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德國(guó)wikaRLT-3000干簧電阻鏈?zhǔn)揭何粋鞲衅?wika代理
威卡RLT-3000液位計(jì)的應(yīng)用
機(jī)器制造中液體的液位和溫度測(cè)量
液壓機(jī)、壓縮機(jī)、制冷系統(tǒng)等設(shè)備的控制和監(jiān)控
威卡RLT-3000液位計(jì)的功能特性
適用介質(zhì)： 油、水、柴油、制冷劑和其他液體
液位：電流輸出4 ... 20 mA
溫度：Pt100、Pt1000，精度等級(jí)：B
威卡RLT-3000液位計(jì)的描述
RLT-3000液位傳感器帶溫度信號(hào)輸出可以同時(shí)測(cè)量液位和液體溫度，其采用不銹鋼材質(zhì)，適用多種介質(zhì)，如油、水、柴油、制冷劑。
測(cè)量原理
浮球內(nèi)磁鋼的磁力線穿過(guò)導(dǎo)管，感應(yīng)導(dǎo)管內(nèi)干簧和電阻鏈，通過(guò)內(nèi)部變送器將其轉(zhuǎn)換為4..20mA模擬信號(hào)，輸出信號(hào)與液位成正比例關(guān)系。
溫度測(cè)量：導(dǎo)管底部安裝溫變電阻。

Level sensor,
model RLT-3000
Level Temperature
Measuring principle Reed-chain technology with optional analogue amplifier Pt100 or Pt1000 measuring resistor
Measuring range The measuring range M is determined from the selected
guide tube length L and the position of the 100 % mark.
For dimensions see drawing
■ Pt100
■ Pt1000
Guide tube length L 150 ... 1,500 mm [6 ... 59 in], greater lengths on request
Output signal Current output, 4 ... 20 mA, 2-wire
Power supply: DC 12 ... 32 V
Load in Ω: ≤ (power supply - 12 V) / 0.02 A
■ Pt100, 2-wire
■ Pt1000, 2-wire
Accuracy ■ 24 mm [0.9 in] 1)
■ 12 mm [0.5 in] 2)
■ 10 mm [0.4 in] 3)
■ 6 mm [0.2 in] 2)
■ 3 mm [0.1 in] 2)
For reed-chain technology, the accuracy corresponds to
the resolution.
Class B per DIN EN 60751
Mounting position Vertical ±30°
Process connection ■ G 1, installation from outside
■ G 1 ½, installation from outside
■ G 2, installation from outside
■ Flange DN 50, form B per DIN 2527/EN 1092, PN 16, installation from outside
Material
Wetted Process connection, guide tube: Stainless steel 1.4571 (316 Ti)
Float: See table on page 3
Non-wetted Case: Stainless steel 1.4571 (316Ti)
Electrical connection: See table below
Permissible temperatures
Medium -30 … +100 °C [-22 … +212 °F]
Ambient -30 … +80 °C [-22 … +176 °F]
Storage -30 … +80 °C [-22 … +176 °F]