Telog Instruments

Ru-33 Features and Details

OverviewSpecificationsMeters, Sensors, and OptionsBrochure

Ru-33 Recording Telemetry Unit
Wireless RTU for underground monitoring.

Directly Monitor:

Popular open-channel wastewater flowmeters
Pressure level sensors
Ultrasonic level sensors
Water quality sensors and Sondes

Communicate Via:

Local connection
Cellular
Land-line telephone

Powered By:

6V Lantern battery
External DC

Other Features:

Alarm notification
Two year battery life
Burial antenna option
Submersible enclosure
Web application software

Telog’s Ru-33 Recording Telemetry Unit, (RTU), provides real-time monitoring and alarming of instruments and sensors found in the harsh environment of sewers and underground water vaults.

The Ru-33 has low power requirements and automatically monitors level, flow, pressure and water quality sensors. Data is forwarded wirelessly to a host computer operating Telog host application software, Telogers for Windows or Telog Enterprise. Data communication may be scheduled frequently (e.g. daily, hourly, every five minutes, etc.) and/or immediately in response to site alarm conditions.

The Ru-33 supports multiple sensor interface options including RS-232, RS-485, analog and digital inputs. For example, when connected to an open-channel flowmeter via RS-232, the RTU can interrogate the meter for it’s most recent level, flow velocity and battery voltage measurements.

Telog also provides optional sensors that may be directly attached to the Ru-33 including ultrasonic and pressure level, water quality Sondes, pH and conductivity, temperature, level switches and a rain gauge.

Wireless communication is supported via packet switched (e.g. 1xRTT) or circuit switched (e.g. CDMA) cellular. An optional burial antenna may be embedded in the street pavement producing a complete underground wireless monitoring solution.
The RTU is powered from a single, 6-volt lantern battery providing an operating life of six months to two years depending on sensor interface and call schedule.

Try our Telogers Enterprise Software:

Recorder
Model: Telog Ru-33

Type: Multi- channel underground RTU (Recording Telemetry Unit)

Recording

Sample rate: Programmable from 1/Sec up to 8 hours each channel
Data interval: Programmable from 1/sec up to 8 hours each channel

Memory

Size: 512 Kbytes
Storage method: Wrap around (first-in; first-out)
Data capacity: Dynamically allocated to active channels, any combination of:
     Analog input:270,000 values
     Pulse input: 200,000 values
     Event input: 67,000 values
     ComSensor input: 100,000 values

Communication:

Standard: local RS-232, 4 pin circular connector rated IP-67, auto-selected baud rate to 19.2K
Optional: Land line telephone; Telog M-324 2400 baud modem; Auto-dial/Auto answer; FCC and CSA approved | Cellular data modem; Provides both 1xRTT packet switched and CDMA circuit switched data.

Inputs: Limited to one ComSensor + one analog + one digital

ComSensor/meter: Selectable RS-232 or RS-485 to 19.2 Kbaud. Protocol determined by meter or sensor.
Analog: Selectable ranges: 0-1 VDC, 0-5 VDC, 4-20 ma | Excitation: Pulsed +5 or +12 VDC, (selectable duration) | Resolution: ±0.025%; 12 bits/Accuracy: 0.1% of full range at 25ºC ±50 ppm
Digital (one channel): Type: Selectable pulse counter or even recorder | Input: Contact closure or logic driven input | Excitation: 5 VDC at 20 µAmps (max) | Pulse width: 10 mS minimum

Battery

Factory installed: Single 6V alkaline lantern battery, Eveready Energizer model 529

Battery Life Example

Input ComSensor: Sigma 900 series flow meter with 1xRTT wireless communication and sampling rate of 5 minutes. The battery life for this unit with the following call schedules will be: 5 minutes = 1 month/15 minutes = 3 months/2 hours = 1 year/24 hours = 2 years.

External Power Input

Enclosure
Size: Cylindrical 4.5" x 15.4" | Weight: 7 lbs | Material PVC

Environmental

Temperature: 0 - 70º C
Submersible: IP67 (NEMA 6)

Support Software

S-3PC: Telogers for Windows
S-3EP: Telogers Enterprise
Data transfer unit: IP-78 rated PDA running Palm OS and Telog application program

Supported Sensors

Pressure Level Sensor: Submersible pressure sensor
Model: Telog PMP-1030
Ranges: 0-5 PSI thru 0-3-- PSI
Accuracy: ±0.25% of full scale
Construction: 316 stainless steel
Vent: In-line dry box with user replaceable desiccant

Ultrasonic Level Sensor: Ultrasonic transmitter (ComSensor)

Model: Massa M5000/95
Frequency: 95 KHz
Range: one foot to 13 feet
Beam Angle: 8º conical
Accuracy: ±0.25% over any range segment exceeding 12 inches (homogeneous environment)

Temperature Sensor

Model: AT-3u ambient temperature sensor
Range: -20 to +70º C
Accuracy ±0.2º C
Size: Stainless steel probe (4" x ¼") with three meters of cable

pH Sensor

Model: ISI pHS-M11tc
Type: Double junction reference cell (KCI/AgCl and KNO3)
Range: 0-14 pH
Output: ±59.16 mV/pH unit @ 25º C; Pre-amplified and temperature compensated. Includes internal lithium battery.

Telog Supplied Meters & Sensors		Ru-33 Support Meters & Sensors
	Ultrasonic Sensor	Flowmeters Via RS-232 or RS-485 interface to meter serial interface port	Hach Sigma Series ISCO 2150 Marsh McBirney Flo-Dar & Flo Tote3 Meters MGD ADFM & accQmin ADS Flowshark
	pH Sensor	Water Quality	Hach Hydrolab Multiparameter Sondes DataSonde 4a, MiniSonde 4a DSSX, DSS, MSS Hach WDM Pipe Sonde
	Pressure Sensor
	Temperature Sensor
	Rain Guage
	Burial Antenna Antenna installed in the road for wireless communication option.
	Pole Mount Antenna
	Yagi Antenna