德國威卡wika-FLR-F干簧式液位傳感器，適用于衛(wèi)生行業(yè)。
威卡FLR-F衛(wèi)生型液位計(jì)的應(yīng)用
適用于各類液體介質(zhì)的液位監(jiān)測
過程用水和飲用水處理、食品飲料行業(yè)、制藥業(yè)
威卡FLR-F衛(wèi)生型液位計(jì)的功能特性
為特定的過程和系統(tǒng)提供定制化的解決方案
適用范圍：
- 工作溫度：T = -80 ... +200℃
- 工作壓力：P =真空至8 MPa
- 密度范圍：ρ ≥ 400 kg/m3
可提供多種不同的電氣接口方式，過程連接方式及材質(zhì)
可提供不同輸出信號的可編程組態(tài)變送器, 如4...20mA現(xiàn)場信號、HART®、PROFIBUS® PA、FOUNDATION™總線
防爆設(shè)計(jì)（可選）
威卡FLR-F衛(wèi)生型液位計(jì)的描述
FLR型液位傳感器采用干簧電阻鏈技術(shù)，并基于磁傳導(dǎo)原理對液位進(jìn)行測量。
浮球內(nèi)磁鋼的磁力線穿過導(dǎo)管，感應(yīng)導(dǎo)管內(nèi)干簧和電阻鏈，通過三線分壓器產(chǎn)生與液位成正比例關(guān)系的電壓值。
干簧和電阻鏈排列非常緊密，從而導(dǎo)致電壓近似連續(xù)變化。根據(jù)用戶要求，可提供不同類型的觸點(diǎn)。

Model FLR-FA Model FLR-FB
Electrical connection Connection housing: Aluminium
80 x 75 x 57 mm [3.1 x 3.0 x 2.2 in] without
head-mounted transmitter
Option: Polyester, stainless steel
Connection housing: Aluminium 80 x 75 x 57 mm
[3.1 x 3.0 x 2.2 in] with head-mounted transmitter
Option: Polyester, stainless steel
Material (process connection,
guide tube, float)
■ Stainless steel 1.4435 (316L)
■ Stainless steel 1.4404 (316L)
Electropolished surface
Process connection ■ Threaded pipe connection DIN 11851, downwards, DN 50 ... DN 150
■ Clamp pipe connection DIN 32676, DN 25 … DN 100 or 1" … 4"
■ Clamp pipe connection ISO 2852, DN 25 ... DN 150
Others on request
Guide tube diameter ■ 12 mm [0.5 in]
■ 14 mm [0.6 in]
■ 18 mm [0.7 in]
Max. guide tube length L ■ 1,500 mm (guide tube diameter 12 mm [0.5 in])
■ 3,500 mm (guide tube diameter 14 mm [0.6 in])
■ 6,000 mm (guide tube diameter 18 mm [0.7 in])
Float diameter 44 ... 120 mm [1.7 ... 4.7 in]
Float selection Depending on guide tube diameter and process conditions (see page 5)
Max. operating pressure See page 5
Temperature range -20 ... +120 °C [-4 ... +248 °F]
Option:
■ High-temperature version: 120 ... 200 °C [248 ... 392 °F]
■ Low-temperature version: -80 ... -20 °C [-112 ... -4 °F]
Contact separation ■ 5 mm [0.2 in]
■ 10 mm [0.4 in]
■ 15 mm [0.6 in]
■ 18 mm [0.7 in]
Resolution ■ 2.7 mm [0.1 in]
■ 5.5 mm [0.2 in]
■ 7.5 mm [0.3 in]
■ 9 mm [0.4 in] 1)
(depending on contact separation)
Overall resistance of the
measuring chain
Depending on length and separation
Head-mounted transmitter External transmitter Head-mounted transmitter, see page 6
Tube end ■ Float limitation welded to guide tube
■ Float limitation removable (with FDA conform sealing per CFR21 Food and Drugs for guide tube
diameters 12 mm [0.5 in] and 14 mm [0.6 in])
Output 3-wire potentiometer 4 ... 20 mA
Connection cable to transmitter/
control room
Cable length max. 2,000 m, 3-wire, shielded 2-wire, shielded
Permissible supply voltage < AC 50 V
< DC 75 V
See the data sheet of the head-mounted transmitter
used
Mounting position Vertical ±30°
Ingress protection Up to IP66 or IP68 per IEC/EN 60529 (depending on version)