General (following DIN EN 61207 / IEC 1207. All data referred to binary gas mixture H₂ in N₂)

Measuring ranges

4, switchable internally and externally; autoranging is also possible

Largest possible measuring span

100% H₂ (smallest span see „Function“)

Measuring ranges with suppressed zero

Any zero point within 0 … 100% can be achieved; smallest possible measuring span 5% H₂

Position of use

Front panel vertical

Conformity

CE identification EN 61326/A1, EN 61010/1

Design, enclosure

Degree of protection

IP65 according to EN 60529

Weight

Approx. 25 kg

Electrical characteristics

EMC (ElectroMagnetic Compatibility) interference immunity (all signal wires must be shielded; variations of up to 4% of the smallest range may appear in ranges with strong electromagnetic interferences)

According to standard requirements of NAMUR NE21 (08/98)

Electrical safety

According to EN 61010-1; overvoltage category II

Power supply (see rating plate)

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

Power consumption (unit)

Approx. 20 VA

Fuses

100 ... 120 V: 1.0T/250

200 ... 240 V: 0.63T/250

Gas inlet conditions

Sample gas pressure

800 … 1100 hPa (absolute)

Sample gas flow

30 … 90 l/h (0.5 … 1.5 l/min)

Sample gas temperature

0 … 50 ºC

Sample cell temperature

Approx. 60 ºC

Sample gas humidity

< 90% relative humidity

Purging gas pressure

• Permanent

165 hPa above environment

• for short periods

max. 250 hPa above environment

Time response (referred to 1000 hPa absolute sample gas pressure, 0.5 l/min sample gas flow and 25 °C ambient temperature)

Warm-up period

< 30 min (maximum accuracy achieved after 2 hours)

Response time (T₉₀)

< 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

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 (maximum accuracy achieved after 2 hours)

< ± 0.75% of smallest possible measuring range specified on rating plate with an electronic time constant of 1 s (σ = 0.25%)

Zero drift

< 1%/week of smallest possible measuring span specified on rating plate

Repeatability

< 1% of respective measuring span

Minimum detectable quantity

1% of current measuring range

Linearity error

< ± 1% 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

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

Residual gases

Deviation in zero point (interfering gas influence see “Influence of interfering gases“)

Sample gas flow

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

Sample gas pressure

< 1% for a pressure variation of 100 hPa

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 Ω

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

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 to +70 °C during storage and transport,

+5 to +45 ºC during operation

Permissible humidity (dew point must not be fallen below)

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