Setra Systems SRIMV Operating instructions

Setra Velocity Monitor

SRIMV

Installation and Operation Manual

Table of Contents

1.0 Features and Intended Use

2.0 SRIMV Included parts

3.0 Installation

4.0 Menu Navigation and Configuration

5.0 Setting up the SRIMV menu

1.0 FEATURES

The SRIMV is a multi-mode (air velocity, flow, pressure, temperature and humidity) monitor. It has a 3

color backlight display, a digital input for a door switch, 2 analog inputs for temperature and humidity,

1 relay output for remote alarm indication and an internal pressure sensor. It can display and alarm on

Velocity, Flow, Pressure, Temperature and Humidity parameters.

User Interface

•Large LCD 2 line display shows values of the monitored parameters

•Green (Normal), Yellow (Warning), Red (Alarm) Backlit display for indicating the status

•Membrane keypad for ease of configuration and menu navigation

•Password Protection for security

Audible Visual and Remote Alarms

•Color Backlight LEDs

•Alarm on Pressure, Velocity, Flow, Temperature and Humidity

•Audible Buzzer

•Alarm delay, mute timeout, alarm enable/disable, buzzer enable/disable

•SPDT Relay for remote alarms, including Setra Remote Annunciator (SRAN)

Ease of Installation and Calibration

•Flush mount (mounts flush to wall surface) and duct mount (surface mount) versions; both are

wipe-down compatible for decontamination

•Rotate-able pressure fittings to eliminate crimping of pressures hoses, allows installation

flexibility

•Snap on cover, no visible fasteners

•Modular plug-in design using sub-base. Simultaneous electrical and plumbing connections

reduce initial installation and calibration costs. Unit can be calibrated in house or sent for

calibration service without removing the wiring or plumbing

•Push button zero and span calibration, no potentiometer adjustments

•PG9 and Conduit fitting in same unit, field selectable

Versatile

•Field selectable outputs, 4-20 mA, 0-5 VDC or 0-10 VDC

•One unit that can be field configurable for almost all duct and room measurement applications

2.0 SRIMV Included Parts

Fig. 2-1 Parts Provided

The SRIMV parts list includes:

•SRIMV Velocity Monitor

•Accessories: ordered separately

For Velocity and Flow measurement a Pitot tube, averaging probe or flow station is required as an input

to the pressure ports on the SRIMV. Setra offers the following averaging probe.

Averaging Flow sensor: Part # 242915-xx

The SRIMV can be used with any manufacturer’s probe. The “k” factor flow coefficient must be

entered into the SRIMV at commissioning. The default setting as shipped is K=1. K factor changes

based on probe length.

Installation

The 242915-xx units utilizes 1/4  ID, 3/8  OD tubing. First check that there are

no sharp bends in the tubing at any connection. Connect the “H” Port to the high input on the SRIMV

units. Connect the “L” Port to the low input on unit.

Approximate K factors for models:

242915-01: 1.32

242915-02: 1.39

242915-03: 1.46

242915-04: 1.46

242915-05: 1.58

242915-06: 1.67

Mounting

1. Install the unit horizontally to ensure accurate readings for units ranging

from 3-5/32  to 9-29/32 . If using a unit longer than the 242915-05, which is 9-

29/32 , vertical mounting is recommended.

2. Determine the duct’s flow direction and install the model 2429150-xx based on

the unit’s flow arrow imprint.

3. Cut a 7/8  hole in the ducting to accept the unit; tip should be at least to the center of duct.

4. Attach using two self-tapping screws inserted in the 3/16  mounting hoes.

3.0 Installation

The SRIMV is available in two models suitable for wall (flush mount) and surface

mounting (panel mounting). The front panel of the product and the rear housing are snapped

together. The two snaps are located on the left and right sides of the front panel. A 1.5mm（1/16

inch）Allen wrench or paper clip can be used to open the concealed snap fastening system.

The rear housing can be used to mount to a wall or into a 3 gang “off the shelf” electrical box.

Conduit (1/2”) or a PG9 cable connection are available for wiring to the terminals at the rear of the

unit. The rear housing acts much like a thermostat sub-base that does not have to be removed once

installed.

The front bezel contains the pressure sensor, PCBAand display. It is a complete module that can

be calibrated. The pressure and electrical connectors are disconnected simultaneously when the

front bezel is removed.

Before installing, determine a good installation location. For flush mount applications, the corridor

outside the room is preferred. For surface mount applications the unit may be mounted on the duct

work (avoid high vibration), a stable surface near the ductwork or inside a panel.

Fig 3-2 SRIMV Wall (Flush) mount housing rear

view of pressure fittings and electrical terminations

Unpack the product box. Do not remove the protective film on the front display screen until after

installation to prevent scratching of the display during the installation process. Remove parts and place

them on flat surface. Apply pressure on the side of the box to open the snap fit or use an Allen wrench

or paper clip as shown See Figure 1-2. First one side then the other, then pull the bezel forward to

remove it from the housing.

Fig 3-1 Wall (Flush) mount housing dimensions, front view

Fig. 3-4 Removing bezel from the base

Plumbing and Wiring to the Electrical Box (Rough in)

Flush mounting:

Use a 3 gang electrical box RACO 697 or equivalent or mount directly into the wall. If mounting directly

into the wall create an opening approximately 2.8” (71 mm) by 5.4” (134 mm). If using the 3 gang box

use #6 machine screws to mount the ears of the SRIM rear housing to the electrical box. If mounting

directly into the wall without an electrical box, use drywall screws to mount the 4 ears of the SRIMV

box to the wall.

Fig. 3-5 Rough Plumbing and Wiring to Rough-in box, Flush Mount Unit

Fig. 3-6 Wiring Diagram SRIMV

Terminal Function

EXC 18-30 VDC, 24 +/- 20% VAC

COM Power Supply COM and Analog Out COM

VOUT Analog Output + (VDC mode) 0-5 VDC, 0-10 VDC

mA Analog Output (mA output mode) 4-20mA

D1 Door status, wire to one side of NO contact

D_COM Door status, wire to other side of NO contact

DI2 Not used

AN1 + output of temperature sensor (if used) 0-5, 1-5, 0-10 VDC

A_COM Common output of temperature and humidity sensors (if

used)

AN2 + output of humidity sensor (if used) 0-5, 1-5, 0-10 VDC

COM 15V Power Common (return)

+15VDC Power for remote annunciator (if used) 15 VDC, 50mA

RLY1 NO Relay 1 Normally open contact, 3A 120 VAC, 28 VAC,

resistive load

RLY1

COM Relay 1 Common contact

RLY1 NC Relay 1 Normally closed contact

RLY2 NO Not used

RLY2

COM Not used

RLY2 NC Not used

Table 1 Wiring SRIMV

Fig 3-7 Pressure ports and electrical terminals, SRIMV

Pull wires through the openings in the

bottom of the base. ½” Conduit or

PG9 fitting openings are provided.

Rotating pressure Fittings, can point

up or down, SRIMV only

+(High)

Pressure

- Pressure

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