Technical data


(*) Symbol for unit special fabrication


·        Main dimensions                                19" 4HE




·        Weight:        appr.12 kg


·        Environmental conditiones

Operating conditions

Operation class:        +5/+45/+30+90/



Storage conditions:


Environmental temperature:        +10 to +35°C


Highest temperature/humidity coupling:        +20°C / 80%


Pollution of air:                SO2 contents=1 mg/m3

       residual pollutant contents=

                       0.1 mg/m3


Storage time:        max. 2 Years


Transport conditions

Environmental conditions:        - 30 to +50 °C

Highest temperature/humidity coupling:        +25°C / 98%


Auxiliary energy

       Mains voltage:                220 V

                       110, 240

                       admissible deviation:

                       +10 to -15 %

       Mains frequency:                        50 + 1 Hz

       Power consumption:                70 VA after the warming-up

                       time

       Warming-up time:                1 hour


Protection measures:

Interelement protection:        IP 54

Protection class:        I

Protection quality:

Noise suppression:        Limit Value 1/ 13


Conditions of the gas to be measured

Flow rate:        30 to 60 l/h

       preparation of the gas to be measured as well as fed

       using auxiliary equipment




Characteristics

Static characteristics        The errors indicated are related to the analogue

       output current signal 0 to 20 mA

       For the unit-internal digital indication, pay

       attention to the additional indication error of +1 %

       of the output of the standard signal.


Right curve:                cf. “Testing Certificate'”

Error class:                1.6 for measuring spans

                       > 2.5 vol.% oxygen

               2.5 for measuring spans

       < 2.5 vol.% oxygen

               2.5 for measuring spans

               2.5 vol.% with additional

                       linearization equipment 1*)

       in the 1-st measuring range



Additional error by

atmospheric pressure:                < j2 % of the measured value/

                       10 hPa in the range of 860

                       to 1060 hPa; no error if an

                       escape controller is used.



Mains voltage:        <= +-0,3% of the measuring span/ 10%

       Variation of the mains voltage in the range of

       the permissible deviation


Environmental temperature:                <= +- 1,5% of the measuring span/ 10K in the range

               between 5 to 45 °C

               ( for the linearized 1 st. Measuring range*)

               <= +- 2% of the measuring span/ 10 K in the range

               between 5 to 45 °C




Sensitivity drift:        <= 1% of the measuring span / 200h



Zero-point drift:        <= 1% of the measuring span / 200h



  • Dynamic characteristics time behaviour for unit design (without inlet line, filter etc.):

       normal        inclination-independent


       Running time:                35s                        5 to 8s

       Settling time                30s                        45 to 190s




Materials of the gascarrying parts for unit designs:


normal          corrosion-resistant (*)

glass, AlMg 5; glass; X8CrNiMoTi; PV0 soft or    18.10; FV0 soft or fluoro elasto- fluoro elastomer; epoxy re- epoxy resin; sin or silicone      polypropylene gum(*),polypropylene




Output current signal:        O to 20 mA

       4 to 20 mA

       potentialfree; Ra <= 500 Ohm



Limit-value switch:        1 open contact

       Permanent current <= 1A

       Switching voltage <= 250V

       Overlap +- 1% of the measuring span


Measuring ranges:.

Number of measuring ranges:        1


Standard measuring ranges:


       Measuring range/        Measuring range with

       02 vol.% in N2        suppression range

vol% of 02  vol.% of 02

       in N2        deficit

       0 to        0.6                20         to 21        0 to        1

       0 to        1                18.5         to 21        0 to        2.5

       O to        2.5                15         to 21        0 to        6

       0 to        6        ³)        11         to 21        0 to        10

       0 to        10        ³)        20         to 60

       0 to        21        (25)³)>        40         to 100

       0 to        60                90         to 100

       0 to        100 ³)        97.5 to 100


Application hints:

       1)Different measuring ranges of a unit with suppression

       range must have the same initial or end value.

       The suppression range is only realizable for binary gases

       to be measured.

                       2)Recommended scale division for measuring ranges with

                       suppression range.

                       3)Delivery with inclination-independent measuring

                       chamber as unit special fabrication.





Relative magnetic susceptibility of some gases related to oxygen = 100.


Paramagnetic gases

       Oxygen        02        +        100

       Nitric oxide        NO        +        44

       Nitrogen dioxide        N02        +        40

       Chlorine dioxide        Cl02        +        40


Diamagnetic gases

       Helium        He        -        0.06

       Hydrogen                        0.12

       Nitrogen        N2        -        0.35

       Methane        CH4        -        0.35

       Acetylene         C2H2 -        0.37

       Ammonia        NH        -        0.55

       Nitrous oxide        N20        -        0.56

       Argon        Ar        -        0.57

       Carbon dioxide        C02        -        0.61

       Ethane        C2H6        -        0.65

       Propane        C3H8        -        1.20

       Chlorine        Cl2        -        1.23

       Butane        C4H10-        1.69