Spirax Sarco LD256 Installation And Maintenance Instructions Manual Download

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E X P E R T I S E S O L U T I O N S S U S T A I N A B I L I T Y

3.887.5275.240

EMM Issue 4 - 2018

Level Transmitter

Series LD357BL

Installation and Maintenance Instructions

1. Safety information
2. Introduction
3. Description
4. Operations

5. Configuration

6. Maintenance and

Troubleshooting
7. Marking

8. Data Sheet

Summary of Contents for LD256

Page 1: ...Y 3 887 5275 240 EMM Issue 4 2018 Copyright 2016 Level Transmitter Series LD357BL Installation and Maintenance Instructions 1 Safety information 2 Introduction 3 Description 4 Operations 5 Configurat...

Page 2: ...in the pipeline at some previous time Consider flammable materials substances hazardous to health extremes of temperature 1 5 Hazardous environment around the product Consider explosion risk areas la...

Page 3: ...f necessary 1 12 Electrical work Beforestartingworkstudythewiringdiagramandwiringinstructionsandnoteanyspecialrequirements Consider particulary mains supply voltage and phase local mains isolation fus...

Page 4: ...period is the one contemplated in our general servicing conditions This warranty is neither increased nor restricted by the contents of this manual This Transmitter has to be installed and used only...

Page 5: ...er maximum surface temperature T6 only when used in the ambient temperature range 40 C 40 C T5 only when used in the ambient temperature range 40 C 55 C T4 only when used in the ambient temperature ra...

Page 6: ...tive sensor It is possible to choose a variety of sensors to satisfy all process conditions The Spirax Sarco measuring cell contains the sensor and transmits the pressure to the electronics Thermaldri...

Page 7: ...e sure that the operating conditions are compatible with the specification given to the manufacturer Mandatory For measurement in the presence of particularly hot liquids e g steam make sure that the...

Page 8: ...itcanbesubmittedtohighpressures and temperatures To avoid accidents subsequent to sudden discharge of pressure and or to contact with dangerous or flammable fluids it is necessary to take the maximum...

Page 9: ...9 3 887 5275 240 Fig 3 Level measurement in open vessels Fig 4 Level measurements in closed vessels Tank pressure side side ATM side side...

Page 10: ...e the enclosure B in the desired position once the desired position is reached fix the stop dowels A again with the same key Information Referring to Fig 4 the descending pipes can be filled with cond...

Page 11: ...Electrical connection of the power cable to the terminal block Information Impedance of the cables defines the possible maximum length for digital communication It srecommendedusingcablewithalowimpeda...

Page 12: ...ameter setting and diagnostics The device is a 4 20mA 2 wire transmitter with FSK communication It is possible to read via HART the following variables PV transmitter main measure SV of the span TV an...

Page 13: ...be connected to each barrier Ref to Fig 9 up to three transmitters can be connected to each barrier with a maximum of 5 Ex ia barriers Fig 8 4 20 mA Hart modem connection with Ex ia barrier Fig 9 Only...

Page 14: ...classified areas are fixed from the European Directives 2014 34 EU of 26 February 2014 as far as it concerns the Equipment and 1999 92 EC of December 16th 1999 as far as it concerns the Working Envir...

Page 15: ...um input parameters of the equipment relative to the intrinsically safety Parameter Tamb 60 C Tamb 80 C Output signal 4 20 mA 4 20 mA Input voltage V 30 V 25 2 V Input current li 100 mA 100 mA Input p...

Page 16: ...he signal and the power supply Fig 6 Case 2 Installing the instrument in a plant provided with earthing systems Make sure the earthing GND of the system has the least resistance possible You can add a...

Page 17: ...protection against electromagnetic interference of the instrument Therefore in the case of long distance cable L 20 m both ends of the braid must be connected to the chassis or to the connectors In t...

Page 18: ...ut The direct mode is obtained by setting the lower range point with the lowest value of the range e g 0 mmH20 and by setting the upper range point with the highest value e g 500 mmH20 The reverse mod...

Page 19: ...difications and to go back to the standard display Function Display name Use Choice span Maximum FS flow rate FMAX Function not available for this model Zero setting LRV Measure linked to the zero and...

Page 20: ...ut 20mA output automatic setting span SET URV Atbuttonpushingthetransmitterwill automatically link the 20mA output to the actual reference input Analog output test LOOP TEST It is possible to fix the...

Page 21: ...tric flow meters mode Manualzeroelevationinsertion 6 digits including sign and decimal point Expert command Gain settings GAIN Reduce the upper range limit by reducing the current output 0 1 10 Factor...

Page 22: ...is less than the maximum allowed Measure is incorrect Process Accurately verify the compatibility between the process and the connection type Sensor drift Apply zero input conditions to the transmitt...

Page 23: ...NGE this message is shown if PV is lower than LRV by 20 of the span LCD OV LCD OV this message is shown if PV 99999 or PV 99999 In this case could depends by damage of sensor or display EE CHK ERR Thi...

Page 24: ...manufacturer 2 CE marking followed by the identification number of the notified body involved in the production phase 3 Designation of series or type 4 Serial number with the Year of construction 5 A...

Page 25: ...e from 0 to 60 sec minimum response time 0 1 sec Reverse output automatically obtained via software Transfer function linear square root via software Self test in case of malfunction the analog output...

Page 26: ...lling fluid silicone oil Nameplate stainless steel fixed on housing Calibration Standard at nominal range direct action linear Optional at the conditions specified with the order NPT F on adaptors and...

Page 27: ...27 3 887 5275 240 Main Dimensions Fig 16 Main dimension mm...

Page 28: ...rt please contact our local Sales Engineer or our Head Office directly Spirax Sarco S r l Technical Assistance Via per Cinisello 18 20834 Nova Milanese MB Italy Tel 39 0362 4917 257 39 0362 4917 211 F...

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