Product Overview
The Dynasonics E-Series G2 is Badger Meter’s inline transit-time ultrasonic cold-water meter — a permanent lead-free bronze spool with paired transducers in the flow tube and no moving parts, so it holds the tightest low-flow accuracy in the Dynasonics line. It comes in 5/8×3/4 through 8 in., reads to ±1.5% over the normal flow range, carries NSF/ANSI 61 & 372 potable approval, and handles water to 175 psi at 34–140°F. A 9-digit LCD, scaled/unscaled pulse and passive 4–20 mA outputs, AquaCUE® encoder connectivity and a sealed 20-year battery make it a set-and-forget metered point for building water, submetering and reclaimed irrigation. It is the enhanced lead-free bronze meter the stainless-steel U500w is being transitioned to.
Key Features & Benefits
- A permanent metered point, not a survey reading — a wetted inline spool is the right answer where a clamp-on survey number is not enough — the meter stays in the line and keeps billing-grade accuracy down to the minimum flow limit, not just at a one-time check
- Reads where a mechanical meter quits — with no moving parts in the stream, sand, suspended particles and pressure swings that wear out or jam a nutating-disc register do not stop the E-Series G2
- One output set covers SCADA and AMR — scaled/unscaled pulse and passive 4–20 mA drop it onto a building or SCADA system, and AquaCUE encoder connectivity carries the read to automatic meter reading — on the same meter
- Survives the pit — weatherproof, UV-resistant and fully submersible to IP 68, with a potted register, so it keeps reading in a flooded or buried vault
- Set it and forget it — a sealed 20-year battery and field-programmable registration over the infrared port mean no wiring to power it and no opening the meter to configure it
- Low pressure loss — a turbulence-free flow tube designed to reduce head loss keeps the metered point from becoming a restriction on the line
Specifications
- Measurement principle
- Inline transit-time ultrasonic — paired transducers in the flow tube send ultrasonic signals consecutively with and against the flow, and velocity is derived from the time difference between the forward and reverse readings; volume is computed from velocity, water temperature and bore diameter. No moving parts in the flow stream to wear or replace.
- Accuracy
- A new meter reads to ±1.5% over the normal test-flow limits and ±3.0% at the minimum test-flow limits, in the 45–122°F (7–50°C) range; meets and exceeds ANSI/AWWA C715
- Flow range
- Normal test-flow limits run by size — 0.08–30 gpm on the 5/8×3/4 in. up to 4–3500 gpm on the 8 in. (1 in. is 0.16–62 gpm; 3 in. 0.75–560; 4 in. 1.5–1100; 6 in. 2.2–2000), with minimum test-flow limits from 0.04 gpm
- Line sizes
- 5/8×3/4 through 8 in. — 5/8×3/4, 3/4 and 1 in. threaded, and 3, 4, 6 and 8 in. flanged
- Body / wetted material
- Lead-free bronze alloy housing with ultrasonic transducers; wetted parts are limited to the pressure vessel and transducers. The register is potted within an engineered-polymer enclosure
- End connections
- NPSM coupling-nut and spud thread on the 5/8×3/4 through 1 in. threaded sizes; bolted companion flange on the 3–8 in. sizes
- Compatible fluids
- Cold water — potable, and non-potable / reclaimed irrigation water; the ultrasonic measurement tolerates small amounts of suspended particles or gas bubbles that defeat a mechanical register
- Fluid temperature
- Measured fluid 34–140°F (1–60°C)
- Pressure rating
- Maximum working pressure 175 psi (12 bar)
- Outputs
- Scaled / unscaled pulse (solid-state relay, 30 V DC, 100 mA, 50 ms default width) and a passive 4–20 mA flow-rate output (two-wire, 9–50 V DC supply); BEACON®/AquaCUE® connectivity can be substituted for either output
- Communication options
- AquaCUE® encoder connectivity for automatic meter reading — encoder-only, or a dual output pairing the encoder with scaled/unscaled pulse or 4–20 mA; integrated 434/868 MHz wireless M-Bus or wired M-Bus configurable-telegram builds are available for fixed-network collection. The building / SCADA tie-in is the pulse and 4–20 mA pair
- Power
- Battery powered — a fully encapsulated 3.6 V lithium thionyl chloride cell with a 20-year life; not field-replaceable
- Display
- Easy-to-read 9-digit LCD showing total consumption, rate of flow, temperature and alarm / operating mode, with 160 days of hourly internal logging
- Potable-water / hygienic approvals
- Lead-free bronze body certified to NSF/ANSI 61 & 372 and the lead-free provisions of the Safe Drinking Water Act — the potable-approved member of the Dynasonics line
- Approvals & standards
- Meets and exceeds ANSI/AWWA C715; weatherproof, UV-resistant and fully submersible (IP 68); field-programmable over the infrared port with the Badger Meter Product Configuration Utility
Common Applications
- Potable cold-water metering in building and property management
- Tenant and zone submetering for cost allocation and billing
- Building make-up water and domestic-supply totalizing
- Non-potable and reclaimed irrigation-water measurement
- Industrial process cold-water service with small particle or bubble content
- Permanent metered points where clamp-on accuracy is not enough
The E-Series G2 is a cold-water meter for clean to lightly-laden water; if you need a non-invasive read on an existing line that cannot be cut into, the clamp-on TFX-5000 is the companion. Use the input form to give us the line size, the water and the read you need and we’ll confirm the fit.
