General information | В |
Measurement ranges | 4, internally and externally switchable; automatic measuring range switchover also possible |
Smallest possible span (relating to sample gas pressure 1В 000В hPa absolute, 0.5 l/min sample gas flow, and 25В В°C ambient temperature) | 0В ... 10В vpmВ O2 |
Largest possible measuring span | 0В ... 100% |
Operating position | Front wall vertical |
Conformity | CE mark in accordance with EN 50081-1, EN 50082-2 and RoHS |
Design, enclosure | В |
Degree of protection | IP20 according to ENВ 60529 |
Weight | Approx. 11 kg |
Electrical characteristics | В |
EMC interference immunity (electromagnetic compatibility) | In accordance with standard requirements of NAMURВ NE21 (08/98) and ENВ 61326 |
Electrical safety | In accordance with ENВ 61010-1, overvoltage category II |
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 |
Power consumption | Approx. 37 VA |
Fuse values | 100В ...В 120 V: 1.0T/250 200В ...В 240 V: 0.63T/250 |
Gas inlet conditions | В |
Sample gas flow | В |
| 7.5 l/h |
| 15В ...В 30В l/h |
Permissible sample gas pressure | В |
- Without internal pressure regulator
| 2 000 hPa (abs.) |
- With internal pressure regulator
| 2В 000В ...В 6В 000В hPa (abs.) |
Sample gas temperature | Min.В 0В ... max.В 50В В°C, but above the dew point |
Sample gas humidity | < 1% relative humidity |
Dynamic response | В |
Warm-up period | At room temperature < 30 min (the technical specification will be met after 2 hours) |
Damping (electrical time constant) | 0В ...В 100В s, configurable |
Dead time (high-pressure version) (purging time of the gas path in the unit at 125 ml/min) | 10В ...В 30В s |
Dead time (low-pressure version without pump) | <В 5В s |
Dead time (low-pressure version with pump) | <В 10В s |
Time for device-internal signal processing | <В 1В s |
Pressure correction range | В |
Pressure sensor internal | 800В ... 1В 100В hPa (abs.) |
Measuring response | Based on sample gas pressure 1В 013В hPa absolute, 7.5 l/min sample gas flow and 25В В°C ambient temperature |
Output signal fluctuation | <В В±В 1% of the smallest possible measuring range according to rating plate, with electronic damping constant of 1В s |
Zero point drift | < В±В 1% of the current span/month |
Measured-value drift | < В±В 1% of the current span/month |
Repeatability | <В 3% of the current measuring span |
Detection limit | 1% of current measuring range, <В 0.1В vpm in measuring range 0В ...В 10 vpm |
Linearity error | <В 2% of the current measuring span |
Influencing variables | Based on sample gas pressure 1В 013В hPa absolute, 7.5 l/min sample gas flow and 25В В°C ambient temperature |
Ambient temperature | <В 2%/10 K referred to current measuring span |
Sample gas pressure only possible if the sample gas can flow out into the ambient air | - With deactivated pressure compensation: < 1% of current span/1% pressure change
- With activated pressure compensation: <В 0.2% of current span / 1% pressure change
|
Residual gases, deviation from zero point | В |
- Catalytically active sensor (CAZ)
| Only gases with non-combustible residual gas components can be introduced |
- Catalytically inactive sensor (CIZ)
| Residual gas concentration of 10В vpm H2; CO and CH4 have a lower cross-interference; higher HCs are negligible |
Sample gas flow | < 2% of the smallest possible span with a change in flow of 10 ml/min |
Power supply | < 0.1% of the current measuring range with rated voltage В±В 10% |
Electrical inputs and outputs | В |
Analog output | 0/2/4 ... 20 mA, 4 … 20 mA (NAMUR), isolated; max. load 750 Ω |
Relay outputs | 6, with changeover contacts, freely parameterizable, e.g. for measuring range identification; load: 24В V AC/DC/1В A, isolated |
Analog inputs | 2, dimensioned for 0/2/4 … 20 mA for external pressure sensor and correction of influence of residual gas (correction of cross-interference) |
Digital inputs | 6, designed for 24 V, isolated, freely parameterizable, e.g. for measurement range switchover |
Serial interface | RS 485 |
Options | AUTOCAL function each with 8 additional digital inputs and relay outputs; also with PROFIBUSВ PA or PROFIBUSВ DP |
Climatic conditions | В |
Permissible ambient temperature | -40В ...В +70В В°C during storage and transportation, 5В ...В 45В В°C in operation |
Permissible humidity | < 90% relative humidity as annual average, during storage and transportation (must not fall below dew point) |
