Series DM-1000 DigiMag®Digital Differential Pressure Gage
Specifications - Installation and Operating Instructions
he Series DM-1000 DigiMag
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igital instrument to take the place of analog mechanical pressure gages. The
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igiMag
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field-programmed to display many commonly used engineering units as well as
percent of full scale. The Series DM-1000 can be programmed in 8 commonly
used engineering units plus percent of full scale. This capability allows quick units
selection on site, eliminating the need to calculate various unit conversions. The
DigiMag
applications where a set point can be input where the display will blink when the
filter is dirty, alerting the user that a maintenance action needs to occur.
Programming the Series DM-1000 is easy using the menu key to access 4
simplified menus which provide access to: Security level; engineering units; filter
set point; view peak and valley process readings; digital damping for smoothing
erratic process applications; display update to conserve battery life; zero and span
field calibration.
The Series DM-1000 DigiMag
scale accuracy of 1% on ranges down to 2˝ w.c. and 2% accuracy down to the very
low ranges of 1” to 0.25" w.c. Models are also available with bi-directional ranges.
DigiMag
9-24 VDC line power or simply 9V battery power. If using line power and
connecting the 9V battery, the battery will act as a back-up if line power is lost or
interrupted.
igital Gages are more versatile than analog gages with their ability to be
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®
Digital Differential Pressure Gages have an added feature for filter
®
Digital Differential Pressure Gages offer power versatility by working with
®
igital Differential Pressure Gage is the ideal
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®
Digital Differential Pressure Gage possesses a full
PECIFICATIONS
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ervice: Air and non-combustible, compatible gases.
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etted Materials: Consult factory.
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Housing Materials: Glass filled plastic.
Accuracy: ±1% F.S. including linearity, hysteresis and repeatability; ±2% F.S. for
ranges 1˝ w.c. and below.
Temperature Limits: 0 to 140°F (-18 to 60°C).
Compensated Temperature Limits: 32 to 122°F (0 to 50°C).
Long Term Stability: ±1% F.S. per year.
Thermal Effect: ±0.05% F.S./°F typ.; ±0.10% F.S./°F for ranges 1˝ w.c. and
below.
Display: 4-digit LCD (Digits: 0.60˝H x 0.33˝W).
Display Update: Selectable for 1 second to 10 minutes or update only from
button push.
Pressure Limits: Normal and bi-directional ranges 5˝ w.c. and lower = 2 psi
(13.7 kPa); Normal and bi-directional ranges 10˝ w.c. and higher = 11 psi (75
kPa).
Selectable Engineering Units: in w.c., psi, kPa, Pa, mm w.c., mBar, in Hg, mm
Hg, FS (0-100%).
Power Requirements: 9V battery or external power supply 9-24 VDC. Battery
included but not connected.
Type of Battery: 9V alkaline battery (Duracell
Battery Service Life: Battery life depending on the Display Update setting: 150
hours (typical) if Display Update = 1 second; 9 month (typical) if Display Update =
10 minutes; 1.5 years (typical) if Display Update is disabled. Battery may last up
to four times longer when using lithium-based battery ULTRALIFE U9VL-J.
Current Consumption: 5 mA maximum.
Electrical Connections: Removable terminal block for 16 to 26 AWG.
Electrical Entry: Cable gland for 0.114 to 0.250˝ (2.9 to 6.4 mm) diameter cable.
Process Connections: 3/16˝ I.D. tubing (5 mm I.D.), maximum O.D. 3/8˝ tubing.
Enclosure Rating: NEMA 4X (IP66).
Weight: 1.18 lb (535 g).
Size: 5˝ (127 mm) O.D. front face.
Agency Approvals: CE, EN 61326-1 [Immunity Test Requirement for Industrial
Environments] with the following SPEC:
IEC 61000-3-2
IEC 61000-3-3
IEC61000-4-2
IEC61000-4-3
IEC61000-4-4
IEC61000-4-5
IEC61000-4-6
IEC61000-4-11
®
Duracell
is a registered trademark of The Gillette Company.
vertical position required. That is the position in which all standard models are
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alibrated at the factory. Provide a 4-9/16˝ diameter opening in panel. Insert gage
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and secure in place with provided screws and adapters.
