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12-Channel Rotary Valve for Environmental Water Quality Cod/Tp/Tn Analyzer

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Model NO.:
31BD-21-IYU/1C3
Media:
Water,Strong Acids and Alkalis, Corrosive Solvents
Temperature:
Ordinary Temperature
Actuator:
Electric
Connection Form:
1/4-28 Unf/10-30 Unf/6-40 Unf
Type:
Direct Rotation
Material:
Peek,PCTFE,Sapphire,Ceramic
Pressure:
0 ~ 0.7MPa
Valve Structure:
Step by Step Structure of Direct-Acting Piston Structure
Power Supply:
with Controller Stepper Motor
Usage:
Flow Control
Standard:
GB
Application:
Industrial Usage, Water Industrial Usage, Water Quality Online Analyzer
Number of Channels:
6,10,12,16,24 Channel
Voltage:
24V
Power:
48W
Orifice Diameter:
0.5mm,0.6mm,1mm,1.2mm
Communication Protocols:
RS232/RS485/Can/Modbus
Weight:
800g
Communication Rate:
9600dps
Trademark:
Keyto
Transport Package:
Bulk Package
Specification:
CE, RoHS
Origin:
China
HS Code:
8481804090
Product Description
1 Product Overview
31XX series multi-channel rotary valve is a product independently developed by Keyto, the main function is to achieve multi-channel switching. This series of rotary valve has a variety of model selection. Moreover, this series of rotary valves can withstand different reagents under different working conditions, and the operating life can reach more than 1 million times.
1.1 31XX Series Multi-Channel Rotary Valve Characteristic 
This rotary valve is integrated with a drive controller, which controls the operation of the stepper motor by receiving instructions from the host computer. So as to realize the fluid channel switch. There are three kinds of serial port protocol: RS232/RS485/CAN bus.
The rotary valve adopts sapphire spool, which can be applied to all kinds of corrosive liquids. The valve head is processed by PCTFE (polytrifluoroethylene), which is maintension-free.
Spool rotor rotation depends on the planetary reducer motor as the power device, high reliability.
Advanced zirconia ceramic processing technology, strict inspection procedures, unique sealing scheme, to ensure that the service life of the valve can reach more than 1 million times, without maintenance and care.
Contact with liquid medium parts of the material of good chemical resistance. Various materials can be selected to ensure the compatibility of chemical media.
1.2 Word Definition   
  1. Flow capacity CV
Also known as the flow coefficient, foreign general CV, domestic general KV, the two can be converted, are dimensionless parameters, on behalf of the liquid flow capacity of components, the actual design and use, according to the application conditions to convert into a dimensional flow reference.

--When measured, the flow rate of the medium, unit gal/min;
--Specifies the density of the water medium at 60°F,;
--Pressure difference between front and rear of element under test;
,--When measured, the density of the medium and the pressure difference before and after the front element.
Converted to the domestic general dimension, then:
Cv=0.03, which means that the flow rate of the component is 5ml/s under the condition of 25ºC and 50KPa.
 
  1. Max Response Time
From the inlet end, pass air or water with a medium of 0.25MPa or maximum working pressure difference, and input the start signal to the tested rotary valve. Rotate from any channel to the channel corresponding to this channel at 180°. The outlet of the rotary valve is measured by the pressure sensor. At the same time, the interval time from the moment the signal is sent to the maximum pressure rise from the instant the signal is sent by the test instrument with fast response time, and the arithmetic average of the values corresponding to different corresponding channels is the maximum response time. The same is true for the response time test of switching to another specified channel.
  1. Inner Volume
The volume of the inner flow channel containing the cavity from the inlet port to the outlet port of the rotary valve in the closed state.
.


Multi-channel rotary valve parameter table: 
Product nameSpecification parameter
Number of channels6-Channels10-Channels12-Channels16-Channels24-Channels
Contact liquid materialPCTFE, Sapphire, CeramicPEEK, Sapphire, Ceramic
Initial position detectionSet to automatically detect the initial position after power on
Port to port volume27ul27ulUpper runner:
25.5ul
Lower runner:24ul		Upper runner:33.4ul
Lower runner:28.5ul		4.6ul
Runner diameter1.2mm1.2mm1.0mm1.0mm0.5mm
Operating temperature 0-50ºC
Operating humidity≤80%
Valve head flow temperature0-80ºC
Connection1/4-28 UNF, 10-30 UNF, 6-40 UNF
Replaceable partsCan be replaceable valve head
Transposition performanceMultiple locations, random start
Optional driver boardNo
Switching time≤2.5S/circle, 24-channel rotary valve ≤2S/circle
Maximum driving force/torque2.1N/M
Available communication protocolsRS232/RS485/CAN Bus
Communication rate9600dps
Device address settingSerial port settings
Device parameter settingSerial port settings
Overall dimensionsSee 2.3.1
Input powerDC24V±10%
Maximum power48W
Pressure6-16 channels: 0-0.7MPA 24 channels: 0-0.3MPa
Weight6-12 channels≈0.78kg 16-24 channels≈0.93kg

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