Alicat V Series Volumetric Flow Meter Manuel d'utilisateur télécharger pdf (Page 42)

Option: Remote Electronics for High Line or Gas Temperatures

Some applications involve operating temperatures outside the standard Alicat device specications. A

solution using remote electronics is available. (This option is not applicable to liquid devices.)

The ow body’s components are minimized to only the required sensors. The ow data is sent to

the microprocessor electronics up to 6 feet away from the sensor package. Relocating the sensitive

electronics, including the LCD, allows for installation of the ow body in ambient temperatures as high

as 85° Celsius with gas temperatures under 100°Celsius.

In these applications we recommend our custom gauge calibration at a gas temperature of up to

70°Celsius. This will reduce zero shift errors that occur when actual gas ow temperatures deviate

substantially from the gas calibration temperature. This conguration is also used in integrations that

require a compact ow package at the installation point.

Maximum distance

between electronics

and sensor package is

6 feet.

Accessory: BB-9 Multi-Drop Box

The BB-9 Multi-Drop Box makes it convenient to wire multiple ow and/or pressure

devices to a single RS-232 port.

The Multi-Drop Box has nine 8 pin mini-DIN ports available. The ports are to be used

with a standard double ended 8 pin mini-DIN (DC-62) style cable going from the box

to each ow or pressure device. A single DB9 D-SUB type connector (COM PORT)

connects, using the included cable, to the serial connector on a PC or laptop.

All of the ow and/or pressure devices are powered via a terminal block on the front

of the box.

If more than nine devices will be required, additional Multi-Drop Boxes can be daisy chained together

with a double ended 8 pin mini-DIN cable plugged into any receptacle on both boxes.

Accessory: RS-232 to RS-485 Converter

Since most computers have RS-232 communication onboard, Alicat has chosen RS-232 as the digital

standard on all of its ow instruments. For those using RS-485 as their primary standard, our RS-232

to RS-485 converter will allow interface between an RS-485 system and Alicat’s ow instrumentation.

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Alicat V Series Volumetric Flow Meter Manuel d'utilisateur Page 42