Included Accessories:
ounting lugs –3
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-20 x 2-1/2 screws –3
6
-20 x 3/8 screws – 3 (mounting hole depth is 3/8˝ [9.53])
4
able gland –1
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PERATING INSTRUCTIONS
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Key Functions
IGURE 1
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Pressure Connections
Two integral tubing connections are provided on the back of the gage. They are
sized to fit 3/16˝ (4.8 mm) I.D. x 5/16˝ (7.9 mm) O.D. flexible PVC tubing. To
easure single positive pressure, connect tubing to the + port and vent the – port
m
o atmosphere. To measure single negative pressure (vacuum), connect tubing to
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he – port and vent the + port to atmosphere. To measure differential pressure,
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connect higher pressure to the + port and lower pressure to the – port. Be sure the
pressure rating of the tubing exceeds that of the operating ranges.
Electrical Connections
A 9V battery or an external power supply 9-24 VDC can be used to power the unit.
If both battery and external power supply are connected, the battery will work as
back up power.
Battery Installation
The unit is shipped with a separate 9V alkaline battery. Remove the unit’s top back
cover, do not remove bottom cover. Connect the 9V battery to the battery holder as
shown in Figure 1. Replace top back cover and tighten screws to 2 ±.25 in. lbs.
External Power Supply Installation
Remove the unit’s back cover then connect the external power supply to the
terminal block as shown in Figure 1.
CAUTION
POWER MUST BE OFF WHILE WIRING CONNECTIONS
ARE BEING MADE. DO NOT EXCEED SPECIFIED SUPPLY
VOLTAGE RATINGS. PERMANENT DAMAGE NOT COVERED BY WARRANTY
WILL RESULT.
Lock out access to all menus or lock out access to all menus except Auto-Zero
function (Auto-ZERO).
peration Menu
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elect the measurement type – pressure, velocity or flow and corresponding
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ngineering units (Velocity and flow are not available for Model DM-1100).
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Display Menu
Monitor and adjust display related settings: Filter type, filter point, dampening,
display update, peak and valley.
dvanced Menu
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erform auto-zero or full-scale calibration.
P
SECr-MENU
:
OPEr-MENU
:
: diS-MENU
AdU-MENU
:
ABLE 1 PRESSURE RANGE VS. AVAILABLE UNITS
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of
%
esolution
R
S
F
m Hg
m
n Hg
i
m w.c.
m
bar
m
a
P
Pa
k
si
p
n w.c.
i
–
.250
0
–
0.500
–
1.000
–
2.000
5
1
1
2
50.00
100.0
OTE: OFL (over flow) or UFL (under flow) will appear when the low and high
N
ange levels have been exceeded by 10% F.S.
r
.000
0.00
5.00
5.00
.181
0
.361
0
.543
0
.903
0
1.806
3.613
.062
0
0.124
0.249
0.498
.245
1
.491
2
.738
3
.227
6
12.45
24.91
2.20
6
124.5
249.1
498.2
245
1
491
2
738
3
227
6
–
–
.622
0
1.245
2.492
4.982
2.45
1
4.91
2
7.38
3
2.27
6
124.5
249.1
.35
6
12.70
25.40
50.80
27.0
1
54.0
2
81.0
3
35.0
6
1270
2540
–
–
–
–
.368
0
.736
0
.104
1
.839
1
3.678
7.355
.467
0
0.934
1.868
3.736
.34
9
8.68
1
8.02
2
6.71
4
93.42
186.8
00.0
1
100.0
100.0
100.0
00.0
1
00.0
1
00.0
1
00.0
1
100.0
100.0
(in w.c.)
0.001
0.001
.001
0
.001
0
.002
0
.010
0
0.010
0.010
0.020
.100
0
SECURITY MENU
With the gage reading pressure (home position), press and hold the MENU key
ntil the Security MENU is displayed. Press the E key to show the security SUB
u
ENU SECr–0001. When the security SUB MENU is selected, the present
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ecurity level is displayed in the upper right hand display. To change the security
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level, adjust the number displayed to the number shown in the following table for
the desired security level.
ecurity Level
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Displayed
1
2
3
The password values shown in the table cannot be altered, so retain a copy of
these pages for future reference.
OPERATION MENU
With the gage reading a numerical value (home position), press and hold the
MENU key until the Security 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 for Series DM-1100 is PrES–INWC (Pressure–Unit)
PRESSURE SUB MENU: PRES – INWC
PrES – INWC: Pressure – inches of water column
With the LCD reading PrES – INWC, press the E key; the display will blink. Press
the q key to change the pressure unit then press the E key to save the desired
unit.
