Dwyer Instruments SERIES 3000MR, SERIES 3000MRS Catalog Page

ACED

2-1/16

SERIES 3000MR & 3000MRS

PHOTOHELIC® SWITCH/GAGES

Combines Differential Pressure Gage with Low/High Set-Points, Compact Size

PRESSURE

PRESSURE CONNECTION

Note: Shown with optional -SS bezel.

Backward compatible

Using solid state technology, the Series 3000MR & 3000MRS Photohelic® Switch/ Gages combine the functions of a precise, highly repeatable differential pressure switch with a large easy-to-read analog pressure gage employing the durable, time-proven Magnehelic® gage design. Switch setting is easy to adjust with large external knobs on the gage face. Gage reading is unaffected by switch operation will indicate accurately even if power is interrupted. Solid state design now results

in greatly reduced size and weight. Units can be ush mounted or surface mounted

with hardware supplied. 3000MR models employ versatile electromechanical relays with gold over silver contacts - ideal for dry circuits. For applications requiring high cycle rates, choose 3000MRS models with SPST (N.O.) solid state relays. All models provide both low and high limit control and include 18-inch (45 cm) cable assemblies for electrical connections. Compatible with air and other non-combustible, non-corrosive gases, they can be used in systems with pressures to 25 psig (1.725 bar). Optional construction is available for use to either 35 psig (2.42 bar) or 80 psig (5.51 bar).

FEATURES/BENEFITS

• Gage reading unaffected by switch operation and will continue to read pressure even during power loss

• Zero and range adjustments outside of gage means no disassembly in normal service

• Solid-state design allows for switching in high cycle rate applications without degradation

• Optional stainless steel bezel is the same installation diameter as Magnehelic® gage

and simplies eld upgrade to Photohelic® switch/gage

APPLICATIONS

• Pneumatic conveying

• Air conditioning systems

• Clean rooms

with Magnehelic® gage.

MODEL CHART

Model

Differential Pressure

Gages/Switches, Dial

3000MR-00 3000MR-0 3001MR 3002MR 3003MR 3005MR 3010MR 3015MR 3020MR 3030MR 3050MR 3100MR

Model 3000MR-60PA**

3000MR-125PA* 3000MR-250PA 3000MR-500PA

Model 3000MR-1KPA

3000MR-3KPA 3000MR-4KPA

Model 3000MR-6MM**

3000MR-10MM* 3000MR-25MM 3000MR-50MM 3000MR-100MM

Model

Range, in w.c.

0-0.25 0-0.5 0-1.0 0-2.0 0-3.0 0-5.0 0-10 0-15 0-20 0-30 0-50 0-100

Range, Pascals

0-60 0-125 0-250 0-500

Range, kPa

0-1.0 0-3.0 0-4.0

Range, mm w.c.

0-6 0-10 0-25 0-50 0-100

Range, cm w.c.

Minor Divs. Model

.005

3000MRS-00**

.01

3000MRS-0*

.02

3001MRS

.05

3002MRS

.10

3003MRS

.10

3005MRS

.20

3010MRS

.50

3015MRS

.50

3020MRS

1.0

3030MRS

1.0

3050MRS

2.0

3100MRS

Minor Divs. Model

2.0

3000MRS-60PA**

5.0

3000MRS-125PA*

5.0

3000MRS-250PA

10.0

3000MRS-500PA

Minor Divs. Model

.02

3000MRS-1KPA

.10

3000MRS-3KPA

.10

3000MRS-4KPA

Minor Divs. Model

.20

3000MRS-6MM**

.50

3000MRS-10MM*

.50

3000MRS-25MM

1.0

3000MRS-50MM

2.0

3000MRS-100MM

Minor Divs. Model

Range, in w.c.

0-0.25 0-0.5 0-1.0 0-2.0 0-3.0 0-5.0 0-10 0-15 0-20 0-30 0-50 0-100

Range, Pascals

0-60 0-125 0-250 0-500

Range, kPa

0-1.0 0-3.0 0-4.0

Range, mm w.c.

0-6 0-10 0-25 0-50 0-100

Range, cm w.c.

Minor Divs.

.005 .01 .02 .05 .10 .10 .20 .50 .50

1.0

2.0

Minor Divs.

2.0

5.0

10.0

Minor Divs.

.02 .10 .10

Minor Divs.

.20 .50 .50

1.0

2.0

Minor Divs.

