Description

~一、Product overview and working principle
WS***1 online density meter is a kind of intelligent two-wire transmitter our company independent research and development production, it uses the principle of differential pressure to measure the density of flowing liquid or static liquid. It can be installed on the opening container and sealing container, or directly mounted on the pipeline, sanitary type transmitter fixed using clips for easy disassembly. Its touch liquid surface is standard *2Ra. All models conform to 3A standard, no surface cracks, a good seal for food and beverage.
The electronic circuit schematic diagram
二、Application field
Type WS***1 on-line densimeter is applied to all walks of life
The sugar industry and the wine industry：
Squeeze juice, syrup, grape juice, lime juice density, alcohol GL degrees, molasses, hexane / ethanol interface, etc.
Dairy industry：
Condensed milk, lactose, cheese, dry cheese, lactic acid, etc.
Mining：
Coal, potash, brine, phosphate, calcium compound, limestone, copper, gold, etc.
Refining:
Lubricants, fragrances, oil, vegetable oil, etc
Food processing:
Tomato juice, grape juice, lemon juice, tomato sauce, molasses, vegetable oil, fruit syrups, jellies, jams, etc.
Pulp and paper industry:
Black paste, green pulp, pulp washing, evaporators, white pulp, caustic alkali, etc.
Beverage Processing:
Beer, soft drinks, wine, instant coffee, malt, etc.
Chemicals:
Gas, oil and gas water, kerosene, lubricants, oil / water interface, etc.
Petrochemical:
Gas, oil and gas water, kerosene, lubricants, oil / water interface, etc.
Ships:
Mud, water, sodium and other recycling, etc.
三、Technical parameters and performance indicators
Technical parameters
Measuring range：0.5~5 g/ cm³
Precision：±0.***4 g/ cm³
The output signal：Two-wire system 4~*0mA, superposition of digital signals. (HART TM protocol)
Display: four and a half numbers or five letters LCD digital
Engineering units：g/ cm³、k g/ cm³
Power supply: *2 ~ *0 VDC
Explosion-proof performance: explosion-proof, waterproof casing; Intrinsically safe, certified CEPEL/DMT and FM (NEMKO and 3 a certification is under way)
Protection grade: IP*5
Zero and span adjustment
Through digital communication adjustment, independently of each other
Temperature Range
Ambient temperature:**0~*5℃
Process temperature: **0~**0℃
Storage temperature: **0~**0℃
Digital temperature: **0~*0℃
Failure warning
If the sensor or circuit malfunction, self-diagnosis function will be automatically output to 3.6 or *1.0mA (the user can set beforehand)
Start-up time
Start within five seconds after the power is turned
Volume change
Does not exceed 0.*5 cm³
Static pressure range
7Mpa () *0kgf/cm2 (***0 PSI)
Humidity Range
0~**0%RH
Damping adjustment
0 to *2 seconds (not including the inherent response time of the sensor 0.2 seconds) (by adjustment of the digital communication)
Configuration
Through digital communications (HART TM protocol)
Performance indicators
Reference conditions : Range start from zero, The temperature of *5℃,atmospheric pressure, the **-volt power supply, silicone oil, the isolation diaphragm is **6L stainless steel.~ data tuning range is the same as the range of upper and lower limits.
Range 
Precision Environment temperature effect (per *0 ℃) Stability
(3 months) Zero static pressure
（kg/ cm³）
1
2
3 0.***4g/ cm³（±0.1°8x）
±0.***7 g/ cm³
±0.***6 g/ cm³ 0.**3×*0^(*3)
0.**3×*0^(*3)
0.**1×*0^(*3) 0.**1×*0^(*3)
0.**3×*0^(*3)
0.**1×*0^(*3) 0.**1×*0^(*3)
0.**4×*0^(*3)
0.**7×*0^(*3)
（1）Precision data contains the effect of linearity, hysteresis and repeatability.
（2）This is a system error, it can be calibrated to eliminate at the working static pressure state.
Impact of power supply
±0.**5% calibration range, V
Installation position    
No impact on the range
Effects of electromagnetic interference   
Meets C**1 standards
Physical indicators
Electrical Interface
1/***4NPT, Pg*3.5 or M*0×1.5（The metric system）
Process Interface
Industrial type：**4 stainless steel   Tri-clamp 4”
Sanitary type: **6 stainless steel   flange   ANSI B*6.*4”
Touch liquid part
**6L stainless steel, Hastelloy C**6
Touch liquid O ring (Sanitary type)
Nitrile rubber (Buna N), Fluoro rubber ( Viton TM) or Teflon
No touch liquid part
Transmitter housing
Perfusion aluminum (polyester coating) or **6 stainless steel   (Protection level: NEMA 4X，IP*7)
Filling liquid
Silicone oil (DC**0/*0, DC**4), Syltherm **0 or Glycerin and water
The sealing ring (shell)
Nitrile rubber (Buna N)
Signs
**6 stainless steel  
Installation
Side flange or top flange installation method
Weight
8kg (*8 Ib) Sanitary type
*2kg (*6 Ib) Industrial type
Hastelloy is the registered trademark of Cabot Company.
Viton and TELLON is the registered trademark of Dubang Company.
Hart is the registered trademark of Hart Foundation

四、The circuit connection
Density transmitter circuit connection diagram
2.1 Analog field wiring connections
Positive power supply      Negative power supply       Unavailable
The connection methods of non-intelligent field wire      Indicator
2.2 Standard intelligent field wire connections
Positive power supply     Negative power supply   
Communications connect the positive
HART Communicator     
Signal loop may be grounded or floating at any point
Fluid direction