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OXYMAT 6, 19" rack unit |
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General information |
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Measuring ranges |
4, internally and externally switchable; autoranging is also possible |
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Smallest possible span (relating to sample gas pressure 1 000 hPa absolute, 0.5 l/min sample gas flow and 25 °C ambient temperature) |
0.5 vol.%, 2 vol.% or 5 vol.% O2 |
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Largest possible measuring span |
100 vol.% O2(for a pressure above 2 000 hPa: 25 vol.% O2) |
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Measuring ranges with suppressed zero point |
Any zero point can be implemented within 0 … 100 vol.%, provided that a suitable reference gas is used (see Table 1 in "Function") |
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Operating position |
Front wall, vertical |
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Conformity |
CE mark in accordance with EN 50081-1, EN 50082-2 |
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Design, enclosure |
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Degree of protection |
IP20 according to EN 60529 |
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Weight |
Approx. 13 kg |
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Electrical characteristics |
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Power supply |
100 … 120 V AC (nominal range of use 90 … 132 V), 48 … 63 Hz or 200 … 240 V AC (nominal range of use 180 … 264 V), 48 … 63 Hz |
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Power consumption |
Approx. 35 VA |
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EMC (ElectromagneticCompatibility) |
In accordance with standard requirements of NAMUR NE21 (08/98), EN 61326, EN 50270 (with gas warning unit) |
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Electrical safety |
According to EN 61010-1, overvoltage category III |
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Fuse values |
100 ... 120 V: 1.0 T/250 200 ... 240 V: 0.63 T/250 |
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Gas inlet conditions |
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Permissible sample gas pressure |
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500 … 3 000 hPa absolute |
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500 … 1 500 hPa absolute |
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500 … 1 300 hPa absolute |
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Sample gas flow |
18 … 60 l/h (0.3 … 1 l/min) |
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Sample gas temperature |
Min. 0 ... max. 50 °C, but above the dew point |
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Sample gas humidity |
< 90% RH (RH: relative humidity) |
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Reference gas pressure (high-pressure version) |
2 000 ... 4 000 hPa above sample gas pressure, but max. 5 000 hPa |
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Reference gas pressure (low-pressure version) |
Min. 100 hPa above sample gas pressure |
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Dynamic response |
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Warm-up period |
At room temperature < 30 min (the technical specification will be met after 2 hours) |
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Delayed display (T90-time) |
Min. 1.5 … 3.5 s, depending on version |
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Damping (electrical time constant) |
0 … 100 s, parameterizable |
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Dead time (purging time of the gas path in the unit at 1 l/min) |
Approximately 0.5 ... 2.5 s, depending on version |
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Time for device-internal signal processing |
< 1 s |
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Pressure correction range |
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Pressure sensor |
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500 … 2 000 hPa absolute |
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500 … 3 000 hPa absolute |
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Measuring response(relating to sample gas pressure 1 013 hPa absolute, 0.5 l/min sample gas flow and 25 °C ambient temperature) |
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Output signal fluctuation |
< ± 0.75% of the smallest possible measuring range according to rating plate, with electronic damping constant of 1 s (corresponds to ±0.25% at 2 ) |
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Zero point drift |
< ± 0.5%/month of the smallest possible span according to rating plate |
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Measured-value drift |
< ±0.5%/month of the current measuring range |
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Repeatability |
< 1% of the current measuring range |
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Detection limit |
1% of the current measuring range |
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Linearity error |
< 0.1% of the current measuring range |
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Influencing variables(relating to sample gas pressure 1 013 hPa absolute, 0.5 l/min sample gas flow and 25 °C ambient temperature) |
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Ambient temperature |
< 0.5%/10 K relating to the smallest possible measuring range according to rating plate, with measuring span 0.5%: 1%/10 K |
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Sample gas pressure (with air (100 hPa) as reference gas, correction of the atmospheric pressure fluctuations is only possible if the sample gas can vent to ambient air) |
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Carrier gases |
Deviation from zero point corresponding to paramagnetic or diamagnetic deviation of carrier gas |
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Sample gas flow at zero point |
< 1% of the current measuring range according to rating plate with a change in flow of 0.1 l/min within the permissible flow range |
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Power supply |
< 0.1% of the current measuring range with rated voltage ± 10% |
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Electrical inputs and outputs |
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Analog output |
0/2/4 … 20 mA, isolated; max. load 750 |
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Relay outputs |
6, with changeover contacts, freely parameterizable, e.g. for measuring range identification; load: 24 V AC/DC/1 A, isolated |
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Analog inputs |
2, dimensioned for 0/2/4 ... 20 mA for external pressure sensor and residual gas influence correction (correction of cross-interference) |
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Binary inputs |
6, designed for 24 V, isolated, freely parameterizable, e.g. for measuring range switchover |
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Serial interface |
RS 485 |
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Options |
AUTOCAL function with 8 additional binary inputs and relay outputs each, also with PROFIBUS PA or PROFIBUS DP |
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Climatic conditions |
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Permissible ambient temperature |
-30 … +70 °C during storage and transportation, 5 … 45 °C during operation |
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Permissible humidity |
< 90% RH (RH: relative humidity) within average annual value, during storage and transportation (dew point must not be undershot) |