Summary of Contents for Flowserve LRGT 16-1
- Page 1 GESTRA Steam Systems LRGT 16-1 English LRGT 16-2 LRGT 17-1 Installation Instructions 818726-03 Conductivity Transmitter LRGT 16-1 Conductivity Transmitter LRGT 16-2 Conductivity Transmitter LRGT 17-1...
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Page 2: Table Of Contents
LRGT 16-1, LRGT 16-2, LRGT 17-1 .......................18 Connecting the conductivity transmitter ..................18, 19 Key ...............................10 Safety power supply unit for LRGT 16-1, LRGT 16-2, LRGT 17-1 ............20 Tools ..............................20 Wiring diagram for conductivity transmitter LRGT 16-1, LRGT 17-1 ............20... - Page 3 Contents – continued – Page Basic Settings Factory setting .............................22 Establishing measuring range and actual value output ..............22, 23 Checking temperature coefficient setting T ..................24 Commissioning Procedure Checking electrical connection ......................25 Applying mains voltage .........................25 Note ..............................25 Operation Correcting the measured value ......................26 Checking the temperature coefficient setting T ..................26 Adapting cell constant ..........................26...
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Page 4: Important Notes
When used for conductivity limiting or continuous boiler blowdown in steam boilers the conductivity transmitters LRGT 16-1, LRGT 16-2 and LRGT 17-1 must only be used in conjunction with the industrial controller KS 90-1. To ensure trouble-free operation the requirements made on water quality according to TRD and EN regulations must be met. -
Page 5: Explanatory Notes
The conductivity transmitters LRGT 16-1, LRGT 17-1 are mainly used in steam boilers with low TDS content, e.g. steam regenerators, high-pressure boilers or condensate tanks. -
Page 6: Function
This potential difference is then picked up by the voltage electrodes and evaluated as measuring voltage U LRGT 16-1, LRGT 17-1 und LRGT 16-2 The electrical conductivity is a function of temperature. A resistance thermometer integrated in the electrode measures the fluid temperatures so as to relate the measured values to the reference temperature. -
Page 7: Technical Data
Measuring electrode(s): 1.4571, X6CrNiMoTi17-12-2 Electrode insulation: PTFE Terminal box: 3.2161 G AlSi8Cu3 LRGT 16-1, LRGT 17-1: measuring tube/screw: 1.4571, X6CrNiMoTi17-12-2 LRGT 16-1, LRGT 16-2: spacer disk: PEEK LRGT 17-1: spacer disk: PEEK HT Measuring length and length of installation (do not cut electrode tips!) 200, 300, 400, 500, 600, 800, 1000 mm (max. -
Page 8: Lrgt 16-1, Lrgt 16-2, Lrgt 17-1
Technical Data – continued – LRGT 16-1, LRGT 16-2, LRGT 17-1 – continued – LRGT 16-1, LRGT 17-1 Measuring range*) (µS/cm at 25 °C) Current output mA = µS/cm 4 mA 20 mA Preferred measuring range to 500 µS/cm corresponds to... -
Page 9: Name Plate / Marking
Technical Data – continued – Name plate / marking Safety note Equipment designation Pressure rating, screwed connection, material number Application specifications Electric rating Measuring range Specification of actual value output CE marking Disposal note Manufacturer Spare part specifications Fig. 1... -
Page 10: Dimensions
Technical Data – continued – Dimensions b = 68 [mm] A.F. 41 1000 1" to EN ISO 228-1 ∅ 40 1" to EN ISO 228-1 RA 3.2 ∅ 28 Fig. 2 LRGT 16-1... - Page 11 Technical Data – continued – Dimensions – continued – b = 68 Cable gland [mm] A.F. 41 1000 1" to EN ISO 228-1 ∅ 40 1" to EN ISO 228-1 RA 3.2 ∅ 28 Fig. 3 LRGT 17-1...
