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Alpha TDS 190 เครื่องวัดและควบคุมค่าทีดีเอสAlpha TDS 190 เครื่องวัดและควบคุมค่าทีดีเอส

Alpha TDS 190/Thermo Scientific TDS Controller/Transmitter

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Alpha TDS 190 / Thermo Scientific เครื่องวัดและควบคุมค่าทีดีเอส Total Dissolved Solids Controller/Transmitter เหมาะสำหรับวัดค่าในน้ำดื่ม การปลูกพืชไร้ดิน สปาฯ
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เครื่องวัดและควบคุมค่าทีดีเอส Alpha TDS 190

Total Dissolved Solids Controller/Transmitter

Product Features

Alpha TDS 190 SeriesMeasure from pure water to electroplating rinse tank water with Thermo Scientific’s Alpha TDS 190. Reliable with straightforward process control, these control/transmitters measures with up to ±1 % full scale accuracy across eight TDS ranges.

For faster and more convenient control, choose the Alpha TDS 190 which allow direct access to the set-point adjustment and calibration menus.

:: Measures up to eight ranges at ±1 % full range accuracy  

:: Easy push-button calibration. Controller freezes data transmission and relay activities during calibration and maintenance  

:: Selectable temperature coefficient for higher TDS accuracy  

:: Two SPDT relays allows high/low set-points limit control. Each relay comes with their independent hysteresis to prevent relay-chattering  

:: Choice of automatic or manual temperature compensation. Three-wire system compensates error due to cable resistance  

:: Full-scale 4 to 20 mA galvanically isolated current output for process control   

:: 85 to 250 VAC. 50/60 Hz or DC variable input allows controller to be used with a wide range of supply voltages

Applications

TDS 190: Ideal for drinking water, monitoring and control, hydroponics and aquaponic solution balance and control, pools and spa hardness and salinity control.

Specifications

Product Specification Description
Conductivity
Range ... to 10.00 ppm ; ... to 100.0 ppm ; 
... to 1000 ppm ; ... to 5.00 ppt ; 
... to 10.00 ppt ; ... to 100.0 ppt
Resolution 0.01 ppm ; 0.1 ppm ; 
1 ppm ; 0.01 ppt ; 
0.1 ppt
Cell Constant 0.1 ; 1 ; 10
Relative Accuracy ±1 % of full scale
Temperature
Range -10 to 110 ºC
Resolution 0.1 ºC
Accuracy ±0.5 ºC
Sensor Pt100; 2 or 3 wire
Compensation Auto/manual (0 to 50 ºC)
Coefficient 0.0 to 5.0 %
Normalisation 10.0 ºC to 30.0 ºC
TDS
Factor 0.40 to 1.0
Set Point And Controller Functions
Set Point 1 (SP1)/ 
set Point 2 (SP2)
... to 10.00 ppm or ... to 100.0 ppm or 
... to 1000 ppm or ... to 5.00 ppt or 
... to 10.00 ppt or ... to 100.0 ppt
Switching Conductivity Hysteresis 0 to 10 % of full scale
Switching TDS Hysteresis 0 to 10 % of full scale
Function Limit control
Contact Outputs 2 SPDT relays
Switching Voltage/
Current/Power
Max. 250 VAC / max. 3 A / max. 600 VA
Electrical Data and Connections
Transmitter Function 4 to 20 mA scalable outputs for Conductivity, galvanically isolated
Load 200 Ohm
Conductivity/TDS Input 2-pin terminal
Connection Terminal 3-pin, 7-pin & 9-pin terminal, detachable blocks, 1 fixed connector
Display
LED 7 segments display
Power Supply
Input 85 to 250 VAC, 50/60 Hz
Main Fuse 250 mA, anti-surge, S504 Bussman
Rated Input Current (Max.) 100 mA
Insulation Category II
EMC Specifications
Emitted Interference According to EN 61326
Immunity To Interference According to EN 61326
Environmental Conditions
Operating Temperature Range -10 to 50 ºC
Max. Relative Humidity 10 to 95 % (non-condensing)
Mechanical Specifications
Dimensions (WxHxD) 96 x 48 x 150 mm
Weight 300 g (unit) / 350 g (packed)
Ingress Protection IP50

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