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, smallest possible measuring span with heated version: 0.5% (< 65 °C); 0.5 … 1% (65 … 90 °C); 1 … 2% (90 … 130 °C)

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

IP65 according to EN 60529, gas restricted breathing according to EN 50021

Weight

Approx. 28 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, approx. 330 VA with heated version

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

• Heated units

Overvoltage category II

• Unheated units

Overvoltage category III

Fuses (units wihout heating)

• 100 ... 120 V

F3: 1T/250; F4: 1T/250

• 200 ... 240 V

F3: 0.63T/250; F4: 0.63T/250

Fuses (units wih heating)

• 100 ... 120 V

F1: 1T/250; F2: 4T/250

F3: 4T/250; F4: 4T/250

• 200 ... 240 V

F1: 0.63T/250; F2: 2.5T/250

F3: 2.5T/250; F4: 2.5T/250

Gas inlet conditions

Permissible sample gas pressure

• For analyzers with hoses

500 … 1500 hPa absolute

• For analyzers with piping

500 … 3000 hPa absolute

• For analyzers with piping, Ex version

• Leakage compensation

500 … 1160 hPa absolute

• Continuous purging

500 … 3000 hPa absolute

• Purging gas pressure

• Permanent

< 165 hPa above environment

• Short time

Max. 250 hPa above environment

Sample gas flow

18 … 60 l/h (0.3 … 1 l/min)

Sample gas temperature

0 … 50 ?C (unheated)

15 °C over temperature analyzer section (heated)

Sample gas humidity

< 90 % relative humidity

Time response

Warm-up period

With ambient temperature < 30 min (maximum accuracy achieved after 2 hours)

Response time

T₉₀ <1.5 s

Damping (electric time constant)

0 … 100 s, programmable

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

Approx. 0.5 s

Time for internal signal processing

< 1 s

Pressure correction range

Pressure sensor

• Internal

500 … 2000 hPa absolute

• External

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 2?)

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; heated version up to double error

Power supply

< 0.1% of output signal span with rated voltage ± 10%

Electric inputs and outputs

Analog output

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

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 … +70 °C during storage and transport, +5 to +45 ?C during operation

Permissible humidity

< 90% relative humidity as annual average, during storage and transport (dew point must not be fallen below)