Dwyer DH User Manual

Page 15

ArEA

DIA

XDIM

and

YDIM

SUB MENUS

These SUB MENUS become accessible if the instrument is set for flow. When meas-
uring flow, the area of the duct must be specified. Tables 3 and 4 show the input
range vs maximum flow and duct size. For a rectangular duct the maximum size is
specified in square feet or meters. For a circular duct the maximum size is specified
as the diameter. X, Y and circular dimensions are entered in feet with 0.01 foot res-
olution for FLOr = LO and 0.1 foot resolution for FLOr = HI, or entered in millimeters
with 1 millimeter resolution.

ArEA

- Area, select

CIR

for a circular duct or

RECT

for a rectangular

duct. If a circular duct is selected, the

DIA

SUB MENU will be activated. If a

rectangular duct is selected, the

XDIM

and

YDIM

SUB MENUS will be acti-

vated.

DIA

- Diameter, enter the diameter of a duct

XDIM

- Enter the “X” dimension of a duct

YDIM

- Enter the “Y” dimension of a duct

OUt

(Output) MAIN MENU

The

OUt

MENU selects the output type of the instrument. The SUB

MENUS are:

CtrL

- Control type

ALrE

- Alarm reset, manual or auto

ISP

- SP1 reverse or direct acting

AL.H

- Alarm inhibit

- Alarm type

ALDL

- Alarm delay

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