DE料位计、DE射频导纳液位计、DE射频导纳界面仪、DE含水仪
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美国DE Z-tronIV 系列 Z4-3001-753/Z4-1001-753/Z4-3001-762 料位计
美国DE Z-tronIV 系列 Z4-3001-753/Z4-1001-753/Z4-3001-762 料位计
料位计 原理
射频导纳是一种从电容式发展起来的、防挂料、更可靠、更准确、适用性更广的料位控制技 术，
射频导纳中导纳的含义为电学中阻抗的倒数，它由电阻性成分、电容性成分、感性成分 综合而成，
而射频即 100KHZ 无线电波谱，所以射频导纳可以理解为用 100KHZ 无线电波测量导纳
Z-tron IV 料位计 Z4 系列料位计包括 1 个传感元件,1 个电子单元及 1 套壳体, 分体型还包括 1 套 连接传感元件和
电子单元的信号电缆。
美国AMETEK Drexelbrook Z-tron IV Z4系列料位计 常用型号：
Z4-3002-753 AMETEK Drexelbrook 料位计
Z4-3002-101 AMETEK Drexelbrook 料位计
Z4-3002-762 灰斗料位计
Z4-3502-766 高温型料位计
Z4-3002-701 防腐料位计
Z4-1002-753 仓泵料位计
Z4-1002-101 AMETEK DE 料位计
Z4-1002-762 除尘器料位计
Z4-1502-766 高温省煤器料位计
Z4-1002-701 防腐型料位计
AMETEK DE Z-Tron IV 射频导纳料位计 技术指标：
Power Requirements:
AC Units - Field Adjustable:
95-145 VAC 50/60 Hz 2 Watt
215-265 VAC 50/60 Hz 2 Watt
DC Units:
24 VDC Unit: 19-29 VDC input 2 Watt
Sensitivity:
0.3pF&nbs******bsp;less
Operating Point Range:
0 - 80 pF (20 Turn Pot / 4 pF per Turn)
Extended range with external pad capacitor Pad ratio 1:1
Load Resistance:
Center to Ground 1500 Ohms
Center to Shield 750 Ohms
Shield to Ground 750 Ohms
Failsafe:
Field adjustable to either High-Level Fail-Safe (HLFS)
or
Low-Level Fail-Safe (LLFS)
Output:
DPDT relay closure
Contact Rating:
*** @ 120 Vac non-inductive
2A @ 230 Vac non-inductive
Ambient Temperature:
-40°F to 145°F (-40°C to 63°C)
Temperature Effect:
0.5pF/50°F
Line Voltage Effect:
0.2pF/20V @ 120 Vac
Stability:
0.15pF/6 mo. maximum shift
Spark Protection:
100 Amp
Mounting: (Probe Dependant)
-inch NPT (Typical)
Housing:
The standard housing meets the following classifications:
Nema 1 General-Purpose
Nema 2 Drip-Tight
Nema 3 Weather-Resistant
Nema 4 Waterproof
Nema 5 Dust-Tight
Nema 12 Industrial Use
FM approval on housing only. If agency approval is required use the Drexelbrook PXL The Point? instrument for point level control.
Time Delay:
0-60 seconds (3/4 Turn Pot) 270° Potentiometer
Approvals
FM / FMC 3810 General Purpose (Pending)
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