Capacitance Type Level Meter

Product overview

Based on the admittance principle, two pole plates of a capacitor are formed by the probe and the container wall

inside the container, the air between the probe and the container wall as well as the insulating layer of the probe itself

constitutes the dielectric material of the capacitor, when the material inside the container rises, part of the air in the

capacitor dielectric material is replaced by the material, because all kinds of materials (dielectric constant>1) are different

from the air (dielectric constant=1) dielectric constant, so the capacitance and the total impedance change with it, this

change is measured by the circuit and converted into a linear 4-20MA current signal output through an amplifier and

continuously tracked, converted and output the current signal.

Product Features

Power supply: 24VDC±2.4VDC.

Scale range: hard rod 0.2m~3m, soft cable

3M~20M.

Output signal: 4-20mA 2-wire system.

Accuracy level: ±0.5% FS.

Liquid contact material: 304+PTFE.

High operating temperature 30°C~250°C.

Operating pressure 0.1 MPa~4.0 MPa.

Continuous measurement of the level of

almost all strongly and weakly corrosive

medium.

02

产品特点

01

Productoverview

产品概述

电容式物位计

8 质物位进行连续测量。

能对几乎所有强、弱腐蚀介

7 工作压力0.1 MPa~4.0MPa。  

6 工作温度高30℃~250℃。

5 接液材质： 304+PTFE。

4 精度等级：±0.5%FS。

3 输出信号：4-20mA 两线制。

2 软缆3M～20M。

量程范围：硬杆0.2m～3m，

1 供电电源：24VDC±2.4VDC。

变化，这一变化被电路测量后，通过放大器输换成线性4-20MA电流信号输出并连续跟踪、测量、转换、输出

各种物料（介电常数>1）均有不同于空气（介电常数=1）的介电常数，所以该电容的电容量以及总阻抗也随之 本身的绝缘层构成该电容的介电材料，当容器内物料上升，该电容介电材料中的部分空气被物料所取代，因为

基于导纳原理，由容器内的探头和容器壁构成一个电容的二块极板，由探头与容器壁之间的空气以及探头

89

Product

BAIC GROUP

Power supply: 24VDC±2.4VDC.

Scale range: hard rod 0.2m~3m, soft cable

3M~20M.

Output signal: 4-20mA 2-wire system.

Accuracy level: ±0.5% FS.

Liquid contact material: 304+PTFE.

High operating temperature 30°C~250°C.

Operating pressure 0.1 MPa~4.0 MPa.

Continuous measurement of the level of

almost all strongly and weakly corrosive

medium.

电容式物位计

Product Form and Description

· Virtually unaffected by pressure, temperature, humidity and

other factors on the measurement.

· Explosion-proof design, suitable for use in explosive

environments.

· This liquid level meter is not suitable for the detection of

highly viscous medium, such as melted asphalt.

· Intrinsically safe level: EXIAIICT4-CT6.

· Flame-proof level: EXDIICT4-CT6.

· Protection level: IP65.

· Electrical interface: M20*1.5, NPT1/2\".

Flange

Auxiliary

electrode Probe

04

产品选型表

挡片

探头

法兰

电极

辅助

电极

辅助

重锤重锤

挡片

探头

法兰

双杆式∮14 单缆式∮8/∮ 双缆式∮8/∮

适用：导电容器 适用：绝缘容器 适用：导电容器 适用：绝缘容器

单杆式∮14

03

产品形式及说明

a 电气接口：M20*1.5、NPT1/2\"。

a 防护等级：IP65O

a 隔爆等级：EXdiiCT4-CT6O

a 本安等级：EXiaIICT4-CT6O

a 本液位计不适用于高粘稠介质的检测，如熔化的沥青O

a 防爆设计，适合爆炸性环境使用。 <

a 几乎不受压力、温度、湿度等因素对测量的影响O

90

Product

BAIC GROUP

Capacitance Type Level Meter

Single-rod type Double-rod type Single-cable type Double-cable type

Retainer

Flange

Auxiliary

electrode

Probe

Retainer

Application: Conducting container Application: Insulating container Application: Conducting container Application: Insulating container

Product Selection Table

14 14 8/ 28 8/ 28

4． 注意容器内是否有搅拌/是否带防波管

． 注明实用介质

Protection/

explosion

-proof level

Overall copper and

zinc prohibited

3

2． 注意容器是否绝缘（选择单/双探头）

1． 注意介质是否导电

_ 订货须知：

被测介质

金属罐壁

绝缘电极

4mA

20mA

特殊注释 jb 整体禁铜锌 ts 特殊备注

测量范围 标注：如800MM,1000MM

HART（二线制）

MIDBUS/RS485（四线制）

无附加

E

W

B

附加通讯

带防波管

不带防波管

g

N 附件

≤250℃

≤150℃

g

w 过程温度

单缆式 双缆式

单杆式 双杆式

b1 b2

A1 a2 传感器形式

1.6MPA 4.0MPA

0.6MPA 2.5MPA

2 4

1 3 过程压力

电容式物位计（分体型）

其它规格备注

DN100法兰连接

DN80法兰连接

DN65法兰连接

DN50法兰连接

DN40法兰连接

DN32法兰连接

粉尘型EXTBIIICT80℃ DB

304+烧结四氟（≤250℃）

NPT1\"螺纹连接

本安型EXIAIIBT4-CT6

304+PTFE（≤150℃）

G1\"螺纹连接

隔爆型EXDIIBT4-CT6

4-20MA（带显示）

304+PP（≤70℃）

卫生型卡箍连接

非防爆

4-20MA（不带显示）

0

9

8

7

6

5

4

T

f3

2N

C

F2

2

b

B

f1

1

P

A

接液材质

过程连接

防护/爆等级

输出信号

BSUB

BSUB 电容式物位计（一体型） 产品工艺图

91

Product

BAIC GROUP

Capacitance type level meter(integrated type) Product Process Diagram

Capacitance type level meter (split type)

Output

signal

4-20MA (without display)

4-20MA (with display)

Insulated

electrode

Metal tank wall

Measured medium

Process connection

Process temperature

Additional communication

Accessories

Measurement range

Special annotation

Sensor form

Liquid contact material

Process pressure

Non-explosionproof

Flameproof EXDIIBT4-CT6

Intrinsically safe EXIAIIBT4-CT6

Dust type EXTBIIICT 80°C DB

Sanitary clamp connection

G1\" threaded connection

Thread connection

DN32 flange connection

DN40 flange connection

DN50 flange connection

DN65 flange connection

DN80 flange connection

DN100 flange connection

Other specification notes

304+sintered PTFE(≤250°C)

Single-rod type

Single-cable type

Double-rod type

Double-cable type

No add-on

MIDBUS/RS485 (4-wire system)

HART (2-wire system)

Without anti-ripple tube

With anti-ripple tube

Label: e.g. 800MM,1000MM

Special note

· Ordering Information

1. Note whether the medium is electrically conductive

2. Note whether the container is insulated (select

single/double probe)

3. Specify the practical medium

4. Note whether there is stirring/anti-ripple

tube in the container