ID-200 Series

The ID-200 Series Tank Desalter Interface Detectors are used for interface measurement and control in all types of liquid/liquid and vapor/liquid separation processes including emulsions and foam.


The ID-200 Series Interface Detectors are used for interface measurement and control in all types of liquid/liquid and vapor/liquid separation processes including emulsions and foam. A wide range of models, process connections, and output options are available for the control of a variety of process installations such as Tanks, Decanters, Dehydrators, Desalters, Coalescers, etc. The ID-200 Series advanced control capabilities can be used to automate upset responses, antifoam and demulsifier chemical feed systems, and eliminate cross-contamination of separating phases.

Energy Absorption Technology

Water absorbs a large amount of the signal.
Oil absorbs relatively small amounts of the signal.
Water cut display is relative to the amount of signal being absorbed.

An added benefit of using this innovative control technology is increasing output of the Refinery by Optimizing Separation Control. Most plants are able to surge throughput 5% to 10% by enhancing separation control on the following units: Desalters, Crude & Finished Product Storage Tanks, API Separator, Slop Oil Tanks, Amine Contactors, Sour Water Strippers, Alky Units, Merox Units, Acid Settlers, Coker Blow-Down Drums, Sulfur Units, etc. This amplified throughput translates into millions of additional profits with a lowest investment.


Immediate Savings

By installing the ID200, a US Refinery was able to save this much year after year.


Technical Information

Operating Range
Emulsion Concentration 0-100% Hydrocarbon/ Water by Volume
Process Temperature Standard: 32°F to 300°F (0°C to 149°C)
High-Temp: 32°F to 450°F (0°C to 232°C)
Ambient Temperature -40°F to 131°F
Pressure Rating Up to 3000 PSI
Electrical Rating
ID-201, ID-202, ID-205 Probe Intrinsically Safe: Class 1, Div.1, Groups C & D, T3C
ATEX: II 1G EEx ia IIB T4 (-40ºC<Ta<+70ºC)
II 1G EEx ia IIC T5 (-40ºC<Ta<+65ºC)
Power Required 115/240 VAC 50-60 Hz or 12/24 VDC (±20%)
Normal Power Consumption 3 Watts
Maximum Power Consumption of 250 Watts (including lights)
PS-201 Enclosures Weatherproof (N4X) NEMA 4X
Explosion Proof (N4/7) NEMA 4/7 Class 1, Div. 1, Groups C&D
Wiring Connections Flame-Proof (N4/7) NEMA 4/7 ATEX: II 2G Ex d[ia] IIB T6 (-20ºC<Ta<+55ºC)
Barrier Terminal Block #18 AWG Maximum Diameter
Materials Of Construction
Standard Optional
Probe 316 Stainless Steel, Teflon & Peek Duplex, Hastalloy, Monel (Others available upon request)
Seals Aflas and Teflon Viton
Optional Process Connection
SH-2″/SS 2″ NPT Seal Housing, 316 Stainless Steel
SH-2″/SS 2″ NPT Seal Housing, Carbon Steel
CF-¼”/SS ¼” NPT Compression Fitting, 316 Stainless Steel
CF-¼”/CS ¼” NPT Compression Fitting, Carbon Steel
Flange Connections        ANSI 150# to 1500#
Model Variations
ID- 201         ½” shaft; Standard: 48″ (4 Ft.); Minimum: 12″ (1 Ft.); Maximum: 120″ (10 Ft.)
ID-202 For probe lengths greater than 10 feet, sturdier 1 ¼” shaft assemblies from 5 foot sections via threaded connections.
ID-205 Shaft replaced by cable for suspension of antenna down through the top of the tanks, wells, platform legs, caverns, etc.
Standard Output Option
ID-201/420 Powered 4-20 mA into 400 Ohms Maximum; 4 mA = Oil, or Lowest Water Content
ID-201/RL Relay Contact 1A; 115V; NO and NC; (SPDT); Fail Safe On Water or Oil
Adjustable Trip Point
ID-201/RL/420 Relay and 4-20mA Options
ID-201/RL/LI Relay with Local Indicating Lights; Amber = Oil, Blue = Water


CSA-US Canadian Standards Association /UL Specifications ATEX European Committee for Electrical Standardization GOST-R Russian Approval, ROSTECHNADZOR Safety JRIIS Japanese Research Institute of Industrial Safety