Gsm-Equipped Transmitters; Gsm Antenna Installation - ABB AquaMaster Instruction Manual

Electronic commercial water meter

Hide thumbs Also See for AquaMaster:

Table of Contents

Electronic Commercial Water Meter

AquaMaster™

2.4 GSM-equipped Transmitters

Before deciding on an antenna mounting location, check that the local signal strength for the chosen

mobile phone network is satisfactory. Use the GSM-equipped transmitter's integral signal strength test

facility to establish signal strength. Refer to 'Commissioning test for signal strength' in the Quick Reference

Guide for the AquaMaster S with GSM (IM/AMG–QRG).

If a GSM-equipped transmitter is not available, a standard mobile phone on the same network, positioned

as close as possible to the intended location, will give a good indication of local signal strength. For GSM

and logger download services, a minimum of two visible signal strength indicator 'bars' are recommended.

For SMS text, a minimum of one visible signal strength indicator 'bar' is recommended.

The following must also be observed when deciding on the antenna mounting location:

For best results, mount the antenna as high above local ground level as possible.

If the antenna must be mounted below ground, achieve optimum results by ensuring:

–

there is a strong mobile phone network signal at ground level

–

the antenna is mounted 50mm below the chamber cover, which must be plastic – see

Fig. 2.19

Ensure the antenna will not become submerged under water – see Fig. 2.19.

Metallic enclosures will seriously degrade the signal. If an enclosure is used it must be non-metallic.

Do not mount the antenna closer than 50mm to any solid wall or surface – see Fig. 2.20.

Do not mount the antenna beneath a solid surface (e.g. metal cover, floor/ceiling, etc).

Fig. 2.20 GSM Antenna Installation

³ 50mm

(2 in.)

2 Mechanical Installation

IM/AM

Issue 13

Table of Contents