Dwyer DM-1200 - Manual

Bulletin P-DM-1200
DWYER INSTRUMENTS, INC.
Phone: 219/879-8000 www.dwyer-inst.com
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A. Fax: 219/872-9057 e-mail: [email protected]
Specifications - Installation and Operating Instructions
Series DM-1200 DigiMag ® Digital Differential Pressure and Air Flow Gage
The Series DM-1200 DigiMag ® Digital Differential Pressure and Air Flow Gage
is the ideal digital instrument to take the place of analog mechanical pressure
gages. The DigiMag
® Digital Gages are more versatile than analog gages with their
ability to be field-programmed to select pressure, air velocity or flow operation. The
DigiMag
® Digital Differential Pressure Gages have an added feature for filter
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-1200 is easy using the menu key to access 4
simplified menus which provide access to: Security level; engineering units; K-
factor for use with various Pitot tubes and flow sensors, circular or rectangular duct
size for volumetric flow operation; 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-1200 DigiMag ® Digital Differential Pressure and Air Flow Gage
possesses a full-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. DigiMag
® Digital Differential
Pressure Gages offer power versatility by working with 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.
SPECIFICATIONS
Service: Air and non-combustible, compatible gases.
Wetted Materials: Consult factory.
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: 5˝ w.c. and lower = 2 psi (13.7 kPa) 10˝ w.c. and higher = 11
psi (75 kPa).
Power Requirements: 9V battery or external power supply 9-24 VDC. Battery
included but not connected.
Type of Battery: 9V alkaline battery (Duracell
® PC 1604 or equivalent).
Battery Service Life: Battery life depending on the Display Update setting: 150
hours (typical) if Display Update = 1 second; 9 months (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:
IEC61000-3-2
IEC61000-3-3
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.
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