Capacitive point level switches for solids

 

 

Capacitive point level switches for solids

Nivector FTC968 / FTC968Z

from €100.-
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    • No moving parts

    • Maintenance-free operation

    • No contact with product when using protector

     

    Specs at a glance

    Function Level switch
    Product Bulk solids ≤ 10 mm grain size
    Product dielectric constant εr ≥ 1.6
    Approval ATEX II 1/3 D
    Product temperature –20 to +80 °C (–4 to +176 °F)
    Probe length 81 mm (3,19")
    Process pressure –1 to +6 bar (–15 to +87 psi)
    Product / VersionPrice / pcs. in EUROrder code
    Nivector FTC968: version for non hazardous area1 to 34 to 1011+
    Nivector FTC968 AC Point level switch, capacitive. Application: powder, bulk solids. Process connection: G1. Immersion: 20-71mm. Output: 2-wire, 21-253VAC. Material isolation/housing: PC, IP65.
    • No set-up required.
    • No moving parts.
    121,-109,-100,- 918098-0000
    Nivector FTC968 DC PNP. Same as above but with 3-wire PNP output and 10-55VDC.121,-109,-100,- 918098-0140
    Product / VersionPrice / pcs. in EUROrder code
    Nivector FTC968Z: version for Ex area1 to 34 to 1011+
    Nivector FTC968Z AC Point level switch, capacitive. Application: powder, bulk solids. Approval: ATEX II 1/3D. Connection: G1, brass nickel plated. Immersion: 20-71mm. Output: 2-wire, 21-253VAC. Material housing: Halar (ECTFE) IP65.
    • No set-up required.
    • No moving parts.
    166,-149,-136,- 918098-1000
    Nivector FTC968Z DC PNP
    Same as above but 3-wire PNP output and 10-55VDC.
    166,-149,-136,- 918098-1140

    Accessoires

    Product / VersionPrice / pcs. in EUROrder code
    Protector for Nivector FTC96842,32 71329077
    Protector for Nivector FTC968Z42,32 71329083

    Prices valid until 08.31.2017 in EUR per unit (not including shipping and applicable sales tax). See
    Endress+Hauser Terms and Conditions

  • Application

    The Nivector capacitive point level switch is suitable for all kinds of powdered and fine-grained solids (e.g. plastic granulates, washing agents and animal feed). Because of its materials of construction, Nivector is also suitable for use with foodstuffs such as grain, sugar, herbs and spices or semolina.

    Function

    The face of the Nivector unit acts as a sensor. If the solids come into contact with the front face, then the electronics change the switching mode. The Nivector can be switched to either min or max fail-safe mode and a LED indicates its switching status. A screen electrode prevents interference through the container walls or lateral solids build-up.

    Application Example

    Capacitive level switches for solids - Application example

    The Nivector FTC968 is a compact point level switch, to which a miniature contactor, a solenoid valve or a programmable logic controller (PLC) may be directly connected.

  • Technical data

    Output
    Safety circuit Selectable minimum or maximum
    Connectable load

    AC:
    short duration (40 ms): max. 1.5 A max. 375 VA at 253 V or max. 31.5 VA at 21 V (not protected against short circuit);
    continuous: max. 87 VA at 253 V, max. 7.4 VA at 21 V, min. 2.5 VA at 253 V (10 mA), min. 0.5 VA at 21 V (20 mA) voltage drop max. 12 V, leakage current max. 4 mA

    DC:
    short duration (50 ms): max. 0.5 A, max. 55 V (clocked overload and short-circuit protection);
    continuous: max. 350 mA, residual voltage < 3 V, leakage current < 100 µA

    Switching time Approx. 0.2 s covered/uncovered
    Power supply
    AC 21 to 253 V, 50/60 Hz  (with FTC968Z max. 250 V)
    DC 10 to 55 V
    Operating conditions
    Ambient temperature –20 to +60 °C (–4 to +140 °F)
    Material temperature

    FTC968: –20 to + 80 °C (–4 to +176 °F)

    FTC968Z: –20 to +75 °C (–4 to +167 °F)

    Operating temperature –20 to +80 °C (–4 to +176 °F)
    Storage temperature –25 to +85 °C (–13 to +185 °F)
    Operating pressure –1 to +6 bar (–14.5 to +87 psi)
    Grain size Up to 10 mm (0.4")
    Relative dielectric constant of measured material Min. 1.6
    Ingress Protection

    FTC968: IP 65/IP 67 according to Standard EN 60529;

    FTC968Z: IP 65

    EMC Interference Emission to EN 61326, Electrical Equipment Class B; Interference Immunity to EN 61326
    Mechanical construction
    Process connections

    FTC968: Thread G1 A with two nuts, thread R 1 (DIN 2999)

    FTC968Z: Thread G1 A with two nuts

    Protector: Thread G½ A

    Electrical connection Screwed terminals for max. 1.5 mm² wires in cable entry PG 11 (can be rotated as required), for 6 to 8 mm (0.24 to 0.31”) cable diameter
    User interface
    Display in connection area Red LED for display of switching mode, visible from the outside
    Operation in connection area Rotary switch for switch-over from minimum to maximum safety mode, potentiometer for switching sensitivity
    Approvals
    Ex approval FTC968Z: ATEX II 1/3 D 

    Dimensions (in mm) and materials

    FTC968

    Capacitive level switches for solids - Dimensions

    Materials in contact with the material being measured: housing made from blue PC, lock nuts made from black PA

    Other materials: Connection area: transparent PC

     

    Installation according to instruction manual

    FTC968Z.

    Capacitive level switches for solids - Dimensions of the ATEX approved version

    Materials in contact with the material being measured: housing made from white ECFTE, threaded sleeves made from nickel-plated brass, lock nuts made from black PA

    Other materials: Connection area: transparent PC

     

    Installation according to instruction manual

    Optional protector

    The optional protector has a G1½" thread and protects the Nivector from damage by particularly abrasive or coarse material. It allows removal of the Nivector from a full silo for function testing.

    Electrical connection

    Capacitive level switches for solids - Connecting

    a) AC version

    b) DC version (PNP)

  • More documents for FTC968