RKI Instruments
RKI Carbon Monoxide (CO), 0-300 ppm, for Fixed & Sample-Draw Systems Plug-In Replacement Sensor
- SKU:
- ES-1531-CO
Description
The RKI ES-1531-CO is a genuine RKI Carbon Monoxide (CO) replacement sensor designed for compatible RKI fixed and sample-draw gas detection systems. It provides a measurement range of 0–300 ppm CO.
The ES-1531-CO uses an amperometric 3-electrode electrochemical sensing principle and features a convenient CT-7 style plug-in design for field replacement. RKI specifies this sensor for numerous fixed-system configurations, including Direct Connect, S2, S-Series, M2/M2A, M2A-XL, M-Series and compatible 35-3001 sample-draw systems.
RKI documentation also identifies this exact sensor as the replacement sensing element for multiple CO detector and transmitter assemblies, including the 65-2438, 65-2433RK-05, 65-2496RK and 65-2499RK detector configurations.
Important: RKI manufactures several CO sensors with different ranges, temperature ratings and instrument compatibility. Always verify the complete sensor part number before ordering.
For assistance confirming the correct replacement sensor for your RKI gas detection system, contact CPS Calibrations at 865-900-8844 or info@cpscalibrations.com.
- Genuine RKI Instruments replacement sensor
- Carbon Monoxide (CO) detection
- Measurement range: 0–300 ppm
- Amperometric 3-electrode electrochemical technology
- CT-7 style plug-in design
- cCSAus version
- Fast warm-up time
- Good zero stability
- Quick response time
- T90 response time under 35 seconds
- Expected sensor life: 2–3 years
- 1-year sensor warranty
- Designed for compatible RKI fixed and sample-draw systems
- RKI part number ES-1531-CO
| Manufacturer | RKI Instruments |
| Part Number | ES-1531-CO |
| Target Gas | Carbon Monoxide (CO) |
| Detection Range | 0–300 ppm |
| Sensing Principle | Amperometric 3-Electrode Electrochemical |
| Sensor Style | CT-7 Style Plug-In |
| Accuracy | ±10% of Reading or ±5% of Full Scale, Whichever Is Greater |
| Repeatability | ±5% of Reading |
| Resolution | 1% of Full Scale |
| Response Time | T90 <35 Seconds |
| Operating Temperature | -5°C to +40°C |
| Humidity | 0–99% RH, Non-Condensing |
| Expected Sensor Life | 2–3 Years |
| Warranty | 1 Year |
| Certification Version | cCSAus |
RKI documentation identifies the ES-1531-CO for use with the following systems and detector assemblies:
- RKI Direct Connect Fixed Systems – compatible CO configurations
- RKI S2 Series – non-explosion-proof CO configurations
- RKI S-Series – compatible CO configurations
- RKI M2 – compatible CO configurations
- RKI M2A – compatible CO configurations
- RKI M2A-XL – compatible CO configurations
- RKI M-Series – compatible CO configurations
- RKI 35-3001 Series – compatible CO sample-draw configurations
- RKI 65-2438 – CO detector assembly
- RKI 65-2433RK-05 – CO detector assembly
- RKI 65-2496RK – CO detector assembly
- RKI 65-2499RK – CO detector configuration
- RKI 65-2336RKSS – CO transmitter
- RKI 65-2481RK Multi-Point Detector – CO configuration
RKI's M2A documentation specifically identifies the ES-1531-CO as the plug-in CO sensor used with the 65-2438, 65-2438-01 and 65-2496RK detectors.
Important: Do not confuse this sensor with the ES-1531-CO-S, which RKI lists separately as a 4-pin CO sensor with an extended -40°C to +50°C temperature range.
Always verify the complete sensor part number and detector/transmitter configuration before ordering.
Need help confirming compatibility? Contact CPS Calibrations at 865-900-8844 or info@cpscalibrations.com.