General information

Operating position

Front wall, vertical

Conformity

CE mark in accordance with EN 50081-1 and EN 50082-2

Design, enclosure

Weight

Approx. 21 kg

Degree of protection

IP20 according to EN 60529

Electrical characteristics

EMC (electromagnetic compatibility)

In accordance with standard requirements of NAMUR NE21 (08/98)

Electrical safety

According to EN 61010-1, overvoltage category III

Auxiliary power

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. 70 VA

Fuse values

120 ... 120 V: F1/F2 = T 1.6 A
200 ... 240 V: F1/F2 = T 1 A

Electrical inputs and outputs (per channel)

Analog output

0/2/4 ... 20 mA, floating; max. load 750 ?

Relay outputs

6, with changeover contacts, freely configurable, e.g. for measuring range identification; load: 24 V AC/DC/1 A, floating, non-sparking

Analog inputs

2, dimensioned for 0/2/4 … 20 mA for external pressure sensor and correction of influence of accompanying gas (correction of cross-interference)

Digital inputs

6, designed for 24 V, floating, freely configurable, e.g. for measuring range switchover

Serial interface

RS 485

Options

AUTOCAL function each with 8 additional digital inputs and relay outputs; also with PROFIBUS PA or PROFIBUS DP

Climatic conditions

Permissible ambient temperature

-30 ... +70 °C during storage and transportation, 5 ... 45 °C during operation

Permissible humidity

< 90% relative humidity, during storage and transportation (dew point must not be undershot)

Measuring ranges

4, internally and externally switchable; autoranging is also possible

Smallest possible measuring range

Dependent on the application, e.g.
CO: 0 ... 10 vpm
CO₂: 0 ... 5 vpm

Largest possible measuring range

Dependent on the application

Measuring ranges with suppressed zero point

Any zero point within 0 ... 100 vol.% can be implemented; smallest possible span 20%

Characteristic

Linearized

Influence of interfering gases must be considered separately

Gas inlet conditions

Permissible sample gas pressure

• Without pressure switch

700 ... 1 500 hPa (absolute)

• With integrated pressure switch

700 ... 1 300 hPa (absolute)

Sample gas flow

18 ... 90 l/h (0.3 ... 1.5 l/min)

Sample gas temperature

Min. 0 to max. 50 °C, but above the dew point

Sample gas humidity

< 90% (relative humidity), or dependent on measuring task, non-condensing

Dynamic response

Warm-up period

At room temperature < 30 min (the technical specification will be met after 2 hours)

Delayed display (T₉₀-time)

Dependent on length of analyzer chamber, sample gas line and configurable damping

Damping (electrical time constant)

0 ... 100 s, configurable

Dead time (purging time of the gas path in the unit at 1 l/min)

Approx. 0.5 ... 5 s, depending on version

Time for device-internal signal processing

< 1 s

Pressure correction range

Pressure sensor

• Internal

700 ... 1 200 hPa absolute

• External

700 ... 1 500 hPa absolute

Measuring response

Based on sample gas pressure 1 013 hPa absolute, 0.5 l/min sample gas flow and 25 °C ambient temperature

Output signal fluctuation

< ± 1% of the smallest possible measuring range according to rating plate

Zero point drift

<± 1% of the current measuring range/week

Measured-value drift

<± 1% of the current measuring range/week

Repeatability

? 1% of the current measuring range

Detection limit

1% of the smallest possible measuring range

Linearity error

< 0.5% of the full-scale value

Influencing variables

Based on sample gas pressure 1 013 hPa absolute, 0.5 l/min sample gas flow and 25 °C ambient temperature

Ambient temperature

< 1% of current measuring range/10 K (with constant receiver cell temperature)

Sample gas pressure

• With disabled pressure compensation: < 0.15% of the span/1% change in atmospheric pressure
• With disabled pressure compensation: < 1.5% of the span/1% change in atmospheric pressure

Sample gas flow

Negligible

Auxiliary power

< 0.1% of the current measuring range with rated voltage ± 10%

Environmental conditions

Application-specific measuring influences possible if ambient air contains measured component or cross interference-sensitive gases

Measuring ranges

4, internally and externally switchable; automatic measuring range switchover also possible

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

Largest possible measuring range

100 vol.% O₂

Measuring ranges with suppressed zero point

Any zero point within 0 ... 100 vol.% can be implemented, provided that a suitable reference gas is used

Gas inlet conditions

Permissible sample gas pressure

• With pipes

500 ... 3 000 hPa absolute

• With hoses

• Without pressure switch

500 ... 1 500 hPa absolute

• With pressure switch

500 ... 1 300 hPa absolute

Sample gas flow

18 ... 60 l/h (0.3 ... 1 l/min)

Sample gas temperature

0 ... 50 ?C

Sample gas humidity

< 90% RH (relative humidity)

Reference gas pressure (high-pressure version)

2 000 ... 4 000 hPa above sample gas pressure, but max. 5 000 hPa

Reference gas pressure (low-pressure version)

Min. 100 hPa above sample gas pressure

Dynamic response

Warm-up period

At room temperature < 30 min (the technical specification will be met after 2 hours)

Delayed display (T₉₀-time)

Min. 1.5 ... 3.5 s, depending on version

Damping (electrical time constant)

0 ... 100 s, configurable

Dead time (purging time of the gas path in the unit at 1 l/min)

Approx. 0.5 ... 2.5 s, depending on version

Time for device-internal signal processing

< 1 s

Pressure correction range

Pressure sensor

• Internal

500 ... 2 000 hPa absolute

• External

500 ... 3 000 hPa absolute

Measuring response

Based on sample gas pressure 1 013 hPa absolute, 0.5 l/min sample gas flow and 25 °C ambient temperature

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?)

Zero point drift

< 0.5%/month of the smallest possible measuring span according to rating plate

Measured-value drift

? 0.5%/month of the current measuring range

Repeatability

? 1%/month of the current measuring range

Detection limit

1% of the current measuring range

Linearity error

1% of the current measuring range

Influencing variables

Based on sample gas pressure 1 013 hPa absolute, 0.5 l/min sample gas flow and 25 °C ambient temperature

Ambient temperature

• < 0.5%/10 K referred to smallest possible span according to rating plate
• With measuring span 0.5%: 1%/10 K

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)

• With disabled pressure compensation: < 2% of the current measuring range /1 % change in atmospheric pressure
• With disabled pressure compensation: < 0.2% of the current measuring range /1 % change in atmospheric pressure

Accompanying gases

Deviation from zero point corresponding to paramagnetic or diamagnetic deviation of accompanying gas

Sample gas flow

< 1% of the smallest possible span according to rating plate with a change in flow of 0.1 l/min within the permissible flow range

Auxiliary power

< 0.1% of the current measuring range with rated voltage ± 10%