Specialized @ 50 And @ 25 Leakage Measurement Mode; Specialized Air Handler Flow Measurement Mode; Automated Blower Door Testing, Cruise Control And Data Logging; Overview Of Gauge Operating Modes - TEC DG-700 Operating Instructions Manual


1.1.f Specialized @ 50 and @ 25 Leakage Measurement Mode:
- For one-point airtightness tests of building and duct systems, the DG-700 will display on Channel B estimated
leakage rates adjusted to either 50 Pascals or 25 Pascals of test pressure.
- Choice of leakage units (CFM @, m

1.1.g Specialized Air Handler Flow Measurement Mode:
- Designed for measuring air handler flow rates using a TrueFlow Air Handler Flow Meter or a Duct Blaster fan.
- Automatically adjusts displayed air flow rate using measured system operating pressures (NSOP and TFSOP).
- Choice of air flow units (cfm, m

1.1.h Automated Blower Door Testing, Cruise Control and Data Logging:
- The DG-700 can be used along with a computer and specialized TEC software (TECTITE, TECTITE Express
or TECLOG2) to conduct fully automated Blower Door tests.
- The Cruise Control feature allows you to automatically control a Blower Door or Duct Blaster fan to maintain a
constant 75Pa, 50 Pa, 25 Pa or 0 Pa building pressure without having the gauge connected to a computer.
- Both of the DG-700's pressure channel readings can be recorded using TEC's TECLOG2 data logging software.

1.2 Overview of Gauge Operating Modes

Mode Application
Multi-purpose pressure
Pressure/Pressure
(PR/ PR) measurements.
Multi-purpose pressure
Pressure/Flow
(PR/ FL) and air flow
measurements.
Specialized mode for
Pressure/Flow @ 50 Pa
(PR/ FL@50) one-point Blower Door
building airtightness
test.
Pressure/Flow @ 25 Pa Specialized mode for
one-point total leakage
(PR/ FL @25)
duct airtightness test.
Pressure/AH Flow Specialized mode for
(PR/ AH) measuring air handler
flow rates using a
TrueFlow Air Handler
Flow Meter or a Duct
Blaster fan.
Pressure/Velocity Pressure and air
velocity measurements.
(PR/ V)
3
/hr @ , l/s @, sq. inches @ , sq. centimeters @).
3
/hr, l/s).
Channel A Display
Pressure in units chosen
(Pa, in w.c.).
Pressure in Pascals.
Building pressure in Pascals.
Duct system pressure in
Pascals.
Normal system operating
pressure (NSOP) and test
flow system operating
pressure (TFSOP) in Pascals.
Pressure in Pascals.
2
Chapter 1 Feature Summary
Channel B Display
Pressure in units chosen
(Pa, in w.c.).
Nominal (unadjusted) air flow from the
selected Energy Conservatory test
device, in units chosen (CFM, m
Building leakage at 50 Pascals in units
3
chosen (CFM@50, m /h@50, l/s@50,
2 2
in @50, cm @50). Leakage rate is
determined by continuously adjusting
the measured air flow from the selected
Blower Door fan to a building pressure
of 50 Pascals, using the real-time
Channel A building pressure reading.
Total duct leakage at 25 Pa in units
3
chosen (CFM@25, m /h@25, l/s@25,
2 2
in @25, cm @25). Leakage rate is
determined by continuously adjusting
the measured air flow from the selected
duct testing fan to a duct pressure of 25
Pascals, using the real-time Channel A
duct pressure reading.
Total air handler flow in units chosen
3
(CFM, m /h, l/s). Air flow from the
selected Energy Conservatory test
device is continuously adjusted using
the measured NSOP and TFSOP
readings from Channel A.
Air velocity in units chosen
(FPM, m/s).
Operating Instructions
for the DG700
3
/h, l/s).