Product details
Single-Channel Water Quality Controller — Entry-Tier 3-inch LCD
The InstroDirect IDWQ-1000 Single-Channel Water Quality Controller – 3″ LCD, 4–20 mA, Modbus is an entry-tier single-channel water-quality controller with a 3-inch 800×480 colour LCD, one 4–20 mA analog output, three SPDT relays, and RS485 Modbus digital output. ABS case, 96 mm × 96 mm × 132 mm panel mount, IP55. Accepts any InstroDirect analog electrode (APS pH, ACS conductivity, AOS ORP) or digital Modbus sensor.
Technical Specifications
| Parameter | Specification |
|---|---|
| Display / resolution | 3-inch colour TFT display (800×480 resolution) |
| Size | 96 mm × 96 mm × 132 mm |
| Power supply | (85 – 265) VAC |
| Power consumption | < 2 W |
| Storage temperature | (−20 – 70) °C |
| Operating temperature | (−10 – 60) °C |
| Material | ABS |
| Protection level | IP55 |
| Analog output | 1 channel (4–20) mA analog output |
| Relay | 3 Channel SPDT Relay (250 VAC, 30 VDC / MAX 5 A) |
| Digital output | 1 channel RS485 output |
| Communication protocol | Modbus RTU, maximum baud rate 115200 |
| Data storage | Built-in RTC clock + large-capacity memory, supports > 200,000 records |
| Core processor | Industrial-grade ARM Cortex M series, main frequency up to 0.5 GHz |
Typical Australian Applications
- Panel-mount retrofit on existing single-parameter cabinets
- Small WWTP aeration pH or DO control
- Cooling tower conductivity / blowdown control
- Food & beverage ingredient water single-parameter monitoring
- Aquaculture tank DO or pH monitoring
Frequently Asked Questions
Which sensors does the IDWQ-1000 support?
Any standard analog mV or 4–20 mA sensor (e.g. InstroDirect APS / ACS / AOS analog electrodes) or any InstroDirect digital RS485 Modbus sensor (IDH-100P, IDO-F40i, IDC-4E-SS etc.). One channel at a time.
Can this replace a HACH SC200 or Endress+Hauser Liquiline CM14?
For basic single-parameter control, yes — same class of device. Key difference: no sensor brand lock-in. Your existing pH or DO sensor (from any vendor, analog or Modbus) will work.
Is the LCD touchscreen?
No. The IDWQ-1000 uses hard buttons (Menu, Exit, arrows, Enter). For touchscreen operation step up to the IDWQ-3000 series.
Australian Technical Support & Commissioning
- Brisbane-based technical support from field engineers with 20+ years automation experience across Allen-Bradley, Siemens, Schneider Electric.
- On-site commissioning & configuration across QLD, NSW, VIC — sensor wiring, Modbus register mapping, SCADA integration, alarm threshold setup.
- Remote support via phone / email for WA, SA, TAS, NT.
Why InstroDirect vs Endress+Hauser Liquiline or HACH SC in Australia
The Endress+Hauser Liquiline CM14/CM442/CM44R and HACH SC100/SC200/SC1000 transmitter families are the default Tier-1 choices for Australian water utilities — but they lock you to proprietary digital protocols (Memosens / SC digital) and the vendor’s full sensor ecosystem. InstroDirect controllers accept both InstroDirect open-Modbus digital sensors AND standard analog mV / 4–20 mA inputs, giving you protocol freedom and typically 30–50% lower landed cost.
| Factor | InstroDirect IDWQ Series | Endress+Hauser Liquiline / HACH SC |
|---|---|---|
| Sensor protocol | Open RS485 Modbus RTU + analog | Proprietary Memosens / SC digital |
| Sensor vendor lock-in | None — swap sensor brands without replacing transmitter | Must use matching brand sensors |
| SCADA integration | Native Modbus to any PLC / RTU / gateway | Proprietary or HART via gateway |
| Price | Parallel-import, 30–50% below authorised distributor | Premium distributor pricing |
| AU support | Brisbane field engineers, direct | Third-party service network |
Request a Trade Quote
Panel builders, integrators, council water departments, and pharma / process teams get volume trade pricing. Submit a quote request and we’ll respond within one business day.
