chapter Four Operation... - Page 24 This page intentionally left blank...
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Page 25: Keypad Operation
4.1 Keypad operation The Control Unit keypad is the means of communicating with the Density Gauge. It has a liquid crystal display and pressure keys, as shown below: SING THE KEYS The keys have pressure sensitive contacts, which are activated by pressing firmly in the key area. -
Page 26: Run And Cal Mode
4.2 RUN and CAL mode The Control Unit operates in one of two modes: CALIBRATE or RUN. It can freely be switched between the two. A red LED indicates the current mode. Press RUN to enter RUN mode Press CAL to enter CALIBRATE mode MODE This is the normal mode of operation, the gauge powers up in RUN mode. -
Page 27: Accessible And Fixed Parameters
CCESSIBLE AND IXED ARAMETERS Parameters 1-29, 56, 57 are accessible through the keypad. The remaining parameters are fixed and can only be viewed. FFECTS OF CHANGING PARAMETERS Changing a parameter affects the gauge on all future results calculated. The latest sets of results are recalculated and the outputs are adjusted immediately. 4.4 Viewing results The default display on the Control Unit is the calculated SG results. - Page 28 This page intentionally left blank...
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Page 29: Chapter 5 - Initial Set Up
Chapter Five Initial Set up... - Page 30 This page intentionally left blank...
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Page 31: Set Up
5.1 Set up When the SS200 Digital Density Gauge is set up for the first time, three types of settings must be entered. Calibration Constants Standard Values High and low limits for the 4-20mA inputs and outputs These parameters are entered into their locations in the Control Unit. -
Page 32: Rolling Average Buffer
influenced by the function of the current loop outputs. The default time constant value is 60. Exponential averaging is selected by setting the Time Constant parameter (Location 29), to a non-zero value The output current is smoothed according to the formula: New = OLD x EAF + VAL x (1-EAF) where: NEW = New value to be output on the current loop. -
Page 33: Setting Limits
5.6 Setting limits Set up limits for SG, PSL, Flow Input and SMF. L and H respectively: SG L IMITS Low limit (L) SG for 4mA output: Press CAL, 1, 6, FN, EXAM, (L), FN, LOAD High limit (H) SG for 20mA output: ... - Page 34 This page intentionally left blank...
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Page 35: Chapter 6 - Calibration
Chapter Six Calibration... - Page 36 This page intentionally left blank...
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Page 37: Calibration Questions
6.1 Calibration Questions HY IS CALIBRATION NECESSARY Calibrating the SS200 Digital Density Gauge is essential to correct for pipe wear and long term drift in detector efficiency. HEN SHOULD IT BE CALIBRATED The Digital Density Gauge must be calibrated when first installed to set up initial calibration standards. -
Page 38: Calibration Principles
6.3 Calibration Principles Calibration is achieved by a two-point process. 1. Water Calibration 2. Slurry Calibration (Slurry Constant Calculation) A two point calibration is the preferred method of calibration as it sets a linear relationship between the SG of water and the SG of the slurry via a ratio of count rate using a density equation. - Page 39 9, 9, FN, EXAM Press CAL to cycle through parameters The calibration is now complete, enter RUN mode FN, RUN Note: If this calibration technique is not viable (I.e. no water or slurry flow) please contact SIStec for further information.
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Page 40: Automated Calibration Procedures (Version 2.0 And Above)
6.5 Automated Calibration Procedures Automated Calibrations are only available to software versions 2.0 and above. Press CAL, FN, RST to check software version. WATER CALIBRATION To perform an automated water calibration. In Calibration Mode, with the source holder lever in the "ON" position and pure water in the pipe. - Page 41 SLURRY CALIBRATION The calibration method using water is preferred, however calibration using slurry is possible if a water calibration cannot be done In Calibration Mode, with the source holder lever in "ON" position and slurry with a known density in the pipe ...
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Page 43: Chapter 7 - Maintenance
Chapter Seven Maintenance... - Page 44 This page intentionally left blank...
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Page 45: Maintenance Requirements
7.1 Maintenance requirements The SS200 Digital Density Gauge is virtually maintenance free other than keeping the unit clean. 7.2 Source housing and detector Initial and three yearly compliance tests by qualified person Compliance tests if gauge moved. Annual wipe tests, shutter test and survey meter test by qualified person The Source Housing and Detector do not require routine maintenance. - Page 46 This page intentionally left blank...
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Page 47: Chapter 8 - Fault Finding
Chapter Eight Fault Finding... - Page 48 This page intentionally left blank...
