Cảm biến đo PH, RX (ORP), độ dẫn điện, Clo dư FWT Systems

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Cảm biến đo PH, RX (ORP), độ dẫn điện, Clo dư FWT Systems
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Cảm biến đo PH, RX (ORP), độ dẫn điện, Clo dư FWT Systems

FWT offers PH and RX (ORP) electrodes in two types:

  • glass body
  • epoxy body

PH AND RX (ORP) ELECTRODES PLASTIC BODY WITH CABLE

ELECTRODES 31072016 - Word.jpg

EPH range pH 0...14, Single bulb junction 
ERX range ± 2000 mV, Platinum disc single junction 
6 bar (100 psi) / 0....60°C 
plastic shaft Polycarbonate, maintenance free gel electrolyte 
connector head with fixed coaxial cable D/3 mm (length 1m or 5 m) + BNC 
suitable for most pH and RX (ORP) controllers

Applications: laboratory, swimming pools, water treatment, process industry 

Each electrode is provided with a Storage Solution bottle. 
Recommended to place the electrode for storage when it’s not in use. 

PH AND RX (ORP) ELECTRODES WITHOUT CABLE AND HIGH PERFORMANCES

EDINPHG range pH 2..14 (0..14 short period) / 0...60 °C / 0…6 bar 
EDINRXG (ORP) range -1000 ... + 1000 mV / 0...60 °C / 0…6 bar 
EDINPHG10 range pH 0..14 / 0..80 °C (briefly 100°C) / 0..10 bar, Ceramic porous setting, Min.EC 100 μS/cm sample 
glass shaft, single pore, maintenance free gel 
connector type S8– standard connector head with integrated PG13,5 thread 
suitable for most pH and RX (ORP) controllers 
Applications: electroplating, swimming pools, water treatment, waste water, chemical, oxides
EPHG130 range pH 0...14 / Min.EC 50 μS/cm sample 
Maintenance free electrode designed for high pH values applications, high temperature and pressure 
0....130 °C / 0….16 bar at 25°C / 0….6 bar at 130°C 
ATEX approval CE 0035 EX II 1/2 G EEx ia IIB T4/T5/T6 
glass shaft, single pore, maintenance free gel 
connector type S8– standard connector head with integrated PG13,5 thread 
suitable for most pH and RX (ORP) controllers 
Applications: chemical industry, oxides, water and waste water
EPH6POL range pH 0... 14 / Min.EC 50 μS/cm sample 
Maintenance free electrode designed for all water applications 
-10....40 °C (briefly 60°C) / 0….6 bar 
ATEX approval CE 0035 EX II 1/2 G EEx ia IIB T4/T5/T6 
plastic shaft, single pore, maintenance free gel 
connector type S8– standard connector head with integrated PG13,5 thread 
Applications: water and waste water, Swimming pools, fish farming
EPHFL range pH 0... 14 / Min.EC 5 μS/cm sample 
Maintenance free electrode designed for all water applications 
-5....100 °C / 0….6 bar 
ATEX approval CE 0035 EX II 1/2 G EEx ia IIB T4/T5/T6 
glass shaft, single pore two diaphragms 
connector type S7 – standard head with integrated PG13,5 thread 
Applications: presence of high levels of hydrofluoric acid
EPHALK range pH 0... 14 
Maintenance free electrode designed for all water applications 
-5....100 °C / 0….6 bar 
ATEX approval CE 0035 EX II 1/2 G EEx ia IIB T4/T5/T6 
glass shaft, single pore two diaphragms 
connector type S7 – standard head with integrated PG13,5 thread 
Applications: presence of high levels of alkaline substances

CHLORINE MEASUREMENTS

Two types of chlorine measurement sensors are available:

  • ion selective potentiostatic membrane sensors
  • open system amperometric chlorine cell

ION SELECTIVE MEMBRANE CHLORINE SENSORS

CC1Hun Free Inorganic-Organic chlorine 
Range: 0.005 ….. 2 ppm (mg/l) free chlorine 
Resolution: 0.001 ppm (mg/l) 
Signal (nominal slope): -1000 mV/ppm pH-compensated 
Power supply: ±5 to ±12,5 Vdc / 10 – 25 Vdc 25mA 
Operating temperature: > 5 … < 45°C, automatic compensation by integrated temperature sensor 
pH range: pH 4 - pH 12 (low pH dependency) 
Flow requirement: approximately 30 l/h 
Pressure: 0,5 bar, no sudden pressure surges, impulses and/or vibrations or fluctuations 
Suitable chlorinating agents: NaOCl (sodium hypochlorite); Ca (OCl)2 (calcium hypochlorite); chlorine gas; 
Compatibility: Tensides: Isocyanuratic / Surfactants / Flocculants 
Application 1 standard duty (CLS2-CLS20) water treatment (also drinking water), swimming pool 
Application 2 with Gel ECC1S (upon request) sea water
CC1N Free Inorganic-Organic chlorine 
Range: 0.05 ….. 20 ppm (mg/l) free chlorine 
Resolution: 0.01 ppm (mg/l) 
Signal (nominal slope): -100 mV/ppm pH-compensated 
Power supply: ±5 to ±15 Vdc / 10mA
CLST2.1Hun Total chlorine
CLST20.1N Total chlorine
Application 1 standard CLST2.1Hun water treatment (also drinking water),swimming pools 
(NOT compatible with surfactantsfats/oil) 
Application 2 with electrolyte ECP2S/GEL sea water (tensides are partly tolerated)
AS2N Inorganic Free chlorine 
Measuring method: open probe amperometric 3 electrode system (NOT galvanic isolation) 
Flow rate / Pressure: 80 l/h / AS2 5 bar; AS3 approximately 8 bar 
Application AS2 drinking water, services for cold and hot water up to max 70°C, high pressure) 
Application AS3 drinking water, swim. pools, closed systems cold / hot water: legionella control
AS3H / AS3N-CL Inorganic Free chlorine

