Item name: CAP-3022-A112L intelligent capacitance level meter
Product description:
CAP-3022 intelligent capacitance meter (liquid) is the use of radio frequency capacitance detection technology, combined with industrial grade range measurement system of temperature drift compensation technology, single material (liquid) phase medium dielectric constant change automatic compensation technology produced. It is designed for industrial environment gas (vapor) phase medium composition is relatively stable but liquid (liquid) phase medium dielectric constant change larger soluble medium liquid level, powder, particle level measurement and control occasions design.
This product by the national instrument explosion-proof safety supervision and inspection station (N E P S) certification. Intrinsically safe explosion-proof flag for E x a I C T 6 / T 5, can be used for the corresponding explosive hazardous sites in the area of I I.
Working principle
Use a (liquid) changes and measurement of relation between the capacitance changes produced by the capacitance change detection by measuring system of temperature drift compensation, phase (liquid) dielectric constant changes after compensation by the special mode of software processing, two line output and the level change is proportional to the 4 20 ~ m A analog current loop and four sets of S P S T (N O) solid state relay.
Technical characteristics
1, two wire current loop, measurement system and current loop isolation;
2, temperature drift compensation automatic measurement system;
3, physical (liquid) phase dielectric constant change automatic compensation;
4, C E certified good electromagnetic compatibility characteristics;
5, continuous measurement of liquid level, material level, interface;
6, excellent linear measurement, smaller resolution measurement unit;
7, low power consumption, no moving parts, sophisticated process assurance;
8, high temperature, high pressure, strong corrosion;
9, Chinese operating environment, easy to set, with self diagnosis.
Technical index
Working voltage: Max: 30V
Minimum: 18V (CAP-3022-R, output 3.5mA)
15V CAP-3022-S, output 3.5mA)
10V (output 22mA)
Current loop: two wire 3.5mA ~ 22mA
Fault alarm current: 3.5mA or 22mA can be set
Isolation performance: measurement system and current loop isolation
Explosion-proof grade: ExiaIICT6 (-40 C ~ 70 C)
ExiaIICT1~5 (-40 DEG C ~ 85 DEG C)
Explosion proof parameters:
Power input:
Ui=30V, Ii=100mA, Pi=0.75W
Ci=100pF, Li=10uH
Solid state relay (group):
Ui=30V, Ii=100mA, Pi=0.75W
Ci=150pF, Li=10uH
Measurement range: 0 ~ 8 meters
Measurement period: 0.5 seconds
Resolution: 0.02mm
Temperature drift: + 0.5mm (-40 C ~ 85 C)
Working pressure: Max 6MPa
Linear deviation: + (1+0.05%FS) mm
Solid state relay (CAP-3022-R):
Configuration: four group SPST (NO) solid state relay
Load voltage: 220V AC/300V DC (non explosion proof place)
DC/AC 30V (ex site)
Load current: 100mA (-40 C ~ 40 C)
50mA (-40 C ~ 85 C)
Alarm mode: "on, off alarm" optional
Five alarm modes are optional
Delay: 1 ~ 60 seconds, can be programmed independently
Medium temperature: ~150 C -150 C
Ambient temperature: -40 DEG C ~ 85 DEG C (ExiaIICT1-T5)
-40 DEG C to 70 DEG C (ExiaIICT6)
Storage temperature: -55 C ~ 100 C
Communication protocol: HART
Protection level: IP65
Electromagnetic compatibility: through the CE certification
Associated device: CAP-3000S manipulator
Typical applications
Liquid level measurement and control of various atmospheric pressure, low pressure boiler, water heater, tank and evaporator.
Chlorine, liquid C O 2 liquid level control.
Coal powder, coal ash, fossil powder and cement powder.
A variety of ingredients, medicine, industrial processing (irrigation tank, liquid level control box).
All kinds of light oil and solvent liquid level control