Product Description

The all new DCS IS is an intrinsically safe capacitive level sensor which is a reliable alternative to our range of float switches, specifically designed for use in cryogenic applications.

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Features Include:

  • ATEX, IECEx and UKCA Intrinsically Safe Approved
  • Microprocessor Based Pulse – Counting Technology
  • Probe Lengths can be made to measure to suit specific applications – maximum 6m
  • Suitable for non-conductive liquids only.
  • Easy Push Button Set-up of Span and Zero Points.
  • Process Temperature from -200°C to +200°C


Operating Voltage 15 – 25.2VDC (a minimum of 24V should be applied to the barrier)
Operating Current < 50mA
Intrinsic Safety Parameters







25.2V DC

155 mA

1.2 W



Resolution < 2mm +/- 0.5mm
Operating Temperature (Head) -40°C to +70°C
Stem Minimum Operating Temperature

Standard Version

Low Temperature Version



Stem Maximum Operating Temperature





Output Accuracy ±1% @ 50% full scale deflection (20°C)
Current Output Signal 1 two wire 4 – 20mA
Voltage Output Signal 2 two wire 0 – 5Vdc
Calibration (Zero, Span) Stored in NVM
Dielectric Constant of Liquid (- Ꜫ -) > 3.1
Response time (currently) 1000ms
Response time (enhanced) 250ms / 500ms
Weight 1.90Kg
Enclosure Rating IP66 / IP68
Electrical Connections Screw Terminals
Head Material 316L
Stem Material 316L Stainless Steel
Other wetted parts PTFE
Maximum Stem length Up to 6m
Stem Diameter 12mm
Mounting Orientation Vertical or horizontal
Cable Entry M20 x 1.5p or 1/2”NPT
Mounting Thread 1″ BSP Parallel (standard, other threads and flange mounting available)
EMC Standards EN61000-6-1, EN61000-6-2, EN61000-6-3, EN61000-6-4, EN61000-4-2
UKCA & ATEX Standards EN IEC 60079-0:2018


IECEx Standards IEC 60079-0:2017 Edition 7

IEC 60079-11:2011 Edition 6



The DCS can be ordered with any length of sensor stem up to 5975mm (19’ 7¼”). The stem length is the active measuring length of the sensor and should not be confused with the stem depth. The stem depth is 60mm longer and includes the non-active section above the measuring length. The stem depth (measuring +60mm) is the length from the shoulder of the mounting thread to the end of the stem probe (Non-standard mounting may have a different length of non-active section).


The DCS IS is suitable for measuring non viscus liquids with a dielectric constant (also known as relative permittivity) shown in the tabulated data above. Viscous liquids may produce a delayed level reading, block the sensor stem and eventually dislodge the internal stem spacers.

The sensor stem is constructed from a stainless steel 316 tube around a stainless steel 316 solid rod.  The rod is held centrally inside the tube using a PTFE spacer with cut outs to allow the liquid to flow inside the tube. A breather hole at the top of the stem equalises the air pressure.

Ordering Code

Please contact the sales office at [email protected] or +44 (0)1494 566 046 do discuss this product further.


All electrical equipment should be installed by a qualified/certified electrician.

Deeter Electronics Ltd follows a policy of continual development of its products and reserves the right to change specifications and/or features without notice.