Teledyne GASURVEYOR 7B-500R Operating instructions

GASURVEYOR 7B-500R - Quick Operating Instructions
CHECKLIST
1. Check the instrument has no obvious faults.
2. Check accessories.
3. Switch ON (see overleaf)
4. Check battery levels.
5. Check “ZERO” in fresh air.
SAFETY
• The instrument must be regularly serviced and calibrated by fully trained personnel in a
safe area.
• Do not use instrument in potentially hazardous atmospheres containing greater than 21%
Oxygen.
• Battery packs must be exchanged / recharged in a safe area.
• Never use a damaged battery pack.
• Only GMI replacement parts should be used.
• If the instrument detects gas, follow your own organisation’s procedures and operational
guidelines.
• The combustion chamber is a ameproof assembly and must not be opened in the
presence of a ammable atmosphere.
• Gas can be dangerous and care should always be taken in its use.
• ‘Gasurveyor 7B-500R’ instruments are certied as:
EEx iad IIC T4 -20°C ≤ Tamb ≤ 50°C (-4°F ≤ Tamb ≤ 122°F)
BAS01ATEX2292 II 2 G. UL 913 Class 1 Groups A, B, C and D.
• This equipment is designed and manufactured to protect against other hazards as dened
in paragraph 1.2.7 of Annex II of the ATEX Directive 94/9/EC
• Any right of claim relating to product liability or consequential damage to any third party
against GMI is removed if the safety warnings are not observed.
AREAS OF USE
Exposure to certain chemicals can result in a loss of sensitivity of the ammable sensor.
Where such environments are known or suspected it is recommended that more frequent
response checks are carried out. The chemical compounds that can cause loss of sensitivity
include Silicones, Lead, Halogens and Sulphur.
The enclosure material is polypropylene and must not be exposed to environments, which
are liable to result in mechanical or thermal degradation or in damage caused by contact
with aggressive substances. Additional protection may be required in environments where
the instrument enclosure is liable to be damaged.
OPERATOR MESSAGES / FAULT FLAGS
Various messages can appear on the LCD screen to indicate instrument status.
‘SAMPLE’ This indicates that the pump is running and the instrument is sampling.
‘SAMPLE’ (Flashing) This indicates that the pump is running at the maximum possible
speed (dependent on battery condition).
‘EEEE’ or ‘EEE’ This message is displayed when the ‘PPM’ or ‘Vol Gas’ reading exceeds
limits.
‘OFF’ This indicates that the instrument is about to switch OFF. This command can be
cancelled by a single press of any button.
‘SAMPLE FAULT’ This indicates a problem with the instrument’s ow due to the sample
path being blocked, water ingress, a blocked lter or pump failure. The instrument will alarm
and the pump will switch OFF (not in CSM mode). The sample path should be checked and
‘Button 1’ pressed to clear sample fault and re-start the pump.
‘CHECK ZERO’ This indicates that there may have been a zero shift due to the presence of
gas. Switch OFF the instrument and switch ON again in fresh air.
‘ZERO FAULT’ This indicates that the zero is outwith its calibration limits. Switch the
instrument OFF and then ON again in fresh air. If the fault does not clear, return the
instrument for servicing.
‘BAT’ This indicates that the battery pack will soon require replacement / recharged. At this
point there will be approximately 30 minutes operation remaining, although this gure will
vary depending on, temperature conditions, usage etc.
‘BAT FAULT’ This indicates that the battery pack should be replaced / recharged
immediately. As the battery power continues to fall, the pump switches OFF and the LCD
ashes a ‘BAT FAULT’ message. Subsequently the LCD displays ‘OFF’ and the instrument
switches off after approximately 5 minutes. The battery pack should be replaced / recharged
immediately.
‘1 FAULT’ This message can appear after power on, indicating that a calibration data error
has been detected. The instrument should be returned for servicing.
Document Part Number: 42309 Issue 4 (18/02/2021)

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GASURVEYOR 7B-500R - Quick Operating Instructions
Button Operation
Switch ON (Mode)
CGI: Press and hold ‘Button 1’
(COMBUSTIBLE GAS INDICATOR)
CSM: Press and hold ‘Button 2’
(CONFINED SPACE MONITOR)
This also switches the pump ON and initiates
the instrument’s warm-up cycle with all LCD
segments displayed. This is followed by Instrument
Type (7) and Software version (1-4), then Battery
status, ‘OK’ (or ‘LO’) - not illustrated.
Next, any alarm levels set are displayed - not illustrated.
Next, the instrument indicates, as day and
month, when the next calibration is due.
(e.g. 26th Dec.)
Note: If overdue, the instrument
automatically switches OFF.
The ‘service due’ screen, not illustrated, is only displayed (as day : month) when the
instrument is within one month of service expiry date. Note: If overdue, the instrument
automatically switches OFF.
Finally, the current gas detection reading
is displayed. (LEL range in example).
Switch OFF
A double press of ‘Button 1’ switches the instrument OFF. There is a ve second shutdown
sequence during which time, OFF is displayed. To abort shutdown, press either button.
Pump Operation
CGI: Each single press of ‘Button 1’ switches the pump OFF / ON.
In PPM range, each single press of ‘Button 1’ switches the pump to
FAST / OFF / ON / FAST.
CSM: Pump runs continuously in this mode.
Document Part Number: 42309 Issue 4 (18/02/2021)
Change Range:
Each single press of ‘Button 2’ changes the range. The display cycles
through the available ranges in the following order:
CGI mode: LEL / Vol GAS - O2 - CO - PPM
CSM mode: LEL / Vol GAS - O2 - CO
Note: The instrument auto-ranges between LEL and Volume Gas in both CGI and CSM
modes.
Zero PPM Gas Range:
The PPM range can be zeroed by using a double press of ‘Button 2’ .
This action should only be carried out in fresh air.
Alarms:
CGI: If displaying PPM, LEL / Vol Gas, and O2
or CO alarm is activated, the range window
will briey indicate the alarming range. The red
visual alarm will also ash. CGI alarms are Non-
Latching.
Geiger: When the PPM (ammable) range is selected, press and hold ‘Button 2’ to
enable the audible ‘geiger’ style alarm.
CSM: When an alarm is activated, instrument will automatically display the range in alarm
condition. A press and hold of ‘Button 2’ will acknowledge the alarm (for 60 seconds)
and return to previously displayed range. CSM alarms are Non-Latching.
Condence Signal (CSM mode only):
The audible and visual condence signal activates every 8 seconds in this mode.
Manual Log - pump must be ON:
A press and hold of ‘Button 1’ stores current gas readings (except PPM). ‘STORE’ is
indicated on display and instrument ‘beeps’. Automatic datalogging of all ranges (except
PPM) occurs in CSM mode every 60 seconds, with ‘STORE’ displayed at all times.