Telog 41 Series

LoRaWAN Stand-Alone Data Loggers

The Telog 41 series is a range of Trimble Water's stand-alone data loggers that operate on LoRaWAN IoT networks.

LoRaWAN technology has become the standard for constructing IoT private wireless networks for long-distance, low-power communication, complementing public cellular LTE-M and NBIoT networks.

This range includes several models depending on the types of signals and instruments connected, for applications that are mainly in the areas of water and environment.

All these models are packaged in rugged waterproof housings, can withstand a large range of operating temperatures (-40°C/+70°C) and offer an autonomy of several years.

The Telog 41 recorders can be integrated into the Trimble Unity centralized supervision package.

Applications

Remote monitoring of measuring locations, on sites without power, mainly in the areas of water and environment:

Pressure and flow monitoring of drinking water distribution networks
Leak detection
Water level monitoring (reservoirs, aquifers...)
Remote reading of meters or flow meters (pulse or encoder outputs)
Rainfall stations
Equipment monitoring (On/Off status, alarms, operating times, etc.)
Detection of alert levels (overflows, floods...)

Main benefits

Long distance transmission and low power consumption
Long battery life using user-replaceable batteries
Large operating temperature range (-40°C/+70°C)
Ease of installation and commissioning
A wealth of monitoring tools in the Trimble Unity package

Specifications

AVAILABLE MODELS

PR-41 for water pressure sensors
WL-41 for water level sensors
RG-41 for rain gauges
MTU-41 for water meters or flow meters with encoder outputs
PE-41 for instruments or equipment with pulse output or ON/OFF contact

MATERIAL AND ENVIRONMENT

Dimensions (H x W x D): 120 x 81 x 56 mm
Weight (MTU-41 / PE-41 / RG-41 models): 450 g (1 pound)
Weight (PR-41 / WL-41 models): 680 g (1.5 pounds)
Operating Temperatures: -40°C to +70°C
IP67 waterproof (submersible)
Material: Polycarbonate

POWER SOURCE

Powered by user-replaceable internal Lithium battery
Autonomy: 5 years for 1 transmission/15 min (may vary depending on signal level)

REGISTRATION

128 kb memory
Logging capacity: 28,000 time-stamped data readings (or 80,000 meter readings)
Configurable sampling rate (1 sec to 8h)

LOCAL COMMUNICATION

RS232 serial link by 4 pin IP67 connector

REMOTE COMMUNICATION

LoRaWAN bi-directional wireless technology, Class A
Secure access and exchanges using AES-128 encryption
Transmitting power: 18.5 dBm
Frequency: 915 MHz
Internal antenna (optional external antennas available)
Configurable or self-adjusting transmission frequency (depending on models)
Alarm notification on status or threshold violation

SENSOR INPUTS

Models PR-41 and WL-41 (pressure and level measurements):
— 1 input for pressure sensor with I2C series protocol.
— sensor scale selectable from 1 to 500 psi
— sensor accuracy: 0.1% of full scale
— stainless steel collector, polyurethane collector
— sensor mounting by 1/4'' NPT male threaded socket
Model RG-41 (Rain Gauges):
— 1 input for tipping bucket rain gauge pulse
— excitation contact 3 VDC/20 μA max.
— minimum pulse duration 10 msec.
— supplied with 2-wire sheathed cable (approx. 1 m)
Model MTU-41 (Encoder Counters):
— 1 input for 6 to 9 digits encoder register signal
— compatible with 3-wire AMR/AMI serial protocols (Sensus ECR, Neptune ProRead, Badger Meter ADE and HR-E, etc.)
Model PE-41 (Events and Pulse Counters):
— 1 input for event detection (ON/OFF status) or pulse counting (1 Hz max.)
— excitation contact 3 VDC/20 μA max.
— minimum pulse duration 10 msec.
— connection on 2-wire screw terminal block, via watertight connection