Swan AMI Powercon Specific and Acid Conductivity Analyzer (Discontinued by Swan)

Specific and acid conductivity for power cycle water

The Swan AMI Powercon is documented in one manual for two instruments. The AMI Powercon Specific measures the specific (total) conductivity of a sample, while the AMI Powercon Acid measures acid (cation) conductivity and is delivered with a cation exchanger bottle. Both are intended for conductivity measurement in power cycles, using a two-electrode sensor with an integrated Pt1000 temperature sensor such as the Swansensor UP-Con1000.

Status note: swan.ch shows the AMI Powercon Specific (A-23.441.100) and the AMI Powercon-Acid (A-23.445.101) as Discontinued Products. Swan lists this product on swan.ch as a Discontinued Product that can no longer be added to a quote request, so any supply depends on remaining stock and the manual below describes the instrument as it was documented by Swan. Swan lists a newer AMI-II range as separate products.

Technical specifications

Values are from the Operator’s Manual A-96.250.341, section 2.2, valid for a cell constant of 0.0415 per cm (Swansensor UP-Con1000).

Specific versus acid conductivity

Specific conductivity includes all ions in the sample, mainly the alkalizing agent, which masks the contribution of impurities. In the Acid version the alkalizing agent is removed in a cation column. All cations are exchanged for hydrogen ions and anionic impurities pass through, so the reading reflects the impurities. After a cation exchanger the temperature compensation curve for strong acids has to be set.

The conductivity is compensated to 25 C. Selectable curves include none, coefficient, neutral salts, high-purity water, strong acids, strong bases, ammonia and ethanolamine, and morpholine. The sensor cell constant is set by the manufacturer and printed on the sensor label, so no field calibration is needed once it is programmed in the transmitter.

Pre-rinse option and ordering notes

The AMI Powercon Acid with the pre-rinse option has a second cation exchanger bottle, which is pre-rinsed so that the resin can be replaced quickly. Pre-rinsing removes contaminants from the resin that might cause wrong readings. Both resin bottles are vented through small tubes to the sample collector.

Because the model is discontinued, state in the enquiry whether the Specific or Acid version, AC or DC supply and the pre-rinse option are required, and ask for current availability. Swan lists AMI-II Powercon transmitters and other conductivity analyzers as separate products.

How the Swan AMI Powercon works

A two-electrode sensor measures the electrical conductivity of the sample. A built-in Pt1000 sensor corrects the value for temperature. On the Acid version, the sample first passes a cation exchanger. This removes the alkalizing agent, so the reading shows the impurities such as chloride and sulfate.

Where the AMI Powercon is used

• Power cycle water
• Steam and condensate monitoring
• Feedwater control
• Boiler water checks
• Cation exchanger monitoring

Selection checklist for the AMI Powercon

• Specific or acid conductivity version
• Cell constant of the sensor
• Sample flow of 3 to 20 l/h
• Sample temperature up to 50 degrees C
• Output and relay needs
• AC or DC supply
• Panel size
• Cation exchanger bottle

Installation, commissioning and maintenance notes for the AMI Powercon

Mount the panel on a wall. Connect the sample inlet with a 1/4 in tube and run the outlet to a drain without pressure. Set the sample flow. Connect the supply and the outputs. Replace the cation exchanger resin when it is used up.

Requesting a quotation for the Swan AMI Powercon

Please send the version, the sample and the outputs needed. Seven Star LLC serves industrial customers in Oman and the GCC and replies with a quotation based on the information provided.

AMI Powercon measuring range

The range runs from 0.055 uS/cm to 30 mS/cm.

AMI Powercon accuracy

The accuracy is plus or minus 1 percent of the reading or 1 digit.

AMI Powercon range switching

The ranges switch automatically.

AMI Powercon sample flow

The sample flow is 3 to 20 l/h.

AMI Powercon sample pressure

The inlet pressure is up to 2 bar and the outlet is pressure-free.

AMI Powercon signal outputs

It has two 0/4-20 mA outputs, two limit relays and one alarm relay.

AMI Powercon power supply

The supply is AC 100 to 240 V or DC 10 to 36 V.

AMI Powercon transmitter

The aluminium transmitter is rated IP 66 and has a backlit LCD.

AMI Powercon panel

The stainless steel panel measures 280 x 850 x 200 mm and weighs 12.0 kg.

Analyzer records for the AMI Powercon

Record the cell constant, the resin change date and the readings at each service.

Choosing the right AMI Powercon version

Use the Acid version to see impurities that the alkalizing agent would otherwise mask.

Documents and quotation

The attached Swan Operator’s Manual A-96.250.341 and the swan.ch product pages are the sources for this page. Seven Star LLC supplies Swan products as an independent supplier in Muscat. Send the version, supply type and quantity with your enquiry. See other liquid analytical systems.