DETECTIVE INSTRUCTION MANUAL - Sure-Safe …

1 DETECTIVEINSTRUCTION MANUALC rowcon Detection Instruments Limited Part No. M070962 Blacklands Way Issue 4 Abingdon Business Park7/03 AbingdonOxfordshire0X14 1 DYENGLANDTel: +44 (0)1235 553057 Fax: +44 (0)1235 553062M070962 Issue 47/03 CONTENTSOPERATING GUIDE3 GENERAL DESCRIPTION4 OPERATION4 Switch on4 Display4 Alarms4 Overrange4 Backlight5 Clock5 Switching off5 Linking togetherSETTING UP5 Calibration menu5 Off mode5 Display mode6 Alarm mode6 Zero6 CalibratePrint Data6 BATTERY CHARGING7 TERMINAL INTERFACE7 TROUBLE SHOOTING GUIDE9 MAINTENANCE & CALIBRATION 10 Recalibrating10 Replacing sensor module10 Replacing battery pack11 LIMITATIONS TO USE11 ACCESSORIES11 SPARES12 APPENDIX13 Data logging13 Alternative terminal interface13 Alternative sounder

2 Selection14 Leg assembly instructions14 Certification information16M070963 Issue 47/03 QUICK OPERATING GUIDETURN ONPress ON, alarm sequence will be tested, then display either the gas levels or MONITORING .ALARMA larm sounds (warbling tone) and the red LEDs flash, the hazardous gas symbol will flash orthe display will read GAS HAZARD EVACUATE AREA RESET ALARMP ress the unmarked the button with the light symbol. It will stay on for 30 minutes unless the button is BATTERYA continuous tone is OFFP ress the ON and unmarked buttons CHARGINGPlug charging lead into the socket on the backplate and then plug into mains.

3 Recharge time is6-8 DESCRIPTIONM070964 Issue 47/03 The Crowcon DETECTIVE is a transportable gas detecting unit capable of monitoring up to fourgases simultaneously, and provide warning of hazardous small area monitoring, while personnel are working a single unit can be used. For protectinga larger area a number of Detectives can be linked together, providing a protective barrieraround the work main body of the unit is made from fire retardent, high impact, UV stabilised ABS plasticand is protected against water and dust ingress to 1P66. The unit is mounted on an epoxypainted steel tripod frame which maximises stability.

4 The frame encircles the unit to add furtherprotection, therefore making it ideal for the most hostile sensors are located underneath the body of the unit for protection and a calibrationaspirator can be attached for spot sampling. The sealed lead acid batteries provide enoughcapacity for 24 hours monitoring and half an hour in alarm not in use DETECTIVE units can be conveniently stacked one on top of the other, or thelegs can be removed to minimise longer term storage space. See diagram at back of MANUAL forleg assembly SWITCH ON, press the ON button. The instrument will display a TESTING ALARM message and indicate the battery voltage.

5 If this is less than the batteries may needrecharging. The red LEDs will sequence and the sounder operate. After 5 seconds the displaywill change to display the gas is dependant on the type of sensors installed. For each sensor the display indicates thegas concentration, units of measurement and the gas green power LED will flash intermittently to reassure the user that all is the DETECTIVE detects gas above a dangerous level, the red LEDs on top of the unit flashin quick succession and the sounder emits a fast warbling noise. The channel responsible forthe alarm flashes on the display.

6 Alarms may be reset by pressing the unmarked button oncethe gas hazard has a sensor is out of range, it causes the relevant information on the display to flash, indicating ahigh gas level or a faulty sensor module. Calibration should then be can be activated to illuminate the display be pressing the button marked with the lightsymbol. It will remain on for 30 seconds unless the button is re-pressed. The backlight will beactivated automatically if a gas alarm condition is can be displayed by pressing the unmarked button. The display shows the time and theM070965 Issue 47/03elapsed time since the instrument was switched on.

7 Pressing the button again, or waiting for5 seconds returns the OFFThis is done by pressing the ON and unmarked button together, provided the off function is notdisabled. This prevents accidental switching off of the TOGETHERS everal Detectives can be connected together via the two four pin DIN sockets located on theback of the instrument. These, and the computer interface socket, are protected to ten metre long linking cable is supplied with the DETECTIVE and other lengths are available connect together, undo the cover on one of the 2 sockets, connect one end of the cable toone DETECTIVE , and the other end of the cable to the next DETECTIVE in the chain.

8 Either of thetwo sockets can be used. Detectives can be linked in a chain or a continuous one DETECTIVE goes into alarm it sends all the other Detectives into audible and visualalarm via the linking cables. The DETECTIVE which has initiated the alarm can be identified by itsown LEDs rotating at a faster speed than the others. The red alarm LED on the front panel willonly flash on the unit which has seen gas. If another unit detects gas, it too will flash its frontpanel LED and rotate its LEDs UPTo access the SET UP menu, it is necessary to know the instrument s password.

9 Unless thishas been changed by the user (see Terminal Interface), the password is 1,2,3,4 where the lefthand button is 1 and the right hand button is 4. After pressing CAL you have 5 seconds to enterthe the SET UP menu the top line displays the option whilst the lower line defines the keyfunctions of the buttons accepts the optionNO moves to the next optionQUIT returns to the previous levelThere are 6 options:OFF MODEThis enables the off to be either ENabled or DiSabled, making it impossible for unauthorisedpersonnel to switch the instrument MODEThis enables the display to be set toM070966 Issue 47/03 NORMAL: gas measuringPEAK HOLD.

10 Gas levels on display are held at peak values as soon as alarm thresholds areexceeded. Pressing the unmarked button will update the display to the current value if the alarmis : time weighted average readout on toxic channelsOFF: the display will only indicate MONITORING or GAS HAZARD EVACUATE AREA ALARM MODEThis enables the instrument to be set to acknowledge different toxic alarm sets the instrument to alarm as soon as a threshold toxic gas level is causes the instrument to ignore temporary excursions above the instantaneousthresholds, but go into alarm when the SHORT TERM or LONG TERM exposure levels ACTIVE enables both TWA and INST antaneous alarm ALLThis should only be done when the instrument is in fresh air and a steady output is successful zeroing.