Detective+ Transportable Multigas Temporary Area Monitor
Designed for group protection, area monitoring and providing a virtual fenceline, Detective+ is a rugged, interconnectable, multigas temporary area monitor.
Building on Crowcon’s experience in pioneering this category of detector, Detective+ has earned a reputation for reliability and versatility in demanding environments stretching from offshore platforms to the sands of the Middle East.
Rugged and robust, Detective+ features either fixed or folding legs and a protective frame that allows stacking for easier storage.
New! Detective+ is now wireless.
Detective Wireless is a wireless module that gives you up to 100 meters range excluding the use of cables.
The Detective Wireless modules can also be used as a repeater giving you a stronger signal in those areas that are built up and that have issues with signal strength.
Detective Wireless is backwards compatible enabling use with all version of Detective and Detective+, so it can be used on your existing fleet.
Available with an optional internal pump for sampling versatility, alarms are announced with an extremely loud sounder, while multiple beacons ensure 360 degree visibility.
Detective+ may now also be equipped with infra-red (IR) sensors, providing either CO2 detection, or allowing higher levels of flammable gas monitoring. IR sensors also provide immunity to the poisoning effects which standard flammable gas sensors can suffer from. This extends sensor life and further increases measurement confidence in tough applications such as water treatment plants and certain chemical or hydrocarbon processing facilities.
Versatile and user friendly
- Infrared sensors available – allows sampling of highly flammable gas levels and carbon dioxide. They are also unaffected by poisoning
- Built-in pump option – provides fast response and extra sensor protection, and sampling versatility
- Clear display – provides clear information and allows indentification of gas hazard
Rugged, tripod design
- Raised sensor apertures – prevents water ingress
- Folding or fixed leg options – allows stacking for easier storage and transportation
- IP65 specifications – provides excellent sensor protection
Loud and clear alarms
- 25 Detective+ units may be linked together, up to 100m from adjacent units – all linked Detective+ units indicate an alarm sensed by any one unit
- Units sending an alarm flash faster – provides effective warning of gas hazards
- Audible and visual confidence blip
- Vivid red LED clusters for visual alarm
- Multiple beacons – ensures 3600 visibility
| 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 control 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. |
| Battery | 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, oxygen 2 years minimum, IR>5 years |
| Humidity | 0-95% RH non-condensing |
| EMC | EN 50270, FCC CFR47 Part 15 |
| Ingress protection | IP65 |
| Approvals | Europe: ATEX II 2G EEx ib d IIC T4 International: IECEx EEx ib d IIC T4 |
| 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 or the Crowcon CheckBox IMH management system |
| Accessories | Baffle plate, interconnecting leads, RS232 communications lead |
| Sampling | Internal electric sampling pump option, manual aspiration |
| Linked Detectives | Up to 12 units can be linked to provide perimeter or area monitoring |
Gases and Ranges
Required ranges and alarms may vary by country and application and these can be configured as required.
| 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 | 35 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 (HN3) | 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
Infrared (IR) sensors for flammable gas can be supplied as a single range, 0-100% LEL, utlising a single display channel, or as a dual range, 0-100% LEL/0-100% volume, which then occupies two display channels.
Carbon dioxide sensors are supplied as 0-5% volume. Only one IR sensor can be fitted, and IR sensors can only be used in combination with oxygen and toxic 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 |