Wika TR21-C Uživatelský manuál stáhnout pdf (Strana 8)

14006814.01 05/2011 GB/D/F/E

8 WIKA operating instructions model TR21

3. Specications

Output signal Pt100

Temperature range Measuring range -50 ... +150 °C, -50 ... +250 °C

Measuring element Pt100 (measuring current: 0.1 ... 1.0 mA) standard measuring resistor

Pt100 (measuring current: 0.1 ... 1.0 mA) face-sensitive measuring

resistor

Connection method 3-wire

4-wire

Sensor tolerance value

per DIN EN 60751

Class B

Class A

Class AA

Output signal 4 ... 20 mA

Temperature range Measuring range -50 ... +150 °C, -50 ... +250 °C

Measuring element Pt100 (measuring current: 0.5 mA) standard measuring resistor

Pt100 (measuring current: 0.5 mA) face-sensitive measuring resis-

tor

Connection method 3-wire

Sensor tolerance value

2) 4)

per DIN EN 60751

Class B

Class A

Class AA

Measuring span minimum 20 K, maximum 300 K

Basic conguration

Measuring range -50 ... +150 °C, -50 ... +250 °C depending on the

selected temperature range, other measuring ranges are adjustable

Analogue output 4 ... 20 mA, 2-wire

Measuring deviation

per DIN EN 60770, 23 °C ±5 K

0.2 % (Transmitter)

Linearisation linear to temperature per DIN EN 60751

Linearisation error ±0.1 %

Switch-on delay, electrical < 10 ms

Signalling of sensor burnout congurable: NAMUR downscale < 3.6 mA (typically 3 mA)

NAMUR upscale > 21.0 mA (typically 23 mA)

Sensor short-circuit

not congurable, generally NAMUR downscale < 3.6 mA (typically

3 mA)

Load R

≤ (U

- 10 V) / 0.023 A with R

in Ω and U

in V

Eect of load ± 0.05 % / 100 Ω

Power supply DC 10 ... 35 V

Max. permissible residual ripple 10 % at 24 V / maximum 300 Ω Load

Power supply input protected against reverse polarity

3. Specications

Readings in % refer to the measuring span

For a correct determination of the overall measuring error, both sensor and transmitter measuring deviations have to

be considered.

The small design of the face-sensitive measuring resistors leads to reduced heat dissipation with short insertion lengths.

Available for temperature range -50…+150 °C in Classes A and B.

Face-sensitive measuring resistors are generally used for thermowell insertion lengths smaller than 11 mm.

For detailed specications for Pt100 sensors, see Technical Information IN 00.17 at www.wika.com

The temperature transmitter should therefore be protected from temperatures over 85 °C

For measuring spans smaller than 50 K additional 0.1 K

± 0.2 % for measuring ranges with a lower limit less than 0 °C

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 75 76

Komentáře k této Příručce

Žádné komentáře

Wika TR21-C Uživatelský manuál Strana 8

Komentáře k této Příručce

Související produkty a manuály pro Měřící nástroje Wika TR21-C