Water Monitoring Instrument

Universal Transmitter
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Description

 

 

GDC-01/02, Single Channel or Dual-channels    Terminal

GDC-04/06/08, Multiple channels Terminal

 

 

GDC-H, Hand held Terminal

GDC-Ex, Explosion proof Terminal


GDC (General Displayer & Controller) series terminal are designed for continuous      measurement with Cross Smart Sensors in a general purpose industrial or municipal environment. GDC terminals have the ability to extend network by intelligent sensors with RS485 output(Modbus RTU protocol). GDC terminals supply power to sensors in the meantime of getting signals. A plug and play function can be expected for those sensors in our recommended list, that means if you plug an intelligent sensor into a GDC and it will automatically configure to any of the listed measurements. GDC terminals can be expanded to work with any sensors with analogue or digital outputs for customized configuration.

 The advantages

Universal Terminals: Use  with Cross Smart Sensors for measurements of water analyzing, Gas analyzing and  process control. 
 Advanced Display: -40°C  tolerance brighter OLED screen for GDC-01/02, GDC-H and GDC-Ex. Colorful touch  screen LCD for GDC-04/06/08 
 Multiple Channels: Simultaneous Acquisition one  or two sensors for GDC-01/02, GDC-H or GDC-Ex; GDC-04/06/08 are for 4, 6 or 8  Channels. 
 4-20 mA output with Optional  HART and Alarm Relays: Flexible configurations for all  applications. 
 GDC-Ex Explosion Proof  Terminal: Using a magnetic screwdriver through the  display window to set up the GDC -Ex, eliminates the need to open the enclosure  cover 
 USB Port attached  with GDC-H and GDC-04/06/08 for easy data log. 
 Optional Wi-Fi for GDC-04/06/08, can be connected wirelessly by Pad, smart phones and  computers for remote display and operations.

  •  Features & Benefits

  • (1) Use with Cross Smart Sensors for measurements of water analyzing, Gas analyzing and process control.

    (2) Advanced Display: -40°C tolerance brighter OLED screen.

    (3) Multiple Channels: Simultaneous Acquisition one or two sensors for GDC-01/02

    (4) 4-20 mA output with Optional HART and Alarm Relays: Flexible configurations for all applications.

  •  1.3 Performance

    Measurement Parameters: PH,ORP,Conductivity,DO,turbidity,Ammonia,nitrogen,residual chlorine,liquid level,flow ,SDT toxic gas and so on 2

    Accuracy: ±0.1%F.S.

    Repeatability: ±0.1%.

    Linearity: ±0.05%.

    Response time: T90<1s

    Power: 24VDC (13.5~50VDC), 110/220VAC@50Hz/60Hz

    Display: OLED Display Screen It shows the information of measured parameters, measured value, temperature

    The operating environment: Temperature: -40~70 ° C (-40~158 ° F), Humidity:0~95%RH no condensation

    Input: 1 Analog input (4~20mA), 2 Digital input: RS485 Modbus

    Output: Analog output: 4~20mA linear outputs, HART(Option)

    Digital output: RS485 Modbus , PROFIBUS-DP protocol (option)

    Pulse output: only for flow meter

    Relay: Two SPDT relays :5A@250VAC/5A@30VDC

    Compensation: Atmosphere compensation for dissolved oxygen and pressure measurement

    Protection: IP66

    Weights: 1.76lb. (0.8kg)


SA-9 Spectra Analyzer
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 Description

SA-9 spectrometer probes use standardized spectral algorithms taking in to account the complete absorption spectrum of the water (200 - 750 nm in case of UV/Vis probe) for determination of organic sum parameters such as COD, TOC, BOB and DOC. Furthermore, SA-9's spectral compensation for light absorbing particles and turbidity provides a unique method that allows the monitoring of dissolved organic substances without the need for sample pre-treatment.

 

The validated spectral calibrations, that use multiple wavelengths for monitoring of each parameter, allow much more accurate and robust measurements than with where single wavelength measurement.

 

Using field special calibrations, it is even possible to distinguish various fractions of organic carbon groups using specific features of the absorption spectrum. In particular relations between particular parts of the spectrum and (bio) degradability or organic substances have been established. Such relations allow optimization of the treatment processes used to reduce organic contaminations, for example biological processes in waste water treatment plants. In this latter case, optimization is made possible by the on-line monitoring of the amount of organic substances that can be degraded by micro-organisms (BOD). Using this knowledge, the amount of waste that is fed into the treatment plant can be managed in such a way that the activated sludge is able to most efficiently reduce the organics or alternatively nutrient dosing can be controlled which ensures an optimal concentration at all times (no under or over-dosing).

