PMA KS 90 Inert Gas (I.G.) Control Panel – Cooling Water Level Controller & I.G. Pressure Controller

Product Information

Controller Manufacturer	PMA (Prozeß- und Maschinen-Automation GmbH, Germany – now West Control Solutions)
Controller Model	KS 90 (2 pcs, marked "KS 90" on the front)
Product Type	Inert Gas (I.G.) System Control Panel / Front Plate with two PMA KS 90 process controllers and a selector switch
Controller 1	COOLINGWATER LEVEL CONTROLLER – unit mmH2O – tag 2418
Controller 2	I.G. PRESSURE CONTROLLER – unit mBar – tag 8005
Selector Switch	BILGE DRAIN VALVE: 1 – AUTOMATIC, 2 – CANCEL – tag S9
Panel Manufacturer / Inert Gas System Maker	Not clearly visible in the supplied photograph
Controller Order Code / Part Number	Not clearly visible in the supplied photograph
Serial Number	Not clearly visible in the supplied photograph
Power Rating	Not clearly visible in the supplied photograph
Country of Manufacture	Not clearly visible in the supplied photograph
Condition	Refurbished (subject to confirmation)
Supplier	SM MARINE SERVICE™, Chattogram, Bangladesh

Product Introduction

This is a marine inert gas (I.G.) system control panel fitted with two PMA KS 90 digital process controllers: one used as the Cooling Water Level Controller (mmH2O) and one as the I.G. Pressure Controller (mBar), together with a Bilge Drain Valve AUTOMATIC / CANCEL selector switch. Panels like this are used on oil and chemical tankers to control the inert gas plant.

SM MARINE SERVICE™ (https://www.smmarineservice.com/) supplies PMA KS 90 controllers, inert gas system control panels and other marine automation spare parts to ship owners and ship managers worldwide.

What Is This Equipment?

The grey front plate carries two PMA KS 90 controllers. Each controller has a 4-digit main display (process value), a second 4-digit display with "W2" indication (setpoint / second setpoint), status LEDs, and four keys: Auto/Manual, Enter/Select and Up/Down arrows.

The left controller is labelled COOLINGWATER LEVEL CONTROLLER and works in mmH2O (water column) – typically used to keep the cooling / scrubber water level in the inert gas system. The right controller is labelled I.G. PRESSURE CONTROLLER and works in mBar – used to control the inert gas pressure. Below them, selector switch S9 selects the BILGE DRAIN VALVE mode: 1 – Automatic or 2 – Cancel.

The white tags 2418, 8005 and S9 are the ship's / panel builder's equipment tag numbers. The exact inert gas system maker is not visible in the supplied photograph.

Main Features

• Two PMA KS 90 digital process controllers on one front plate
• Cooling water level control in mmH2O
• Inert gas pressure control in mBar
• Dual displays: process value and setpoint (W2 second setpoint indication)
• Auto / Manual operation from the front keys
• Status LEDs for outputs and alarms
• Bilge drain valve AUTOMATIC / CANCEL rotary selector switch (S9)
• Engraved label plates for easy identification

PMA KS 90 inert gas (I.G.) control panel – cooling water level controller, I.G. pressure controller and bilge drain valve switch

Main Technical Specifications

Specifications below are for the PMA KS 90 / KS 90-1 controller family (published data). Confirm the exact version from the controller's side label.

Format	48 x 96 mm (1/8 DIN), panel depth approx. 118 mm
Front Protection	IP65
Display	4-digit LED main display + second display
Inputs	Universal: thermocouple, RTD, mA, mV, V (KS 90-1)
Outputs	Relay, logic, mA / V (up to 6 outputs on KS 90-1)
Control Modes	On/off, continuous PID, 3-point stepping
Power Supply	90 – 250 VAC or 24 VAC / 18 – 30 VDC (version dependent)
Interfaces	RS422/485 Modbus RTU, PROFIBUS DP (optional, KS 90-1), BluePort front interface
Operating Temperature	-20 to +65 °C (per RS listing)
Units on this panel	mmH2O (level), mBar (pressure)

Inside the Unit: PCBs, Modules & Part Numbers

PMA does not publish board-level PCB numbers for the KS 90, and no PCB labels are visible in the supplied photograph. Below are the functional modules and the PMA order codes we found for the KS 90 family. Board numbers are Not verified – send a photo of the controller side label or PCB for exact matching.

Controller CPU / Display Board

Front board with the LED displays, LEDs and keys; handles control algorithm and configuration. PCB number: Not verified.

Power Supply & Relay Output Board

Supplies the controller (90–250 VAC or 24 VAC/DC versions) and carries the relay / logic / mA outputs. PCB number: Not verified.

Input / Interface Board

Analog inputs for the level and pressure transmitters, optional RS485 Modbus or PROFIBUS interface. PCB number: Not verified.

