Operating instructions

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1.0 Introduction
Congratulations, and thank you for purchasing Setra’s Room Pressure Monitor
(Model SRPM). Its ease of operation and durable construction will provide years
of reliable service. While the SRPM is easy to operate, it is advisable to read this
guide carefully before use. It is designed to help you take full advantage of the
function and performance of the SRPM.
1.1 Intended Use
The SRPM is designed to monitor critical air environments, providing room static
pressure indication, alarming, and communication functions. The applications
include:
1.) hospitals - patient isolation and protection rooms, operating suites,
intensive care and emergency rooms.
2.) pharmaceutical, semiconductor, and precision
manufacturing and clean rooms.
3.) laboratories - medical research and BSLs (Bio-Safety Labs),
radiation, toxic metals and chemicals.
1.2 SRPM Function
The SRPM senses very low differential pressure using Setra’s patented, high accu-
racy capacitive sensor technology. The pressure difference for these application
is the difference in static pressure between a critical environment room and its
surrounding reference area ( usually a hallway or another room) see Figure 1.
Maintaining and monitoring a static room pressure difference insures that the
critical environment room is either protected or isolated from a surrounding
environment. Protection strategy requires a net positive room static pressure
difference, while isolation requires a net negative static pressure difference. The
SRPM can be programmed to monitor either positive or negative room static
pressure. The SRPM low pressure sensing technology is coupled with multifunc-
tional alarming and simple, intuitive touch-screen user interface with selectable
security protection.
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7.0 Model SRAN Remote Annunciator
Setra’s Remote Annunciator (SRAN) provides remote indication of
room status.
Green LED
Red LED
Acknowledge
Switch
Audible
Alarm
Green LED Visual indication of normal room
condition
Red LED Visual Indication of a breach in room
pressure protection.
Audible Alarm Buzzer sounds to indicate a breach in
room pressure protection
Acknowledge Switch Press to Silence the buzzer.
Operation
Under normal conditions the Green LED remains on. When an alarmed condition
occurs (i.e., room pressure falls outside preset range), a signal is triggered by the
SRPM, the Green LED shuts off, the Red LED flashes and the Audible Alarm sounds.
The acknowledge button can be pressed to momentarily turn-off the Audible
Alarm and the Red LED will continue to flash until the alarmed condition is cor-
rected. When the alarmed condition is corrected the annunciator will reset itself.
The Green LED will turn-on, the Red LED and Audible alarm will shut-off.