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 Wohler A 400
Handheld Residential and Light Commercial
Flue Gas/Combustion Analyzer

 
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Wohler A-400 Shown
Product Information
Datasheet 429 KB PDF
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  • Full 4 year warranty
  • LT sensors
  • Tuning Guide for burner adjustment
  • Brilliant OLED full color display technology - all combustion data values on one screen
  • Zoom Function
  • Integrated magnet holder
  • Technician friendly 4 button keypad
  • Ergonomic shape; Comfortable enough to operate with only one hand
  • User Selectable Units for temperature pressure and CO
  • Integrated 4-filter technology including water stop filter, cotton filter, sample conditioner, and sensor protection
  • Smart filter technology
  • Condensate control with LED warning light
  • Sensor diagnostics
  • Continuous self diagnosis with feedback for
    • All Sensors
    • Instrument Functions
    • Condensate
  • Data Management allows for 100 customer records, each with it's own date and time stamp
  • Is an ideal combustion and efficiency analyzer for residential and light commercial applications
  • Tests both Ambient Co and Flue Gas CO (CO Air gree)
  • Has a Differential Manometer for chimney draft and appliance manifold pressure
  • Graph feature for all combustion readings
The Wohler A 400 Flue Gas Analyzers are the multi-functional instruments for residental and light commercial applications.
Specifications
Gas Concentration Data
Oxygen (O2) Sensor Type: Electrochemical
Range: 0 - 21.0 Vol.%
Resolution: 0.1 Vol.%
Accuracy: ±0.3 Vol.%
Carbon Monoxide (CO) Sensor Type: Electrochemical
Range: 0 - 4,000 Vol.ppm
Resolution: 1 ppm
Accuracy: ±5% f.m , absolute ±20 ppm
Draft/Differential
Pressure (PD)
Sensor Type: inWC/psi/Pascal/mbar
Range: ±40 inWC
Resolution: 0.004 inWC
Accuracy: ±2% f.m., absolute ±0.02 inWC
Flue Gas
Temperature (Ts)
Unit: °F/°C
Range: -4°F - 1472°F
Resolution: 0.2°F
Accuracy: 32 - 257°F: ±4°F
257 - 482°F: ±6°F
482 - 752°F: ±8°F
252 - 1472°F: ±1.5% f.m
Air Temperature (TA) Unit: °F/°C
Sensor Type: Semiconductor (Si-PTC-Ni)
Range: 4 - 248°F
Resolution: 0.2°F
Accuracy: ±2°F
Calculated Values
Effc/SL Efficiency and losses calculated in accordance to ASME standards
ETA/Qs Efficiency and losses calculated in accordance to EN European Standards
CO2 in Vol.-% Range O - CO2max resolution 0.1%
COc CO Concentration (COcorrected) air free, adjustable O2ref in °C/°F
Dew Point: in °C/°F
λ/EA (Excess Air) Lambda λ (theoretical air), Excess Air
MCOND Condensate quantity in condensing conditions
Operation Temperature Storage -4 - 122°F
Working 41 - 104°F
Power Supply > 10h (NiMH, 2000 mAh)
Physical Specifications Weight 1.4 lbs
Size 8.1" x 3.3" x 8.7" (without probe)
Length cable-hose: 67"
Length Flexible probe: 21"
Ordering Information
Model Description Buy Online Price
Wohler A-400PRO Sets
A 400PRO
MFR ID: 3356
Wohler 3356 A 400PRO Handheld Residential/Light Commercial Flue Gas/Combustion Analyzer with Hose and Probe  Buy Now Sale $1,701.00
(Reg. $1,890.00)
A 400PRO
MFR ID: 3359
Wohler 3359 A 400PRO Handheld Residential/Light Commercial Flue Gas/Combustion Analyzer Advanced set w/accessories  Buy Now Sale $2,061.00
(Reg. $2,290.00)
A 400PRO
MFR ID: 3361
Wohler 3361 A 400PRO Handheld Residential/Light Commercial Flue Gas/Combustion Analyzer Professional set w/Accessories  Buy Now Sale $2,241.00
(Reg. $2,490.00)
Wohler A-400 Standard Sets
A 400 L
MFR ID: 4625
Wohler 4625 A 400 L Flue Gas Analyzer Kit - US Version  Buy Now Sale $1,341.00
(Reg. $1,490.00)
Included Accessories
 
  • 1 - Operation Manual
  • 1 - Water Stop Filter
  • 25 - Cotton filters
  • 1 - Heavy duty carrying case
Included
Optional Accessories
619 Wohler 619 Condensate Wiper for A 500/A 400 Buy  Now $15.00
1077 Wohler 1077 Spare Parts Bag for soot pump RP72  Buy Now $42.00
2418 Wohler 2418 RP 72 Pump Oil  Buy Now $17.00
2419 Wohler 2419 RP 72 probe brush 6mm  Buy Now $16.00
2450 Wohler 2450 RP72 long cotton filter  Buy Now $19.00
2481 Wohler 2481 RP 72 oil derivates test bottle, acetone  Buy Now $16.00
3326 Wohler 3326 A400 Probe & hose assembly  Discontinued
4160 Wohler 4160 TD 100 Infrared Thermal Fast Printer Buy  Now Sale $314.10
(Reg. $349.00)
6013 Wohler 6013 A400/A600 Air Temp Plug  Buy Now Sale $85.50
(Reg. $95.00)
6019 Wohler 6019 Air Temperature Probe for the A 400  Buy Now Sale $143.10
(Reg. $159.00)
RP 72
MFR ID: 9152
Wohler 9152 RP 72 Smoke Pump  Buy Now Sale $269.10
(Reg. $299.00)
9612 Wohler 9612 A 400 Quick Recharger  Discontinued
22132 Wohler 22132 Battery Board for A 400  Discontinued
22485 Wohler 22485 Display Circuit Board for A 400  Discontinued
Sensors
3354 Wohler 3354 O2 Sensor for A 400 Discontinued
3368 Wohler 3368 CO Sensor, International for A400 Discontinued