Measured components

Max. 4, of which up to 3 infrared-sensitive gases plus oxygen

Measuring ranges

2 per component

Characteristics

Linearized

Display

LCD with LED backlighting and contrast control, function keys 80 characters (4 lines/20 characters)

Position of use

Front panel vertical

Design, enclosure

Weight

Approx. 10 kg

Degree of protection, 19" unit and desktop unit

IP20 to EN 60529

Electrical characteristics

EMC interference immunity (ElectroMagnetic Compatibility), (safety extra-low voltage (SELV) with safe isolation)

According to standard requirements of NAMUR NE21 (08/98) or EN 50081-1, EN 50082-2

Power supply

100 V AC, +10%/-15%, 50 Hz, 120 V AC, +10%/-15%, 50 Hz, 200 V AC, +10%/-15%, 50 Hz, 230 V AC, +10%/-15%, 50 Hz, 100 V AC, +10%/-15%, 60 Hz, 120 V AC, +10%/-15%, 60 Hz, 230 V AC, +10%/-15%, 60 Hz

Power consumption

Approx. 60 VA

Electric inputs and outputs

Analog output

per component, 0/2/4 to 20 mA, NAMUR, floating, max. load 750 Ω

Relay outputs

8, with changeover contacts, freely selectable, e.g. for range identification, loading capacity, 24 V AC/DC /1 A, floating, non sparking

Binary inputs

3, designed for 24 V, floating

• Pump

• AUTOCAL

• Synchronization

Serial interface

RS 485

AUTOCAL function

Automatic analyzer calibration with ambient air (depending on measured component), cycle time adjustable from 0 (1) to 24 hours

Options

Supplementary electronics with 8 additional binary inputs and relay outputs, e.g. for external automatic calibration and for PROFIBUS PA or PROFIBUS DP

Ambient conditions

Permissible ambient temperature

• Operation

+5 … +45 °C

• Storage and transport

-20 … +60 °C

Permissible ambient humidity

< 90% RH (relative humidity) for storage and transport

Permissible pressure variations

700 … 1200 hPa

Sample gas pressure

Sample gas pressure

• Without pump

unpressurized

• With pump

unpressurized suction mode, factory-adjusted with 2 m hose at sample gas outlet; an upper range value calibration is required in case of other venting conditions

Sample gas flow

72 … 120 l/h (1.1 … 2 l/min)

Sample gas temperature

0 … 50 °C

Sample gas humidity

< 90% RH (relative humidity) no condensation

Measuring ranges

See Ordering Data

Chopper compartment purge

Inlet pressure ca 3000 hPa, purging gas consumption ca 100 ml/min

Time response

Warm-up period

Approx. 30 min (at ambient temperature), (maximum accuracy is achieved after approx. 2 hours)

Response time (T₉₀ time)

Dependent on the length of the sample gas cell, the sample line and the programmable damping

Damping (electronic time constant)

Selectable from 0 to 99.9 s

Measuring response

Noise of output signal

< 1 % of smallest measuring range (see rating plate)

Display resolution

dependent on selected measuring range; the number of digits after the decimal point can be selected

Minimum detectable quantity

1% of current measuring range

Resolution of output signal

< 0.1% of output signal span, max. 4.5 digits

Characteristic

Linearized

Linearity error

In largest measuring range: < 1% of full-scale value; in smallest measuring range: < 2% of full-scale value

Reproducibility

≤ 1% of smallest measuring range

Influencing variables

Drift

• With AUTOCAL

Negligible

• Without AUTOCAL

< 2% of smallest measuring range/week

Temperature

Max. 2% of smallest possible measuring range according to rating plate per 10 K with an AUTOCAL cycle time of 6 h

Atmospheric pressure

< 0.2% of measuring range per 1% change in pressure, corrected by internal pressure sensor

Power supply

< 0.1% of output signal span with a variation of ± 10%

Power frequency

± 2% of full-scale value with a frequency variation of ± 5%

Measuring ranges

0 … 5% or 0 … 25% O₂, parameter can be set

Typical combustion exhaust gas

Influence: < 0.05% O₂

Lifetime

Approx. 2 years with 21% O₂; continuous operation < 0.5% O₂ will damage the measuring cell

Time response

Response time (T₉₀ time)

Dependent on dead time and selectable damping, not > 30 s with a sample gas flow of approx. 1.2 l/min

Measuring response

Noise of output signal

< 0.5% of full-scale value

Display resolution

< 0.2% of full-scale value

Resolution of output signal

< 0.2% of output signal span

Reproducibility

≤ 0.05% O₂

Influencing variables

Oxygen content

operation at times < 0.5 % O₂ distorts the measured value

Auxiliary gas

the oxygen sensor must not be used when the auxiliary gas contains the following components: H₂S, chlorine or fluorine compounds, heavy metals, aerosols, mercaptans, alkaline components (as e.g. NH₃ in % range)

Humidity

H₂O dew point ≥ 2 °C; the oxygen sensor must not be used with dry sample gases (no condensation)

Drift

• with AUTOCAL

Negligible

• without AUTOCAL

1 % O₂/year in air, typical

Temperature

< 0.5% O₂ per 20 K, referred to a measured value at 20 °C

Atmospheric pressure

< 0.2% of measured value per 1% pressure variation