| Measuring ranges | 4, switchable internally and externally; autoranging is also possible |
| Smallest possible measuring span (referred to 1000 hPa absolute sample gas pressure, 0.5 l/min sample gas flow and 25 °C ambient temperature) | 0.5% v/v 2% v/v or 5% v/v O2 |
| Largest possible measuring span | 100% v/v O2 (for a pressure over 2000 hPa: 25 % v/v O2) |
| Measuring ranges with suppressed zero | Any zero point is possible between 0 and 100% v/v as long as a suitable reference gas is used (see Table 1 in „Function“) |
| Position of use | Front panel vertical |
| Conformity | CE identification EN 50081-1, EN 50082-2 |
| Design, enclosure | |
| Degree of protection | IP20 according to EN 60529 |
| Weight | Approx. 13 kg |
| Electrical characteristics | |
| Power supply | 100 to 120 V AC (rated range 90 V to 132 V), 48 to 63 Hz or 200 to 240 V AC (rated range 180 V to 264 V), 48 to 63 Hz |
| Power consumption | Approx. 35 VA |
| EMC interference immunity (ElectroMagnetic Compatibility) | According to standard requirements of NAMUR NE21 (08/98), EN 61326, EN 50270 (with gas warning unit) |
| Electrical safety | According to EN 61010-1, overvoltage category III |
| Fuses | 100 ... 120 V: 1.0T/250 200 ... 240 V: 0.63T/250 |
| Gas inlet conditions | |
| Permissible sample gas pressure | |
- For analyzers with piping
| 500 … 3000 hPa absolute |
| | |
| | 500 … 1500 hPa absolute |
| | 500 … 1300 hPa absolute |
| Sample gas flow | 18 … 60 l/h (0.3 … 1 l/min) |
| Sample gas temperature | 0 … 50 ºC |
| Sample gas humidity | < 90 % RH (RH: relative humidity) |
| Time response | |
| Warm-up period | With ambient temperature < 30 min (maximum accuracy achieved after 2 hours) |
| Response time (T90) | min. 1.5 to 3.5 s depending on version |
| Damping (electric time constant) | 0 to 100 s, programmable |
| Dead time (purging time of gas path in analyzer at 1 l/min) | Approx. 0.5 to 2.5 s, depending on version |
| Time for internal signal processing | < 1 s |
| Pressure correction range | |
| Pressure sensor | |
| | 500 … 2000 hPa absolute |
| | 500 … 3000 hPa absolute |
| Measuring response (referred to 1000 hPa absolute sample gas pressure, 0.5 l/min sample gas flow and 25 °C ambient temperature) |
| Output signal fluctuation | < 0.75% of smallest possible measuring range specified on rating plate with an electronic time constant of 1 s (corresponds to ± 0.25% with 2σ) |
| Zero drift | < 0.5%/month of smallest possible measuring span specified on rating plate |
| Measured-value drift | < 0.5%/month of respective measuring span |
| Repeatability | < 1%/month of respective measuring span |
| Minimum detectable quantity | 1% of current measuring range |
| Linearity error | < 1%/month of respective measuring span |
| Influencing variables (referred to 1000 hPa absolute sample gas pressure, 0.5 l/min sample gas flow and 25 °C ambient temperature) |
| Ambient temperature | < 0.5%/10 K referred to the smallest possible measuring span according to rating plate, with measuring span 0.5%: 1%/10 K |
| Sample gas pressure (with air (100 hPa) as reference gas, a correction of the atmospheric pressure fluctuations is only possible when the sample gas is vented to ambient air) | Without pressure compensation: < 2% of measuring span/1% change in pressure with pressure compensation: < 0.2% of measuring span/1% change in pressure |
| Residual gases | Deviation in zero point corresponding to paramagnetic or diamagnetic deviation of residual gas |
| Sample gas flow | < 1% of smallest possible measuring span according to rating plate with a change in flow of 0.1 l/min within the permissible flow range |
| Power supply | < 0.1% of output signal span with rated voltage ± 10% |
| Electric inputs and outputs | |
| Analog output | 0/2/4 to 20 mA, floating; max. load 750 Ω |
| Relay outputs | 6, with changeover contacts, freely selectable, e.g. for range identification; loading capacity: 24 V AC/DC/ 1 A, floating |
| Analog inputs | 2, designed for 0/2/4 … 20 mA, for external pressure sensor and correction of influence of residual gas (correction of cross interference) |
| Binary inputs | 6, designed for 24 V, floating, freely selectable, e.g. for range switching |
| Serial interface | RS 485 |
| Options | Autocal function with 8 binary inputs and 8 relay outputs; also with PROFIBUS PA or PROFIBUS DP |
| Ambient conditions | |
| Perm. ambient temperature | -30 to +70 °C during storage and transport, +5 to +45 ºC during operation |
| Permissible humidity | < 90% RH (RH: relative humidity) as annual average, during storage and transport (dew point must not be fallen below) |