Design & Selection Considerations
- Match the method to the fluid — transit-time vs Doppler — transit-time meters time an ultrasonic pulse sent with and against the flow, so they want a clean to lightly-laden liquid that passes sound (the TFX-5000 clamp-on and E-Series G2 inline). A Doppler meter (the DFX) does the opposite — it needs suspended solids or aeration to reflect the signal, which is what makes it the pick for sewage, slurries and aerated fluids. Use the input form to tell us how clean the fluid is and the right principle follows; the wrong one simply will not read.
- Clamp-on or inline — non-invasive vs best low-flow accuracy — a clamp-on meter straps transducers to the outside of the pipe — no cut-in, no pressure drop, no wetted parts, and it installs on a live line (the TFX-5000 / TFX-500w, and the portable DXN-5P). An inline spool (E-Series G2) is a permanent wetted body that holds the tightest low-flow accuracy and carries potable-water approval. Retrofit and survey work favour clamp-on; a permanent metered point with tight accuracy favours inline.
- Clamp-on needs a sound-friendly pipe — a clamp-on meter sends sound through the wall, so it wants a solid, sonically-conductive pipe of known material and wall thickness — metal and most plastics read well; heavy mortar lining, fibreglass, gas pockets, or badly corroded / scaled wall scatter the signal. Use the input form to give us the pipe material, OD and wall and we confirm suitability and transducer choice. The pipe is part of the meter on a clamp-on install — spec it as carefully as the fluid.
- Give the meter a developed flow profile — ultrasonic meters tolerate less straight run than a turbine, but a swirling or distorted profile off elbows, pumps and valves still biases the reading. Allow the recommended upstream / downstream straight run, or mount on the longest available run. More straight run, steadier reading — design the location, do not just clamp where it is convenient.
- Specify potable / hygienic approval where it is required — for drinking-water service the body must be lead-free and certified — the inline E-Series G2 carries a lead-free bronze body to NSF/ANSI 61 & 372. Say up front that the line is potable and we specify an approved body, not a general-purpose one. Approval is a build choice, not a field add-on.
- For heating / cooling energy, pair flow with a matched RTD pair — thermal energy is flow × the supply-return temperature difference, so an energy meter needs a matched temperature-sensor pair as well as flow. The UHC-120 integrates ultrasonic flow with the RTD pair to EN 1434, and the FC-215 computes energy from an external flow signal and RTD pair. For BTU / tenant billing, the matched sensor pair and the standard matter as much as the flow reading.
- Open channel: non-contact level or submerged area-velocity — in an open channel, flow is derived from level over a known primary device, or from velocity × area. The IS-4000 reads level non-contact over a flume or weir — nothing in the stream to foul; the IS-6000 submerges an area-velocity Doppler sensor where there is no primary device or the channel surcharges. A flume / weir site suits non-contact level; a surcharging or primary-less channel suits area-velocity.
To size & select the right Dynasonics E-Series G2:
Use the input form to send your pipe size and material (or line size), the fluid and how clean it is, the flow range and accuracy target, and the fluid temperature — with whether you need clamp-on or inline, energy / BTU, or open-channel — and we’ll spec the right Dynasonics meter, transducers and outputs for your application.
Flow Meter Application Sheet ›Talk to an engineer directly — Scott Prater, Principal · 917-580-0878 · scott@pratertechnical.com
Specifications compiled by Prater Technical Partners from Badger Meter Dynasonics ultrasonic flow product literature.