Process Control Instruments, Field Devices and Industrial Automation
SKU# (250)

ENDRESS+HAUSER  FTL325N-O1A1

$191.56     Availability: 5 Days
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ENDRESS+HAUSER FTL325N-O1A1 (1)
  • Overview
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EH Nivotester FTL325N Vibronic Point level switching unit with NAMUR input for rail mounting or single installation in hazardous explosion areas. SIL2 safety approval. ATEX, FM and CSA approvals.

Part# with Options:        FTL325N-O1A1
Price with Options:        191.56

Options:    

Approval
(1) Approval for EH FTL325N
Housing
(2) Housing for EH FTL325P/N
Power Supply
(3) Power Supply for FTL325N
Switch Output
(4) Switch Output for EH FTL325N

  Availability 5 Days  ]

Applications
  • Point level detection in liquid tanks and bulk solids silos, also in hazardous areas
  • For sensors in Zone 0 or Zone 20
  • Liquid detection in pipes for dry-run protection of pumps
  • Overfill prevention in tanks with flammable or non-flammable water-polluting liquids
  • Two-point control and point level detection in one switching unit
  • Application in safety systems with functional safety requirements up to SIL 2 in accordance in IEC 61508 when using the Liquiphant M/S with electronic insert FEL56 and FEL58 or Soliphant M with electronic insert FEM58
Your Benefits
  • Intrinsically safe signal circuits [Ex ia] for use of sensors in hazardous areas
  • Compact housing for simple side-by-side installation on standard DIN rails in cabinet
  • Easy connection with plug-in terminal blocks
  • NAMUR interface according to IEC/EN 60947-5-6 for connecting NAMUR sensors or electronic inserts
Signal transmission

The intrinsically safe signal inputs of the Nivotester are galvanically isolated from the mains and the output.

The Nivotester supplies a DC current to the sensors or to sensors specified to IEC/EN 60947-5-6 via a two-wire loop. Examples of the sensors include Liquiphant M/S with electronic insert FEL56 or FEL58 and Soliphant M with electronic insert FEM58. At the same time, a control current is transferred along this power supply line. The control current range: < 1.2 mA and > 2.1 mA depending on the switching status.

Signal evaluation

The Nivotester measures the control current which is transferred along the sensor power supply line and evaluates it. The relay for the level alarm switches when the sensor is covered or not covered. A yellow LED on the front panel of the Nivotester signals the relay switching state. A red LED signals faults, e.g. a short circuit or cable open circuit.

Fail-safe mode

By selecting the correct fail-safe mode, you ensure that the relays always operate with quiescent current safety.

The error current signal of the connected sensor (< 1.2 mA and > 2.1 mA) can be set for each channel with the DIL switches on the Nivotester. This means that the Nivotester can be used for any application at the required level of operational safety. Combined with a sensor, quiescent current safety is defined as follows:

MAX = maximum safety: the relay drops out when the switch point is exceeded (sensor is covered), a fault occurs or the power supply fails.

MIN = minimum safety: the relay drops out when the switch point is undershot (sensor is not covered), a fault occurs or the power supply fails.

Measuring Principle Vibration Liquids
Characteristic / Application Switching unit NAMUR technology for rail mounting
SIL2, according 61511
Intrinsically safe
Supply / Communication NAMUR
24V AC,DC / 230V AC
Ambient temperature Single installation:
-20 C ... 60 C
(-4 F ... 140 F)
Rail mounting:
-20 C ... 50 C
(-4 F ... 122 F)
Communication 1 Channel: 1 level SPDT + 1 alarm SPST
3 Channel: 3 level SPDT + 1 alarm SPST
Certificates / Approvals ATEX, FM, CSA, IEC Ex, INMETRO, NEPSI
Safety approvals Overfill prevention WHG
SIL


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