St Engineering MIU1USLA Meter Interface Unit User Manual
- June 5, 2024
- ST Engineering
Table of Contents
ST Engineering Telematics Wireless Lt
Meter Interface Unit (MIU)
Model: MIU1USLA
User Manual
Revision 1.0, July 6, 2020
Copyright © Telematics Wireless Ltd.
All rights reserved
The document contains proprietary information of Telematics Wireless,
Ltd.; it is provided under a license agreement containing restrictions on
use and disclosure and is also protected by copyright law.
Due to continued product development, this information may change without
notice. The information and intellectual property contained herein are
confidential between Telematics Wireless Ltd. and the client and remain the
exclusive property of Telematics Wireless Ltd. If you find any problems in
the documentation, please report them to us in writing. Telematics Wireless
Ltd. does not warrant that this document is error-free.
No part of this publication may be reproduced, stored in a retrieval system,
or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise without the prior written permission of
Telematics Wireless Ltd.
General description
The Meter Interface Unit (MIU) is an endpoint device for use in an Advanced
Water Metering Infrastructure that enables utilities to optimize operations
through data collection and analytics. The MIU device is an ultra-low-power, a
two-way communication device for collecting water meter readings and is
designed to operate in the LoRa network. The LoRa system is based on LoRaWAN
for a smart water meter management system. The MIU device connects either to
the Mobile Data Collector or to the nearest gateway when it is in Fixed Mode
network configuration.
The device fits both Pit or Wall mounted Basement installation. The MIU is
wired to the meter interface and collects the meter data every configured
interval (e.g. every 15 minutes, hourly, daily, etc.), stores readings
records on non-volatile memory and transmits hourly data several times a day.
Key Features
- Two-way network for sensor monitoring and remote control
- Built-in antenna
- Integrated non-rechargeable Lithium Battery 3.6V/19Ah
- Interfaces with meters Encoders or Pulser sensors
- Ultra-low power consumption – Battery lifetime > 15 years (typical operation – 4 daily reads)
- Data logging capacity: 30 days records at 15 minutes intervals
- End-to-end information security including authentication, integrity protection, replay attack, and encrypted messages
- Comply with FCC part 15 non-license
Installing the MIU
The MIU is mounted either in a pit or in a basement. Pit mounted is depicted in the figure below.
Sensor Wire Interface
The MIU has the following Interfaces:
- Water meter reading interface.
- Valve control interface.
The wired encoder is equipped with a NICOR connector or bare wire.
Technical Data
4.1 Electrical Characteristics
Table 1: Electrical characteristics
| Parameter | Value |
|---|---|
| Internal Battery Voltage | 3.6VDC nominal |
| Internal Battery Capacity | 19,000 mAh nominal |
4.2 RF Radio Characteristics
Table 2: RF radio characteristics
| Parameter | Value(1) | Unit |
|---|---|---|
| Operating Frequency | 902…928 | MHz |
| Modulation | Lora | |
| Maximum Transmitter output power | 20 | dBm |
| Maximum Receiver Sensitivity | -125 | dBm |
| Antenna | Internal, Omni directional |
4.3 Mechanical Characteristics
Table 3: Mechanical characteristics
| Feature | Specifications |
|---|---|
| Maximum Dimensions (mm) | 170 x 80 x 50 mm |
| Housing | Solid and waterproof |
4.4 Environmental Characteristics
Table 4: Environmental characteristics
| Feature | Specifications |
|---|---|
| Operating Temperature | -30°C to +70°C |
| Storage Temperature | up to +30°C |
| Relative Humidity | 100% |
| IP rating | IP68 |
Certifications
Table 5: Certifications
| Standard | Category | Comment |
|---|---|---|
| IP 68 per IEC 60529-1 | IP Rating | |
| 47CFR FCC Part 15 | EMC/Radio |
Regulation Information
FCC Part 15 Regulation Class B digital device notice
The digital circuit of this device has been tested and found to comply with
the limits for a Class B digital device, pursuant to part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates uses and
can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct
the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
CAN ICES-3 (B)/NMB-3(B)
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numerique de la classe B est conforme a la norme NMB-003 du
Canada.
FCC interference Notice
This device complies with part 15 of the FCC rules.
Operation is subject to the following two conditions:
- This device may not cause interference; and
- This device must accept any interference, including interference that may cause undesired operation of the device.
Industry Canada interference Notice
This device complies with Industry Canada’s license-exempt RSS standard(s).
Operation is subject to the following two conditions:
- This device may not cause interference; and
- This device must accept any interference, including interference that may cause undesired operation of the device.
FCC and Industry Canada Radiation Hazard Warning
WARNING! To comply with FCC and IC RF exposure compliance requirements,
the device should be located at a distance of at least 20 cm from all persons
during normal operation. The antennas used for this product must not be co-
located or operated in conjunction with any other antenna or transmitter.
The device meets the exemption from the routine evaluation limits in section
2.5 of RSS-102 and compliance with RSS-102 RF exposure, users can obtain
Canadian information on RF exposure and compliance.
WARNING! Changes or modifications to this equipment not expressly
approved by the party responsible for compliance (ST Engineering Telematics
Wireless Ltd.) could void the user’s authority to operate the equipment.
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