The Biogas Analyser 401 monitors either continuously or intermittently, the gas components contained in
the Biogas (process control) and optionally, monitors the surrounding air to provide an early warning of
dangerous, explosive and non-combustible gases and vapours.
■ Use of various measurement sensors
■ Direct indication of a warning state on an LC-display with colored background lighting
■ Menu-assisted operation via 2 keys
■ 3 alarm levels, independently adjustable from 5–100 % of the selected test range
■ 3 floating alarm outputs for driving external warning and control equipment
■ Floating contact connections for fault and mains failure
■ Serial interface output RS 232 or RS 485
■ 4 – 20 mA current interface
■ Various types of housing available, e.g. 19" rack system, wall-mounting cabinet
■ Up to 6 measurement channels per unit
■ 1 card as Master for the control of the biogas measuring time and interval
■ Extreme service reliability
■ Low energy consumption
■ Peltier cooling element with condensation pump
■ Flow-through adjustement
■ Gas components – filter system and conditioning
■ Water sensor for the detection of condensate break-through
■ Modular construction
■ Monitoring of more than one measuring point possible
■ Monitoring of biogas, landfill gas or digester gas
■ Warning of explosive gas mixtures
■ Warning of gases that endanger health
■ Warning of non-combustible gases
Sensors: Electrochemical sensors Infrared sensors
Sensor input: 2-wire sensors (TOX 592) or 3-wire sensors (GTR 196)
for warning of explosive gas mixtures
Sensor supply: 24 V DC / 200 mA max.
Test ranges:
CO2: 0-50 Vol.%
CH4: 0-100 Vol.%
O2: 0 - 21 Vol.%
(optionally continuous)
H2: 0-2 Vol. %
H2S: 0-50 ppm ... 0-5.000 ppm
(only discontinuous)
other ranges by request
Accuracy: < ±3 %, f.s.d.
Ambient temperature: +5 °C to +45 °C
Temperature effects: < 5 % for a ±20 °C change
Installation: Wall-mounting
Output signals: Current output 4 – 20 mA;
RS 232 or RS 485 interface;
for each measurement channel:
3 alarm relays
1 fault relay
Relay rating: 230 V, 450 VA
Voltage supply:
optional:
230 V / 50 Hz
115 V / 60 Hz
Power consumption: 100 VA
Dimensions
(W x H x D):
600 x 478 x 480 mm (9 HU)
Weight: approx. 60 kg