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Page 49: Gauge Not Working
8.1 Gauge not working If a fault has occurred, check the following: 1. Check supply voltage (88 to 264 Vac or 18 to 36 VDC) 2. Check fuse, located in the Control Unit Enclosure on motherboard. The fuse is 20 x 5mm 2A Quick Blow 3. -
Page 50: Low Count Rate
(CR < 400) OW COUNT RATE ❑ Source holder not installed ❑ Source Holder alignment incorrect, realign pipe clamp mounting NSTABLE OUNT Analyse count rate to check stability: The count rate values are statistically linked to the update time to give a standard deviation of count rate. -
Page 51: Checking Flow Meter Calibration
DISPLAYS MAXIMUM OR MINIMUM RANGE If the Control Unit is reading the maximum range value for SG this could indicate a problem with the calibration or the Detectors circuitry. ❑ Check Count Rate Stability ❑ Gauge not calibrated correctly, re- calibrate gauge HECKING FLOW METER CALIBRATION To check the range on the flow meter is the same as the range on the density gauge. - Page 52 This page intentionally left blank...
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Page 53: Chapter 9 - Principles Of Operation
Chapter Nine Principles of Operation... - Page 54 This page intentionally left blank...
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Page 55: Basic Principles
9.1 Basic Principles The Density Gauge operates on the principle of gamma ray absorption as illustrated below: Gamma rays from the radioactive source are partly scattered by the slurry, the remainder pass through to the scintillation detector. The degree of scattering is a measure of the Density (high-density slurries scatter more gamma rays than lower density slurries) The Density is reported as Specific Gravity (SG), which has no units, since it is the ratio of the Density of the slurry to the Density of the water. - Page 56 This page intentionally left blank...
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Page 57: Specifications
Rugged stainless steel enclosure, protection to IP67. Connects to Control Unit via instrumentation cable Scintillation detector: Sodium iodide with integral photo-multiplier SS200 Control Unit: Switch mode power supply. 88 to 264 Vac 50Hz or 60Hz or 24 VDC 40 Watt power consumption... - Page 58 This page intentionally left blank...
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Page 59: Parts List
Parts List SS200 ODEL The following table includes the major parts and sub-assemblies of the SS200 Digital Density Gauge. Control Unit: 8010-90-0005-SS-24….. ……….…….. Control Unit 24Vdc 8010-90-0005-SS-24V-H……….…….. Control Unit 24Vdc HART 8010-90-0005-SS-24V-PDP………….. Control Unit 24Vdc Profibus DP 8010-90-0005-SS-24V-DN…………… Control Unit 24Vdc DeviceNet 8010-90-0005-SS-110/240V…………. - Page 60 This page intentionally left blank...
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Page 61: Appendix Parameter List
Appendix Parameter list Location Mnemonic Description Default Version number Set 1 to calculate results after a fixed MODE time. Set 0 to calculate after fixed number of counts. Time in seconds between calculations of (Applies only If location 1 is set to 1) is the minimum number of counts to be used in calculating SG. - Page 62 Location Mnemonic Description Default SG corresponding to 20mA output. PSL corresponding to 4mA. PSL corresponding to 20mA. 66.67 Set to 1 to input flow, calculate Solids SFSW Mass Flow and output this on loop 2. Volume flow rate corresponding to 4mA. Volume flow rate corresponding to 20mA.
- Page 63 Location Mnemonic Description Default Minimum number of counts before MINN 131072 calculation of results (i.e. 2 ���� ( 0.5 ) -6.29E Daily decay constant: ( 365.25×���� ) ���� 1.33 ( ����−�� ) ��1×��3 10335 Corrected water count rate ��2 Decay correction (DDC x (day(JD)- -270 day(JDI))) Volume flow from current loop input.
- Page 64 Location Mnemonic Description Default Solid Mass Flow (instantaneous) SSMF Solid Mass Flow (smoothed) Output current for Solid Mass Flow, in mA 7.55 User-set calibration parameters The following parameters are entered by the user and used for calibration. Entering a value into SC will recalculate calibration values and therefore should not be changed except during a calibration Calibration count rate (set by user) 81.20...
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Page 65: Profibus Dp Option
PROFIBUS DP Option The PROFIBUS DP option provides the capability of reading from and writing up to ten four byte registers of the Control Unit. Each four-byte register provides the precision of 32 bit IEEE 754 format floating point numbers. The standard Control Unit read registers are SG, Percent Solids, Solid Mass Flow, Count Rate and Empty Pipe Status. - Page 66 PROFIBUS addresses SG is sent to PROFIBUS addresses 1 to 4. PSL is sent to PROFIBUS addresses 5 to 8. SMF is sent to PROFIBUS addresses 9 to 12. CR is sent to PROFIBUS addresses 13 to 16. Empty Pipe Status is sent to PROFIBUS addresses 17 to 20. Under normal running conditions, the Empty Pipe Status value is 0.