 

 Measuring Scale & Optic Path Length

Application

WWTP
     Influent/    Sewer

WWTP
     Aeration

WWTP
     Effluent

River water

Drink water

Path length

2mm

5mm

1mm

5mm

5mm

35mm

NO3-N mg/l

0.5-10

 

0.1-20

0.2-25

0.3-70

0.1-10

COD mg/l

25-3750

10-1500

 

2-500

 

 

BOD mg/l

20-1250

10-500

 

2-300

 

 

TOC mg/l

 

 

 

 

1-150

0.1-20

DOC mg/l

 

 

 

 

0.5-75

0.1-10

SAC25 Abs/m

5-750

2-300

 

2-300

2-300

0.1-40

TSS mg/l

25-2500

10-1000

100-8000

2-500

 

 

Turbidity NTU/FNU

 

 

 

 

5-1400

0.5-150

O3 mg/l

 

 

 

0.1-10

 

0.1-10

H2S mg/l

0-25

0-50

 

 

 

 

System

UV-Vis    Spectrum (190~720nm)

Measuring    principle

Spectral    analysis

Optical path    length

2/5/20/35 mm

Light source

Xenon flash    light

Accuracy

±2% of reading

Resolution

±0.5% of scale

Temperature    range

-10°C up to    +50°C

  •  Technical

  •  Interface

    RS232, RS485,    9600; div. protocols, e.g. Modbus

    Modbus for the    connection with other sensors

    USB

    Ethernet, 10    MB/s, div. protocols, e.g. TCP/IP

    GSM, GPRS


 

  •  Parameter

    SAC254

    COD

    TOC/DOC

    NO3-N

    SS

    Phenol

    O3

    H2S

    Color    Hazen-t/f

     


Cholrine Sensor
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    •  Description

    • The FC7 is a panel mounted, ready to use Free Chlorine Sensor. It is designed to monitor free chlorine in drinking water, rinse water, cooling water or other fresh water samples from 0.05~10ppm Cl2 as the standard range or 0.01~5.00ppm with the low range sensor. The FC7 is compliant with EPA method 334.0 for measuring drinking water.Free chlorine exists in solution as pH dependent ratio of hypochlorous acid (~100% at pH 5) and hypochlorite ion (~100% at pH 10). Free Chlorine is the sum of the Hypochlorous acid and Hypochlorite ion in the sample. The Free Chlorine Sensor measures only the hypochlorous acid component of the free chlorine and the analyzer calculates the balance using either the measured or a user defined fixed value. The use of the pH sensor provides accurate compensation for samples between pH 6 and pH 9.5 and eliminates the need for an expensive sample conditioning system to control the pH of the solution.

       

    •  Specification

    Range

    (0.05~5.00/10.00)mg/l,    ppm

    Accuracy

    0.01mg/l    (0~0.5)mg/l, ppm
         0.02mg/l    (0.5~2)mg/l, ppm
         0.1mg/l    (2~5)mg/l, ppm
       0.2mg/l    (5~10)mg/l, ppm

    Resolution

    0.01mg/l

    Repeatability

    ±1%FS

    Auto Temp. compensation

    0~65°C

    pH compensation

    5~9pH

    Electrodes

    Cathode Pt, Anode Cu

    Sample flow rate

    2.5l/min

    Operate Pressure

    1~14.7bar

    Operate Temp.

    0~65°C

    Response Time

    T90<3s

    Water Proof

    IP68

    Temp. Sensor

    Pt100

    Temp. Range

    0~65°C

    Temp. Accuracy

    ±1°C

    Output

    RS485 Modbus RTU

    Material of housing

    PP

    Model

    Suffix Code

    Description

    Flow range

    L

     

     

    Low range for 5ppm

    H

     

     

    High range for 10ppm

    PH compensation

    N

     

    No PH compensation

    PH

     

    With PH compensation and output

    Cable length

    C10

    10&rdquo; cable

    C20

    20&rdquo; cable

    C30

    30&rdquo; cable

    XXX

    Other length contact factory

    •  Model Selection


    Dissolved Oxygen
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    • Dissolved Oxygen

      DO7: OPTICAL DISSOLVED OXYGEN

       
       Description
    • The DO7 sensor is based on luminescent  optical technology. The Sensor is approved by the ASTM international Method  D888-05. Without calibration requirements and thanks to an ultra-low power  technology, the DO7 sensor meets the demands of field works and short or long  term campaigns.

      Without oxygen  consumption, this technology allows you an accurate measure in all situations  and especially in very low oxygen concentrations.

      The Intelligent DO7 sensor stores calibration  and history data within the sensor. This allows you a &ldquo;plug and play&rdquo; system  without re-calibration. Thanks to the Universal Modbus RS485 protocol, the DO7  sensor can be connected to all devices commonly used (Data logger, GDC,  Automat, Remote System…).


    •  

    •  Specification

    Measure principle

    Optical measure by luminescence

    Range

    0.00~20.00ppm, 0.00~20.00mg/l, 0~200%

    Resolution

    0.01

    Accuracy

    ±0.1mg/l, ±0.1ppm, ±1%

    Respond Time

    T90<60s

    Operate Temp.

    0~50°C

    Store Temp.

    -10~60°C

    Protection

    IP68

    Pressure

    5bar

    Weight

    0.45kg(Sensor & 3 meters cable)

    Material

    316SS

    Digital output

    Modbus RS485

    Power

    5~12VDC

    Consumption

    Standby 25μA Average RS485(1 measure/s):    4.4mA

    •  Wiring



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