PMA KS 90 / KS 90-1 Order Codes Found

• KS90-102-0100D-000 – KS 90 controller, 48 x 96, 90–250 VAC, relay outputs (RS 418-5155)
• KS90-115-0000D-000 – KS 90 controller, 24 VAC / 18–30 VDC version (RS 736-4803)
• KS901022000E000 – KS 90-1, flat-pin, 90–250 VAC, 3 relays + mA/logic
• KS901130000E000 – KS 90-1 universal process and program controller
• 9407-999-11011 – PMA BlueControl configuration software (KS40 / KS50 / KS90)
• 9407-998-00003 – PMA interface cable for K-series controllers

Main Components & Related Units

• PMA KS 90 controller (tag 2418) – Cooling water level controller, mmH2O
• PMA KS 90 controller (tag 8005) – I.G. pressure controller, mBar
• Selector switch S9 – Bilge drain valve 1-Automatic / 2-Cancel
• Level and pressure transmitters – field sensors connected to the controllers (models Not verified)
• Control valves / bilge drain valve – operated by the controller outputs (models Not verified)
• Related PMA controllers: KS 90-1, KS 92-1, KS 40, KS 50

Marine & Industrial Applications

• Inert gas (I.G.) systems and inert gas generators on oil and chemical tankers
• Scrubber / cooling water level control
• Inert gas main pressure control
• Bilge drain valve control
• General process control: level, pressure, temperature and flow

Close-up of the two PMA KS 90 controllers: cooling water level (mmH2O) and I.G. pressure (mBar)

Common Problems & Troubleshooting

• Display blank: check controller power supply, fuses and terminal connections.
• Wrong or unstable reading: check the level / pressure transmitter, signal cable, input range and scaling.
• Output not switching: check relay output, wiring and the valve / solenoid.
• Controller stuck in manual: check the Auto / Manual key status LED.
• Keys not responding: worn front keypad or display board fault.
• Bilge drain valve not working in Automatic: check selector switch S9 contacts and wiring.

Safety notes: isolate power before opening the panel. Changing inert gas pressure or level settings affects cargo tank safety – follow the ship's inert gas system manual and safety procedures.

Maintenance Tips

• Record all controller configuration and setpoints before replacement.
• Check transmitter calibration regularly.
• Keep the front panel clean and dry; tighten terminals.
• Test the bilge drain valve function in both switch positions.

Spare Parts & Replacement Availability

SM MARINE SERVICE™ supplies PMA KS 90 controllers, the complete inert gas control panel and related spare parts. Condition and availability are subject to confirmation. For a quick quotation, please send:

• Photo of the controller side label (order code, serial number, supply voltage)
• Photo of the panel and inert gas system maker nameplate
• Vessel name and IMO number
• Required quantity and delivery port

We ship worldwide by courier and air freight.

Why This Equipment Is Still Used

PMA KS 90 controllers are rugged and simple to operate, and many tankers still run their inert gas plants with the original panels. Replacing a failed controller or panel with the same type avoids rewiring and reconfiguration of the inert gas system.

FAQ

1. What is this panel?
An inert gas (I.G.) system control panel with two PMA KS 90 controllers and a bilge drain valve switch.

2. What does the cooling water level controller do?
It controls the cooling / scrubber water level, shown in mmH2O.

3. What does the I.G. pressure controller do?
It controls the inert gas pressure, shown in mBar.

4. What is the S9 switch?
The bilge drain valve selector: 1 – Automatic, 2 – Cancel.

5. Who makes the KS 90?
PMA of Germany, now part of West Control Solutions.

6. Which order codes exist for the KS 90?
Examples are KS90-102-0100D-000, KS90-115-0000D-000, KS901022000E000 and KS901130000E000. Check your controller's side label.

7. Do you supply PCBs for the PMA KS 90?
Yes, on request. Send the PCB photo; board numbers are not publicly listed.

8. What is 9407-999-11011?
The PMA BlueControl configuration software for KS40, KS50 and KS90 controllers.

9. Can I buy only one controller?
Yes, single PMA KS 90 controllers or the complete panel can be quoted.

10. Do you ship worldwide?
Yes, SM MARINE SERVICE™ ships to ports worldwide.

Short Product Description

This marine inert gas (I.G.) system control panel carries two PMA KS 90 digital process controllers and a bilge drain valve selector switch. The left controller (tag 2418) is the cooling water level controller, reading in mmH2O; the right controller (tag 8005) is the I.G. pressure controller, reading in mBar. Each KS 90 has dual LED displays, Auto/Manual and setpoint keys, and status LEDs. Selector switch S9 sets the bilge drain valve to Automatic or Cancel. The panel is used on oil and chemical tankers. SM MARINE SERVICE™ supplies refurbished PMA KS 90 controllers and inert gas panel spares worldwide.

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SM MARINE SERVICE™ – Marine Automation & Navigation Equipment Supplier

Available Equipment Conditions: New • Used • Refurbished • Reconditioned (Specific product condition and availability are subject to confirmation.)

Stock Locations: Bangladesh • China

Services: Worldwide Shipping • Technical Support • Spare Parts Supply • Marine Equipment Sourcing

Samir Market, DT Road, Pahartali, beside CDA Market, Chattogram, Bangladesh

Mobile / WhatsApp / Viber: +88 01818 929292

Email: info@smmarineservice.com

Website: https://www.smmarineservice.com/

Contact SM MARINE SERVICE™ today for a quotation on the PMA KS 90 inert gas control panel and PMA KS 90 controllers.

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