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Page 67: Hart Option
HART Option Four Process Variables are available via the HART option, SG, Percent Solids, Solid Mass Flow and Count Rate. The Device Variable Codes are as follows: Device Variable Classification Code Code Units Density Kilograms per litre Percent Solids Percent Solid Mass Flow Tonnes per hour Count Rate... - Page 68 This page intentionally left blank...
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Page 69: Devicenet Option
DeviceNet Option The DeviceNet option provides the capability of reading from and writing up to ten four byte registers of the Control Unit. Each four-byte register provides the precision of 32 bit IEEE 754 format floating point numbers. The standard Control Unit read registers are SG, Percent Solids, Solid Mass Flow, Count Rate and Empty Pipe Status. - Page 70 This page intentionally left blank...
- Page 71 Title Drawing number SS200 240V ac …………………………9535-00-1000 SS200 24V DC ………………………….9535-00-1001 SS200 with HART 240V ac …………….9535-00-1002 SS200 with HART 24V DC ……………9535-00-1003 SS200 with PROFIBUS 240V ac ………9535-00-1004 SS200 with PROFIBUS 24V DC ………9535-00-1005 SS200 with DeviceNet 240V ac ………9535-00-1006...
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Page 72: Control Unit
CONTROL UNIT DETECTOR UNIT -15V ANODE +15V TOP DYNODE CATHODE POWER SUPPLY KEYBOARD CPU CARD TO PMT 110-240 Vac DYNODE CHAIN EB200 CARD +15V - 15V TERMINAL BOARD 15 14 9 10 21 22 Twisted Pair... - Page 73 CONTROL UNIT DETECTOR UNIT -15V ANODE +15V TOP DYNODE CATHODE POWER SUPPLY KEYBOARD CPU CARD TO PMT 24V DC Supply DYNODE CHAIN EB200 CARD +15V - 15V TERMINAL BOARD 15 14 9 10 21 22 Twisted Pair...
- Page 74 CONTROL UNIT DETECTOR UNIT -15V ANODE +15V TOP DYNODE CATHODE POWER SUPPLY KEYBOARD CPU CARD TO PMT 110-240 Vac DYNODE CHAIN EB200 CARD +15V - 15V TERMINAL BOARD 15 14 9 10 21 22 16 17 SH Twisted Pair Note: HART modem connected to Loop 1 via jumpers on HART module...
- Page 75 CONTROL UNIT DETECTOR UNIT -15V ANODE +15V TOP DYNODE CATHODE POWER SUPPLY KEYBOARD CPU CARD TO PMT 24V DC Supply DYNODE CHAIN EB200 CARD +15V - 15V 1 2 3 4 5 6 7 1 2 3 TERMINAL BOARD 15 14 9 10 21 22 Twisted Pair...
- Page 76 CONTROL UNIT DETECTOR UNIT -15V ANODE +15V TOP DYNODE CATHODE POWER SUPPLY KEYBOARD CPU CARD TO PMT 110-240 Vac DYNODE CHAIN EB200 CARD +15V - 15V TERMINAL BOARD 15 14 9 10 21 22 16 17 19 20 Twisted Pair PROFIBUS...
- Page 77 CONTROL UNIT DETECTOR UNIT -15V ANODE +15V TOP DYNODE CATHODE POWER SUPPLY KEYBOARD CPU CARD TO PMT 24V DC Supply DYNODE CHAIN EB200 CARD +15V - 15V 1 2 3 4 5 6 7 1 2 3 TERMINAL BOARD 15 14 9 10 21 22 19 20...
- Page 78 CONTROL UNIT DETECTOR UNIT -15V ANODE +15V TOP DYNODE CATHODE POWER SUPPLY KEYBOARD CPU CARD TO PMT 110-240 Vac DYNODE CHAIN EB200 CARD +15V - 15V TERMINAL BOARD 15 14 9 10 21 22 19 20 Twisted Pair DeviceNet...
- Page 79 CONTROL UNIT DETECTOR UNIT -15V ANODE +15V TOP DYNODE CATHODE POWER SUPPLY KEYBOARD CPU CARD TO PMT 24V DC Supply DYNODE CHAIN EB200 CARD +15V - 15V TERMINAL BOARD 15 14 9 10 21 22 19 20 Twisted Pair DeviceNet...
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- Page 81 SS200 Digital Density Gauge Calibration Record Calibrating the SS200 Digital Density Gauge is essential to correct for pipe wear and long term drift in detector efficiency. The Digital Density Gauge must be calibrated when first installed to set up initial calibration standards.
- Page 82 1 = Enable Profibus communication 255 = for Any Bus Module MBID 170 = for HART Module Density Gauge SG (SGe) Average Slurry Sample SG Average SIS Technologies Pty Ltd Suppliers and Manufacturers of Process Control Instrumentation email. sales@sistec.com.au tel. (08) 9444 8005...
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