Technical data

SAFETY / RELIABILITY
· Integrated 4-filter technology including water stop filter,
cotton filter, sample conditioner and sensor protection
· LT-sensors
1)
· Full 4 year warranty on instrument including sensors
1)
· Continuous self-diagnosis with feedback for:
· All sensors
· Instrument functions
· Condensate
FEATURES AND BENEFITS
· Color OLED display – all combustion data values on one
screen
· Zoom function
· Integrated magnetic holder
· Technician-friendly 4 button keypad
· Ergonomic shape: comfortable one-hand operation
· Graphic function
· User selectable units for temperature, pressure and CO
VARIETY OF APPLICATIONS
· Wöhler Tuning Guide with graphical support
· Combustion and efficiency analyzer for residential and light
commercial applications
· Ambient CO tester
· Flue gas CO tester (CO air free)
· Differential manometer for chimney draft and appliance
manifold pressure
· Graph feature for all combustion readings
DATA MANAGEMENT
· Memory for 100 customer records
· Date and time stamp
APPROVALS
· TÜV approved
· EN 50379-2
· EN 50379-1 for CO
WÖHLER A 400 | RESIDENTIAL AND LIGHT COMMERCIAL APPLICATIONS
1)
Wöhler A 400/A400
Pro
, except for thermocouples and batteries; for further information see our guarantee guidelines
BATTERY
OPERATION
MEMORY DATA
PRINTER
WÖHLER
TUNING GUIDE
IR PORT
TECHNICAL DATA
Oxygen (O
2
)
Sensor type .......................... electrochemical
Range .................................. 0.0...21.0 Vol.-%
Resolution ............................ 0.1 Vol.-%
Accuracy .............................. ± 0.3 Vol.-%
Carbon monoxide (CO) (Wöhler A 400
PRO
)
Sensor type .......................... electrochemical
Range .................................. 0...4,000 ppm
Resolution ............................ 1 Vol.-ppm
Accuracy .............................. ± 5 % f.m., absolute ±20 ppm
Carbon monoxide (CO) (Wöhler A 400 L)
Sensor type .......................... electrochemical
Range .................................. 0...10,000 ppm
Resolution ............................ 1 ppm
Accuracy .............................. ± 10 % f.m., absolutee ±40 ppm
Nitrate monoxide (NO) (Wöhler A 400
PRO
)
Sensor type .......................... electrochemical
Range .................................. 0...1,000 ppm
Resolution ............................ 1 Vol.-ppm
Accuracy .............................. ± 5 % f.m., ± 5% Vol.-ppm (<100 ppm)
Draft / Differential Pressure (PD)
Unit .....................................Pascal
Range .................................. ± 100 hPa
Resolution ............................ 1 Pa
Accuracy .............................. ± 2 % f.m., absolute ± 5 Pa
Flue Gas Temperature (T
S
)
Unit .....................................°C
Sensor type .......................... thermoelement (NiCr-Ni)
Range .................................. -20...800 °C ± 2°C
Accuracy .............................. 133...800 °C: ± 1.5 % f. m.
Resolution ............................ 0.1 °C
Air Temperature (T
A
)
Unit .....................................°C
Sensor type .......................... semiconductor (Si-PTC-Ni)
Range .................................. -20.0 °C...120.0 °C
Resolution ............................ 0.1°C
Accuracy .............................. ±1°C
Calculated Values
Effc. / SL .............................. efficiency and losses calculated in accordance to ASME standards
ETA / Q
S
...............................efficiency and losses calculated in accordance to EN European
Standards
CO
2
in Vol.-% .......................range O – CO
2
max, resolution 0.1 %
CO
c
...................................... CO concentration (CO
corrected
) air free, adjustable O
2ref
reference level
Dew point ............................in °C / °F
λ / EA ................................... Lambda λ (theoretical air), Excess air
m
COND
...................................condensate quantity in condensing conditions
Work temperature .............+5°C...40°C
Storage temperature .........-20°C...50°C
Battery lifetime ..................> 10 h (NiMH, 2000 mAh)
Weight ................................ 640 g
Size ....................................205 x 85 x 220 mm (without probe)
Length cable-hose ............1700 mm
Length flexible probe ........540 mm
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19
VISUAL INSPECTION
MEASURING INSTRUMENTS
LEAKAGE AND PRESSURE
SWEEP INSTRUMENTS
MEASURING INSTRUMENTS
IAQ/BUILDING
MEASURING INSTRUMENTS
FLUE GAS ANALYSIS