Dwyer DM-1200 - Manual (Page 4)

MAIN MENU PROGRAMMING INSTRUCTIONS
(Upper Right Display Reads MENU)
Security Menu: SECr-MENU
Lock out access to all menus or lock out access to all menus except Auto-Zero
function (Auto-ZERO).
Operation Menu: OPEr-MENU
Select the measurement type – pressure, velocity or flow and corresponding
engineering units.
Display Menu: diS-MENU
Monitor and adjust display related settings: Filter type, filter point, dampening,
display update, peak and valley.
Advanced Menu: AdU-MENU
Perform auto-zero or full-scale calibration.
SECURITY MENU: SECr-MENU
With the gage reading pressure (home position), press and hold the MENU key
until the SECr-MENU is displayed. Press the E key to show the security SUB
MENU SECr–0001. When the security SUB MENU is selected, the present
security level is displayed in the upper right hand display. To change the security
level, adjust the number displayed to the number shown in the following table for
the desired security level.
The password values shown in the table cannot be altered, so retain a copy of
these pages for future reference.
OPERATION MENU: OPEr-MENU
With the gage reading a numerical value (home position), press and hold the
MENU key until the SECr-MENU is displayed. Press the q key to show the OPEr-
MENU. Press the E key to show the Operation SUB MENUS.
The Operation SUB MENUS are:
PrES – Pressure
UEL – Velocity FLO – Flow
FLOr – Flow range KFAC – K Factor ArEA – Area
DIA – Diameter XDIM – X Dimension YDIM – Y Dimension
If the instrument is set for Velocity, the OPEr MENU will have an additional KFAC
SUB MENU. If the instrument is set for Flow, the OPEr MENU will have additional
KFAC and ArEA SUB MENUS. These will be discussed under Velocity and Flow.
NOTE: When scrolling through the OPEr SUB MENUS, the measurement type
the unit is currently set for will show the units in the upper right display. The
other measurement types will have a blank upper right display (see below).
UEL (Velocity) SUB MENU:
For velocity measurement, the following units are available:
UEL-SFPM: Velocity – Standard feet per minute
UEL-M/S: Velocity – Meters per second
NOTE: Air velocity and flow readings are based upon standard dry air
conditions with an ambient temperature of 70°F and a barometric pressure of
29.92 INHG.
Security Level
Displayed
1
2
3
Access
All menus access
All menus locked except
the Auto-zero function
All menus locked
Password Value
to Enter
10
90
111
AVAILABLE VELOCITY RANGES
FLO (Flow) SUB MENU:
For flow measurements, the following units are available:
FLO – SCFM: Flow – Standard cubic feet per minute
FLO – M
3 H: Flow – Cubic meters per hour
FLOr (Flow range) SUB MENU:
The following flow ranges are available:
FLOr – HI: Flow range – High: 999.9 x 1K
FLOr – MED: Flow range – Medium: 99.99 x 1K
FLOr – LO: Flow range – Low: 9999
Input Range
in w.c.
0 - 0.25
0 - 0.50
0 - 1.00
0 - 2.00
0 - 5.00
0 - 10.0
0 - 15.0
0 - 25.0
0 - 50.0
SFPM Range
0 - 2002
0 - 2832
0 - 4004
0 - 5663
0 - 8954
0 - 12.66 x 1K
0 - 15.51 x 1K
0 - 20.02 x 1K
0 - 28.32 x 1K M/S Range
0 - 10.17
0 - 14.39
0 - 20.35
0 - 28.77
0 - 45.48
0 - 64.33
0 - 78.76
0 - 101.7
0 - 143.9
Range
in w.c.
0.25
0.50
1.00
2.00
5.00
10.0
15.0
25.0
50.0 SCFM
Range
9999
9999
9999
9999
9999
9999
9999
9999
9999 Max Duct Size
sq ft
4.994
3.531
2.497
1.766
1.117
0.789
0.644
0.499
0.353
Table 1: FLOr = LO
Maximum Duct Size (English)
Range
in w.c.
0.25
0.50
1.00
2.00
5.00
10.0
15.0
25.0
50.0 M 3 /hr
Range
9999
9999
9999
9999
9999
9999
9999
9999
9999
Max Duct Size
M
2
0.273
0.193
0.136
0.096
0.061
0.043
0.035
0.027
0.019
Table 2: FLOr = LO
Maximum Duct Size (Metric)
Range
in w.c.
0.25
0.50
1.00
2.00
5.00
10.0
15.0
25.0
50.0 SCFM
Range
99.99x1K
99.99x1K
99.99x1K
99.99x1K
99.99x1K
99.99x1K
99.99x1K
99.99x1K
99.99x1K Max Duct Size
sq ft
49.94
35.31
24.97
17.66
11.17
7.898
6.446
4.994
3.530
Table 3: FLOr = MED
Maximum Duct Size (English)
Range
in w.c.
0.25
0.50
1.00
2.00
5.00
10.0
15.0
25.0
50.0 M 3 /hr
Range
99.99x1K
99.99x1K
99.99x1K
99.99x1K
99.99x1K
99.99x1K
99.99x1K
99.99x1K
99.99x1K
Max Duct Size
M
2
2.731
1.930
1.364
0.965
0.610
0.431
0.352
0.273
0.193
Table 4: FLOr = MED
Maximum Duct Size (Metric)
Range
in w.c.
0.25
0.50
1.00
2.00
5.00
10.0
15.0
25.0
50.0 SCFM
Range
999.9x1K
999.9x1K
999.9x1K
999.9x1K
999.9x1K
999.9x1K
999.9x1K
999.9x1K
999.9x1K Max Duct Size
sq ft
499.4
353.1
249.7
176.6
111.7
78.98
64.46
49.94
35.30
Table 5: FLOr = HI
Maximum Duct Size (English)
Range
in w.c.
0.25
0.50
1.00
2.00
5.00
10.0
15.0
25.0
50.0 M 3 /hr
Range
999.9x1K
999.9x1K
999.9x1K
999.9x1K
999.9x1K
999.9x1K
999.9x1K
999.9x1K
999.9x1K
Max Duct Size
M
2
27.31
19.30
13.64
9.654
6.107
4.317
3.526
2.731
1.931
Table 6: FLOr = HI
Maximum Duct Size (Metric)