Name: Dissolved Oxygen (DO) Controller & Analyzer DO101
Brand: Senvolt
SKU: DO101

Dissolved Oxygen (DO) Controller & Analyzer DO101

Model DO101

Online dissolved oxygen controller, 0–20.00 mg/L, ±0.02 mg/L accuracy, 3 relays, 4–20 mA and RS485 Modbus. Ideal for STP aeration blower control.

0.00–20.00 mg/L (ppm) DO range

±0.02 mg/L accuracy

3 relays for blower control and alarms

4–20 mA + RS485 Modbus RTU

IP65, panel or wall mount

DO101 specifications

Measuring range	0.00–20.00 ppm; 0.00–20.00 mg/L
Accuracy	±0.02 mg/L (ppm) / 24 h
Resolution	0.01 mg/L (ppm), 0.1 °C
Relay alarm output	3 relays, high/low point trigger
Signal output	4–20 mA / RS485 Modbus RTU
Power supply	100–240 VAC or 24 VDC, 50/60 Hz
Dimensions	96 × 96 × 128 mm (H × W × D)
Panel cut-out	92 × 92 mm (H × W)
Protection	IP65
Calibration	2-point calibration
Installation	Wall or panel mounting
Weight	0.5 kg
Temperature compensation	PT1000, NTC10K, manual

The DO101 measures dissolved oxygen continuously in aeration tanks, MBBR and SBR reactors, fish ponds and natural water. Aeration is usually the largest power load in a sewage treatment plant, so holding DO at the right set point instead of running blowers flat out saves energy while protecting the biology.

Use the three relays to start and stop blowers or trigger low-oxygen alarms, or send the 4–20 mA / RS485 Modbus signal to a VFD or PLC for proportional blower speed control.

Typical applications

STP aeration tank blower control
MBBR, SBR and MBR biological reactors
Aquaculture and fish farms
River and lake water monitoring

Send us the application details and we will confirm the right configuration and lead time.

Dissolved Oxygen (DO) Controller & Analyzer DO101

DO101 specifications

Typical applications

More Water Quality Controllers & Analyzers

Get a quote for the DO101