Liquid Analysis – บริษัท สยามเครื่องวัด จำกัด https://www.siam-instrument.com จำหน่ายเครื่องมือวัดคุมอุตสาหกรรมทุกชนิด รับออกแบบ ติดตั้ง ปรับปรุง สอบเทียบ ให้คำปรึกษา แก้ปัญหาเกี่ยวกับงานระบบควบคุมการผลิต ระบบควบคุมอัตโนมัติ PLC ระบบหล่อเย็น ภายในโรงงานอุตสาหกรรม ออกแบบงาน CNC INSTRUMENT , Fitting แบบต่างๆ ผลิตภัณฑ์ เครื่องมือวัดระบบควบคุม ยี่ห้อ DX Electronics มีสินค้าหลากหลาย เช่น Pressure transmitter , Level gauge transmitter , Magnetic flow transmitter , Ultrasonic flow transmitter , Vortex flow transmitter , Coriolis mass flow , Ultrasonic Level Transmitte Mon, 30 Mar 2026 09:46:38 +0000 en-US hourly 1 https://wordpress.org/?v=4.9.6 https://www.siam-instrument.com/wp-content/uploads/2018/06/logo-1-100x100.png Liquid Analysis – บริษัท สยามเครื่องวัด จำกัด https://www.siam-instrument.com 32 32 “SHURE” COD Sensor (Chemical Oxygen Demand Sensor) https://www.siam-instrument.com/product/shure-cod-sensor-chemical-oxygen-demand-sensor/ Fri, 25 Jul 2025 09:36:01 +0000 https://www.siam-instrument.com/?post_type=product&p=4236 COD Sensor (Chemical Oxygen Demand Sensor)

A COD (Chemical Oxygen Demand) sensor is a device used to measure the amount of oxygen required to chemically oxidize all organic substances in water. COD is an important indicator of water quality and is used to assess the level of pollution or contamination in wastewater from industrial plants and communities.

Working Principle:
Most COD sensors operate based on the UV-Vis light absorption principle. Organic substances in the water absorb UV light at specific wavelengths, allowing the amount of organic matter to be measured without the use of chemicals. Some sensor models may automatically compensate for turbidity to provide accurate results.

]]> Applications:

  • Wastewater Treatment:
    COD sensors are used to monitor and control water quality in wastewater treatment systems for both industrial and municipal sources.

  • Water Source Monitoring:
    COD sensors can be applied to monitor water quality in rivers, lakes, and other water bodies.

  • Water Quality Analysis:
    COD sensors allow for fast and accurate assessment of organic pollutants in water.

Advantages of Using COD Sensors:

  • Real-Time Monitoring:
    COD sensors provide continuous and immediate water quality data.

  • Low Maintenance:
    Some models are designed for durability and require minimal maintenance.

  • Environmentally Friendly:
    Certain models do not require chemicals for measurement, making them more eco-friendly.

  • System Integration:
    COD sensors can be easily integrated into water quality monitoring systems.

]]> “SHURE” Industrial PH sensor water quality tester PH probe monitoring box sewage PH detector https://www.siam-instrument.com/product/shure-industrial-ph-sensor-water-quality-tester-ph-probe-monitoring-box-sewage-ph-detector/ Fri, 11 Aug 2023 10:05:11 +0000 https://www.siam-instrument.com/?post_type=product&p=3191 Product name: “SHURE” Industrial PH sensor water quality tester PH probe monitoring box sewage PH detector
Power supply: DC 10~30V
Power Consumption: 485:0.6W 4~20mA/0~5V/0~10V:1.2W
Communication interface: RS485; standard ModBus-RTU protocol
Communication baud rate: 2400, 4800, 9600 can be set
PH measurement range: 0~14.00 PH; resolution: 0.01PH
PH measurement error: ±0.15 PH
Repeatability error: ±0.02PH
Temperature measurement range: 0~80°C; resolution: 0.1°C (set temperature during manual temperature compensation, default 25°C)
Temperature measurement error: +0.5°C
Equipment working conditions: Ambient temperature: 0-60°C Relative humidity: <85%
Electrode applicable temperature: 0~80°C
Electrode wire length: 5m, 10m, 15m, 20m optional (default 5m)
Electrode service life: 1 year

