PS-220 Analog Controller | Leakwise

Typical PS-220 and Leakwise ID-220 Series Sensor applications include oil spill/leak monitoring in tank farm sumps, discharge from wastewater treatment plants, hydrocarbon pipeline pumping stations, hydroelectric and fossil fuel power plants, transformer substations, groundwater monitoring wells, remediation sites, etc.

PS-220 Analog Controller

• Low-power consumption.
• Built-in self-diagnostics of the controller and Leakwise Sensor.
• Simple calibration procedure.

PS-220 Operation

The PS-220 supplies stabilized 12 VDC for powering the sensor. The returned current signal from the sensor is filtered and amplified, and then it is compared to two (2) alarm set-points to determine the status that the sensor reports: Water, Oil, High-Oil or Air, depending on the application. There are two relay outputs with dry contacts for reporting the status. An additional fail-safe operated relay reports sensor or power failure. There is an option to turn on a low-pass filter for applications with turbulent water and avoid false alarms. An optional 4-20 mA output reports oil layer thickness. An optional Bar-Graph visualize the oil layer thickness.

PS-220 Controller Specifications and Options


PS-220 Description

Cable length to Sensor

Wiring Connections

PS-220 Controller is an analog signal processor and power supply in a NEMA 4 enclosure, and supports a single ID-220 Leakwise sensor.
Ambient temperature range: -40 - 85° C (-40 - 185° F)
Up to 1,200 m (3,937 ft.) subject to hazardous area restrictions.
Two alarm relays with dry contacts and one fail contact: SPDT rated 4A (3A for fail contact) at 250 VAC or 30 VDC, normally open and normally closed, and four indicating lights: Air / High Oil, Oil, Water, Fail. Includes a built-in diagnostics feature.
Terminal blocks: 14 AWG maximum for sensor and 4-20 mA output wires; 12 AWG maximum for power and relays wires.


/N4 for NEMA 4X (IP65): 300 x 190 x 120 mm (12.0 x 7.5 x 4.7 in), 2 Kg (4.4 lb.);
/N7 for NEMA 7: 278 x 259 x 166 mm (11.0 x 10.2 x 6.5 in). 8.5 Kg (18.7 lb.);
/Exd for Ex d: 355 x 276 x 200 mm (14.0 x 10.9 x 7.9 in), 12.5 Kg (27.5 lb.);
/BP without an enclosure, to be mounted in a local cabinet. 190 x 180 x 130 mm, 1 Kg.
220 or 110 VAC (50 - 60 Hz) or 9 - 36 VDC (@ 5 Watts); may also be solar powered.
4-20 mA analog output proportional to hydrocarbon thickness up to 25 mm (1.0 in), current source
Bar graph display (20 bars) of hydrocarbon thickness in addition to 4-20 mA analog output.
Zener Safety Barriers to allow installation of the sensor in hazardous areas.
Audio alarm option (available in weather-proof or explosion-proof enclosure).

Other Controllers – Refer to separate data sheets

Digital Signal Processor for Multiple (2 / 4 standard, more in a network) ID-220 Series sensor support, with various output options, including relay, lights, 4-20 mA, LCD, Modbus in RS-232 and RS-485 communication, and cellular remote connectivity.
Wireless communication – Point-to-Point data radio.

PS-220 Controller Certifications

For hazardous areas: North America - NEMA 7, Class I, Div 1, Groups B, C & D; NEMA 4 Europe ATEX & IECEx - II2(1)GD, Ex db [ia Ga] IIC T6 IP66
Approved for operation in hazardous location
ISO 9001:2015 Certified

1 Specifications may be subject to change without prior notice.
For special applications, it may be possible to offer products that deviate from the above specifications.



Enclosure Options

Input Power Options

 All rights reserved. 300 00096 Rev E


PS-220 Enclosure

Combined System

Technical Specifications1

The PS-220 Analog Leakwise Controller is a power supply and signal processor that interfaces with a single (1) Leakwise ID-220 Series Sensor to report hydrocarbons spill/leak alerts, including layer buildup and thickness, to users via outputs interfaces for local or remote reporting. The PS-220 has a well proven reliability and is cost effective for a basic monitoring system. It can be AC or DC line powered.



PS-220 in NEMA 4 Enclosure

PS-220 in Exd Enclosure, with Bar-Graph