Capacitive level sensors DLS–35, Dinel-Level and Flow Measurement

Capacitive level sensors DLS–35, Dinel
Capacitive level sensors DLS–35, Dinel

Capacitive level sensors DLS® are designed for limit sensing of the level of liquid and bulk solids in tanks, sumps, tubes or, hoppers, silos, etc. The sensors are manufactured in several modifications of sensing electrodes (rod and rope). The electrodes can be given an insulating coating, a useful feature in case of adhesive, aggressive, or conductive media sensing. Rod electrodes are also available in a version with a reference tube for measuring fluids in tanks made from a non-conductive material.

Sensors are manufactured in the following configurations: N – for non-explosive areas, Xi – Explosion-proof – intrinsically safe for hazardous (explosive) areas, and XiM – Explosion-proof – intrinsically safe for use in mines with methane or flammable dust presence danger (see technical specifications). There are high-temperature performance NT, XiT, XiMT available. DLS is offered in variants with various types of process connections (metric and pipe thread, pressure thread NPT).

Features

  • Direct mounting into various containers, vessels, silos, tanks, filling inlets, reservoirs, etc.
  • Outputs NPN, PNP, NAMUR (for explosive areas)
  • Sensitivity and hysteresis fluently adjustable
  • Supply voltage 7 … 36 V DC (NAMUR 8 … 12 V DC)
  • Material of housing and electrode from stainless steel
  • Process coupling – thread M27x2; M30x1.5; G3/4“ or Triclamp
  • LED state indication
  • Xi, XiT versions for usage in explosive areasor, or Xd version for usage in flamable dusts areas, or XiM, XiMT versions for mining environments with a risk of hazard by methane or coal dust

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Specification

Power consumption (variant DLS-35N(T))  7 … 34 V DC
Power consumption (variant DLS-35N(T)) max. 5 mA
Max. switching current (NPN, PNP output) 300 mA
Residual voltage – ON state max. 1,5 V
Input resistance / electric strength  1 MΩ / 200 V DC
Coupling capacity (housing – power)/ dielectric strength  50 nF / 350 V AC
Coupling capacity (electrode – power) / dielectric strength 47 nF / 350 V AC
Protection class
type DLS-35_-_ _-C-_-_ IP67
type DLS-35_-_ _-A(B,V,H)-_-_ IP68
Cable (versions with cable outlets) PVC 3 x 0,5 mm2
Weight (excl. electrode and cable)
variant N cca 0,3 kg
variant NT cca 0,6 kg
Power supply voltage  8 … 9 V DC
Current consumption (disconnected/ connected) – NAMUR  ≤ 1 mA / ≥ 2,2 mA
Limit values Ui = 12 V DC; Ii = 15 mA; Pi = 45 mW; Ci = 15 nF; Li = 10 μH
Reference value LC for the parameters of the used cable typic C < 150 pF/m
typic L < 0,8 μH /m

Download Catalog: CAPACITIVE LEVEL SENSORS DLS-35 Dinel Level and Flow Measurement

Ref: Dinel.cz