THERMOVAC TTR 911 - PB Profibus

THERMOVAC TTR 911 - PB Profibus

Display range      mbar (Torr)

5 x 10-5 to 1000 (3.75 x 10-5 to 750)

Measurement uncertainty (N2)

mbar (Torr)

5 x 10-4 to 1 x 10-3 (3.75 x 10-4 to 1 x 10-3), ± 50% of the measured va¦ue

mbar (Torr)

1 x 10-3 to 100 (1 x 10-3 to 750), ± 15% of the measured va¦ue

mbar (Torr)

100 to 1000 (75 to 750), ± 50% of the measured va¦ue

Principle of measurement

Therma¦ conductivity acc. to Pirani

Supply voltage    V DC

+15 to +30, typ. 24  V

Power consumption

without Fieldbus       W

<= 2.5

Profibus                   W

<= 3

DeviceNet           W

<= 3

Storage temperature range             °C

-20 to +65

Nominal temperature range            °C

+10 to +50

Type of protection

IP 40

Dimensions (H x W x D)             mm

See dimensional drawing

Weight, approx.                         kg (lbs)

0.23 to 0.25 (0.51 to 0.55)

Sensor

Exchangeable sensing cell

Filament

Tungsten (TTR 911) / A¦2O3 coated tungsten (TTR 911 CC)/nicke¦ (TTR 916)

Vacuum connection                    DN

16 ISO-KF

Degassing temperature, max.     °C

80 at the flange

Dead volume, approx.               cm3

4.7

Materials in contact with the medium

Vacuum connection

Stain¦ess stee¦ 1.4435

Filament

TTR 911: tungsten, TTR 911 CC: Al2O3 coated tungsten, TTR 916: nickel

Vacuum feed through

Glass

Orifice

Stain¦ess stee¦ 1.4301

Further materials

Al2O3, Ni, NiFe, stain¦ess stee¦ 1.4301

Overpressure rating (abs.)         bar

5

Signal output (Ra > 10 kV)

0 to 10 V

Measurement signal

0.61 to 10 V   1.286 V/decade

Error signal

0 to 0.5

Switching threshold

Semiconductor relay contact, normally open

Adjustment rangembar (Torr)

5 x 10-5 to 1000 (3.75 x 10-5 to 750)

Hysteresis

Approximate¦y 10% of the setup pressure va¦ue

Reaction time            ms

< 30

Switching capacity

< 30 V AC/DC, <= 0.3 A

Status indicators

Operation indicator (power): LED green; error: LED red Switching threshold (enabled): LED green

Electrical connection

FCC-68 socket, 8-way with shield

Cable length, max.             m

100 (for the FCC connection),

different maximum cable lengths apply to the Fieldbus interfaces