Overview
Rugged and robust, Detective+ features either fixed or folding legs and a protective frame that allows stacking for easier storage.
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. Detective+ can be specified with a wide range of sensors, including hydrogen, to monitor a wide range of gases which pose a variety of threats.
Versatile and user friendly
- Infrared Sensors Available – allows sampling of highly flammable gas levels and carbon dioxide. They are also unaffected by poisoning and have a very fast response time.
- Built-In Pump Option – provides sampling versatility
- Built-In Display – provides clear information and allows identification of gas hazard
Rugged, tripod design
- Raised Sensor Apertures – prevents water ingress
- Folding Leg Option – allows stacking for easier storage and transportation
- IP65 Specifications – for use in challenging environments
- Triple Leg Design – Increases unit physical visibility and is the perfect height to allow 360 gas inlet
Loud and clear alarms
- 12 Detective+ With Cables Can Be Networked Together Forming 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 alarm.
- Intelligent And Flexible Units Sending An Alarm Flash Faster – provides guarantee to the use that the unit is functioning properly and they are protected
- Audible And Visual Confidence Blip
- Vivid Red LED Clusters for visual alarm
- Multiple Beacons – ensures 3600 visibility
Specifications
| 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 |
| 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.
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 | 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
Infrared (IR) sensors for flammable gas can be supplied as a single range, 0-100% LEL, utilising 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 |
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