EC-600 carbon monoxide monitor, 0-150 ppm, battery operated (2 AA batteries) with 3 meter sensor cable installed


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RKI’s Model EC-600 is an indoor monitor that detects Carbon Monoxide (CO) with a range of 0-150 ppm. It’s a sleek low profile design which lends itself to laboratory or commercial applications. The EC-600 comes ready to operate with a simple wall mount bracket and 10 foot power cord. If Carbon Monoxide is present, the user is notified by an audible alarm tone and multicolored LED display.

The EC-600 uses a fast responding low-cost plug-in style electrochemical sensor. This long life sensor is field-replaceable with no special tools required.
  • Compact, wall mounting design
  • Highly visible 3 color LED digital display
  • Power cable can enter from any direction
  • Stores alarm summary data
  • Built in audible and visual alarms
  • 115 VAC operation
  • Relay outputs for annunciation of alarms
  • Low cost plugin electrochemical sensor
  • Iron and steel industry
  • Laboratories
  • Boiler rooms
  • Garages
  • Vehicle service areas
  • Engine testing
  • Shipping / receiving docks
  • Multi-occupancy residences
Detection PrincipleElectrochemical
Gas DetectedCarbon monoxide (CO)
Detection Range0 ~ 150 ppm (1ppm / digit)
Display Resolution1 ppm
Sampling MethodDiffusion or remote sampling method with optional sensor extender cable
Indication Accuracy (under normal conditions)+ / - 5% of reading or + / - 2% full scale (whichever is greater)
Response Time (under normal conditions)90% Response within 30 seconds (T90)
Alarm LevelsTwo preset alarms (L-H)
Alarm 150 ppm
Alarm 2100 ppm (other settings available)
Display of Alarm1st gas alarmGas concentration reading blinks, flashing AL 1 icon, orange back light, buzzer
2nd gas alarmGas concentration reading blinks, flashing AL 2 icon, red back light, buzzer
Alarm LogicLatching or Non-latching (including trouble alarm)
Alarm ContactDry contact, normally open or normally closed (default setting is normally open)
DisplayDigital LCD (3 digits, 7 segments / Green, Orange, Red) (For Alkaline battery version, the back light will be OFF during normal operation)
Trouble Alarm / Self-DiagnosisSystem trouble / sensor connection trouble
Display of Trouble AlarmBuzzer / flashing of red error message
Relay Contact Rating125VAC, 1A or 30VDC, 1A (Resistive load)
ApprovalsCE marking standard. CSA approval optional (No power cord supplied with AC CSA version)
Output Signal4 ~ 20mA (Non-isolated, Resistive load under 300Ω) or 0 - 1VDC (Non-isolated)
*only for 0 - 1VDC Alkaline battery specification
Extender Cable (optional)Extender cable with remote box (3 m, 5 m, 10 m, & 20 m lengths available)
Power Sources(120VAC±10%, 50/60Hz,) 24VDC±10%, or AA alkaline battery (2 each)
Power ConsumptionAC specificationMAX 3.5VA
DC specificationMAX 2W
Continuous Operation1 year (no alarm, no indication for alkaline battery version)
Operating Temperature0 ~ 104°F (-17 ~ 40°C)
Operating Humidity0 - 90% RH (non-condensing)
Mounting EquipmentWall mounting type (by using accessory mounting plate or mount at one switch box)
Cable inletUp, down and left/right, or rear side
DimensionBodyApprox. 3.15”(W) x 4.72”(H) x 1.2”(D) (80(W) x 120(H) x 35.5(D)mm)
WeightAC specificationApprox. 7.05 oz (200g)
DC specificationApprox. 6.34 oz (180g)
Alkaline battery specificationApprox. 8.11 oz (230g)
WarrantyOne year materials and workmanship

Additional information

Weight 0.93 lbs
Dimensions 1.38 × 3.74 × 5.31 in