]]> “SHURE” Conductivity tester pure water electrode probe water quality detection water quality EC value detector https://www.siam-instrument.com/product/shure-conductivity-tester-pure-water-electrode-probe-water-quality-detection-water-quality-ec-value-detector/ Fri, 11 Aug 2023 09:28:48 +0000 https://www.siam-instrument.com/?post_type=product&p=3187 Product name: “SHURE” Conductivity tester pure water electrode probe water quality detection water quality EC value detector
Power supply: DC7~30V
Power Consumption: 0.4W
Communication interface: RS485; standard ModBus-RTU protocol; communication wave
Bit rate: default 4800 (2400, 4800, 9600 can be set)
Conductivity measurement range: K=1:1~2000us/cm; resolution: 0.1us/cm
K=10:10~20000us/cm; resolution: 1uS/cm
Conductivity measurement error: ±1%FS
Temperature measurement range: -20~100°C; resolution: 0.1°C
Temperature measurement error: +0.5°C
Temperature compensation range: -20~100°C (default compensation temperature 25°C)
Temperature compensation coefficient: default 0.02
Equipment working conditions: Ambient temperature: -20-60°C Relative humidity: <85%
Electrode wire length: default 5m (customizable 10m, 15m, 20m)
Salinity measurement range: RS485: K=1:0~1000ppm, K=10:0~11476ppm
TDS measurement range: RS485: K=1:0~1100ppm, K=10:0~13400ppm

]]> “SHURE” Aqueous solution composite electrode water quality nitrite ion calcium magnesium potassium sodium ammonium ion meter detector https://www.siam-instrument.com/product/shure-aqueous-solution-composite-electrode-water-quality-nitrite-ion-calcium-magnesium-potassium-sodium-ammonium-ion-meter-detector/ Fri, 11 Aug 2023 08:32:42 +0000 https://www.siam-instrument.com/?post_type=product&p=3184 “SHURE” Aqueous solution composite electrode water quality nitrite ion calcium magnesium potassium sodium ammonium ion meter detector

Ion species Interfering factors Working PH range
Industrial ammonium ion transmitter K+ 4-10PH
Industrial Nitrite Transmitter
 CH3COO-F-CI-NO3-SO4-
2.5-11PH
and other negative monovalent ions
Industrial Nitrate Transmitter
 ClO4 – I-CN-BF4-CI-NO2-
2.5-11 PH
Organic acid ions and other negative monovalent ions
Industrial Magnesium Ion Transmitter Zn2+ Fe2+ Cu2+ Ni2+ 3-10PH
Industrial Sodium Ion Transmitter Ag+ Li+ H+ 5-12 PH
Industrial Potassium Ion Transmitter Cs+NH4+ 2-12 PH
Industrial Calcium Ion Transmitter Pb2+Hg2+ Cu2+Ni2+ 3-10PH
Industrial Chloride Ion Transmitters S2-I-CN-Br- 2-12 PH
]]> “SHURE” Water quality portable ammonia nitrogen detector industrial monitoring analyzer fish pond aquaculture ammonia nitrogen sensor https://www.siam-instrument.com/product/shure-water-quality-portable-ammonia-nitrogen-detector-industrial-monitoring-analyzer-fish-pond-aquaculture-ammonia-nitrogen-sensor/ Fri, 11 Aug 2023 07:01:08 +0000 https://www.siam-instrument.com/?post_type=product&p=3182 Product name: “SHURE” Water quality portable ammonia nitrogen detector industrial monitoring analyzer fish pond aquaculture ammonia nitrogen sensor
Power supply mode: battery power supply (5000mAh lithium battery)
Display mode: 2.8 inch LCD screen
Data storage: 340,000 pieces of data
Charging time: ≤8h
Working environment: temperature -20°C-60°C; humidity <95%RH without condensation
Connectable devices: 1-4 ModBus device combinations
Communication protocol: ModBus-RTU protocol
Working voltage: DC 3.7V
Standby time: more than 8h continuous
Size: 174*88.5*35mm
Weight: 284g

