Measurement ranges
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4, internally and externally switchable; automatic measurement range changeover also possible
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Smallest possible measuring span (relating to sample gas pressure 1000 hPa absolute, 0.5 l/min sample gas flow and 25 °C ambient temperature)
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0 ... 10 vpm O2
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Largest possible measuring span
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0 ... 99999 vpm
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Operating position
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Front wall vertical
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Conformity
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CE mark in accordance with EN 50081-1, EN 50082-2 and RoHS
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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. 11 kg
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Electrical characteristics
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EMC (Electromagnetic Compatibility)
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In accordance with standard requirements of NAMUR NE21 (08/98) and EN 61326
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Electrical safety
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According to EN 61010-1, overvoltage category II
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Auxiliary power
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100 ... 120 V AC (nominal use range
90 ... 132 V), 48 ... 63 Hz or
200 ... 240 V AC (nominal use range
180 ... 264 V), 48 ... 63 Hz
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Power consumption
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Approx. 37 VA
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Fuse values
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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 flow
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7.5 l/h
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15 ... 30 l/h
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Permissible sample gas pressure
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- without internal pressure regulator
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2000 hPa (abs.)
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- with internal pressure regulator
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2000 ... 6000 hPa (abs.)
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Sample gas temperature
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0 ... 50 °C
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Sample gas humidity
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< 1% relative humidity
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Dynamic response
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Heating time
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at room temperature < 30 min (the technical specification is will be observed after 2 hours)
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Display delay (T90)
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~ 1 min upon switch from N2 to air
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Damping (electrical time constant)
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0 ... 100 sec, parameterizable
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Dead time (purge time of the gas route in the device at 125 ml/min)
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10 ... 30 sec
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Time for device-internal signal processing
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< 1 sec
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Pressure correction range
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Pressure sensor internal
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800 ... 1100 hPa (abs.) (permissible sample gas pressure, see gas inlet conditions)
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Measuring behavior (relating to sample gas pressure 1000 hPa absolute, 7.5 l/min sample gas flow and 25 °C ambient temperature)
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Output signal fluctuation
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< 1 % of the smallest possible measurement range as per nameplate with electronic damping constant of 1 s
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Zero point drift
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< ± 1% of the current measuring span/month
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Measured value drift
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< ± 1% of the current measuring span/month
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Repeat precision
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< 3% of the current measuring span
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Minimum detectable quantity
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1% of current measurement range,
< 0.1 vpm in measurement range
0 ... 10 vpm
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Deviation of linearity
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< 2% of the current measuring span
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Influencing variables (relating to sample gas pressure 1000 hPa absolute, 7.5 l/min sample gas flow and 25 °C ambient temperature)
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Ambient temperature
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< 2%/10 K relating to the current measuring span
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Sample gas pressure only possible if the sample gas can flow out into the ambient air
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When pressure compensation has been switched off: < 1% of the current measuring span/1% pressure change
When pressure compensation has been switched on: < 0.2% of the current measuring span/1% pressure change
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Carrier gases, zero point deviation
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- Catalytically active sensor (CAZ)
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Only gases with non-combustible carrier gas components can be introduced
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- Catalytically inactive sensor (CIZ)
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Carrier gas concentration of 10 vpm H2; CO and CH4 have a low diagonal effect; higher CVs (concentration values) are negligible
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Sample gas flow
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< 2% of the smallest possible measuring span with a flow change of 10 ml/min
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Auxiliary power
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< 0.1% of the current measurement range with nominal voltage ± 10%
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Electrical inputs and outputs
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Analog output
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0/2/4 ... 20 mA, 4 ... 20 mA (NAMUR), potential-free; apparent ohmic resistance max. 750 ?
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Relay outputs
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6, with changeover contacts, freely parameterizable, e.g. for measurement range identification; load capacity: 24 V AC/DC / 1 A, potential-free
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Analog inputs
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2, designed for 0/2/4 ... 20 mA for pressure sensor external and carrier gas inflow correction (diagonal gas correction)
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Binary inputs
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6, designed for 24 V, potential-free, freely parameterizable, e.g. for measurement range changeover
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Serial interface
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RS 485
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Options
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AUTOCAL function each with 8 additional binary inputs and relay outputs, also with PROFIBUS PA or PROFIBUS DP
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Climatic conditions
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Permissible ambient temperature
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-40 ... +70 °C during storage and transportation, 5 ... +45 °C during operation
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Permissible humidity
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< 90% relative humidity within average annual value, during storage and transportation (no passing below the dew point)
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