KM 2000 CnHm EM氢气分析仪

The modular constructed ADOS KM 2000 CnHm EM equipment incorporates a microcontroller-aided measurement device for measuring solvents. All combustible gaseous CnHm compounds can be measured with the exception of chlorinated and sulphur-sublimed hydrocarbons.

The thermocouples used for measurements, in conjunction with applying the principle of heat reaction, offer the following advantages:
High degree of sensitivity
Good accuracy
Negligible drift of zero point
Over-range signals have no effect
Gas measurement system
The sampled gas is drawn in by a pump through a feed pipe (heated if required), to the reaction chamber, via a compensating filter, flow regulator and flow-through meter. The gas is warmed to a constant temperature by means of the heater coil and jacket and finally burned in a solid-matter catalytic converter. The difference in temperature before and after combustion, is used as the measurement signal that is prepared and evaluated by the microcontroller-aided analyser.

Measurement principle:  Measuring the heat of combustion in a catalytic converter
Measuring ranges: 0 - 50 mg C/m3 TOC up to 0 - 1600 g/m3 TOC
Minimum detection limit: 1 mg C/m3  TOC
Cross sensitivity(50 mg/m3  measuring range): concentration: max. deviation:
200 mg/m3 SO2 -10 %
30 mg/m3 NO2 -2,5 %
300 mg/m3 CO +108 %
300 mg/m3 NO +7 %

Output signals:  Current interface 0-(4)-20 mAmax. load 400 ohm; RS 232
Response time (t90): < 200 sec. sampling pipe (approx. 36.09 ft; dead time 10 sec.)
Accuracy: < 2 % full-scale error
Permissible ambient temperature: +41 °F to +104 °F
Temperature dependency: < 5 % full-scale error
Sampled gas flow: 125 l (±10 l / h)
Preheating time: approx. 120 min.
Maintenance interval: 4 weeks with auto-calibration1 week without auto-calibration
Mains supply:  115 V / 60 Hz; 230 V / 50 Hz; 600 VA
Dimensions (W x H x D): 23.6 x 18.8 x 19.7 inch
Weight:  approx. 94.79 lbs
Test certificate:  TÜV approval according to the clean-air regulations ("TA-Luft");TÜV-report: 936 / 21 200 245