Endress+Hauser nivotester FTL 325 P Technical Information
Endress+Hauser nivotester FTL 325 P Technical Information

Endress+Hauser nivotester FTL 325 P Technical Information

Level limit switch with intrinsically safe signal circuit for connection to the liquiphant and soliphant measuring sensor
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Technical Information
TI 350F/00/en
Level Limit Switch
nivotester FTL 325 P
With intrinsically safe signal circuit for connection to
the Liquiphant and Soliphant measuring sensor
Applications
Level limit detection in liquid tanks and
bulk material silos, also in hazardous
explosion areas
For Zone 0 or Zone 20 measuring
sensors
Liquid detection in pipes for dry
running protection for pumps
Overspill protection for tanks with
combustible or non-combustible
liquids harmful to water
Two-point control and level limit
detection with one switching instrument
Application in safety related systems
with requirements for functional safety
up to SIL3 in accordance to IEC 61508
when using Liquiphant M/S with
electronic insert FEL 57
Benefits at a glance
Intrinsically safe signal circuits [EEx ia]
for problem-free use of measuring
sensor in explosion hazardous areas
Highest functional SIL safety (see also
Safety Manual SD 111) through:
– fault-free PFM technology
– line monitoring through to sensor
– corrosion monitoring on tuning fork of
Liquiphant M measuring sensor
Compact housing for simple series
installation on standard rails in switch
cabinet
Simple wiring using pluggable terminal
blocks
Simple iterative test acc. to WHG by
connecting a Liquiphant M and S (high
temperature): one-touch operation
High test depth: from isolating amplifier
through to measuring sensor

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Summary of Contents for Endress+Hauser nivotester FTL 325 P

  • Page 1 Level Limit Switch Technical Information TI 350F/00/en nivotester FTL 325 P With intrinsically safe signal circuit for connection to the Liquiphant and Soliphant measuring sensor Applications Benefits at a glance • • Level limit detection in liquid tanks and Intrinsically safe signal circuits [EEx ia]...
  • Page 2 Measuring principle Signal transmission The intrinsically safe signal input of the Nivotester FTL 325 P limit switch is galvanically isolated from the mains and the output. The Nivotester powers the Liquiphant or Soliphant measuring sensors with a two-wire DC loop and receives a frequency which signals whether or not the limit has been reached.
  • Page 3 Function monitoring To increase operating safety, the Nivotester is equipped with a function monitoring system. A fault is indicated by a red LED and causes the level alarm relay in the affected channel as well as the fault alarm to drop out. A fault is signalled when the Nivotester receives no more current pulses.
  • Page 4 1-channel Nivotester FTL 325 P-#1#1 The measuring device of the 1-channel instrument consists of: – 1 measuring sensor – 1-channel Nivotester – control or signal devices FTL 325 P-#1#1 L00-FTL325Px-14-06-xx-xx-001 3-channel Nivotester FTL 325 P-#3#3 There are five possible variants of the measuring device in the three-channel instrument.
  • Page 5 When channels CH2 and Ch3 are used for two-point control ∆s and channel CH1 for overspill protection, the measuring device consists of: – 3 measuring sensors – 3-channel Nivotester – control or signal devices FTL 325 P-#3#3 ∆s L00-FTL325Px-14-06-xx-xx-004 When channel CH2 is used for measuring the level limit with two level limit relays and channel CH1 is used for measuring other level limits, the measuring device consists of: –...
  • Page 6: Input Parameters

    – Soliphant DM 90 Z, DM 91 Z, DM 92 Z, with electronic insert EM 17 Z – Soliphant II FTM 30 S, FTM 31 S, FTM 32 S, with electronic insert FEM 37 • Measuring sensor power supply: from Nivotester FTL 325 P • Connecting line: two-wire, screening unnecessary •...
  • Page 7: Power Supply

    Connecting the measuring sensor (at upper, blue terminal blocks) The two-wire connecting line between the Nivotester FTL 325 P and the Liquiphant or Soliphant measuring sensor can be either a commercially available installation cable or wires in a multi-wire cable for measuring purposes. Line resistance may be a maximum of 25 Ω per wire.
  • Page 8 Accuracy Settling time/length Final switching status after switching on the power supply: approx. 10...40 s, depending on the connected measuring sensor. With Liquiphant M and Liquiphant S (high temperature) note the self-test function of the FEL 57 electronic insert. Operating conditions (Installation conditions) Installation instructions Operating location The Nivotester must be housed in a switch cabinet outside the explosion hazardous area.
  • Page 9 Operating conditions (Ambient conditions) Operating location Switch cabinet or protective housing Permissible ambient For single installation temperatures • –20 °C...+60 °C (–4 °F...+140 °F) For rail mounting without gaps • –20 °C...+50 °C (–4 °F...+122 °F) Storage temperature • –20 °C...+85 °C (preferably at +20 °C) (–4 °F...+140 °F (preferably at +68 °F)) Installation in protective housing •...
  • Page 10: Mechanical Construction

    Mechanical construction • Construction, dimensions Housing: plastic rail-mounting housing (Minipac construction) • Installation: on top-hat rail to EN 50022 - 35 x 7.5 or EN 50022 - 35 x 15 • Ingress protection to EN 60529; IP20 Note! 100 mm = 3.94 in min.
  • Page 11 Materials Housing • Polycarbonat • Colour: light grey, RAL 7035 Front cover • Polyamid PA6 • Colour: blue Fixing slide (for fixing to top-hat rail) • Polyamid PA6 • Colour: black, RAL 9005 Connection terminals 1-channel • 2 screw terminals: sensor power supply •...
  • Page 12: Display And User Interface

    Display and user interface Operating concept On-site setting with switches behind the hinged front panel • Display elements Green LED: standby • One red LED per channel: fault signalling • One yellow LED per channel: picked-up relay (level alarm) Operating elements 1-channel instrument •...
  • Page 13: Certificates And Approvals

    Certificates and approvals CE mark The device meets the statutory requirements of EC directives. Endress+Hauser confirms the successful testing of the device by affixing the CE mark. Ex approval The Endress+Hauser sales office will provide you with information on the currently suppliable Ex versions (ATEX EEx ia;...
  • Page 14: Supplementary Documentation

    Accessories Protective housing The protective housing of ingress protection class IP66 is equipped with an integrated top-hat rail and is closed by a transparent cover which can also be lead-sealed. Dimensions: W 180 / H 182 / D 165 Colour: Light grey RAL 7035 Parts number (PN) 52010132 Supplementary documentation...
  • Page 15 Certificates ATEX: • Nivotester FTL 325 P XA 133F/00/a3 DIBt: • Liquiphant M, Liquiphant S FTL 50/51, FTL 50H/51 H, FTL 51 C, FTL 70/71 ZE 233F/00/de SIL: • Nivotester SD 111F/00/en...
  • Page 16 Endress Hauser GmbH+Co. Instruments International P.O. Box 2222 D-79574 Weil am Rhein Germany Tel. (07621) 975-02 Tx 773926 Fax (07621) 975 345 e-mail: info@ii.endress.com Internet: http://www.endress.com 11.01 TI 350F/00/en/02.03 SL/FM + SGML6.0 ProMoDo...

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