The Dynasonics® IS-4000 Open Channel flow meter measures level, flow rate and total volume of water flowing through weirs and flumes. It’s ideal for applications where sediment does not build up.
An economical open-channel flow meter, IS-4000 measures level, flow rate and total volume of water flowing through weirs and flumes. The meter includes a non-contact ultrasonic level sensor to detect the water level and then calculates the flow rate and total volume based on characteristics of the channel. All the measurements are available over Modbus RTU or Modbus TCP Ethernet and can be logged for historical records.
• Measure level, flow rate and total volume with a single device
• Simple setup for flumes and weirs
• Automatically retains an historical log of all measurements and
configuration events
• Easily connect up to SCADA systems
• Connectivity with BEACON Advanced Metering Analytics (AMA)
or AquaCUE Flow Measurement Manager
Based on empirical formulas, the IS-4000 calculates the flow rate based on the geometry of the channel or primary device and water depth. The level sensor measures the depth of the water used in the calculation. The IS-4000 includes a selection of primary devices with preprogrammed tables to simplify the setup, including:
• Parshall flumes
• Manhole flumes
• V-notch weirs
Additionally, you can enter custom tables using the Flow Meter Tool software.
| Parameter | Specification |
|---|---|
| Power Supply | 92–275 V AC (50/60 Hz), < 14 VA |
| Display | Graphical LCD 64 × 128 with backlight; displays actual flow rate, totalizers, and status. |
| Configuration | 3 front-panel mounted push-buttons or Mini USB with IP67 connector included. |
| Enclosure | Die-cast powder-coated aluminium, protection class IP67. |
| Cable Connections | Supply and signal cables: 2 × M20 cable glands included. From meter: M20 cable gland included. |
| Environmental | –4 to 140 °F (–20 to 60 °C). |
| Analog Output | 4–20 mA, 0–20 mA, or 0–10 mA; ≤ 800 Ω; active or passive; assigned parameter depends on flow meter mode. |
| Level Sensor Input | 4–20 mA from level sensor. |
| Digital Outputs | 2 Open Collectors: • Passive: max. 32 V DC, 0–100 Hz at 100 mA; 100–10,000 Hz at 20 mA. • Active: 24 V DC, max. 20 mA. Functions: active pulse (up to 2000 ms), minimum/maximum alarm, error messages, or pump control. |
| Solid-State Relay | Normally Open (N.O.) / Normally Closed (N.C.); max. 230 V AC, 500 mA, 1 Hz; function linked with open collector output 2. |
| Digital Input | 5–30 V DC; supports totalizer reset, positive return zero, BEACON/AquaCUE connectivity. |
| Communication | RS485 Modbus RTU, Modbus TCP/IP Ethernet, BEACON/AquaCUE connectivity. |
| Programming Port | Mini B USB, IP67. |
| Datalogger | 2 MB capacity with up to 130,000 logged records; logs date, level, flow rate, and tank volume. |
| Security | Three-level password protection. |
| Languages | English, French, German, Italian, Spanish, Czech, Russian. |
| Certifications | CE; Low Voltage Directive 2014/35/EU; EMC 2014/30/EU; RoHS 2011/65/EU and amendments 2015/863/EU & 2017/2102/EU. |
| Specification | DL 10 Ultrasonic | DL 24 Ultrasonic | ULM 53 Ultrasonic | ULM 70 Ultrasonic | C 21 Radar |
|---|---|---|---|---|---|
| Measuring Range | 0–49.21 in. (0–1250 mm) | 0–9.8 ft (0–3000 mm) | 0–19.7 ft (0–6000 mm) | 0–6.6 ft (0–2000 mm) | 0–49.2 ft (0–15000 mm) |
| Beam Width | 2° | 2° | 14° | 10° | 8° |
| Accuracy | 0.125 in. (3 mm) | 0.25 in. (6 mm) | 0.35 in. (9 mm) | 0.125 in. (3 mm) | 0.08 in. (2 mm) |
| Deadband | 2 in. (50 mm) | 4 in. (100 mm) | 8 in. (200 mm) | 6 in. (150 mm) | 9.84 in. (250 mm) |
| Ambient Temperature | –31 to 140 °F (–35 to 60 °C) | –31 to 140 °F (–35 to 60 °C) | –22 to 158 °F (–30 to 70 °C) | –22 to 158 °F (–30 to 70 °C) | –40 to 176 °F (–40 to 80 °C) |
| Transducer Material | PVDF | PVDF | PVC/PVDF | PVC/PVDF | PVDF |
| Protection Class | Type 6P, submerged 6 ft (1.8 m) for up to 24 hr | Type 6P, submerged 6 ft (1.8 m) for up to 24 hr | IP68 | IP67 | IP66/IP68, Type 4X/6P |
| Mount (US) | 1 in. NPT | 1 in. NPT | — | — | 1-1/2 in. NPT |
| Mount (EU) | G1 | G1 | G 1-1/2 | G 1-1/2 | G 1-1/2 |
| Ratings | CE, RoHS | CE, RoHS | CE (LVD, EMC, RoHS) | ATEX II 2G Ex ia IIB T5 Ga/Gb with isolator | CE (EMC, LVD, RED, RoHS), UKCA |
| Dimensions (H × W × D) | 3.2 × 2.0 × 2.0 in. (81 × 51 × 51 mm) | 4.9 × 3.1 × 3.1 in. (122 × 78 × 78 mm) | 5.1 × 2.2 × 2.2 in. (129 × 55 × 55 mm) | 4.8 × 2.8 × 2.8 in. (121 × 71 × 71 mm) | 4.28 × 2.99 × 2.99 in. (109 × 76 × 76 mm) |
Open channels with a primary device are a cost effective solution for managing varying flow rates in unpressurized systems. The IS-4000 flow meter performs best when used with a primary device, such as a flume or weir, and where the sediment does not build up.
• Flow into water treatment plants from reservoirs
• Storm and sanitary sewer systems
• Effluent from water resource recovery or wastewater treatment
• Industrial discharge
• Agriculture irrigation channels
