General
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Measuring ranges
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4, switchable internally and externally; autoranging is also possible
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Smallest possible measuring range
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Depending on application, e.g., CO: 0 … 10 vpm, CO2: 0 … 5 vpm
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Largest possible measuring span
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Depending on application
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Measuring range with suppressed zero
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Every zero possible within 0 to 100 Vol.%, smallest possible measuring span 20%
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Characteristic
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Linearized
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Position of use
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Front panel vertical
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Conformity
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CE identification EN 50081-1, EN 50082-2
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Design, enclosure
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Weight
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Approx. 15 kg (with one IR channel),
approx. 21 kg (with two IR channels)
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Degree of protection
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IP20 according to EN 60529
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Electrical characteristics
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Electromagnetic compatibility (EMC)
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According to standard requirements of NAMUR NE21 (08/98)
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Electrical safety
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According to EN 61010-1, overvoltage category III
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Power supply
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100 to 120 V AC (rated range 90 to 132 V), 48 to 63 Hz or
200 to 240 V AC (rated range 180 to 264 V), 48 to 63 Hz
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Power consumption
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1-channel unit: approx. 40 VA
2-channel unit: approx. 70 VA
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Fuses
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1T/250 (7MB2121), 1.6T/250 (7MB2123)
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0.63T/250 (7MB2121), 1T/250 (7MB2123)
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Gas inlet conditions
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Perm. sample gas pressure
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600 to 1500 hPa (absolute)
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600 to 1300 hPa (absolute)
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- for analyzers with pipes (without pressure switch)
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600 to 1500 hPa (absolute)
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Sample gas flow
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18 to 90 l/h (0.3 to 1.5 l/min)
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Sample gas temperature
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0 to 50 °C
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Sample gas humidity
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< 90 % RH (relative humidity) or depending on application, non condensing
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Time response
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Warm-up period
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With amb. temperature < 30 min (maximum accuracy achieved after 2 hours)
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Response time (T90 time)
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Dependent on length of analyzer cell, sample gas line and damping
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Damping (electric time constant)
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0 to 100 s, programmable
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Dead time (purging time of gas path in analyzer at 1 l/min)
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Approx. 0.5 to 5 s, depending on version
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Time for internal signal processing
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< 1 s
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Pressure correction range
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Pressure sensor
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600 to 1200 hPa absolute
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600 to 1500 hPa absolute
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Measuring response (maximum accuracy achieved after 2 hours)
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Output signal fluctuation
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± 0.1 % to ± 1 % of smallest possible measuring range specified on rating plate depending on application with the unit specific electronic time constant (corresponds to ± 0.33% at 2?)
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Zero drift
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< 1% of measuring range/week
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Measured-value drift
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< 1% of measuring range/week
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Repeatability
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? 1% of respective measuring range
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Minimum detectable quantity
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1% of smallest measuring range
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Linearity error
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< 0.5% of full-scale value
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Influencing variables (referred to 1000 hPa sample gas pressure, 0.5 l/min sample gas flow and 25 °C ambient temperature)
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Ambient temperature
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< 1% of measuring range/10 K (for a constant temperature of the reception cell)
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Sample gas pressure
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With pressure compensation: < 0.15% of span/1% change in atmospheric pressure
without pressure compensation: < 1.5% of span/1% change in atmospheric pressure
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Sample gas flow
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Negligible
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Power supply
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< 0.1% of output signal span with rated voltage ± 10%
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Ambient conditions
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Application-dependent influencing of measurement if ambient air contains measured component or cross-sensitive gases
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Electric inputs and outputs
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Analog output
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0/2/4 to 20 mA. floating; load ? 750 ?
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Relay outputs
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6, with changeover contacts, freely parameterizable, e.g. for range identification; loading capacity: 24 V AC/DC / 1 A floating, non sparking
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Analog inputs
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2, designed for 0/2/4 to 20 mA, for external pressure sensor and correction of influence of residual gas (correction of cross interference)
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Binary inputs
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6, designed for 24 V, floating, freely parameterizable, e.g. for range switching
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Serial interface
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RS 485
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Options
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Autocal function with 8 additional binary inputs and 8 relay outputs, also with PROFIBUS PA and PROFIBUS DP
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Ambient conditions
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Permissible ambient temperature
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-30 to +70 °C during storage and transport, +5 to +45 °C during operation
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Permissible humidity
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< 90 % RH (relative humidity) as annual average, during storage and transport (dew point must not be fallen below)
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