Continuous trending of ammonium levels to control the nitrification process in municipal wastewater treatment plants with less than 30% industrial waste. Exclusively from Hach, CARTRICAL technology re

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AISE sc ISE Ammonium Probe

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Continuous trending of ammonium levels to control the nitrification process in municipal wastewater treatment plants with less than 30% industrial waste. Exclusively from Hach, CARTRICAL technology reduces interferences, providing greater accuracy. Must be connected to a sc200 or sc1000 Controller to form a complete system.

• A New Approach to ISE Technology CARTRICAL
• In Situ No Sample Preparation
• Compact Cartridge Simplifies Maintenance
• Economical Continuous Measurement
• Optional Automatic Cleaning System

A New Approach to ISE Technology CARTRICAL

The Hach NH4D sc Ammonium Sensor uses an ion-selective electrode （ISE） to detect ammonium ions （NH4+） directly in the aeration basin as ammonium nitrogen （NH4-N）. A pHD （differential pH） electrode is used as the reference electrode for superior stability. The most significant potential interference is from potassium ions （K+） which is compensated through the use of an integrated potassium ISE to correct the ammonium value. Potential interferences are further reduced using CARTRICAL technology. CARTRICAL calibrates each electrode individually and calibrates all three electrodes to each other. A temperature sensor is also included to improve accuracy.

In Situ No Sample Preparation

The NH4D sc sensor is designed for immersion directly in the aeration basin eliminating the need for sample preparation. It installs quickly outdoors without special housing. The sensor can easily be relocated to various locations for greater knowledge about the process.

Compact Cartridge Simplifies Maintenance

The NH4D sc sensor uses a calibrated sensor cartridge that should be replaced approximay twice a year （in typical operating conditions）. No electrolyte or reagents to change. Cartridge replacement only takes minutes - just remove the old cartridge, plug in the new, and enter the sensor code. Maintenance is also minimized because sample pumps, valves, tubing, and filtration devices are not needed.

Economical Continuous Measurement

Real time measurements of ammonium in the aeration basin can be used to more effectively control the nitrification process. The low purchase price makes the NH4D sc the perfect tool for providing more visibility into daily trends to enable optimization of nutrient removal.

Optional Automatic Cleaning System

A specially-designed air cleaning unit is available for the NH4D sc sensor. Air is directed at each of the three individual electrodes for optimal cleaning. A compact compressor is available to provide pressurized air for the cleaning unit with weather-proof housing suitable for tank-side installation without additional structural requirements.

What's in the box

Nitrate probe, sensor cartridge, user manual

Specifications

Accuracy:5 % of measured value +0.2 mg/L （with standard solutions）

Cable Length:Standard: 10 m fixed cable at sensor

Cable Length 2:Optional Extensions: 7.6 m （25 ft.）, 15.2 m （50 ft）, or 30.5 m （100 ft.）
Maximum Total Length: 100 m （328 ft.）

Calibration Method:Sensor code for sensor cartridge, 1 and 2-point matrix correction

Certifications:CE approved

Construction - Sensor Body （RD 242/262）:316 stainless steel with Ryton® ends

Data Transfer:current output, relays and bus communication via sc controller

Diameter:1.7 in （ 44 mm ）

Dimensions （D x L）:1.73 in x 13.78 in （44 mm x 350 mm）

Flow:< 4 m/s max. velocity

Installation Angle:45 ° ± 15 ° （vertical in flow direction）

Lower Limit of Detection （LOD）:0.2 mg/L NH4–N

Material:Wetted materials: Only immersed installation. Sensor body stainless steel 316, ends of Ryton PPS®2.

Measurement Method:Ion-selective electrodes for ammonium and potassium with pHD reference electrode and temperature sensor

Measuring Interval:continuous

Measuring Principle:Ion-selective electrodes for ammonium and potassium, pHD reference electrode and temperature sensor

Operating Temperature Range:-20 to 45 °C （-4 to 113 °F）

pH Range:5 to 9 pH

Power Consumption:1

Pressure Limit:3.10 bar （45 psi） max. air pressure for cleaning unit option

Range:0.2 to 1000 mg/L NH4–N

Repeatability:5 % of measured value +0,2 mg/l （with standard solutions）

Response Time:< 2 min （T90）

Sample Flow Rate:Sensor Immersion Depth 0.3 to 3.0 m （1 to 10 ft）; 0.3hPa （4.4 psi） pressure

Sample Temperature:0 to 40 °C （35 to 104°F）

Sensor Immersion Depth:0.3 to 3.0 m （1 to 10 ft.） max; 0.3 hPa （4.4 psi） pressure

Storage Conditions:5 °C to 40 °C

Warranty:2 years

Weight:2.91 lbs. （1.32 kg）