Measurement ranges | 4, internally and externally switchable; automatic measurement range changeover also possible |
Smallest possible measuring span (relating to sample gas pressure 1000 hPa absolute, 0.5 l/min sample gas flow and 25 °C ambient temperature) | 0 ... 10 vpm O2 |
Largest possible measuring span | 0 ... 99999 vpm |
Operating position | Front wall vertical |
Conformity | CE mark in accordance with EN 50081-1, EN 50082-2 and RoHS |
Design, enclosure | |
Degree of protection | IP20 according to EN 60529 |
Weight | Approx. 11 kg |
Electrical characteristics | |
EMC (Electromagnetic Compatibility) | In accordance with standard requirements of NAMUR NE21 (08/98) and EN 61326 |
Electrical safety | According to EN 61010-1, overvoltage category II |
Auxiliary power | 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 |
Power consumption | Approx. 37 VA |
Fuse values | 100 ... 120 V: 1.0T/250 200 ... 240 V: 0.63T/250 |
Gas inlet conditions | |
Sample gas flow | |
| 7.5 l/h |
| 15 ... 30 l/h |
Permissible sample gas pressure | |
- without internal pressure regulator
| 2000 hPa (abs.) |
- with internal pressure regulator
| 2000 ... 6000 hPa (abs.) |
Sample gas temperature | 0 ... 50 °C |
Sample gas humidity | < 1% relative humidity |
Dynamic response | |
Heating time | at room temperature < 30 min (the technical specification is will be observed after 2 hours) |
Display delay (T90) | ~ 1 min upon switch from N2 to air |
Damping (electrical time constant) | 0 ... 100 sec, parameterizable |
Dead time (purge time of the gas route in the device at 125 ml/min) | 10 ... 30 sec |
Time for device-internal signal processing | < 1 sec |
Pressure correction range | |
Pressure sensor internal | 800 ... 1100 hPa (abs.) (permissible sample gas pressure, see gas inlet conditions) |
Measuring behavior (relating to sample gas pressure 1000 hPa absolute, 7.5 l/min sample gas flow and 25 °C ambient temperature) | |
Output signal fluctuation | < 1 % of the smallest possible measurement range as per nameplate with electronic damping constant of 1 s |
Zero point drift | < ± 1% of the current measuring span/month |
Measured value drift | < ± 1% of the current measuring span/month |
Repeat precision | < 3% of the current measuring span |
Minimum detectable quantity | 1% of current measurement range, < 0.1 vpm in measurement range 0 ... 10 vpm |
Deviation of linearity | < 2% of the current measuring span |
Influencing variables (relating to sample gas pressure 1000 hPa absolute, 7.5 l/min sample gas flow and 25 °C ambient temperature) | |
Ambient temperature | < 2%/10 K relating to the current measuring span |
Sample gas pressure only possible if the sample gas can flow out into the ambient air | 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 |
Carrier gases, zero point deviation | |
- Catalytically active sensor (CAZ)
| Only gases with non-combustible carrier gas components can be introduced |
- Catalytically inactive sensor (CIZ)
| Carrier gas concentration of 10 vpm H2; CO and CH4 have a low diagonal effect; higher CVs (concentration values) are negligible |
Sample gas flow | < 2% of the smallest possible measuring span with a flow change of 10 ml/min |
Auxiliary power | < 0.1% of the current measurement range with nominal voltage ± 10% |
Electrical inputs and outputs | |
Analog output | 0/2/4 ... 20 mA, 4 ... 20 mA (NAMUR), potential-free; apparent ohmic resistance max. 750 ? |
Relay outputs | 6, with changeover contacts, freely parameterizable, e.g. for measurement range identification; load capacity: 24 V AC/DC / 1 A, potential-free |
Analog inputs | 2, designed for 0/2/4 ... 20 mA for pressure sensor external and carrier gas inflow correction (diagonal gas correction) |
Binary inputs | 6, designed for 24 V, potential-free, freely parameterizable, e.g. for measurement range changeover |
Serial interface | RS 485 |
Options | AUTOCAL function each with 8 additional binary inputs and relay outputs, also with PROFIBUS PA or PROFIBUS DP |
Climatic conditions | |
Permissible ambient temperature | -40 ... +70 °C during storage and transportation, 5 ... +45 °C during operation |
Permissible humidity | < 90% relative humidity within average annual value, during storage and transportation (no passing below the dew point) |