Operator`s manual

Page 6
SPECIFICATIONS
DETECTOR: Multi-Gas with advanced microcontroller based operation
Power: Rechargeable NiCad battery: Operation -12 hrs. ; Charge time - 3 hrs.
Temp. Range: -20 to +50°C (-4 to +122°F)
Humidity: 5 to 95 % RH non-condensing
Self Test: Automatic when the BW DEFENDER is turned on
Records/Displays: 1. TWA (Time Weighted Average) Exposure
2. Peak Exposures
Calibration: Automatic Zero and Span
Security: Password protection for calibration and alarm setpoints
SENSORS: Combustible: Plug-in catalytic bead
Toxics and Oxygen: Plug-in 2 year electrochemical cells
DISPLAY: Four (4) extra-large gas specific alpha-numeric LCDs
Alarm Setpoints: Displayed each time the unit is turned on
Backlight: Pushbutton; Automatic in Alarm
ALARMS: Audible: 90 dB @ 0.3 m (1 ft. ) variable pulsed beeper
Visuals: 1. Two (2) flashing “sunbright” LEDs
2. Gas specific LCD flashes in alarm
Levels: Two setpoints per sensor (user adjustable):
TOXICS: Low & High (TWA, STEL)
OXYGEN: Deficiency (High) & Enrichment (Low)
COMBUSTIBLES: Low & High
Other Alarms: Multiple Gas Exposure; Sensor Removed; Calibration Air; Low Battery
Size: 11.9 x 10.3 x 2.9 cm (4.7 x 4.04 x 1.13 in.)
(with Pump) 15.2 x 10.3 x 2.9 cm (6 x 4.04 x 1.13 in.)
Weight: 375 g (13.27 oz.) including battery
424 g (14.85 oz.) including Pump & battery
Enclosure: Rugged, composite material, RFI/EMI shielded
SAMPLING PUMP: Powered by BW DEFENDER
Switch: Activates Active Sampling or Diffusion Mode operation
Active Mode: Fan ICON indicator
Low Flow: Activates Alarms (both Audible and Visual)
Flowrate: 300-350 ml/min with 3 m (10 ft.) hose and filters (dependent on pump)
Input Pressure: 1.25 kPa
Water Trap (built-in): Hydrophobic Teflon replaceable filter
Current Draw: 75 mA
Battery Life: Expected 8 hours (NiCad)
SAMPLE HOSES: Tygon hose equipped with particulate filter and quick connect
Length: Standard 3 m (10 ft.); maximum length 15 m (50 ft.)
SAMPLE PROBES: 0.3, 0.9 or 1.8 m (1, 3 or 6 ft.) polycarbonate probes with handle and quick
connect
Fig.1: BW DEFENDER FEATURE DRAWING
A
Low & High Alarm
Setpoints Display each
time the unit is turned
ON
B Black & Decker
“VersaPak”
rechargeable battery
with locking switch
C Dual Mode Sampling
Pump
D “Sunbright” Flashing
Alarm LEDs
E Audible Alarm
F One Button Operation
G Keypad to set Alarm
Levels and Enter
Password
H Stores TWA and Peak
functions
This manual covers the following BW DEFENDER instruments: Note: The models
listed below contain the new BW Defender 2 year oxygen sensor.
Order No.
Description
D4-2002
4-gas Detector
D4-2002
-SP 4-gas Detector (motorized Sampling Pump installed)
D2-2002
2-gas Detector
Note: To include 110 VAC charger add no suffix. To exclude charger add suffix: “-A”.
To include 230 VAC charger add suffix: “-UK” - UK/Ireland plug; “-EU” Continental European plug.
Table 1: BW DEFENDER GAS DETECTORS
Gas Monitored
Gas Bar
Symbol
Unit of Measure
BW Defender
Version
Oxygen O
2
% of ambient air
4-gas
2-gas
Explosive Gases EX % of lower explosive limit (LEL)
Carbon Monoxide CO Parts-per-million (ppm)
Hydrogen Sulfide H
2
S Parts-per-million (ppm)
4-gas
only
3 32
Updated Nov, 2000 English D1218/3 Page 3 (models changed to D4-2002, D2-2002, to D4-2002-SP)