Carbon Monoxide Monitor

  • Standalone compact Carbon Monoxide Monitor Standalone compact Carbon Monoxide Monitor
  • Riken EC-600 Remote Sensor Riken EC-600 Remote Sensor
EC-600 at a glance

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Carbon Monoxide ( CO)  Monitor:

The Riken Keiki EC-600 is an indoor stand-alone Carbon Monoxide monitor.

Carbon Monoxide (CO) is a poisonous gas. Carbon Monoxide is produced by the incomplete burning of fossil fuels.

Modern industrial cooking equipment as well as industrial boiler rooms use Natural Gas. CO is produced in these environments and as it is undetectable,  people  may not realise they are being exposed. Exposure to Carbon Monoxide is often fatal.

The use of  Carbon Monoxide Monitors are very important in these situations.

Visual and Audible CO Alarms:

The EC-600 displays CO levels on an LCD screen that changes colour at each alarm level. This is unique to the Riken Keiki  600 series. EC-600 has a loud  internal alarm (85db ) sounder.

The Unit comes with  preset alarms set to High and High High. Users can program their own alarm levels if desired.  Users can access relay outputs for 1st and 2nd alarms in addition to a 4-20mA output. These features allow customers to connect optional accessories such as such as additional sounders and beacons.

The Instrument comes complete with a 24 VDC Power supply in addition there is a  battery version.  An optional 240VAC Mains adapter is also available.

Sensor Technologies :

The EC-600 has an Electro-Chemical CO sensor, in addition users can replace the sensor in the field without the need for special tools.

The EC-600 comes with a measurement range of 0-150ppm.

Remote Carbon Monoxide  ( CO ) Sensor:

An extender cable allows the unit to be mounted outside the room with the sensor inside. This allows staff to ascertain the state of the room prior to entry thus staying safe.

Optional extras that include a Battery backed UPS ( WPSU-24 Series) in addition to sounder beacon(s) (SB-100 ) are available.

The EC-600 is a member of the 600 series of standalone monitors in addition this family includes OX-600, RI-600 and GM-600



  • Operates with or without a controller
  • 2 x Relay contacts plus a 4 -20mA output are available
  • Tri-colour visual alarm display : Green = Normal, Yellow = Alarm 1, Red = Alarm 2.
  • Large easy to read digital display
  • Long life reliable and easy to replace sensor.
  • Remote sensor cable options available ( 3 , 5 , 10 and 20 Meters)
  • Ultra compact wall mounted design
  • 24VDC ( optional 240VAC mains adapter available ) or battery options
  • Laboratories
  • Industrial Kitchens
  • Boiler Rooms
  • Cryogenic storage facilities
  • Clean rooms
  • Gas Storage rooms
  • Iron and steel industry
  • Garages
  • Vehicle service areas
  • Engine testing
Model Name EC-600
Detection Principle Electro-Chemical
Gas Detected Carbon Monoxide ( CO )
Detection Range 0~150ppm
Display Resolution 1ppm
Sampling Method Diffusion or remote sampling method with optional extender cable
Functions Measuring Gas Concentration, Measuring Unit , Battery Level ( Alkaline battery type only )
Remote cable 3m/5m/10m/20m
Alarm Levels Two preset alarms (H-HH), alarm 1 = 50ppm, alarm 2 = 100ppm (other settings available)
Display of Alarm 1st gas alarm: gas concentration reading blinks or orange light, flashing AL1 light or orange light, buzzer
2nd gas alarm: gas concentration reading blinks or red light, flashing AL2 light or red light, buzzer
Alarm Method Latching or Non-latching
Alarm Contact Dry contact, Form A or Form B, Form A standard Factory Setting, normally open (closed in ALARM)
Display Digital LCD (3 digits, 7 segments / Green, Orange, Red) (For Alkaline battery version, the back light will be OFF during normal operation)
Trouble Alarm / Self-Diagnosis System trouble / sensor connection trouble
Display of Trouble Alarm Buzzer / content indication (flashing of red error message)
Trouble Alarm Method Non-latching or Latching
Contact Capacity 125VAC, 1A or 30VDC, 1A (Resistive load)
Output Signal 4 ~ 20mA (Non-isolated, Resistive load under 300O) or 0DC-1V (Non-isolated) *only for 0DC-1V Alkaline battery specification
Remote Extender Cable Extender cable with remote sensor head (3m, 5m, 10m or 20m lengths available)
(cable used: EM-MEES (o.5sq), 2-core)
Power Sources 24VDC±10%, or AA alkaline battery (2 each)
Power Consumption 24VDC specification: MAX 3W
Continuous Operation (for Alkaline Battery version) 1 year (no alarm, no indication)
Initial Clear About 25 seconds
Operating Temperature -10°C ~ 40°C (no sudden change)
Operating Humidity Below 90%RH (non-condensing)
Mounting Equipment Wall mounting, sensor integrate type or remote type
Dimension Body: approx. 80mm(W) x 120mm(H) x 35.5mm(D) / 3.15”(W) x 4.72”(H) x 1.2”(D)
Remote sensor (exclude the protrusion): approx. 40mm(W) x 96mm(H) x 35.5mm(D) / 1.57”(W) x 3.78”(H) x 1.2”(D)
Weight 24VDC specification: approx. 180g (6.34 oz), Alkaline battery specification: approx. 230g (8.11 oz) Remote sensor: approx. 55g (1.94 oz) (excluding cable)
*Under normal conditions