Product details
Single-Channel Water Quality Controller — 4-inch LCD, Dual Outputs
The InstroDirect IDWQ-2000 Single-Channel Water Quality Controller – 4″ LCD, Dual 4–20 mA, RS485 + RS232 is the upgraded 4-inch single-channel controller with dual 4–20 mA outputs, three 120 VAC / 24 VDC relays, RS485 + RS232 digital outputs, and a larger 144 mm × 144 mm panel footprint. Same sensor compatibility as the IDWQ-1000 but with the extra outputs required for modern SCADA and PLC integration.
Technical Specifications
| Parameter | Specification |
|---|---|
| Display / resolution | 4-inch colour TFT display (800×480 resolution) |
| Size | 144 mm × 144 mm × 115 mm |
| Power supply | 24v DC |
| Power consumption | 2.5 W |
| Storage temperature | (−20 – 70) °C |
| Operating temperature | (−10 – 60) °C |
| Material | ABS |
| Protection level | IP55 |
| Analog output | 2 channel (4–20) mA analog output |
| Relay | 3 Channel Relay (120 VAC, 24 VDC / 1 A) |
| Digital output | 1 channel RS485 output, 1 channel RS232 output |
| Communication protocol | Modbus RTU, maximum baud rate 115200 |
| Data storage | Built-in RTC clock + large-capacity memory, supports > 200,000 records |
Typical Australian Applications
- Standard single-parameter SCADA-integrated panel
- Applications needing redundant 4–20 mA outputs (one to DCS, one to chart recorder)
- Legacy RS232 integration to older control systems
- Municipal water treatment inlet / outlet single-parameter monitoring
- Industrial process water
Frequently Asked Questions
When should I choose IDWQ-2000 over IDWQ-1000?
Choose IDWQ-2000 when you need two 4–20 mA outputs (typical SCADA + chart recorder), an RS232 serial interface for legacy systems, or the larger 4-inch screen for control-room visibility. Otherwise IDWQ-1000 is the more cost-effective choice.
Does this work with digital InstroDirect sensors?
Yes. RS485 Modbus RTU input supports any InstroDirect digital sensor (IDH-100P, IDO-F40i, IDC-4E-SS, IDTB-IL-316 etc.). One sensor at a time per controller.
Is this suitable for harsh outdoor installation?
IP55 is suitable for sheltered outdoor installation (under a cabinet or canopy). For direct rain or coastal marine environment, install inside an IP65 cabinet.
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.
