Name

Net capacitive Level switch

Model

DLS

Feature

Ultra-high sensitivity type

Description

DITECH’s proprietary net capacitive level switch is immune to the influences of electrical conductivity variations and offers the highest sensitivity among electronic level switches.

Operating
principles

Every liquid, granular material and powder is more than a simple dielectric material: they exhibit various electrical characteristics.

Common capacitive level switches capture overall changes in electrostatic capacitance to output detection signals. The DLS model detects net changes in electrostatic capacitance by accurately correcting changes in electrical conductivity and therefore offers ultrahigh sensitivity.

Specifications

Stable detection range	Min ≦ 0.1pF 10⁷Ω Max ≧ 60pF 15×10²Ω
Output contact	a,c,b 200V 1A 100VA (Non-inductive load) / Open collector / Thyristor / SSR
Input power	AC105V/210V 50/60Hz or DC24V
Power consumption	3W
Allowable temperature	Detector：　－200℃～＋1100℃ (Depends on the specifications) Transducer：　－25℃～＋70℃
Allowable load	Detector：　2000kg Concentrated at detection tip 　　　　　　(Depends on the specifications)
Allowable pressure	Detector：　100MPa (approx. 1020kg/cm²G) 　　　　　　(Depends on the specifications)
Installation	Detector：　Flange mounting　Screws mounting 　Ferrule　IDF, etc.
Material	Detector：　SUS304　SUS316　SUS316L　Hastelloy　Titanium 　　　　　　Tantalum　Nickel　PTFE　Ceramic, etc. Lining：　PTFE　Glass　Rubber, etc. Head case：　Light alloy　SUS304　Salt resistant paint case, etc.

Configuration

Model DLS
(Non-explosion-proof type)

＜Integrated transducer unit type＞

Detector

Options (DLS)

Lightning arrestor

Monitoring device

Common options available for models

Products and Service

Level switches

Capacitive Level switch

Model NQH / Model NSH

Net capacitive Level switch

Model DLS

General-purpose Capacitive Level switch

Model OCT

Impedance type Level switch

Model NQS / Model NSS

Guard type Level switch

Model NQS-G / Model NSS-G

Vibrating Level switch

Model DTA / Model STA

Vibrating flat Level switch

Model DTA-F / Model STA-F

Vibrating Level switch for sediment

Model DTA-D / Model STA-D

General-purpose Vibrating Level switch

Model DTA-G / Model STA-G

Level switch for molten metals

Model DIM-LS / ModelIPM-LS

Conductive Level switch

Model NQS-CL・DR-L / Model NSS-CL

Blower-equipped Level switch

Model NQH・DTA-BL / Model NSH・STA-BL

Level transmitters

Capacitive Level transmitter

Model QBS / Model NSB

Impedance type Level transmitter

Model IP-QBS / Model IP-NSB

Guard type Level transmitter

Model QBS-G / Model NSB-G

Self-balancing interface Level transmitter

Model NQC / Model NSC

Level transmitter for molten metals

Model DIM

Level transmitter for vertical piping

Model QBS-VP / Model NSB-VP

Blower-equipped Level transmitter

Model QBS-BL / Model NSB-BL

Capacitive Level transmitter for large tanks

Model QBS-LL / Model NSB-LL

Vertically anchored wire Level transmitter for large tanks

Model QBS-AW / Model NSB-AW

Non-contact self-balancing Level transmitter

Model DNC

Level transmitters for liquid

Capacitive water・fluid Level transmitter

Model QBS-WF / Model NSB-WF

Capacitive interface Level transmitter

Model QBS-IF / Model NSB-IF

Impedance type fluid Level transmitter

Model IP-QBS-FL / Model IP-NSB-FL

Impedance type interface Level transmitter

Model IP-QBS-IF / Model IP-NSB-IF

Relative permittivity-correcting Level transmitter

Model QBS-DC / Model NSB-DC

Float type Level tramsmitter

Model FM / Model FS

Various transmitters

Vibrating viscometer

Model QBS-V / Model NSB-V

Electrostatic voltmeter

Model S-21

Electrostatic ammeter

Model S-22

Vibrating Densitometer

Model QBS-D / Model NSB-D

Vibrating Coagulometer

Model QBS-C / Model NSB-C

Capacitive Moisture meter

Model QBS-MM / Model NSB-MM

Turbine Flow meter

Model DM-11 / Model TM-11

Buildup meter and Densitometer

Model QBS-CT

Electromagnetic induction type metal detector

Model DIM-MD

Vibrating viscometer for laboratory

Model V-1

Transmitters for liquid

Relative-permittivity meter

Model QBS-RP / Model NSB-RP

Conductivity meter

Model QBS-CM / Model NSB-CM

Minimal-leakage meter for piping

Model QBS-LE / Model NSB-LE

Capacitive oil-in-water meter

Model QBS-OW / Model NSB-OW

Capacitive moisture-in-oil meter

Model QBS-MO / Model NSB-MO

Weir type Flowmeter

Model QBS-FM / Model NSB-FM

Various detectors

Lump detector

Model D-S / Model LD-11

Moisture detector for large flexible containers

Model D-MF

Piping powder flow detector

Model OBS-PF / Model NSB-PF

Microwave-based flowing-powder detector

Model D-MM3

Impact type falling-powder detector

Model D-I

Three-dimensional presence detector

Model D-TP

Photoelectric film detector

Model D-TF

Portable moisture detector

Model D-MP

Detectors for liquid

Conductive switch

Model NQS-CS・DR / Model NSS-CS

μm-class ultrathin oil film detector

Model QBS-OFμ / Model NSB-OFμ

mm-class oil film detector

Model NQH-OFm / Model NSH-OFm

Drain pipe leakage detector

Model NQS-LE / Model NSS-LE

Moisture detector for quenching oil

Model D-Q

Foam detecting switch

Model NQH・NQS-FO / Model NSH・NSS-FO

Various options

Level switch operation checker

Model OC-NH

Operation indicator lamp for Level switch

Model NQH-○○○W / Model DTA-○○○W

Operation indicator lamp for general-purpose Level switch

Model OCT-○W

Integrated type indicator

Model ○○○-W

Separated type indicator

Model LI-100

Electrostatic capacitance measuring device

Model DM-C

Capacitance generator

Model SVC-500 / Model SVC-1000

Fixed resistor for conductivity meter

Model CM-R

Small measurement probe for laboratories

Model DL-MP

Oil film detector alarm setting device

Model AS-3

Static arrestor

Model SP-2