]]> “SHURE” Water quality ammonia nitrogen detector industrial monitoring analyzer fish pond aquaculture RS485 ammonia nitrogen sensor https://www.siam-instrument.com/product/shure-water-quality-ammonia-nitrogen-detector-industrial-monitoring-analyzer-fish-pond-aquaculture-rs485-ammonia-nitrogen-sensor/ Fri, 11 Aug 2023 06:54:11 +0000 https://www.siam-instrument.com/?post_type=product&p=3180 Product name: “SHURE” Water quality ammonia nitrogen detector industrial monitoring analyzer fish pond aquaculture RS485 ammonia nitrogen sensor
Output signal: support RS-485, ModBus-RTU protocol
Measuring method: Membrane ion selection method
Range: 0-10ppm, 0-100ppm, 0-1000ppm
Accuracy: ±5%F.S. or ±3mg/L whichever is greater
Resolution: 0.1 mg/L
Working conditions: 0-40°C; <0.2MPa
Calibration method: two-point calibration
Response time: 30s T90
Temperature compensation: automatic temperature compensation (PT100)
Power supply: 12 or 24VDC±10%, 10mA
Protection level: IP68; water depth 20m
Electrode service life: 3~6 months
Cable length: 5m (default), can be customized
Sensor housing material: PVC; can be customized
Calibration cycle: 2~3 weeks

]]> “SHURE” Water quality turbidity sensor probe electrode industrial sludge concentration meter suspended matter sewage turbidity meter https://www.siam-instrument.com/product/shure-water-quality-turbidity-sensor-probe-electrode-industrial-sludge-concentration-meter-suspended-matter-sewage-turbidity-meter/ Fri, 11 Aug 2023 06:07:03 +0000 https://www.siam-instrument.com/?post_type=product&p=3178 Product name: “SHURE” Water quality turbidity sensor probe electrode industrial sludge concentration meter suspended matter sewage turbidity meter
Output signal: support RS485, ModBus-RTU protocol
Measuring method: 90° scattered light method
Range: 0~1000NTU or 0~200NTU
±5% of indication or ±3NTU, whichever is greater (0~1000NTU)
±3% of indication or ±2NTU, whichever is greater (0~200NTU)
Accuracy: +0.5°C
Resolution: 0.1NTU, 0.1°C
Working conditions: 0~50℃,<0.6MPa
Calibration method: two-point calibration
Response time: 30sT90
Temperature compensation: automatic temperature compensation (Pt1000)
Power supply: 12 or 24VDC±10%, 10mA
Size: Diameter 30mm: Length 166.5mm
Protection level: IP68; water depth 20m
Service life: sensor 3 years or more
Cable length: 5m (default) can be customized
Sensor housing material: PVC or titanium alloy (other)

]]> “SHURE” Water quality multi-parameter detector portable chlorophyll ECPH dissolved oxygen ammonia nitrogen analyzer detector sensor https://www.siam-instrument.com/product/shure-water-quality-multi-parameter-detector-portable-chlorophyll-ecph-dissolved-oxygen-ammonia-nitrogen-analyzer-detector-sensor/ Fri, 11 Aug 2023 04:25:59 +0000 https://www.siam-instrument.com/?post_type=product&p=3175 Product name: “SHURE” Water quality multi-parameter detector portable chlorophyll ECPH dissolved oxygen ammonia nitrogen analyzer detector sensor
Power supply: DC7~30V
Power Consumption: 0.4W
Communication interface: RS485; standard ModBus-RTU protocol; communication baud, rate: default 4800 (2400, 4800, 9600 can be set)
Conductivity measurement range: K=1:1~2000uS/cm; resolution: 0.1us/cm, K=10:10~20000uS/cm; resolution: 1uS/cm
Conductivity measurement error: ±1%FS
Temperature measurement range: -20~100℃; resolution: 0.1℃
Temperature measurement error: ±0.5℃
Temperature compensation range: -20~100°C (default compensation temperature 25°C)
Default temperature compensation coefficient: default 0.02
Equipment working conditions: Ambient temperature: -20-60°C Relative humidity: <85%RH
Electrode wire length: default 5m (can be customized 10m, 15m, 20m)

