Baseline-systems BHM Series Hydrometer Manual de usuario descargar pdf (Pagina 7)

Hydrometers Operation and Maintenance Manual • 7

Specications, Cont.

NETAFIM USA HYDROMETERS WITH ELECTRICAL OUTPUT

Netam USA Hydrometers are equipped with electrical output devices that combine the high reliability

of hermetically sealed, magnetically driven registers with a wide variety of electrical output options.

Hydrometers (measuring instruments) provide electrical output information about the ow of water.

When more than just the traditional register is needed, they also provide the solution for automation and

communication with controllers, electronic devices and other water delivery systems.

Netam USA has three types of transducer outputs available which provide three levels of resolution:

• Reed Switch (RS) Register - low frequency pulse output for functions related

primarily to recording volume.

• Photo Diode (PD) Register - standard frequency pulse output (open collector) for

functions such as rate of ow and recording total volume.

• Photo Diode (PDH) Register - high frequency pulse (open collector) for functions

such as rate of ow and recording total volume.

ELECTRICAL OUTPUT SPECIFICATIONS

REED SWITCH (RS) REGISTER

The ow rate is transmitted as periodic electrical pulses are measured by the magnetic pointer in

the dial face. The hydrometer is congured to transmit a pulse according to a pre-dened volume

interval. The following summarizes the available volume intervals for various hydrometer sizes in

either gallons or cubic meters.

• A three pointer register, with a magnet installed on one of the pointers.

• Output denition: Volume Output

• Output type: RS – Reed Switch and PD – Photo Diode

The sensor is installed in a transparent plastic cover that can be mounted on the register in one of

three positions with the pointer facing the magnet. Three values of electrical output are available

in 1:10:100 ratios.

Manufacturer

Recommended

Recommended Register

Transducer Outputs

Baseline Basestation PDH

Hunter ACC 2-Wire PDH

Rain Bird MDC & Maxi RS

Signature All Models RS

Toro

Sentinel PDH

TDC 2-Wire PDH

Rainmaster All Models

RS (1” to 4”)

PD (6”, 8”)

Tucor

Flowmaster

PDH

& RK Series

Motorola All Models RS

Controller

Model

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