Detect up to five level limits with one probe
Flexible instrumentation (compact/separate)
No moving parts
Specs at a glance
Function Level switch for multiple point detection Product liquids as of 10 µS/cm Measuring points up to 4 measuring points with 5 rods or ropes Product temperature –40 to +100 °C (–40 to + 212 °F) Process pressure –1 to +10 bar (–14.5 to +145 psi)
Liquipoint T FTW31
Product / Version Price / pcs. in CAD Order code Electronics; Output Sensing Point Probe Length 1 to 3 4 to 10 11+ FEW52; PNP 10.8-45VDC / FEW54; relay 20-253VAC; 20-55VDC / FEW58; NAMUR 2x rod, 316L 72inch L, 316L 279 259 245 FTW31-A2A2EBxA 36inch L, 316L 301 280 265 FTW31-A2A2LBxA 500mm L, 316L 279 259 245 FTW31-A2A2HBxA 1500mm L, 316L 296 275 260 FTW31-A2A2IBxA 3x rod, 316L 72inch L, 316L 316 294 278 FTW31-A2A3EBxA 36inch L, 316L 339 315 298 FTW31-A2A3LBxA 500mm L, 316L 316 294 278 FTW31-A2A3HBxA 1500mm L, 316L 333 310 293 FTW31-A2A3IBxA Separate instrumentation 5x rod, 316L 72inch L, 316L 220 205 194 FTW31-A2A5EB0A 500mm L, 316L 220 205 194 FTW31-A2A5HB0A 1500mm L, 316L 237 221 209 FTW31-A2A5IB0APlease notice that FTW31 does not come with CSA approval!
Liquipoint T FTW32
Product / Version Price / pcs. in CAD Order code Electronics; Output Sensing Point Probe Length 1 to 3 4 to 10 11+ FEW52; PNP 10.8-45VDC / FEW54; relay 20-253VAC; 20-55VDC / FEW58; NAMUR 2x rope, 316Ti 180inch L 305 284 269 FTW32-A2D2EBxA 360inch L 406 378 358 FTW32-A2D2FBxA 5000mm L 356 331 313 FTW32-A2D2CBxA 10000mm L 406 378 358 FTW32-A2D2DBxA 3x rope, 316Ti 180inch L 344 320 303 FTW32-A2D3EBxA 360inch L 445 414 392 FTW32-A2D3FBxA 5000mm L 394 367 347 FTW32-A2D3CBxA 10000mm L 445 414 392 FTW32-A2D3DBxAPlease notice that FTW32 does not come with a CSA approval!
Prices valid until 31.08.2018 in CAD per unit (not including shipping and applicable sales taxes). See
Endress+Hauser Terms and Conditions
Is this Liquipoint level switch not the perfect match for your application?
Liquipoint T sensors are used in conductive liquids for determining point levels. Depending on the number of measuring points, measuring tasks such as overspill protection, dry running protection, two-point control of pumps or multiple point detection can be implemented within an existing process connection.
An alternating voltage exists between the rod probes in an empty tank. As soon as the conductive liquid in the tank creates a connection between the ground rod probe and the maximum rod probe, for example, a measurable current flows and the Liquipoint T switches.
By using alternating voltage, corrosion of the probe ends and electrolytic destruction of the product is avoided.
Probes with integrated electronic insert (compact instrument version)
Probes without integrated electronic insert (separate instrument version)
Compact version: two/three (Always ∆S-mode - only three rod-/rope versions) rods or ropes;
Separate version (With integrated line monitoring - in combination with level limit switch FTW325): two/three/five rods or ropes
Rod: 100 to 4000 mm (4" to 157");
rope: 250 to 15000 mm (10" to 590")
Minimum conductivity ≥10 µS/cm Cable specification Use standard cable (25 Ω per core)Operating conditions Medium temp. –40 to +100 °C (–40 to +212 °F) Ambient temp. –40 to +70 °C (–40 to +158 °F) Pressure –1 to +10 bar (–14.5 to +145 psi) Ingress Protection IP 66 Process connection NPT 1½"Material Electrodes Rods: 1.4404 (316L)/insulation: PP; ropes: 1.4571 (316TI)/insulation: FEP; weight: 1.4435 (316L) Process connection PPS Housing F16
For compact instrument version;
For separate instrument version;
Dimensions (in mm)
Compact-instrument version with electronic insert
Separate instrument version without electronic insert
Electrical connection – Probes with electronic insert
(compact instrument version)Electronic insert FEW52
Supply voltage U = 10.8 to 45 V DC Current consumption Max. 25 mA Load connection Open collector; PNP Switching voltage max. 45 V Connectable load
Temporary (max. 1 sec): max. 2 A
Continuous: max. 200 mA;
Protected against reverse polarity YesElectronic insert FEW54 Supply voltage
20 to 55 V DC or
20 to 253 V AC, 50/60 Hz
Current consumption 60 mA Peak inrush current Max. 2 A, max. 400 μs Pulse frequency Approx. 1.5 s Output Two potential-free changeover contacts (DPDT) Contact load capacity U~ max. 253 V, I~ max. 4 A, U = 30 V/4 A; 150 V/ 0.2 A Power consumption <2.0 WElectronic insert FEW58 Supply voltage see Technical data of connected isolating amplifier according to IEC 60947-5-6 (NAMUR). Use with a separate contactor according to IEC 60947-5-6 (NAMUR); output signal leap of high to low electricity on limit (H-L-flank). Two-wire signal transfer H-L-edge 2.2 to 6.5 mA/0.4 to 1.0 mA Output signal of damaged sensor <1.0 mA On access to a multiplexer the cycle time is to adjust on min. 2 sec.
Electrical connection – Probes without integrated electronic insert
Technical DatasheetMore documents for FTW31More documents for FTW32