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Page 12: Dimensions
Technical Data – continued – Dimensions – continued – b = 68 [mm] A.F. 41 1000 1" to EN ISO 228-1 ∅ 40 1" to EN ISO 228-1 RA 3.2 ∅ 28 Fig. 4 LRGT 16-2... -
Page 13: Functional Elements
Functional Elements LRGT 16-1, LRGT 16-2, LRGT 17-1 Fig. 5 Toggle switch white Fig. 6 LRGT 16-1 (without cover plate) -
Page 14: Key
Technical Data / Functional Elements LED 1, green LED 2, red Code switch Joint ring 33 x 39, form D, DIN 7603, 1.4301, bright annealed Cover screws (cross recess head screws M4) EMC cable gland M 20 x 1.5 Housing cover Measuring length and length of installation Terminal strip Fixing screws for electronic circuit board... -
Page 15: Installation
Several examples of installation are shown on pages 17/18. LRGT 16-1 (for marine applications) Max. admissible length of measurement and installation: 400 mm. When installed in steam boilers the conductivity transmitter must be secured against ... -
Page 16: Examples Of Installation
LRGT 16-1 LRGT 16-2 LRGT 17-1 Fig. 7 R*: LRGT 16-1, LRGT 17-1 R = 30 mm LRGT 16-2 R = 60 mm Conductivity monitoring and continuous blowdown control, direct installation of conductivity trans- mitter via measuring pot and connection of a continuous blowdown valve ~ 250 1"... -
Page 17: Key
Conductivity monitoring and continuous blowdown control, installation of conductivity transmitter in blowdown line via separate measuring pot Outlet DN 15-40 1" BSP EN ISO 228-1 LRGT 16-1 LRGT 16-2 LRGT 17-1 Inlet DN 15-40 Fig. 9 Ring joint 33 x 39, form D, DIN 7603, 1.4301, bright annealed... -
Page 18: Electrical Connection
Electrical Connection LRGT 16-1, LRGT 16-2, LRGT 17-1 The terminal box is screwed to the electrode by means of a self-locking fixing nut. Before establishing the electrical connection you can turn the terminal box by max. +/– 180 ° to the desired position (cable outlet). -
Page 19: Key
Electrical Connection – continued – Connecting the conductivity transmitter – continued – Fig. 10 Cap nut Sealing ring Lamellar insert Braided screen Gland body Shielded cable... -
Page 20: Safety Power Supply Unit For Lrgt 16-1, Lrgt 16-2, Lrgt 17-1
Electrical Connection – continued – Safety power supply unit for LRGT 16-1, LRGT 16-2, LRGT 17-1 To supply the conductivity transmitter with 24 V DC, a safety power supply unit (PSU), e.g. Siemens SITOP power 05, must be used; this must provide a level of isolation against voltages hazardous to touch that at least meets the requirements for double or reinforced insulation as per DIN EN 50178 or DIN EN 61010-1 or DIN EN 60730-1 or DIN EN 60950 (electrically protective separation). -
Page 21: Wiring Diagram For Conductivity Transmitter Lrgt 16-2
Electrical Connection – continued – Wiring diagram for conductivity transmitter LRGT 16-2 Terminal lug Toggle switch, white Measuring electrode Temperature sensor Pt 1000 Earth Connecting point for 4 - 20 mA functional earth load, max. 750 Ω Fig. 12 24 V DC... -
Page 22: Basic Settings
Basic Settings Factory setting The conductivity transmitter features the following factory set default values: LRGT 16-1, LRGT 17-1 Measuring range: 0.5 µS/cm to 500 µS/cm (at 25°C) preferred measuring range Temperature coefficient: 2.1 (% / °C) LRGT 16-2 Measuring range: 100 µS/cm to 7000 µS/cm (at 25°C) - Page 23 Basic Settings – continued – Establishing measuring range and actual value output – continued – LRGT 16-2 Code switch Current output mA = µS/cm Measuring range 4 mA is 20 mA is (µS/cm at 25 °C) equivalent to equivalent to 3000 3000 5000...
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Page 24: Checking Temperature Coefficient Setting T K
Basic Settings – continued – Checking temperature coefficient setting T For a linear compensation of the measured conductivity value based at 25 °C the temperature coeffi- cient T is set at our works to 2.1 % per °C. Once the service temperature is reached you can check this setting by carrying out a comparison measurement –... -
Page 25: Commissioning Procedure
Commissioning Procedure Checking electrical connection 1. Check that the conductivity transmitter is wired in accordance with the wiring diagram (Fig. 11, 12, page 20, 21). 2. Make sure that the mains voltage is the same as indicated on the name plate. Applying mains voltage Apply mains voltage. -
Page 26: Operation
Operation Correcting the measured value If the indicated conductivity reading differs from the measured comparison value check and re-adjust the temperature coefficient setting T (see section “Settings” on page 24). Only if the temperature coefficient setting is no longer sufficient for the correction should the cell ... -
Page 27: Functional Test
Operation – continued – Functional test 1. To check the functions of the conductivity transmitter set code switch 10 to ON in order to simulate a value that exceeds the measuring range limit and to provide a current output of 20 mA. 2. -
Page 28: Malfunctions
Malfunctions Fault-finding list for troubleshooting Equipment is not working Fault: No supply voltage. Remedy: Apply power and check all electrical connections. Fault: Electronic insert of the conductivity transmitter defective. Remedy: Replace electronic insert. Fault: Mass connection to vessel interrupted – no function. Remedy: Clean seating surfaces and screw in electrode with metal joint ring 33 x 39, form D, DIN 7603, made from 1.4301, bright annealed. -
Page 29: Cleaning The Measuring Electrode
“Installation” on page 16. To clean the measuring electrode take the conductivity transmitter out of service and de-install it. LRGT 16-1, LRGT 17-1 To clean the measuring electrode take the conductivity transmitter out of service and de-install it. Then undo the safety set screw N and unscrew the measuring tube M by hand. -
Page 30: Exchanging The Electronic Insert
4. Unscrew the fixing screws G for the electronic insert and take out the insert. The electronic insert is available as spare part (type LRV 1-40) for LRGT 16-1, LRGT 17-1, type LRV 1-42 for LRGT 16-2. 5. Install the new electronic insert in reverse order. -
Page 31: Decommissioning
Decommissioning Danger Risk of severe burns and scalds all over the body. Depressurise the vessel or measuring pot (0 bar) and make sure that it has cooled down to room temperature (20 °C) before de-installing the conductivity transmitter. Exchanging the conductivity transmitter 1. - Page 32 GESTRA Agencies all over the world: www.gestra.de Great Britain South Africa Flowserve GB Limited Flowserve SA (Pty) Ltd. Abex Road Unit No. 1 Newbury, Berkshire RG14 5EY Director Road Tel. 0044 16 35 / 46 99 90 Spartan Extension 2...