Dwyer Instruments RPME Series Specifications-Installation And Operating Instructions

Series RPME Room Pressure Monitor
Specifications - Installation and Operating Instructions
The Series RPME Room Pressure Monitor is designed for low differential pressure
applications that require stringent pressure monitoring and alarming. The Series RPME
can be configured to monitor positive or negative pressure in protected environments
and clean manufacturing areas. The RPME is a complete system with a fixed segment
LCD which enables access to pressure, security, calibration, and alarm setup. The
RPME room pressure monitor has a brushed stainless steel bezel that allows for easy
cleaning.
The RPME room pressure monitor has built-in status indication LEDs that will appear
green when within the user-defined pressure set range and will appear orange when
outside of the pressure set range. 2 SPDT independent control relays with adjustable
deadbands are also provided along with a 4-20 mA process output.
FEATURES/BENEFITS
• 2 SPDT relays allow for capability of local alarming and alarming to control system
• Automatic or manual alarm reset
• Visual LED alarms provide immediate local alert allowing corrective action to be
taken quicker to eliminate the problem from becoming widespread
• Stores peak and valley process readings
• Same installation diameter as Magnehelic
RPME room pressure monitor
• Password protected setup menu ensures no errors by untrained personnel
INSTALLATION LOCATION: Select a clean, dry location free from shock and vibration
where temperature limits will not be exceeded. Distance from the transmitter to the
receiver is limited only by total loop resistance. See ELECTRICAL CONNECTIONS.
Tubing feeding pressure to the instrument can be practically any length required, but
long lengths will increase response time slightly.
POSITION: All standard models are calibrated for use in a vertical mounting position.
Standard models will perform properly at other angles but should be spanned and
zeroed in the position in which they will be used. WARM-UP: It is recommended to
power up the RPME room pressure monitor and allow a 1-hour warm-up period before
taking measurements. This will stabilize the measurements and provide the best
accuracy.
PRESSURE CONNECTIONS: For installation convenience two sets of 1/8˝ female
NPT pressure ports are supplied. Be sure to seal the unused ports with pipe plugs
included.
Positive Pressure - Connect tubing to HIGH PRESSURE port and vent LOW
PRESSURE port to atmosphere.
Negative (Vacuum) Pressure - Connect tubing to LOW PRESSURE port and
vent HIGH PRESSURE port to atmosphere. (When operating this device in a dusty
environment, install an optional A-331 Filter Vent Plug in the vented port to keep
interior clean.)
Differential Pressure - Connect tubing from the higher source to HIGH PRESSURE
port and from the lower source to LOW PRESSURE port.
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
11/16
[17.46]
1/2 [12.70]
1-9/32
[32.54]
11/16
[17.46]
1/8 FEMALE
NPT LOW PRESSURE
CONNECTION
gage which simplifies field upgrade to
®
1/8 FEMALE
NPT HIGH PRESSURE
CONNECTION
1/8 FEMALE
NPT HIGH PRESSURE
CONNECTION
30Ø
1.250
1-3/4
[31.75]
[44.45]
1/2
1/8 FEMALE
[12.70]
NPT LOW PRESSURE
CONNECTION
[3]Ø3/16 [4.77] HOLES EQUALLY
SPACED ON A 4-1/8 [104.78] B.C.
SURFACE MOUNTING
SPECIFICATIONS
Service: Air and non-combustible, compatible gases.
Measurement Technology: Piezoresistive.
Wetted Materials: Consult factory.
Housing Material: Die cast aluminum case and SS bezel.
Accuracy: ±0.5% RSS (includes non-linearity: ±0.49%, hysteresis: ±0.05% and
non-repeatability: ±0.05%), or ±1% RSS (includes non-linearity: ±0.99%, hysteresis:
±0.05% and non-repeatability: ±0.05%).
Pressure Limits: Ranges 0.5 and 1.0 in w.c: 9 psi; Ranges 2.5 and 5 in w.c.: 1.5
psi.
Compensated Temperature Limits: 32 to 140°F (0 to 60°C).
Thermal Effects: 0.030%/°F (0.050/°C) from 77°F (25°C).
Power Requirements: 12-28 VDC, 12-28 VAC 50 to 400 Hz.
Power Consumption: 3 VA max.
Output Signal: 4-20 mA DC into 900 Ω max.
Zero and Span Adjustments: Accessible via menus.
Response Time: 8 ms.
Display: Backlit 4 digit LCD 0.4˝ height LED indicators for set point and alarm
status.
Electrical Connections: 15 pin male high density D-sub connection. 18˝ (46 cm)
cable with 10 conductors included.
Process Connections: 1/8˝ female NPT. Side or back connections.
Mounting Orientation: Mount unit in vertical plane. Size: 4-3/4˝ (120.7 mm) OD x
2-21/32 (67.5 mm).
Weight: 1.75 lb (794 g).
SWITCH SPECIFICATIONS
Switch Type: 2 SPDT relays.
Electrical Rating: 1 A @ 30 VAC/VDC.
Set Point Adjustment: Adjustable via keypad on face.
Phone: 219-879-8000
Fax: 219-872-9057
Bulletin P-RPME
2-1/16
[52.39]
2
[50.80]
4-47/64
[120.14]
4-31/64
[113.79]
Ø4 [101.60]
2-1/2
1/8 [3.18]
FACE
[63.50]
www.dwyer-inst.com
e-mail: info@dwyermail.com