Retrotec MN BD3 & RT1000 - Manual (Page 4)

Page 4 of 8
SP801 rev-2011-09-07
The Digital Gauges
The Retrotec DM-
2A design has
been around since
2006 with a built
in automatic
controller. Its
firmware can be
easily updated
over the Internet
to take on new
improvements
like the larger
display shown.
The Minneapolis
DG-700 gauge
has been around
since 2000 and is
widely used. Its
display size and
content is fixed. A
built in automatic
controller was
added in 2010.
Retrotec DM-2 digital gauge Minneapolis DG-700 digital gauge
Speed control built into fan top. TV
clicker style control in gauge will adjust
fan speed by Jogging up or down,
setting speed or setting pressure.
Courtesy of the Retrotec Inc. Everson, WA, USA
Speed control knob in separate box.
Gauge will adjust fan speed by setting
pressure.
Courtesy of the Energy Conservatory, Minneapolis,
MN, USA
Gauge to fan
distance: 6 feet standard. Unlimited using
Ethernet cable or optional umbilical
extensions. 1 foot from gauge to control. Control to
fan limited by (120 or 240V) power
cord.
Accuracy: 1% of pressure reading or 0.15 Pa,
whichever is greater.
1% of pressure reading or 0.15 Pa,
whichever is greater.
Result Modes:
Channel A:  Pressure in: Pa, in.wc., PSF  Pressure in: Pa, in.wc.
Channel B:
Flow in:
 Pressure in: Pa, in.wc., PSF
 Flow in: cfm, l/s, m 3 /s, m 3 /h
 Flow @ (any pressure) Calculates
flow at ANY desired pressure
configured in Setup menu or
from the Set Pressure
 Pressure in: Pa, in.wc.
 Flow in: cfm, l/s, m 3 /h
 Flow at 25 and 50 Pa Calculates
flow at two pressures.
Channel B:
Leakage Area:
 EqLA (Canadian), EfLA (US) in:
cm
2 , in 2 , ft 2
 Leakage Area @ (any pressure)
calculates EqLA at ANY desired
pressure configured in Setup
Menu
 Leakage Area – EqLA (Canadian)
in cm
2 , in 2
 Leakage Area @ (25 and 50 Pa)
calculates EqLA at two pressures.