Portable Gas Detectors Detective+

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Portable Gas Detectors Detective+
Portable Gas Detectors Detective+

Portable Gas Detectors detective+ 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.

Detective+
Detective+

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.

Gas Detectors Detective+
Gas Detectors Detective+

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

  • 25 Detective NET units or 12 Detective+ with cables can be networked together forming effective perimeter defense – 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, 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.

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, 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

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