Mode of operation

Measuring principle

Vibrating point level switch

Input

Measured variable

High, low, and demand

Measuring frequency

• Standard

125 Hz

• Liquid/solid interface and short fork version

350 Hz

Output

PNP

Open collector:
Permanent load max. 0.4 A,
short-circuit and overload protected
Turn-on voltage: max. 50 V (reverse protection)

2-wire without contact

Load current:

• Min. 10 mA
• Max. 500 mA permanent
• Max. 2A < 200 ms
• Max. 5A < 50 ms

Voltage drop on the electronic module: max. 7 V with closed electric circuit

Cut-off current with open electric circuit: max. 5 mA

Relays

• Version with 1 relay

SPDT relay

• Version with 2 relays

DPDT relay

Relay delay

• From loss of vibration: approximately 1 second
• From resumption of vibration: approximately 1 ... 2 seconds

Signal delay

• Probe uncovered to covered: approximately 1 second
• Probe covered to uncovered: approximately 1 ... 2 seconds

Relay fail-safe

High or low, switch selectable

Alarm output

• Relay 8 A at 250 V AC, non-inductive
• Relay 5 A at 30 V DC, non-inductive

mA output

8/16 mA or 4 ... 20 mA

• Resolution

4 ... 20 mA ± 0.1 mA

Sensitivity

High or low, switch selectable

Rated operating conditions

Installation conditions

• Location

Indoor/outdoor

Ambient conditions

• Ambient temperature

-40 ... +60 °C (-40 ... +140 °F)

• Installation category

III

• Pollution degree

2

Medium conditions

• Process temperature

• All except CSA Class II, Group G:
  -40 ... +150 °C (-40 ... +302 °F)
• CSA Class II, Group G: -40 ... +140 °C (-40 ... +284 °F),
  CSA temperature code T3B

• Max. threaded bushing temperature

60 °C (140 °F)

• Max. enclosure surface temperature (Category 2D)

90 °C (194 °F)

• Max. extension surface temperature (Category 1D)

150 °C (302 °F)

• Pressure (vessel)

Max. 10 bar g (145 psi g) European Pressure Directive 2014/68/EU: Category 1

• Minimum material density

• Standard version: approx. 20 g/l (1.2 lb/ft³)
• Liquid/solid interface version: approx. 50 g/l (3 lb/ft³)
• Optional low density version: approx. 5 g/l (0.3 lb/ft³)

Design

Material

• Enclosure

Epoxy coated aluminum

Process connection

• Thread 1?" NPT [(Taper),
  ANSI/ASME B1.20.1], R ?" [(BSPT), EN 10226], and flange options
• Optional sliding bushing with 2" NPT [(Taper), ANSI/ASME B1.20.1] or BSP thread
• Thread material: stainless steel 303 (1.4301)

Tine material

Stainless steel 316L (1.4404),
PTFE-coated tines are available upon special request

Degree of protection

IP65/Type 4/NEMA 4

Conduit entry

2 x M20 x 1.5 or 2 x ?" NPT

Weight

• Standard version, no extensions: approx. 2.0 kg (4.4 lb)
• Solids/liquids version, no extensions: approx. 1.9 kg (4.2 lb)

Power supply

• 19 ... 230 V AC, +10 %, 50 ... 60 Hz, 8 VA
• 19 ... 55 V DC, +10 %, 1.5 W

Certificates and approvals

• CSA/FM General Purpose
• CE
• CSA/FM Dust Ignition Proof
• RCM
• ATEX II 1/2 D
• CSA/FM IS Class I, II, III Div. 1, Groups A, B, C, D, E, F, G, FM Class I, Aex ia IIC, CSA Class I, Ex ia IIC, available only with power supply options 5 and 6
• ATEX II 1G and 1/2 G Eex ia IIC; ATEX II 1D and 1/2 D, available only with power supply option 5