Summary of Contents for Sistec SS200LS
- Page 1 Digital Level Switch Model SS200LS Instruction Manual Version 1.4 www.sistec.com.au Unit 3/63 Walter Drive Osborne Park W.A 6017 (08) 9444 8005...
- Page 2 This page intentionally left blank...
-
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 Level switch introduction - What the level switch measures - How it works - Automatic corrections 2.2 Source housing components... - Page 4 This page intentionally left blank...
- Page 5 Contents Cont. Chapter 8 - Principles of Operation 8.1 Basic principles Specifications Parts List Appendix Parameter List Drawings Wiring and cabling diagrams Calibration record and procedure...
- Page 6 This page intentionally left blank...
-
Page 7: Chapter 1 - Safety Matters
Chapter One Safety Matters... - Page 8 This page intentionally left blank...
-
Page 9: Radiation Safety Precautions
1.1 Radiation safety precautions The SS200LS Digital Level Switch is not a major radiation hazard since the radioactive source is relatively small. However all radioactive materials should always be treated with caution, and the following practices are recommended: Lock the control lever in the BEAM OFF position when transporting or handling the Source Housing ... - Page 10 This page intentionally left blank...
-
Page 11: Chapter 2 - Introduction And Components
Chapter Two Introduction and Components... - Page 12 This page intentionally left blank...
-
Page 13: Level Switch Introduction
2.1 Level Switch Introduction The SS200LS Level Switch has three major components: Source Housing – containing the radiation source Detector – containing the scintillation detector Control Unit – microcontroller with keypad for user interaction They are illustrated in the following diagram: Control Lever 238.5 [9.39]... -
Page 14: What The Level Switch Measures
WHAT THE LEVEL SWITCH MEASURES The SS200LS Level Switch gives accurate trouble free level switching in a vessel or chute. OW IT WORKS The scintillation type detector is highly efficient; it allows the gauge to use a much lower activity radioisotope then other Nucleonic Level Switches. The scintillation detector consists of a Sodium Iodide (NaI) crystal doped with Thallium. -
Page 15: Source Housing Components
2.2 Source housing components The Source Housing is a lead-filled cast steel or stainless steel container that encloses and shields the radioactive source. ADIOACTIVE SOURCE The radioisotope normally used is Caesium It is enclosed in a double 137. encapsulated stainless steel capsule mounted in a source retainer within the Source Housing. -
Page 16: Radiation Detector Components
2.3 Radiation detector components The Detector comprises of: 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 2.4 Control Unit components The Control Unit comprises of:... -
Page 17: Chapter 3 - Installation
Chapter Three Installation... - Page 18 This page intentionally left blank...
-
Page 19: Delivery
3.1 Delivery Check that you have received the following components in the configuration specified at the time of ordering: Control Unit Detector Source Housing Warning: DO NOT open or dismantle the source housing – the radioisotope is already installed 3.2 Selecting installation location ... - Page 20 This page intentionally left blank...
-
Page 21: Chapter 4 - Operation
Chapter Four Operation... - Page 22 This page intentionally left blank...
-
Page 23: Keypad Operation
4.1 Keypad operation The Control Unit keypad is the means of communicating with the Level Switch. It has a liquid crystal display and pressure keys. SING THE KEYS The keys have pressure sensitive contacts which are activated by pressing firmly in the key area. -
Page 24: Viewing And Setting Parameters
4.3 Viewing and setting parameters Parameters used in the calculations are stored in locations in the microprocessor memory. You can view a parameter by entering the location number then press FN, EXAM Note: The gauge must be in “calibrate” mode to examine locations For example, to view location 14 (today’s date) ... -
Page 25: Chapter 5 - Calibration
Chapter Five Calibration... - Page 26 This page intentionally left blank...
-
Page 27: Preparing For Calibration
5.1 Preparing for calibration Turn the Source Housing control lever to BEAM ON. Leave the gauge on for 30 minutes prior to calibration. This is to allow for temperature instability within the Detector and to completely lock on to the Caesium source. - Page 28 Set the Dead Band Factor in location 27 to 0.5. Press 2, 7, FN, EXAM, 0, . , 5, FN, LOAD Select the software switch for High trip (1) or Low trip (0). Press 2, 0, FN, EXAM, 1, FN, LOAD ...
