AQM-100A Resistivity Analyzer/Controller
4Pages

Resistivity Analyzer/Controller The AQM-100A is a compact and lightweight panel type resistivity analyzer. This model, which allows for a wide range of temperature compensations from 0 to 100°C, is suitable for measuring the resistivity of ultrapure water (0 – 20MΩ·cm) used in semiconductor manufacturing plants, etc. The 4 – 20mADC transmission output and alarm contact output (2 circuits, contact “c”) come standard. Various features include sample water temperature display. Features Compact DIN 96 size Features compact and lightweight design – Dimensions: 96mm x 96mm (DIN standard) x 90mm Temperature compensation through microprocessor calculations Comparing to analog-type instruments, highly accurate temperature compensation is achieved with a wider temperature range covered. Suitable for high-temperature applications up to 99.9°C The unit can be used for measurements during hot water sterilization processes for ultra-pure water. 2 detectors connectable (optional feature) Water quality index at 2 different locations can be displayed; this is selectable by key operation. However, note that transmission output and alarm contact output correspond to the selected detector only. Temperature display As well as resistivity, sample water temperature can also be monitored at each point of measurement. The model operates on a universal AC power supply at 90 – 264VAC. Cell constant adjustable When replacing the detector to a new one, the cell constant can be easily adjusted by key operation . This ensures the value to be measured accurately. 2 alarm points setting available 2 alarm points corresponding to measured values can be set; low-limit alarm and lower-low-limit alarm or upper-limit alarm and lower-limit alarm. If the measured value falls below the set point, the corresponding LED, “ALM 1” or “ALM 2,” illuminates and no-voltage contact will be activated. Isolated 4 – 20mADC transmission output signals 2 isolated 4 – 20mA signals are available for connection to any external device. Easy determination of detector and transmitter quality By removing the detector’s connector and replacing it with an equivalent resistance calculator, whether a fault is caused by the detector’s side or transmitter’s side (including the cable) can be assessed. RS-232C interface (optional feature) Resistivity and solution temperature data can be output via RS-232C connection. Configuration Field site Local panel/Instrument room Controller Model AQM-100A Model AR (2 detectors connectable) Transmission output Alarm contact output Power supply

Standard Specifications Product name : Resistivity Analyzer/Controller Model : AQM-100A Measurement : 2 metal electrodes method Measurement range : Resistivity; 0.00 – 20.00MΩ·cm (at 25°C) The number of decimal places displayed (20.00 or 20.0) is selectable by key operation Temperature; 0.0 – 99.9°C, resolution 0.1°C (display only) : 4-digit digital LCD Display Temperature com- : Temperature range; 0 – 100°C Temperature-sensing element; Thermistor pensation (integrated into the detector) Transmission out- : Isolated output, 4 – 20mADC, Max. load resistance 650Ω put : Number of circuits; 2...

Terminal connection Wiring diagrams Alarm contact outputs Junction box (AR5) Plastic connector (AR4) Junction box (AR5) Plastic connector (AR4) Transmission outputs Power supply Extension cable Extension cable Alarm contact outputs Transmission outputs Notes: Either alarm contact output 1 or 2 can be set as the upper limit or lower limit. Product code Power supply 90 - 264VAC, 50/60Hz Custom spec. Transmission output 4 - 20mADC 4 - 20mADC equipped with RS-232C interface Connecting cable length*1 30m or less Custom spec. (31 - 100m) *1. The EC-10 extension cable must be separately ordered as...

Cable entry Hexagon width across flats: 29 Drip-proof connector Mounting screw Electrode section Extension cable (model EC-10) Product code Model AR4-212 (equipped with drip-proof connector) Model AR5-212 (equipped with junction box) Connection standards R3/4 (PT3/4): standard Custom spec. Transmitter to be combined Resistivity analyzer Conductivity analyzer Custom spec. Case connection standards: Rc1/4 None Equipped (SUS316) Custom spec. Cell constant 0.1/cm (standard cell for the AQM-100A/210A) 0.01/cm Language of documents Standard English Custom spec. Note 1: This is a compact detector...