OPEN SYSTEM AMPEROMETRIC CHLORINE CELLS

Open system amperometric cell able to the measure organic and inorganic free chlorine with 0-10 mg/lt reading (ppm), with regulation of the in-coming water flow, suitable to host temperature probe and proximity switch.

CLC3 amperometric cell with 2 electrodes holders and proximity switch, capable to host temperature probe 
CLC2 amperometric cell with 2 electrodes holders, capable to host proximity switch and temperature probe 
CLC4 amperometric cell capable to host proximity switch and temperature probe 
PMMA body with PP electrode holders 
Self-cleaning cell with glass balls 
Range 0?10 ppm. Electrode Platinum/Copper in vertical position to avoid bubbles 
Flow adjustment: 40?50 l/h or by visual adjustment (to be steady and continuous) 
2 electrodes holder, Proximity switch and temperature probe 
Max pressure 5 bar - Max temperature 5?60°C

CONDUCTIVITY EC MEASUREMENTS

SCD Conductivity sensors, two electrodes open systems, provided with cable. 
Suitable for many basic applications at a short distance (max 8 / 9 m). 
Ranges K1 20.000?S / K5 200 - 2.000Ms 
Probes electrodes: Graphite or AISI316 
Probes body: PTFE or PVC 
Remarks: Graphite electrodes have more accuracy at high conductivity ranges (K1 can reach 100 mS range) 
Available upon request High resolution EC sensors with stem type shaft

PPM MEASUREMENT SENSORS

The following are sensors for various applications, which have in common the measurements range in ppm. 
For ppm measurements FWT has TOUCH and CTRL+ series controllers.

CN1-H-A12n / CN1N-A12n Absence of chlorine 
Application: to verify the absence of chlorine in water for drinking quality (e. g. reverse osmosis) 
CLS CD4H / CLS CD4N / CD7H / CD7N / CD7L Chlorine-dioxide 
Application: Swimming-pool, drinking water, process water; It must NOT contain tensides all types of water 
treatment, bottle washer, CIP plant; Tensides are tolerated
MST1N measurement of chlorite 
Application: measurement of chlorite for drinking water, swimming pool, process water 
WP7Hun / WP7Un / WP10 L-A12n / WP10-20%A12n Hydrogen Peroxide 
Application: All types of water treatment (e. g. bottle washer, CIP plant, rinser) for high H2O2 concentration 
WP10 L-A12n / WP10-20%A12n Hydrogen Peroxide 
Application: All types of water treatment especially for high H2O2 concentration
OZ1H / OZ1HN / OZ7H / OZ7HN dissolved ozone 
Application: all types of water treatment (CIP plants,rinser); swimming pools, drinking water, process water 
BR1-N / BR1N-A12n Bromine measurement 
Application: measure of Hypobromous acid HOBr for Drinking water; swimming-pool; process water 
PES7H / PES7N / PES7L peracetic acid 
Application: all water treatment, conductivity acids are tolerated, Tensides must NOT to be present 
SENSOXY dissolved oxygen sensor with cable 
Application: Water treatment, Waste water treatment, swimming pools, fish farms; composting facilities

OTHER SENSORS

PROXIMITY SWITCH SPROX 

Inductive proximity switch to detect in-coming flow, suitable for OFF-Line sensor holders “Base module” and 
chlorine cell model CLC3-CLC4
TEMPERATURE SENSOR STEMP-N 

Temperature sensor PT100 “cap” type, suitable for OFF-Line sensor holders “Base module” and chlorine cell 
model CLC3. Material PVC 1/2” thread, Tmax 45°C, Max pressure 5 bar, provided with 5 m cable
TEMPERATURE SENSOR PT100 

suitable for OFF-Line sensor holders. 
SPT100 G Temperature sensor, GLASS PYREX body, Tmax 100°C, Max pressure 2 bar, provided with 5 m cable 
SPT100 A Temperature sensor, AISI 316 body, Tmax 200°C, Max pressure 2 bar, provided with 5 m cable

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