-
Page 29: Chapter 6 - Maintenance
Chapter Six Maintenance... - Page 30 This page intentionally left blank...
-
Page 31: Maintenance Requirements
6.1 Maintenance requirements The SS200LS Level Switch is virtually maintenance free other than keeping the unit clean and calibrating it regularly. 6.2 Source housing and detector The Source Housing and Detector do not require routine maintenance. Warning: DO NOT dismantle the Source Housing for any reason. - Page 32 This page intentionally left blank...
-
Page 33: Chapter 7 - Fault Finding
Chapter Seven Fault Finding... - Page 34 This page intentionally left blank...
-
Page 35: Gauge Not Working
7.1 Gauge not working If the Control Unit is not working make the following checks: 1. Check supply voltage (88 to 264Vac or 18 to 36Vdc) 2. Check the fuse, located in the Control Unit on the motherboard. The fuse is 20 x 5mm 2A 3. - Page 36 This page intentionally left blank...
-
Page 37: Chapter 8 - Principles Of Operation
Chapter Eight Principles of Operation... - Page 38 This page intentionally left blank...
-
Page 39: Basic Principles
8.1 Basic Principles The Level Switch operates on the principle of gamma ray absorption as illustrated below: Gamma rays from the radioactive source are partly absorbed by the material in the Vessel/Chute, the remainder pass through to the scintillation detector. - Page 40 This page intentionally left blank...
-
Page 41: Specifications
IP67. Connects to Control Unit via instrumentation cable Scintillation detector: Sodium iodide with integral photo-multiplier SS200LS Control Unit: Switch mode power supply. 88 to 264Vac 50Hz or 60Hz or 24V DC 40 Watt power consumption 316 Stainless steel enclosure... - Page 42 This page intentionally left blank...
-
Page 43: Parts List
Parts List MODEL SS200LS The following table includes the major parts and sub-assemblies of the SS200LS Level Switch. Control Unit: 8010-90-0005-SS-LS…….Control Unit, 110-240Vac 8010-90-0005-SS-24-LS…Control Unit, 24VDC 5005-00-0002…………. Panel, SS200 5050-00-0002…………. Bracket, support 1230-90-2102-LC………Control Card 4470-90-0003-LS………. Level Switch Keypad 3200-90-0010…………..Power supply assembly, 110 – 240Vac 3200-90-0010-24……….Power supply assembly, 24VDC... - Page 44 This page intentionally left blank...
-
Page 45: Appendix
Appendix Parameter list Location Mnemonic Description Default Version number Update time in seconds Half-Life in years of the source used. For 30.17 Cs137 use 30.17. For Co60 use 5.27. Date of calibration ddmmyy Today’s date. ddmmyy Set to 1 for high trip SFSW Set to 0 for low trip Process material count rate... - Page 46 This page intentionally left blank...
- Page 47 Drawings Title Drawing number SS200LS 240V ac …………………………9535-10-1008 SS200LS 24V DC ………………………….9535-10-1009...
-
Page 48: Control Unit
KEYBOARD CPU CARD TO PMT 24V DC Supply DYNODE CHAIN EB200 CARD +15V - 15V TERMINAL BOARD 15 14 9 10 21 22 Twisted Pair Model SS200LS Wiring 110 - 240V ac SS200LS Level Switch 9535-10-1008 Sheet 1/1 REV 1... - Page 49 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 Model SS200LS Wiring 24V DC SS200LS Level Switch 9535-10-1009 Sheet 1/1 REV 1...
- Page 50 This page intentionally left blank...
- Page 51 SS200LS LEVEL SWITCH GAUGE CALIBRATION RECORD Customer:_________________ Site:_________________ Recorded By:_________________ SS200LS information Location:_________________ Control Unit Serial No:_________________ Source Holder Serial No:_________________ Control Unit Tag No:_________________ Source Holder Tag No:_________________ Detector Unit Serial No:_________________ Source Serial No:_________________ Detector Unit Tag No:_________________...
Need help?
Do you have a question about the SS200LS and is the answer not in the manual?
Questions and answers