Nanjing Kelisaike Safety Equipment Co., Ltd.
                                                                                                           
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22 Years
Since 2004
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CO Fixed Gas Detector with 4-20mA Output for Industrial Use

Price Negotiable
Price: USD 260-580/PC
MOQ: 1PC
Delivery Time: 15-20 working days
Brand: Kelisaike
Product Description
K500 Series Fixed Explosion Proof Gas Detector
The K500 series wall-mounted gas detector features imported high sensitivity sensors and explosion-proof design for long service life. This detector operates as part of an integrated system with 4-20 mA analog output or as an independent unit, featuring two alarm levels with distinct audible and visual signals.
K500 Series Fixed Gas Detector
Key Features
  • Imported high sensitivity sensors for accurate detection
  • Bright red flashing visual alarm and 90 dB audible alarm
  • Waterproof and dustproof design for harsh environments
  • Compatible with Distributed Control System (DCS)
  • Flameproof design compliant with IEC61508 standards
  • Adjustable low and high alarm values
  • 220 V AC or 24 V DC power supply options
  • Certifications: CMC, Ex, MA (China coal mining safety approval)
Technical Specifications
ParameterSpecification
Power Supply24 V DC or AC 220 V/50 Hz
Output Signal4-20 mA standard industrial signal
Operating Temperature-20°C to +50°C
DisplayBacklight LED, 4-digit gas reading
Relative Humidity15% to 90% RH (non-condensing)
Atmospheric Pressure86 to 106 kPa
Explosion-proof GradeEx ibd IIC T6
Size16 cm x 12.6 cm x 7.8 cm
Weight3000 g
Distance1000 m
Connecting Cable3 core cable, 3 x 1.0 mm
Commonly Detected Gases
Gas Range Accuracy Response Time Min Readout Low/High Alarm
PH30-2000 ppm±5% F.S.≤25s0.01 ppm0.3/5 ppm
O20-30%±5% F.S.≤15s0.1% vol18.0%/23.0%
LPG0-100% LEL±5% F.S.≤5s1% LEL25.0%/50.0% LEL
CO0-1000 ppm±5% F.S.≤25s1 ppm50/100 ppm
H2S0-100 ppm±5% F.S.≤30s1 ppm10/20 ppm
CH40-100% LEL±5% F.S.≤5s1% LEL25.0%/50.0% LEL
NH30-100 ppm±5% F.S.≤50s1 ppm25/50 ppm
O30-20 ppm±5% F.S.≤60s0.01 ppm0.2/0.4 ppm
Cl20-20 ppm±5% F.S.≤30s0.1 ppm1/10 ppm
H20-1000 ppm±5% F.S.≤60s1 ppm50/100 ppm
SO20-100 ppm±5% F.S.≤30s0.1 ppm2/10 ppm
NO0-250 ppm±5% F.S.≤60s1 ppm25/50 ppm
NO20-20 ppm±5% F.S.≤25s0.1 ppm3/10 ppm
Infrared CO20-5% vol±5% F.S.≤60s0.1% vol1%/2% vol
Infrared CH40-5% vol±5% F.S.≤60s0.1% vol0.1%/0.15% vol
Infrared C3H80-5% vol±5% F.S.≤60s0.1% vol0.1%/0.15% vol
Gas detector installation example Gas detector close-up view Gas detector technical details
Our Service
  • 1-year warranty with lifelong maintenance
  • 24-hour response to all inquiries
  • Technical support from experienced engineers
  • OEM and ODM services available
  • Factory located in Nanjing - visits welcome
  • Full quality check and qualification certificate with every shipment
Calibration Services
For calibration of KELISAIKE products, please contact our technical support team for assistance.
Why Choose KELISAIKE?
  • Direct manufacturer pricing with favorable rates
  • Professional engineering team with over 10 years experience
  • Strong R&D team for custom product development
  • Free OEM services including logo printing and custom packaging
  • Mixed orders and small quantity orders accepted
  • Comprehensive after-sales service with 1-year warranty
Frequently Asked Questions
Q: Are you a manufacturer?
A: Yes, we are professional safety equipment manufacturers with over 12 years of experience in production and marketing.
Q: Do you provide customization?
A: Absolutely. We customize gas type, detection range, alarm points, and other specifications. Contact us with your requirements.
Q: Can I order a sample for quality testing?
A: Yes, we recommend testing samples before placing larger orders.
Q: What pricing is available for large quantity orders?
A: Please provide detailed requirements including item numbers, quantities, quality specifications, and delivery terms for an accurate quotation.

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Nanjing Kelisaike Safety Equipment Co., Ltd.
Location Bldg 12, 2 Qingshuiting West Road, Nanjing, Jiangsu, China, 211102
Contact Person Lisa

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