General (following DIN EN 61207 / IEC 1207. All data referred to binary gas mixture H2 in N2)
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Measuring ranges
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4, switchable internally and externally; autoranging is also possible
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Largest possible measuring span
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100% H2 (smallest span see „Function“)
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Measuring ranges with suppressed zero
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Any zero point within 0 to 100% can be achieved; smallest possible measuring span 5% H2
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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 61326/A1, EN 61010/1
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Design, enclosure
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Degree of protection
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IP20 according to EN 60529
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Weight
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Approx. 10 kg
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Electrical characteristics
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EMC (ElectroMagnetic Compatibility) interference immunity (all signal wires must be shielded; variations of up to 4% of the smallest range may appear in ranges with strong electromagnetic interferences)
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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 II
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Power supply (see rating plate)
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100 -10 % … 120 V AC +10 %, 48 … 63 Hz or 200 -10 % … 240 V AC +10 %, 48 … 63 Hz
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Power consumption
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Approx. 20 VA
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Fuses
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100 ... 120 V: 1.0T/250
200 ... 240 V: 0.63T/250
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Gas inlet conditions
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Sample gas pressure
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800 … 1100 hPa (absolute)
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Sample gas flow
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30 … 90 l/h (0.5 … 1.5 l/min)
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Sample gas temperature
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0 … 50 ºC
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Sample cell temperature
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Approx. 60 ºC
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Sample gas humidity
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< 90% relative humidity
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Time response
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Warm-up period
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< 30 min (maximum accuracy achieved after 2 hours)
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Response time (T90)
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< 5 s
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Damping (electric time constant)
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0 … 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 s
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Measuring response (referred to 1000 hPa absolute sample gas pressure, 0.5 l/min sample gas flow and 25 °C ambient temperature)
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Output signal fluctuation
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< ± 0.75% of smallest possible measuring range specified on rating plate with an electronic time constant of 1 s (σ = 0.25%)
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Zero drift
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< 1%/week of smallest possible measuring span specified on rating plate
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Measured-value drift
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< 0.5% of smallest possible measuring span specified on rating plate
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Repeatability
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< 1% of respective measuring span
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Minimum detectable quantity
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1% of current measuring range
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Linearity error
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< ± 1% of respective measuring span
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Influencing variables (referred to 1000 hPa absolute 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%/10 K referred to the smallest possible measuring span according to rating plate
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Residual gases
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Deviation in zero point (interfering gas influence see “Influence of interfering gases“)
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Sample gas flow
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< 0.1% of smallest possible measuring span according to rating plate with a change in flow of 0.1 l/h within the permissible flow range
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Sample gas pressure
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< 1% for a pressure variation of 100 hPa
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Power supply
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< 0.1% of output signal span with rated voltage ± 10%
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Electric inputs and outputs
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Analog output
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0/2/4 … 20 mA, floating;
max. load 750 Ω
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Relay outputs
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6, with changeover contacts, freely selectable, e.g. for range identification; loading capacity: 24 V AC/DC/ 1 A, floating
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Analog inputs
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2, designed for 0/2/4 … 20 mA, for external pressure sensor and correction of influence of residual gas
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Binary inputs
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6, designed for 24 V, floating, freely-selectable, 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 binary inputs and 8 relay outputs; also with PROFIBUS PA or PROFIBUS DP
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Ambient conditions
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Perm. ambient temperature
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-30 … +70 °C during storage and transport,
+5 … +45 ºC during operation
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Permissible humidity (dew point must not be fallen below)
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< 90% relative humidity as annual average, during storage and transport
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