General information

Based on DIN EN 61207 / IEC 1207. All data based on digital gas mixture H₂ in N₂

Measuring ranges

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

Largest possible measuring span

100 vol.% H₂ (for smallest measuring span, see "Function")

Measuring ranges with suppressed zero point

Any zero point within 0 ... 100 vol.% can be implemented, smallest possible measuring span: 5% H₂

Operating position

Front wall, vertical

Conformity

CE mark in accordance with EN 61326/A1 and EN 61010/1

Design, enclosure

Degree of protection

IP20 according to EN 60529

Weight

Approx. 10 kg

Electrical characteristics

EMC interference immunity (electromagnetic compatibility)

All signal lines must be shielded. Measured value deviations of up to 4% of the smallest measuring range may occur in ranges with strong electromagnetic interference.

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

Electrical safety

In accordance with EN 61010-1; overvoltage category II

Auxiliary power (see nameplate)

100 V -10% ... 120 V +10% AC, 48 ... 63 Hz or 200 V -10% ... 240 V +10% AC, 48 ... 63 Hz

Power consumption

Approx. 20 VA

Fuse values

100 to 120 V: 1.0T/250
200 ... 240 V: 0.63 T/250

Gas inlet conditions

Sample gas pressure

800 ... 1 100 hPa (absolute)

Sample gas flow

30 ... 90 l/h (0.5 ... 1.5 l/min)

Sample gas temperature

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

Temperature of the measuring cell

Approx. 60 ?C

Sample gas humidity

< 90% relative humidity

Dynamic response

Warm-up period

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

Delayed display (T₉₀)

< 5 s

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 s

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 (? = 0.25%)

Zero point drift

< ± 1%/week of the smallest possible measuring span according to rating plate

Measured-value drift

< ± 1%/week of the smallest possible measuring span according to rating plate

Repeatability

< 1% 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

< 1%/10 K referred to smallest possible measuring span according to rating plate

Accompanying gases

Deviation from zero point (for influence of interfering gas see paragraph titled "Interference influences")

Sample gas flow

< 0.2% of the smallest possible span according to rating plate with a change in flow of 0.1 l/min within the permissible flow range

Sample gas pressure

< 1% of the current measuring range with a pressure change of 100 hPa

Auxiliary power

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

Electrical inputs and outputs

Analog output

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

Relay outputs

6, with changeover contacts, freely parameterizable, e.g. for measuring range identification; load: 24 V AC/DC/1 A, isolated

Analog inputs

2, dimensioned for 0/2/4 … 20 mA for external pressure sensor and 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 PROFIBUS PA or PROFIBUS DP

Climatic conditions

Permissible ambient temperature

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

Permissible humidity (dew point must not be fallen below)

< 90% relative humidity as annual average, during storage and transportation