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Product Features

Rugged design
Fixed or folding legs
Infrared sensors available
Top mount for ease of view with dual colour backlight (green/red)
Up to 125-hour battery life
Optional internal pump
IP65 specifications
Direct connection to multi-regional power supply

Delivery options

At Cadmus Products, we prioritise eﬃcient order delivery and oﬀer competitive shipping rates worldwide. Our streamlined process ensures clarity and reliability for all your shipping requirements.

We handle consignments of various sizes across the UK and globally, primarily using DHL, but may select other couriers for specific needs.

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Crowcon Detective+ Portable Gas Monitor

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SKU

CrowconDetective+

Details

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

Product 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, 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