General warnings.
•The following information must be read and understood before proceeding with the installation, commissioning and maintenance of
the devices described in this document.
•ATTENTION! Any omission or failure to follow these instructions scrupulously can cause danger.
•ATTENTION! Explosion hazard. In case of batteries substitution, make sure that the type is compatible and complies with the
specifications indicated by the manufacturer.
•In case of batteries substitution, DO NOT disconnect the flat cable which connect the electronic boards without removing batteries
before
•ALWAYS substitute all the batteries, also in case of one single battery exhausted.
•If the device is powered by a fixed network, make sure you have disconnected the power supply before carrying out any type of
intervention. Failure to comply with this indication can cause damage to people and/or property.
•Follow the manufacturer's suggested warm-up time (
time required to obtain a reliable measurement
) of the transducer.
•Follow the manufacturer's suggested electric wiring of the transducer to measure (
ground shields at a single point, cable length and
section
); voltage measures on distances exceed 15/20 meters are subjected to electromagnetic disturbances. 0÷25mA inputs have a
superior electromagnetic compatibility (
EMC
).
•Avoid passage in cavities with power or high voltage cables.
•The protection and safety measures and the warranty provided by the Manufacturer with the equipment may be compromised if it’s
used in a manner that does not comply with this user manual.
•This equipment complies with CE regulations.
•Modifications or tampering not expressly approved by the Manufacturer could void the user's authorization to operate the equipment.
•This equipment must be installed by qualified personnel and in accordance with national regulations and/or related local requirements.
•Make sure that the object is properly fixed to supports/infrastructures capable of withstanding this load. Make sure proper methods
and materials are used when fixing the equipment to a wall.
•Only personnel expressly authorized by the manufacturer can open the container. There are no user serviceable parts inside.
1. Description.
The WSD10DGII is a datalogger designed to measure 4 input channels to acquire, peak
acceleration, biaxial incline, and wire linear deformation, with storage functionality of samples
acquired.
Developed for installations where maintenance is difficult to carry out, it is powered by an
integrated solar panel to avoid battery replacements, offering excellent performance even in
external indirect light conditions.
2. “Sentry” feature.
The main feature of WSD10DGII consists on strike detection caused by boulders and/or
avalanches against protection barriers: when acceleration detected on device’s channel 2,
exceed a threshold previously set during installation, device itself sends immediately the theshold
overcome alarm to the gateway.
This information can be later processed, depending by gateway model.
For models provided with ModBus communication protocol (
MWDG-MB,MWLI-MB
), ’information can be picked up from ModBus register and
managed by the external third party intelligence (
PLC, PC, etc.
).
It’s important to consider:
•the datalogger must not be installed upside down, with ±90°; ia correct installation guarantees incline versus and values existing range
to be considered is ±90°.
•the datalogger records an acceleration value of 0G when in static position. In threshold setup, a minimum acceleration value to be
surpassed must be configured; this value must be net of gravity force and doesn’t correspond to the overall force vector module, but
to vector projection module on, at least, one of the three axis available.
•acceleration threshold must be set as “higher” threshold and must have a minimum value of 0.1G. This value takes in account that the
gravitational acceleration constant is always present. Value is internally compared with sampled accelerations on three axis and, in
case of threshold trespassing even of one single axis, the datalogger will send an event alarm every 10 seconds until the alarm
condistion will ends with a final notification of alarm ceased;