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

Span

Application-dependent (see ordering data)

Measuring ranges with suppressed zero point

Application-dependent (see ordering data)

Operating position

Front wall, vertical

Conformity

CE marking in accordance with EN 50081‑1/EN 50081‑2 and RoHS

Design, enclosure

Degree of protection

IP65 according to EN 60529

Weight

Approx. 25 kg

Electrical characteristics

EMC interference immunity (electromagnetic compatibility)

In accordance with standard requirements of NAMUR NE21 (08/98) and EN 61326

Electrical safety

In accordance with EN 61010-1; overvoltage category II

Auxiliary power (see nameplate)

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

or

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

Power consumption

• Approx. 25 VA (gas connection block unheated)
• Approx. 330 VA (gas connection block heated)

Fuse values (gas connection unheated)

100 ... 120 V

F3 1T/250

F4 1T/250

200 ... 240 V

F3 0.63T/250

F4 0.63T/250

Fuse values (gas connection heated)

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

Sample gas pressure

800 ... 1 100 hPa (absolute)

Sample gas flow

30 ... 90 l/h

Sample gas temperature

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

Temperature

• of the measuring cell (sensor)

70 єC

• of the measurement cell block (base)

80 єC (heated)

Sample gas humidity

< 90% relative humidity

Purging gas pressure

• Permanent

165 hPa above ambient pressure

• For short periods

Max. 250 hPa above ambient pressure

Time response

The dynamic and measuring response refers to the measurement of H₂ in N₂ (based on the sample gas pressure 1 000 hPa absolute, sample gas flow 0.5 l/min, and ambient temperature 25 °C

Warm-up period

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

Delayed display (T₉₀)

Approx. 35 s (including dead time)

Electrical damping

0 ... 100 s, configurable

Dead time (the diffusion to the probes is the determining variable)

Approx. 34 s

Measuring response

The dynamic and measuring response refers to the measurement of H₂ in N₂ (based on the sample gas pressure 1 000 hPa absolute, sample gas flow 0.5 l/min, and ambient temperature 25 °C

Output signal fluctuation
(3Пѓ value)

< ± 1% of the smallest possible span according to rating plate with electronic damping constant of 1 s

Zero point drift

< ± 1% of the current span/week

Measured-value drift

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

Repeatability

< ± 1% of the current span

Detection limit

1% of the smallest possible span according to rating plate

Linearity error

< ± 1% of the current span

Influencing variables

Based on sample gas pressure 1 000 hPa absolute, 0.5 l/min sample gas flow and 25 °C ambient temperature

Ambient temperature

< 2%/10 K referred to smallest possible span according to rating plate

Accompanying gases

Deviation from zero point (for influence of interfering gas, see section "Cross-interference")

Sample gas flow

0.2% of the current measuring span with a change in flow of 0.1 l/min within the permissible flow range

Sample gas pressure

< 1% of the span with a change in pressure of 100 hPa

Auxiliary power

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

Electrical inputs and outputs

Analog output

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

Relay outputs

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

Analog inputs

2, dimensioned for 0/2/4 вЂ¦ 20 mA for external pressure sensor and 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 with 8 additional digital inputs and relay outputs, also with PROFIBUS PA (on request) or PROFIBUS DP (on request)

Climatic conditions

Permissible ambient temperature

-40 ... +70 °C during storage and transportation, 5 ... 45 °C in operation

Permissible humidity (dew point must not be fallen below)

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