Crowcon Detective+ Portable Gas Monitor
Product Features
The Crowcon Detective+ Portable Gas Monitor is a rugged, water and impact-resistant multi-gas monitor for temporary areas. Ideal for use in turnaround/shutdown procedures, hot work maintenance, confined space entry work and many other utility, construction and oil and gas industry applications.
The Detective+ features a robust and adaptable design with either fixed or folding legs and a protective frame, perfect for when temporary spaces or areas where fixed detectors are impractical.
Available with an optional internal pump for sampling versatility, alarms are announced with an extremely loud sounder, while multiple beacons ensure 360-degree visibility.
The Detective+ can also be equipped with infrared (IR) sensors, providing higher levels of flammable gas monitoring and carbon dioxide detection. IR sensors also provide immunity to the poisoning effects, which standard flammable gas sensors can be prone to. This extends sensor life and further increases measurement confidence in tough applications, such as water treatment plants and certain chemical or hydrocarbon processing facilities.
The Detective+ can be adapted to use a variety of gas sensors, including hydrogen, to monitor a wide range of gases according to the needs of your space, optimising safety and security.
Versatile and User Friendly:
▪ Ultra-reliable infrared sensors available for sampling of highly flammable gas levels and carbon dioxide, free from risk of sensor poisoning
▪ Built-in pump option for enhanced sampling versatility
▪ Clear, fuss-free digital display for quick identification of gas hazard
Rugged Tripod Design:
▪ Triple leg design allowing the detector to stand anywhere it’s needed▪ Raised design increases unit physical visibility and perfectly allows 360° gas inlet while preventing water ingress
▪ Folding leg option allows stacking for easier storage
▪ Made to IP65 specifications, making it suitable for use in challenging environments
Versatile Alarm Functions:
▪ Loud and clear alarms with vivid red LED visuals, so you can act quickly to secure your site
▪ Up to 12 Detective+ devices can be networked together through cabling, to form effective perimeter defence
▪ Units on the network can be placed up to 100m from each other and if one alarms, all units on the network signal simultaneously
| Size | 640 x 455 x 455mm (25.2 x 17.9 x 17.9ins) |
| Weight | 7.5kg (19lbs) |
| Alarms | Three large, top mounted red LED clusters and a single red LED on front panel. Alarm mode: LED clusters flash in quick succession. LED clusters of linked Detectives repeating the alarm, flash slower than LED lights on those Detectives sensing the hazard Normal working: Slow flashing green LED Battery low: Rapid flashing green LED Wailing alarm, omni-direction siren, 104 dBA at 1m |
| Display | High contrast LCD with back light. Values and units for up to 4 gases displayed simultaneously at current, TWA or peak levels, low battery, real time and elapsed time calibration and configuration data also displayed. |
| Data logging | 125hrs at 10-second intervals (45,000 logs) |
| Event logging | Alarm, over range, calibration, bump, on/off, TWA, 1000 events |
| Battery | Standard 6V, 7.2Ah, sealed lead acid battery pack Optional 6V, 12Ah high capacity pack Up to 36 hours with flammable/ CO2 sensor fitted with 7.2Ah battery Up to 60 hours with optional 12Ah battery pack |
| Typical response times | Methane 20s, oxygen 10s, typical toxic gas 20s, IR 20s |
| Operating temperature | -20°C to +50°C (-4°F to 122°F)* |
| Expected sensor life | Flammable 5 years, toxic 3 years (typical), oxygen 2 years minimum, IR>5 years |
| Humidity | 15-95% RH non-condensing |
| EMC | Directive 2014/30/EU EN50270 |
| Ingress protection | IP65 |
| Approvals | Europe: ATEX II 2G Ex ib d IIC T4 (Tamb -20°C to +50°C) International: IECEx Ex ib d IIC T4 (Tamb -20°C to +50°C) |
| Standards | EN50014, EN50018, EN50020, EN50104, EN45544, IEC60079-0/-1 IEC60079-11 |
| PC Interface | Via RS232 lead. Portables PC software can be used to set alarms, clock, datalogging interval and password, manages datalogging giving graphical display of instrument log file and allows to export to spreadsheet. |
| Calibration | Quick calibration using internal menu command, Portables PC |
| Accessories | Baffle plate, interconnecting leads, RS232 communications lead, Detective NET |
| Sampling | Internal electric sampling pump option, manual aspiration |
| Linked Detectives | With cable connection, up to 12 units can be linked to provide perimeter or area monitoring |
| Crowcon Connect Compatible? | No |
**Toxic and Oxygen sensors RH Specifications vary, consult Crowcon for specific operating humidities.
Gasses and Ranges
| Gas | Range | Typical Alarms |
| Flammable gas | 0-100 LEL | 20% LEL |
| Oxygen (O2) | 0-25% | 19% & 23% |
| Hydrogen sulphide (H2S) | 0-50 ppm | 10 ppm |
| Carbon monoxide (CO) | 0-500 ppm | 30 ppm |
| Sulphur dioxide (SO2) | 0-10 ppm | 2 ppm |
| Chlorine (Cl2) | 0-5 ppm | 0.5 ppm |
| Nitrogen dioxide (NO2) | 0-10 ppm | 2 ppm |
| Phosphine (PH3) | 0-5 ppm | 0.5 ppm |
| Ammonia (NH3) | 0-50 ppm | 25 ppm |
| Ammonia (NH3) | 0-1000 ppm | n/a |
| Hydrogen (non-flammable levels) | 0-2000 ppm | n/a |
| Hydrogen cyanide (HCN) | 0-25ppm | 10ppm |
| Hydrogen chloride (HCl)*/+ | 0-10 ppm | 5ppm |
| Chlorine dioxide (ClO2)+ | 0-1 ppm | 0.1 ppm |
| Hydrogen fluoride (HF)+ | 0-10 ppm | 1 ppm |
| Ethylene oxide (C2H4O)* | 0-10 ppm | 5 ppm |
| Volatile organic*/+ | 1-100 ppm | n/a |
* One biased sensor per Detective+
+ Reactive gas, care required during sampling, contact Crowcon
for details.
Infrared Sensors
| Gas | Range | Typical Alarms |
| Flammable gas | 0-100 LEL | 20% LEL |
| Flammable gas | 0-100% v/v | None |
| Available for methane, propane, butane or ethylene | ||
| Carbon dioxide (CO2) | 0 to 5% v/v | 0.5 and 1.5% v/v |
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