3000MR-20CM 0-20 .50 3000MRS-20CM 0-20 .50

*±3% of full-scale. **± 4% of full-scale.

Note: To order, select either MR or MRS sufx to Series 3000 number. Examples: 3001MR or 3001MRS

DWYER INSTRUMENTS, INC. | 42

PRESSURE CONNECTION

SPECIFICATIONS GAGE SPECIFICATIONS

Service: Air and non-combustible,

compatible gases.

Wetted Materials: Consult factory. Accuracy: ±2% of FS (3000-0 ±3% of

FS). (3000-00 ±4% of FS).

Pressure Limit: -20˝ Hg. to 25 psig

(-0.677 bar to 1.72 bar). MP option: 35

psig (2.41 bar), HP option: 80 psig (5.52

bar). Temperature Limits: 20 to 120°F (-6.67 to 48.9°C).

Process Connections: 1/8˝ female NPT

(duplicated side and back).

Size: 4˝ (101.6 mm) dial face, 5˝ (127 mm) OD x 3-1/8˝ (79.38 mm); -SS bezel: 4-3/4˝ (120.7 mm) OD x 2-21/32 (67.5

mm).

Weight: 1.8 Ib (816 g).

SWITCH SPECIFICATIONS 3000MR Switch Type: Each set point has 1 form

C relays (SPDT). Relay Contacts: (Resistive load) 1 form C rated 1.0A @ 30 VDC, 0.3A @ 110 VDC or 0.5A @ 125 VAC. Gold over clad silver - suitable for dry circuits.

ACCESSORIES Model Description A-298

A-370

A-600 ACCESSORIES - STANDARD Description

Mounting ring, snap ring, 18˝ (45 cm) cable assembly, (2) 3/16˝ tubing to 1/8˝ NPT adapters, (2) 1/8˝ NPT pipe plugs, (4) 6-32 x 1-1/4˝ RH machine screws (panel mounting), (3) 6-32 x 5/16˝ RH machine screws (surface mounting)

OPTIONS To order

add sufx: Description

-SS 304 brushed stainless steel bezel.

Example: 3001MR-SS

-TAMP

-LT

-MP

-HP

-WP

-NIST Example: 3001MR-NIST

[4] 6-32 HOLES EQUALLY SP

ON A 5-1/8 [130.18] B.C.

1/8 FEMALE NPT HIGH

1-1/4

[31.75]

1/8 FEMALE NPT LOW

[50.80]

[52.39]

ø4-47/64

[120.25]

ø5

[127.00]

5/8 [15.88]

2-1/2

[63.50]

Flat aluminum bracket for ush mounting 3000MR/MRS Mounting bracket ush mount 3000MR/MRS bracket. Bracket is then surface mounted. Steel with gray hammertone epoxy nish

R/C snubber recommended for inductive loads like a solenoid or contactor

standard Magnehelic® gage installation diameter

Tamper-proof knobs; require spanner key (supplied) to change set

points

Low temperature option; for use under 20°F (-6.7°C) Medium pressure; increases maximum rated pressure to 35 psig (2.41

bar)

High pressure; increases maximum rated pressure to 80 psig (5.5 bar)

Weatherproof housing option

NIST traceable calibration certicate

Process Tubing Options: See page 455 (Gage Tubing Accessories)

5/8 [15.88] PANEL MAX

3/16 [4.76]

Electrical Connections: 18˝ (46 cm)

cable assembly with 8 conductors. Optional lengths to 100´ (30.5 m). Power Requirements: 24 VDC, regulated ±10%. Mounting Orientation: Diaphragm in vertical position. Consult factory for other position orientations. Set Point Adjustment: Adjustable knobs on face.

Agency Approvals: CE.

SWITCH SPECIFICATIONS 3000MRS Switch Type: Each set point has a solid

state relay. Switching Voltage: 20-280 VAC

(47-63 Hz).

Switching Current: 1.0 amp (AC) max.,

0.01 mA (AC) min., (2) SPST NO.

Electrical Connections: 18˝ (46 cm)

cable assembly with 6 conductors, optional lengths to 100´ (30.5 m). Power Requirements: 24 VDC, regulated ±10%. Mounting Orientation: Diaphragm in vertical position. Consult factory for other position orientations. Set Point Adjustment: Adjustable knobs on face. Agency Approvals: CE.

Backward compatible with

O.D. MOUNTING RING

ø4 [101.60]

FACE

5-1/2 [139.70]