MSA 9010/9020 SIL - Gas Control System
MSA 9010/9020 SIL - Gas Control System MSA 9010/9020 SIL - Gas Control System

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The MSA 9010/9020 SIL gas warning systems are compatible with a wide range of gas detectors such as a catalytic combustion detector, semiconductor detector or 4/20 mA transmitter and can take up to two general purpose inputs.

Availability: Out of stock

Description / Features / Spec


MSA 9010/9020 SIL - Gas Control System 

The MSA 9010/9020 SIL controllers are reliable and sophisticated gas warning systems, that are compatible with a great range of gas detectors and best suited for smaller gas detection systems. The 9010 SIL rack module operates with one channel per module whereas the 9020 SIL rack module operates with two channels per control module. With the upgraded design, workers and facilities can have increased reliability in terms of safety as this controller is now SIL 2 compliant.

The 9010 SIL Control Unit is designed for one general purpose input such as a catalytic combustion detector, semiconductor detector or 4/20 mA transmitter. The 9020 SIL Control Unit is very similar however, can connect two general purpose inputs. Both are available as either a wall mounted unit for installation directly to a wall or a 19” rack module to be installed into a 19” rack (Refer to operating manual for more information).

With the modular design and dual channel capability, users can have up to 20 channels within a 19” rack. Furthermore, connect remote sensors with 2,3 or 4 wire cabling.

There are many other benefits to the user such as: being able to configure the controller without the use of additional tools; operating anomalies are displayed via the error and failure messages on the LCD screen; detectors can be changed without having to renew the controller card; configurations can be checked quickly; and it can be applied across a variety of applications.

These applications include: gas-processing industry, paint and solvent industry, chemical and petrochemical industry and wastewater treatment plants or similar.

Key Features

  • 3 alarm thresholds: C (Caution), W (Warning) and A (Alarm)
  • Passwords preventing unintended unit configuration
  • LCD display with 4 keypad buttons (ESC, Enter, up, down)
  • Possible to configure dual state inputs (digital)
  • Minimise false alarms with the internal diagnostics feature
  • Backwards compatible with prior 9010/9020 versions
  • Individual modules have their own power supply
  • IP65 Rated (Wall Mount)


Power Supply

AC Supply

100 VAC–240 VAC 50/60 Hz

DC Supply

24 VDC (19–32 VDC), ripple

Power Consumption (no load)

9010 SIL

9020 SIL

AC Supply

13 VA

15 VA

DC Supply

5 W

6 W

Detector Supply

3 W

4 W

Constant Current

100-450 mA

100-350 mA

Constant Voltage

24 VDC; 450 mA

24 VDC; 350 mA (4–20 mA transmitters)

Sensor Connection Modes

2-3 wires

Connection Terminals

For wires up to 2.5 mm²

Detector types

Passive catalytic detectors; 0 (4)–20 mA transmitters; Switch inputs

Analog Inputs

1x 0 (4)–20 mA (user configurable)

2x 0 (4)–20 mA (user configurable)

Max. loop resistance 500 Ohms

Communication interface

RS485 half-duplex, Modbus RTU; Ethernet, 10/100 Mbps, Modbus TCP, Website

Alarm thresholds

C [Caution] W [Warning] A [Alarm]

Digital Outputs

Alarm Relays

2x SPDT relay 8 A/250 VAC, resistive load, load current 10 mA–1.6 A, applies to WARNING and ALARM

Failure Relays

1x SPDT relay 8 A/250 VAC, resistive load, load current 10 mA–1.6 A

Horn relay

1x SPDT relay 8 A/250 VAC, resistive load, load current 10 mA–1.6 A

Opto-isolated output

30 mA, 24 VDC max, resistive load, related to CAUTION

Alarm Management

Reset Mode

Automatic or manual

Alarm Delay

0–600 s (for non ATEX mode only)

Span and Zero drift

< ± 0.5 % f.s. ± 1 digit/month

Accuracy (withoutsensor)

± 1% full scale ± 1 digit

Operating temperature

–10° C to +55° C

Storage temperature

–25° C to +60° C


Max. 90% R.H. non-condensing


10–30 Hz, amplitude 1 mm, 31–100 Hz, max. acceleration 19.6 m/s²


Back lit LCD, 4-digit, 7-segments

Optical alarms


Time-out setting

Automatic return to measurement after max. 6 minutes

Configuration and log book data

Stored in non-volatile memory


AC/DC in case of power failure

Redundant power inputs, automatic electronic switch over in case of main break down


Self-monitoring electronics

Dimensions and Weights


10 modules

5 modules

2 modules






482.6 x 132.5 x 300 mm

279.5 x 132.5 x 300 mm

157.5 x 132.5 x 300 mm

Wall Mount


1.3 kg

Dimensions (W x H x D)

255 x 180 x 90 mm

Front panel size

3 U x 8 T.E.


EN 61010:2011 (Low voltage directive)

EN 50270:2015 (EMC)

EN 60079-29-1:2007 (ATEX Perfomance)

EN 50104:2010 (Oxygen Perfomance)

EN 50271:2010 (Software)

EN 61508:2010 (SIL 2; Functional safety)


ATEX performance II (1) G (2) G

Certificate BVS 16 ATEX G 001 X

SIL 2 suitable

Certificate TÜV


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