Wöhler | A400i

Combustion Gas Analyser, built-in flexible probe

Reference : WOHA400i
Serie : Wohler, Wöhler A400
Brand : Wöhler
Analyseur de combustion Wöhler A 400i avec sonde flexible intégrée:  

· Pour installation et prestataire SAV GAZ 
· Capacité cellule CO: maxi 10.000 ppm 
· Analyse de tous les combustibles 
· Mesure de tirage 
· Mesure de CO Ambiant 
· Mesure de pression gaz 
· Rendement > 100 % 
· Mémoire: 100 mesures 

· Sonde de fumée flexible 
· Écran couleur (OLED) 
· Utilisation à une seule main 
· Autodiagnostic de lappareil (fonctionnement de
lappareil, contrôle des cellules, surveillance du
parcours du combustible) 
· Batteries NiMH ou piles standards 
· Remplacement des cellules de mesure réalisable par soi-même 
· Fixation sûre par aimants intégrés sur socle et écran
Expédié sous 2 semaines
Quick quote for this product
Quick quote for this product
Wöhler A 400 serie

 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

Safety / Reliability

· integrated 4-filter technology including water stop filter. cotton filter. sample conditioner and sensor protection
· LT-sensors2)
· full 4 year warranty on Wohler A 400PRO instrument including sensors2)
· continuous self diagnosis with feedback for:
  · all sensors
  · instrument functions
  · condensate

Data Management

· memory for 100 customer records
· date and time stamp

Variety of Applications

· Wöhler Tuning Guide with graphical support
· combustion and efficiency analyser 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


· TÜV approved
· EN 50379-2
· EN 50379-1 for CO

 Technical Data

Oxygen (O2):
Sensor type: electrochemical
Range: 0.0...21.0 Vol.-%
Resolution: 0.1 Vol.-%
Accuracy: ± 0.3 Vol.-%

Carbon monoxide (CO):
Sensor type: electrochemical
Range: 0...4.000 ppm
Resolution: 1 ppm
Accuracy: ± 5 % f.m.. absolute ±20 ppm

Draft / Differential Pressure (PD):
Unit: Pascal
Range: ± 100 hPa
Resolution: 1 Pa
Accuracy: ± 2 % f.m.. absolute ± 5 Pa

Flue Gas Temperature (TS):
Unit: °C
Sensor type: thermoelement (NiCr-Ni)
Range: 0...133 °C ± 2°C
133...800°C: ± 1.5 % f. m.
Resolution: 0.1 °C

Air Temperature (TA):
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 / 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 reference level
Dew point: in °C / °F
Lambda / EA : Lambda (theoretical air). Excess air
mCOND : 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
Product Details
41-Standard Manufacturer Warranty 1 YEAR
339-Gas measured O2 (Oxygen) | CO (Carbon monoxide) | CO2 (Carbon dioxide)
340-Measurement type CO of smokes | Peak ambient CO | Air excess | Draft | Temperature of smokes | Pressure
542-Metrology/Quality documentation supplied Calibration certificate (With measures table)
132-Package includes 4 batteries, user manual
35-Dimension (HxWxD) (mm) 205(740 with probe)x85x220 mm
13-Net Weight 640g
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