Industry Applications:
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The CA9300 conductivity controller is used in water quality monitoring fields such as wastewater and drinking water.
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Process control: such as chemical plants, paper mills, sugar refineries, power plants, semiconductor industry, chemical industry, etc.
Instrument Features:
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Convenient operation, reliable results
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The CA9300 pH/ORP/conductivity controller features a user-friendly interface with a 3.5-inch Chinese color screen display
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Clear menu layout, reliable results, and more convenient and easy-to-use operation
Rugged Design
The CA9300 pH/ORP/conductivity controller is equipped with an aluminum housing and IP65 protection class, meeting the requirements of most application scenarios.
Complete Standard Functions, Diverse Mounting Options, Flexible Configuration
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Power supply: 100-240VAC 50/60 Hz +10%
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Communication: two analog 4-20mA outputs, one MODBUS RS485
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Mounting options: panel-mounted/wall-mounted/pipe-mounted
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Dual relay outputs: flexible configuration
Technical Specifications
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Display 3.5-inch, TFT color LCD, resistive touchscreen
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Display resolution 320*240
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Controller dimensions 144 x 144 x 150 mm
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Operating temperature -20 to +60℃ (non-condensing)
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Storage temperature -20 to +70℃ (non-condensing)
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Weight 2 kg (controller)
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Housing Aluminum alloy, polyester coating
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Power requirements 100-240VAC 50/60 Hz
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Analog output signal Two 0/4 ~ 20 mA current outputs; load impedance ≤500Ω
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Communication Modbus RS485
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Protection class IP65
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Relays 2 channels; corresponding parameter and temperature upper/lower limit alarms; contact type - SPST normally open, 5A 30VDC, 5A 250VAC
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Cable glands 2 x PG 13, 2 x PG 11
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Altitude < 2000 m
Ordering Guide
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CA9300.0100 CA9300 pH/ORP Controller
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CA9300.0200 CA9300 Conductivity Controller
Source: Public information from the HACH Water Quality website
Case Studies
Municipal Wastewater Treatment · Controllers and Sensors — Application Case
Site Conditions
This is a Municipal Wastewater Treatment customer whose plant is at the inlet, biological and outlet stages of a municipal plant. The main task was online water monitoring with a controller and sensor combination.
The Problem
The difficulty lies in high solids and corrosive fractions, with large diurnal flow swings; at the same time effluent parameters drift and probes foul with sludge and biofilm. Specification therefore means matching each controller channel to its sensor type.
What We Did
We took a Hach channel approach — supplying against the Hach original part numbers. Delivery was built around matching each controller channel to its sensor type, with point-by-point checks on: stable compliance with Grade 1A discharge limits and online data reporting.
Operating Outcome
In service the system performs as intended — factory-matched combinations that make faults easier to locate, with routine maintenance falling noticeably.
Food & Beverage · Controllers and Sensors — Application Case
Application Context
dosing, pasteurising, filling and CIP stages is a typical Food & Beverage duty. The project started from Controllers and Sensors, focusing on online water monitoring with a controller and sensor combination.
Process Constraints
frequent cleaning demands instruments that withstand hot CIP/SIP caustic cycles, and syrups, dairy and beverages that scale easily, under strict hygienic requirements only amplify it. The Controllers and Sensors specification must therefore cover matching each controller channel to its sensor type.
Delivery Approach
Delivery was handled as the Hach channel — supplying against the Hach original part numbers. Execution centred on matching each controller channel to its sensor type, together with food-safety and hygienic design per 3-A / EHEDG.
Field Results
Operation shows the benefit clearly — factory-matched combinations that make faults easier to locate, with confidence in this measuring point improving markedly.
Chemical & Pharmaceutical · Controllers and Sensors — Application Case
Customer Profile
The typical setting in Chemical & Pharmaceutical is reactors, metering vessels and finished-product tanks. The measuring point is Controllers and Sensors; the focus is online water monitoring with a controller and sensor combination.
Key Difficulties
Conditions are highly corrosive media with solvents and crystallisation, partly in explosive atmospheres and, on top of that, corrosion plus Ex protection shortens instrument life and makes downtime costly, which a standard configuration cannot handle for long. The design therefore starts with matching each controller channel to its sensor type.
Implementation
The scope ran through the Hach channel: supplying against the Hach original part numbers. Technically it hinges on matching each controller channel to its sensor type, and on these requirements: Ex certification and GMP traceability of records.
Customer Benefit
In practice this means factory-matched combinations that make faults easier to locate, which cut the workload on the site maintenance team.
Power & Energy · Controllers and Sensors — Application Case
Project Background
The project covers boiler feedwater, turbine condensate and FGD/DeNOx systems. The work centres on Controllers and Sensors and the core task is online water monitoring with a controller and sensor combination.
Operating Challenges
The medium and duty are characterised by high temperature and pressure with both steam and saline water, and drift under high temperature and pressure, with very costly unplanned outages. So Controllers and Sensors cannot be specified generically — it calls for matching each controller channel to its sensor type.
Solution
The Ainstru engineering team worked through the Hach channel: supplying against the Hach original part numbers. The configuration involves matching each controller channel to its sensor type, with these requirements in view: compliance with power-industry codes and unit availability targets.
Results
Since start-up the system has run steadily; the practical result is factory-matched combinations that make faults easier to locate.
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