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Telog IFQ Monitor — Open-Channel Head-End

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Product Overview

The Telog IFQ Monitor is the open-channel head-end for the Badger Meter Telog line — a monitor and converter that takes a Raven-Eye 2 or Beluga area/velocity sensor over an RS-485 digital port and reads it out on a 144×32 graphical display scrolling flow, velocity, level and total flow, all set from a 7-key sealed keypad. A second 4–20 mA input can add an external loop-powered level sensor. For integration it drives a pair of 4–20 mA loops — one flow, one level — plus two relay contacts (a total-flow pulse and a sensor-fault alarm) and optional Modbus RTU. Data is held on a 64 Mb internal backup with an optional SD card for up to 32 GB across 21 channels, and an optional LTE module can send the files to an FTP server. It is built for open-channel sites that don’t feed SCADA or the Telog RM cloud — where the flow is read out locally, dropped into a panel or PLC, logged on site, and optionally pushed off an isolated location over cellular, all from one converter that reads either the radar or the submerged ultrasonic sensor. The enclosure is ABS rated IP65 / NEMA 4, and the head-end runs on either a low-voltage DC supply or line AC.

Sensors it reads & related Telog devices
Raven-Eye 2 — non-contact radar area/velocity sensor Beluga A/V sensor — submerged ultrasonic area/velocity sensor Ru-35 submersible RTU — IP68 telemetry for sewers RS-45 AC/solar RTU — continuous wastewater telemetry Telog RM cloud — remote monitoring, alarms & Esri GIS
Telog IFQ Monitor open-channel head-end display and converter (Badger Meter)
Telog IFQ Monitor — open-channel head-end with local display and dual 4–20 mA.

Key Features & Benefits

  • Local read-out at the site — the graphical display gives a stand-alone read-out of the live and totalized measurement for an open-channel sensor where no SCADA or cloud is in reach
  • Dual 4–20 mA into a panel — two analog outputs drop flow and level straight into a PLC or panel meter (250 Ω max), with optional Modbus RTU when you need the digital value
  • Relay contacts for totalizing and alarms — an SPST-NO contact pulses on total flow and an SPDT contact trips on a sensor fault, wiring a totalizer or alarm without a controller in between
  • Adds an external level sensor — a separate 4–20 mA input accepts a loop-powered ultrasonic or pressure level sensor, so level can come from a dedicated element rather than the A/V sensor alone
  • Logs locally, on two memories — a 64 Mb internal backup runs by default and an optional SD card adds up to 32 GB — up to 21 channels written as .tsv or .csv, no network required
  • Cellular for isolated sites — an optional LTE radio pushes the data files to an FTP server from a site with no wired link
  • Sensor-agnostic across the A/V pair — one head-end reads either the radar Raven-Eye 2 or the submerged Beluga over the same RS-485 connection

Specifications

Function
Local monitor and converter head-end for a Raven-Eye 2 or Beluga open-channel sensor — a 144×32 graphical display scrolls flow, velocity, level and total flow, with a 7-key sealed membrane keypad for units, output ranges and level offset
Sensor inputs
1× RS-485 digital port for the velocity sensor (Raven-Eye 2 or Beluga), plus 1× 4–20 mA analog input for an external loop-powered level sensor
Outputs
Two 4–20 mA outputs (flow and level, max. load 250 Ω); two relay contact closures — SPST-NO for total flow and SPDT for a sensor fault alarm (6 A @ 30 VDC / 6 A @ 250 VAC); optional Modbus RTU (slave) over RS-485
Logging
64 Mb internal backup memory standard; an optional SD card adds 16 GB (~50 years of data at a 1-minute interval), up to 32 GB depending on the card, recording up to 21 channels as .tsv or .csv, one file per month
Telemetry
Optional LTE Cat.4 cellular module, sending data files direct to an FTP server (.tsv / .csv)
Sensor compatibility
Telog Raven-Eye 2 and Beluga area/velocity sensors over RS-485; ABS IP65 / NEMA 4 enclosure, 9–28 VDC or 85–265 VAC power, operating −25 to +55°C

Common Applications

  • Stand-alone open-channel flow display at a site with no SCADA or cloud
  • Local 4–20 mA flow and level into a panel meter or PLC
  • Totalizing and fault-alarm contacts wired straight to a counter or annunciator
  • On-site logging at an isolated site with optional LTE-to-FTP backhaul
  • Reading either a radar or a submerged ultrasonic sensor from one converter
When the site needs cloud monitoring with alarms and GIS, pair the sensor with a Telog Ru-35 or RS-45 RTU into Telog RM instead of the local head-end.

Design & Selection Considerations

  • Log locally first — no power or signal required — every Telog device records to local memory and runs standalone indefinitely, so a site keeps recording even with no power and no network. Connectivity is optional at the start — a standalone logger can be promoted to live telemetry later without re-engineering.
  • Recorder or cellular RTU? — battery recorders (HPR-32A, PR-32A, RG-32A) suit surveys and temporary studies you collect on a schedule; cellular RTUs (Ru-32, Ru-35, RS-45) transmit to the Telog RM cloud for permanent, real-time monitoring and alarming. Recorder for portable or temporary work; RTU for fixed sites you watch continuously.
  • Match power and housing to the site — choose a multi-year lithium battery, solar, or AC power, and an IP68 submersible housing for vaults and sewers. The RS-45 runs continuous AC/solar duty; the Ru-35 is the submersible choice. Power and ingress rating decide where a site can go — spec them with the measurement.
  • Open-channel: radar or submerged ultrasonic? — for sewers and partially-full pipes Telog uses the area-velocity method. The Raven-Eye 2 is non-contact radar (±0.5% velocity) — nothing touches the stream, so no fouling and no confined-space entry; the Beluga is submerged ultrasonic (±1%) that works even when the pipe surcharges, with integrated level and shallow-flow capability. Radar when you can see the surface and want the highest velocity accuracy; ultrasonic when it surcharges or radar can’t see in.
  • Capture transients when they matter — for surge and water-hammer analysis specify the high-speed impulse variants — HPR-32iA, PR-32iA and the Ru-32iMA — which capture fast pressure transients a standard recorder would miss. Routine pressure logging and transient capture are different jobs — pick the impulse build when surge is the question.
  • Plan the data path — cloud, SCADA, or both — Telog devices report to the Telog RM cloud (built on Esri ArcGIS) over their cellular link; the line-powered RTUs and gateways can also export to your SCADA over Modbus RTU, 4–20 mA or SDI-12, while the battery cellular recorders deliver through the cloud. Decide the destination — and confirm the outputs your specific device carries — up front.

To size & select the right Telog IFQ Monitor:

Use the input form to tell us what you need to measure and where, how the site is powered (battery, solar or AC), and how you want the data (the Telog RM cloud, your SCADA, or both) — and we’ll spec the recorder, RTU, sensor and outputs for your monitoring program.

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 Telog product datasheets.