Dwyer Instruments SERIES RSM Catalog Page

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SERIES RSM

ROOM STATUS MONITOR

For Sensing Low Pressure Using High Accuracy

Series RSM Room Status Monitor is designed for critical low differential pressure
applications that require stringent pressure monitoring and alarming. The Series RSM

can be congured to monitor positive or negative pressure in protected environments

and hospital isolation rooms per CDC guidelines. The RSM is a complete system with
a graphic user interface which enables access to pressure, security, calibration, and

alarm setup. The RSM has a NEMA 1 (IP20) rated re retardant plastic for indoor

applications.

FEATURES/BENEFITS

• Accurately monitors protective environments for negative or positive pressure
ensuring safety and reducing risk of catastrophic events

• Audible and visual alarm provides immediate local alerts allowing corrective action
to be taken quicker to eliminate the problem from becoming widespread

• Password protected set up menu ensures no errors by untrained personnel

• Optional BACnet communication from devices provides integration into building
control system for automated control and centralized monitoring and alarming

APPLICATIONS

• Hospital isolation wards

• Clean rooms

MODEL CHART
Model* Operating Range Model** Operating Range
RSM-1-A

RSM-2-A
RSM-3-A
RSM-4-A
RSM-5-A
RSM-6-A

*Excitation/Output: 24 VAC/4-20 mA or 0-5 or 0-10 VDC.

**Excitation/Output: 120 VAC/4-20 mA or 0-5 or 0-10 VDC.
Note: For optional BACnet communication change end from -A to -C for 24 VAC

power or from -B to -D for 120 VAC power models.

±0.05 in w.c.

±0.1 in w.c.

±0.25 in w.c.
±0.5 in w.c.

±1 in w.c.

±2.5 in w.c.

• Pharmaceutical

• Manufacturing

RSM-1-B
RSM-2-B
RSM-3-B
RSM-4-B
RSM-5-B
RSM-6-B

• Research labs

• Animal facilities

±0.05 in w.c.

±0.1 in w.c.

±0.25 in w.c.
±0.5 in w.c.

±1 in w.c.

±2.5 in w.c.

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ALARM

ACKNOWLEDGE

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TUBING HEADER PORT

Room status monitor Remote annunciator

SPECIFICATIONS
Service: Air or non-conductive, nonexplosive gases.

Accuracy: ±0.5% FS.
Temperature Limits: 32 to 120°F (0 to 50°C).
Humidity Limits: 5 to 95% relative humidity (non-condensing).
Thermal Effects: ±0.03% FS/°F (± 0.05% FS/°C).
Pressure Limits: ±15 in w.c. (±3.7 kPa).
Supply Voltage: Order code A (24 VAC): 18-32 VAC, 50 to 60 Hz; Order code B

(120 VAC): 85-265 VAC, 50 to 60 Hz; Main supply voltage uctuations up to 10%.

Power Requirements: 5 W.
Power Consumption (Voltage output): 5 W.
Output Signal: Selectable 4-20 mA (2-wire), 0-5 VDC (3-wire), or 0-10 VDC (3-

wire).

Switch Type: SPST.
Loop Resistance (4-20 mA output): 0 to 510 Ω.
Electrical Connection: Removable terminal block.
Process Connections: Barbed ttings for 3/16˝ ID tubing.
Enclosure Rating: NEMA 1 (IP20) rated for indoor applications.
Housing: Fire retardant plastic.
Mounting: Mount to standard double gang metal electrical box using 4x4˝ plaster

ring adapter.

Dimensions: 8˝ H x 5.4˝ W x 1.8˝ D (20.3 H x 13.7 W x 4.1 D cm).
Weight: 1.5 lb (680 g).
Communications: BACnet MSTP ASC optional.
Agency Approvals: CE, CSA (RSM only).

ACCESSORIES
Model Excitation/Output
A-285 Remote alarm annunciator with visible/audible alarm and acknowledge

switch

Process Tubing Options: See page 453 (Gage Tubing Accessories)

DWYER INSTRUMENTS, INC.

Differential Pressure Transmitters,

Air & Gas

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