ASTI - Model 56 -4-Wire Transmitter, Controller & Analyzer
Chemically & Mechanically Resilient Polycarbonate NEMA 4X / CSA 4 IP65 Enclosure - Standard 1/2 DIN Cutout. 115/230 VAC & 24 VDC 4-Wire Power Operation Standard With Relays. Time Proportional Control (TPC) Relays for advanced control functionality, 4 each included with each controller. Available in any combination of Single or Dual Channel pH / ORP / ISE / Conductivity Configurations.
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- Extremely cost effective solution to provide full realtime measurement, analysis and control for pH, ORP, ISE & Conductivity Analyzer / Transmitter / Controller Requirements
- Automatic Temperature Compensation via 100 or 1000 Ohm Platinum Temperature Compensation Element (Avaialble in Standard and ACCU-TEMP configurations)
- Quad (4 each) Isolated & Independent 0-20 or 4-20 mA outputs for Signal and/or temperature standard, fully user configurable
- Analog Outputs can be scaled linearly or using optional PID alogrithm to control purposes
- HART is Standard and ProfiBUS available as an optional digital output
- Large LCD Display with touch membrane keypad - Menu Driven Interface and Programming
- Automatic Temperature Compensation from 0 to 150 °C (32 to 302 °F) for pH & ISE and 0 to 200 °C (32 to 392 °F) for Conductivity
- Standard Onboard datalogging offers realtime and historical trends for all process parameters on one or two channels (depending upon analyzer configuration) for up to 30 days time. This data can be downloaded to any USB stick for further data analysis and workup with programs such as Excel. In addition, on the local display you can view graphing and trending for this realtime data as well as review recent data sets up to 30 days back.
- The following links provide examples for visualization of some common weak base and weak acid species where the total ISE can be determined:
- Total Ammonia (NH3-N, or total ammonia as nitrogen)
- Total Fluoride (Total HF, or unreacted fluoride)
- Total Cyanide (Total HCN, or unreacted cyanide)
- Total Sulfide (Total HS, or unreacted sulfide)
- Additional pH compensation algorithms for other weak acid and weak base species can be added upon request
- All 56 analyzers ordered in the dual ISE/pH configuration can determine total ISE. This means that you can display, output and use for control purposes the free ISE and total ISE such as total ammonia (NH3), total fluoride (HF), total cyanide (HCN) or total sulfide (H2S). A link is provided below that summarizes the 56 analyzer capabilities to compute the total ISE present from the free ISE measurement (from the ISE sensor), the pH value (from the pH sensor) and the process temperature:
