7MB2123-.....-....

ULTRAMAT 6, 19" rack unit

General information

Measuring ranges

4, internally and externally switchable; autoranging is also possible

Smallest possible measuring range

Dependent on the application: e.g. CO: 0 … 10 vpm, CO₂: 0 … 5 vpm

Largest possible measuring span

Dependent on the application

Measuring range with suppressed zero point

Any zero point within 0 … 100 vol.% can be implemented; smallest possible span 20%

Operating position

Front wall, vertical

Conformity

CE mark in accordance with EN 50081-1, EN 50082-2

Influence of interfering gases must be considered separately

Design, enclosure

Weight

Approx. 15 kg (with one IR channel)

Approx. 21 kg (with two IR channels)

Degree of protection

IP20 according to EN 60529

Electrical characteristics

EMC (ElectromagneticCompatibility)

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

Electrical safety

According to EN 61010-1, overvoltage category III

Power supply

100 … 120 V AC (nominal range of use 90 … 132 V), 47 … 63 Hz or

200 … 240 V AC (nominal range of use 180 … 264 V), 47 … 63 Hz

Power consumption

1-channel unit: Approx. 40 VA

2-channel unit: Approx. 70 VA

Fuse values

• 100 ... 120 V

1 T/250 (7MB2121)
1.6 T/250 (7MB2123)

• 200 ... 240 V

0.63 T/250 (7MB2121)
1 T/250 (7MB2123)

Gas inlet conditions

Permissible sample gas pressure

• With hoses

• Without pressure switch

600 … 1 500 hPa (absolute)

• With pressure switch

700 … 1 300 hPa (absolute)

• With pipes (without pressure switch)

600 … 1 500 hPa (absolute)

Sample gas flow

18 … 90 l/h (0.3 … 1.5 l/min)

Sample gas temperature

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

Sample gas humidity

< 90% RH (relative humidity), or dependent on measuring task, non-condensing

Dynamic response

Warm-up period

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

Delayed display (T₉₀-time)

Dependent on length of analyzer chamber, sample gas line and parameterizable damping

Damping (electrical time constant)

0 … 100 s, parameterizable

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

Approximately 0.5 ... 5 s, depending on version

Time for device-internal signal processing

< 1 s

Pressure correction range

Pressure sensor

• Internal

700 … 1 200 hPa absolute

• External

700 … 1 500 hPa absolute

Measuring response(relating to sample gas pressure 1 013 hPa absolute, 0.5 l/min sample gas flow and 25 °C ambient temperature)

Output signal fluctuation

< ± 1% of the smallest possible measuring range according to rating plate

Zero point drift

<± 1% of the current measuring range/week

Measured-value drift

<± 1% of the current measuring range/week

Repeatability

1% of the current measuring range

Detection limit

1 % of the smallest possible measuring range

Linearity error

< 0.5% of the full-scale value

Influencing variables(relating to sample gas pressure 1 013 hPa absolute, 0.5 l/min sample gas flow and 25 °C ambient temperature)

Ambient temperature

< 1% of current measuring range/10 K (with constant receiver cell temperature)

Sample gas pressure

• When pressure compensation has been switched on: < 0.15% of the span/1% change in atmospheric pressure
• When pressure compensation has been switched off: < 1.5% of the span/1% change in atmospheric pressure

Sample gas flow

Negligible

Power supply

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

Environmental conditions

Application-specific measuring influences possible if ambient air contains measured components or cross interference-sensitive gases

Electrical inputs and outputs

Analog output

0/2/4 ... 20 mA, isolated; load  750 

Relay outputs

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

Analog inputs

2, dimensioned for 0/2/4 ... 20 mA for external pressure sensor and accompanying gas influence correction (correction of cross-interference)

Binary inputs

6, designed for 24 V, isolated, freely parameterizable, e.g. for measuring range switchover

Serial interface

RS 485

Options

AUTOCAL function with 8 additional binary 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

< 90% RH (relative humidity) as annual average, during storage and transportation (dew point must not be undershot)