Setra MRG Specifications

Model MRG

Multi-Range General
Pressure Transducer

The Setra Model MRG is Setra’s newest dierential pressure
transducer. The Setra MRG is the ideal product for any contrac­tor, combining the exibility of a multi-range with the perfor­mance of a single range transducer. The MRG has 8 selectable
ranges and 3 selectable outputs, easily adjustable on the job
with a ip of a switch or jumper. The MRG uses an IP67 rated
housing and has a conduit tting for easy wiring, making the

MRG an ideal solution for any general HVAC application.

Universal Design

The Setra MRG utilizes a universal design that gives the user
total exibility to make changes on the job site. The user has
the option to choose the eld congurable range, mounting
(DIN Rail, wall mount and duct mount), output (mA or Volt) and
engineering unit (W.C. or Pascals). This exibility means that

the contractor can use the MRG for all of their needs.

n Universal Design
n IP67 Rated Housing

8 Field Selectable Ranges

The Setra MRG provides 8 eld selectable ranges (0.5, 1.0, 2.5
and 5.0”W.C.). These ranges can be selected on site by ipping
the jumper to the desired range. Setra chose these ranges
from analyzing 30 years worth of customer data that proved
up to 90% of all dierential pressure transducers ordered from

Setra that require 1.0% accuracy are between 0.5 and 5.0”W.C.

IP67 Rated Housing

The MRG housing is a robust IP67 rated design and is sealed
with a gasket to make it wash-down capable for dicult appli­cations. The MRG also has a conduit tting that make installa-

tion and wiring easier.

Capacitive Sensing Technology

Only Setra can claim ownership to the stainless steel capacitive
design used in all of our HVAC/R sensors. Our advanced capac­itive element provides excellent stability and linearity, while
standing above the competitors in our ability to measure low
pressure (<0.001”W.C.) at high accuracy. Our technology has
been used in over 8 million installations and has the highest
eld acceptance rate in the industry.

n Field Selectable

Model MRG Features:

• Field Congurable Duct Probe

• 4 Digit LCD

• Field Selectable Range

• Field Selectable Output

• Simple 5-Step Setup

• Field Accessible Push-Button Zero & Span

• External Mounting Tabs & Optional DIN Rail

• Unregulated AC/DC Operation

Target Uses:

• Sub-Contractors- Quick Installation

• Flexible for Building Specication Changes

• Service/Retrot Friendly

• Service Technicians- Quick & Accurate

Reconguration

Phone: [phone] • Fax: [phone] • setra.com © Setra Systems, Inc. All rights reserved. The Setra Systems name and logo are registered trademarks of Setra Systems, Inc.

Model MRG

Mutli-Range General Pressure Transducer

ORDERING INFORMATION

M R

G

Model Field Selectable Ranges Conguration Options

MRG Unidirectional

Pressure Ranges

0.5”W.C. 100 Pa ±0.5”W.C ±100Pa U Universal

1.0”W.C. 250 Pa ±1.0”W.C. ±250 Pa D DIN Rail C 1/2” Conduit W/ Cal Certication

2.5”W.C. 500 Pa ±2.5”W.C ±500Pa P Duct Probe D PG9 W/ Cal Certication

Bidirectional

Pressure Ranges

S Standard (Base

Mount)

1

A 1/2” Conduit

P PG9

2

2

5.0”W.C. 1,000 Pa ±5.0”W.C. ±1,000Pa

1

Code U, Universal unit includes Duct Probe and DIN Rail options.

2

Calibration is performed at highest range.

Ordering Example: MRGSA = Model MRG, Standard Conguration, with 1/2” Conduit.

DIMENSIONS GENERAL SPECIFICATIONS

Performance Data Environmental Data

Standard

1

(at constant temp) ±1.0% FS

Accuracy RSS

Compensated Range ºF (ºC) 32 to 122°F (0 to 50°C)

Thermal Eects2 %FS/ºF(ºC) 0.03 (0.054)

Maximum Line Pressure 10 PSI

Overpressure

Long Term Stability (max.) 2.0% FS/YR

Up to 10 PSI
(range dependent)

Position Eect

Zero Oset %FS/G 0.5% Loop Resistance

(Unit is factory calibrated at 0g eect in the vertical position) Approval CE & RoHS Compliant

Operating Temperature

Electrical Data

Excitation Range 13 to 30 VDC/18 to 24 VAC (Voltage

Current Consumption 30mA (max)

Mis-Wiring Reverse Excitation Protection

Field Selectable Output

Output Resistance
(Voltage Output)

Load Resistance
(Voltage Output)

(4-20mA)

3

32 to 122°F (0 to 50°C)

Output) 13 to 30 VDC (4 to 20mA
output at terminals)

4

0 to 5 V, 0 to 10V (3-wire), 4 to
20mA (2-wire)

10 Ohms (max)

10 K-Ohms (min)

0 to 800 Ohms

Physical Description Pressure Media

Case Fire-Retardant Polycarbon-

ate (UL 94 V-0 Approved),
Hinged Lid

Mounting Two Screw Holes Vertical

Position

Electrical Connection Block Removable Screw Terminal

Pressure Fitting 3/16” O.D. Barbed Brass

Zero Push Button

Span Push Button

Weight (approx.) 8 Ounces

Typically air or similar non-conducting gases.

1

RSS of Non-Linearity, Hysteresis, and Non-Repeatability.

2

Units calibrated at nominal 70˚F. Maximum thermal error

computed from this datum.

3

Operating temperature limits of the electronics only. Pressure

media temperatures may be considerably higher.

4

Calibrated into a 50K ohm load, operable into a 10K ohm load

or greater.

5

Span (Full Scale) output factory set to within 1%.

6

Calibrated at factory with a 24 VDC loop supply voltage and

a 250 ohm load.

7

Span (Full Scale) output factory set to within ±0.16mA.

Specications subject to change without notice.

138.5

5.45

80.4

3.17

94.1

3.71

49.7

1.96

31.8

1.25

191.4

7.5

109.1

4.30

1/2" CONDUIT

OR

PG9

STATIC PRESSURE
PROBE

DIN RAIL
BACKPLATE

Phone: [phone] • Fax: [phone] • setra.com © Setra Systems, Inc. All rights reserved. The Setra Systems name and logo are registered trademarks of Setra Systems, Inc.

SSP-MRG Rev A 4/2015