]]> “SHURE” Oxygen detection instrument water quality aquaculture industrial fresh water dissolved oxygen probe sensor https://www.siam-instrument.com/product/shure-oxygen-detection-instrument-water-quality-aquaculture-industrial-fresh-water-dissolved-oxygen-probe-sensor/ Fri, 11 Aug 2023 04:02:48 +0000 https://www.siam-instrument.com/?post_type=product&p=3171 Product name: “SHURE” Oxygen detection instrument water quality aquaculture industrial fresh water dissolved oxygen probe sensor
Power supply: DC 10~30V
Power Consumption: 0.2W
Communication interface: RS485; standard ModBus-RTU protocol; communication baud
, rate: default 4800 (2400, 4800, 9600 can be set)
Measuring principle: fluorescence method
Measuring range: 0~20mg/L (0~200% saturation)
Measurement accuracy: ±0.2%FS
Resolution: 0.01mg/L; 0.1%; 0.1°C
Response time: <60sec
Equipment working conditions: 0~40°C
Fluorescent film life: 1 year under normal use
Storage conditions: -10~60°C
Waterproof grade: IP68
Electrode wire length: default 5m
Shell material: corrosion-resistant plastic, stainless steel

]]> ”Supmea”SUP-7001 Flat pH electrode for flue gas desulfurization https://www.siam-instrument.com/product/supmeasup-7001-flat-ph-electrode-for-flue-gas-desulfurization/ Tue, 17 Nov 2020 06:55:25 +0000 http://www.siam-instrument.com/?post_type=product&p=921 [gap height="10px"]
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Overview

Product    Flat pH sensor
  Model   SUP-PH7001
  Measurement range   0-14 pH
  Zero potential point   7 ± 0.5 pH
  Slope   > 96%
  Internal impedance   150-250 MΩ(25℃)
  Practical response time   < 1 min
  Installation size   Upper and Lower 3/4NPT Pipe Thread
  NTC   10 KΩ/2.252KΩ/Pt100/Pt1000
  Heat resistance   0-60℃ for general cables
  Pressure resistance   1 ~ 6 Bar
  Connection   Low-noise cable

Introduction

SUP-7001 Flat pH electrode can be used for pH measurement of flue gas desulfurization (FGD), or other harsh environment, such as whitewash, seriflux, etc.

ph sensor

Function

· Adopt aerogel electrode, easy to maintain.

· Adopt flat glass bulb, good resistance to contamination and impact.

· High accuracy in high temperature or high pH value.

· High-quality low-noise cable, can achieve 60m long distance signal transmission.

Order Information

Product    Flat pH sensor
  Model   SUP-PH7001
  Measurement range   0-14 pH
  Zero potential point   7 ± 0.5 pH
  Slope   > 96%
  Internal impedance   150-250 MΩ(25℃)
  Practical response time   < 1 min
  Installation size   Upper and Lower 3/4NPT Pipe Thread
  NTC   10 KΩ/2.252KΩ/Pt100/Pt1000
  Heat resistance   0-60℃ for general cables
  Pressure resistance   1 ~ 6 Bar
  Connection   Low-noise cable


Installation

ph controller install .png

1. Side wall installation (*The pH electrode must be at an angle of 15 degrees to the liquid surface. Otherwise, it will affect the normal use of the pH electrode.)
2. Flange mounted at the top
3. Pipe installation
4. Top installation
5. Submersible installation
6. Flow-through installation

 

 

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