: SECR-MENU
ccess
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All menus access
All menus locked except
the auto-zero function
ll menus locked
A
: OPER-MENU
assword Value
P
o Enter
t
0
1
90
111
For pressure measurement, the following units are available:
INWC – Inches of water column MBAR – Millibar
PSI – Pounds per square inch INHG – Inches of mercury
KPA – KilopascalsMMHG – Millimeters of mercury
PA – PascalsFS – % of full scale
MMWC – Millimeters of water column
ith the gage reading a numerical value (home position), press and hold the
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ENU key until the Security MENU is displayed. Press the q key until the LCD
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hows diS – MENU. Press the E key to show the Display SUB MENUS.
s
FILTER TYPE SETTING
With the LCD reading FILt – OFF, press the E key; the display will blink. Press the
key to change the filter type then press the E key to save the desired filter type.
q
ILt – OFF: Filter type = OFF. The filter function is disabled.
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ILt – HIGH: Filter type = HIGH. The display blinks when pressure is greater than
F
the filter point.
FILt – LOW: Filter type - LOW. The display blinks when pressure is less than the
filter point.
ILTER POINT SETTING
F
ith the LCD reading 0.00 – SPPT, press the E key; the display will blink. Press
W
the q key to change the filter point then press the E key to save the desired filter
point.
EAK AND VALLEY SETTING
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00.0 – PEAK: Peak value = 100.0
1
he peak feature stores the highest pressure reading the instrument has measured
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ince the last reset or power up. At power up PEAK is reset to the present pressure
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reading. To manually reset the PEAK value, press the E key while in the PEAK
SUB MENU.
.0 – VALY: Valley value = 0.0
0
he valley feature stores the lowest pressure reading the instrument has measured
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ince the last reset or power up. At power up VALY is reset to the present pressure
s
eading. To manually reset the VALY value, press the E key while in the VALY SUB
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MENU.
ADVANCED MENU: AdU – MENU
ith the gage reading pressure (home position), press and hold the MENU key
W
ntil the Security MENU is displayed. Press the q key until the display shows the
u
dU – MENU. Press the E key to show the advanced function SUB MENUS.
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Auto ZERO: auto-zero
0.00 – SPPT: Filter point = 0.00. The filter point may be set to anywhere within the
ange of the instrument.
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AMPING SETTING
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With the LCD reading 1 – DAMP, press the E key; the display will blink. Press the
q key to change the damping level then press the E key to save the desired
damping level.
– DAMP: Damping level = 1. The damping level can be adjusted from 1 to 15.
1
amping stabilizes the display from instabilities due to things such as vibration and
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xcessive pressure fluctuations. The damping function adjusts the amount of
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readings that are averaged for each display update.
DISPLAY UPDATE SETTING
With the LCD reading rAtE – NORM, press the E key; the display will blink. Press
the q key to change the display update rate then press the E key to save the
desired display update rate.
rAtE – NORM: Display update = Normal (1 second).
The gage reads the process pressure and updates the LCD every second.
rAtE – 10: Display update = 10 minutes.
The gage reads the process pressure and updates the LCD every 10 minutes.
rAtE – KEY (On-Touch mode): Display update is disabled.
The gage reads the process pressure and updates the LCD whenever the p key
is pressed. If the p key is released, the LCD will hold and display the last pressure
reading.
NOTES:
1. Depending on the Display Update setting, the battery life is shown below:
-150 hours (typical) if Display Update is set for “Normal” 1 second update. rAtE-
NORM
-9 months (typical) if Display Update is set for 10 minutes. rAtE-10
-1.5 years (typical) if Display Update is disabled. rAtE-KEY
2. If the Display Update is set for 10 minutes or disabled (On-Touch mode), the
process pressure value can be read instantly by pressing and holding the p key
on the front panel. Also the LCD will automatically show “ALAr” if the filter point has
been exceeded.
NOTE: For accurate calibration, DO NOT apply any pressure when
erforming this function.
p
ith the display reading Auto ZERO, release pressure to Zero then press the E
W
key; the display will blink. Press the E key again to complete the auto-zero.
CAL – SPAN: full-scale calibration
With the display reading CAL – FS, apply full-scale pressure then press the E key;
he display will blink. Press the E key again to save the full-scale calibration or
t
ress the MENU key to cancel the calibration.
p
MAINTENANCE
This model is not field-serviceable and should be returned if repair is needed (field
repair should not be attempted and may void warranty). Be sure to include a brief
description of the problem plus any relevant application notes. Contact customer
service to receive a return goods authorization number before shipping.