Series 3000MR/3000MRS Photohelic® Switch/Gage

Combines Differential Pressure Gage with Low/High Set-points

Using solid state technology, the Series 3000MR and 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 flush mounted in 4-13/16" (122 mm) hole 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.

Gage accuracy is ±2% of full scale and switch repeatability is ±1%. Switch deadband is one pointer width - less than 1% of full scale. 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).

Included Accessories: 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); and (3) 6-32 x 5/16" RH machine screws (surface mounting).

Please see SERIES AT23000MR/MRS for ATEX approved.

Product Applications

  • Fan Control
  • Damper Control
  • Environmental Pollution Control

Models & Ordering

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Build Your Custom Part. Use our Product Configurator

Model Number Description Usually Ships Price Order
3000MR-0 Pressure switch/gage, range 0-0.5" w.c., .01 minor divisions. Same Day $299.00 Order
3001MR Pressure switch/gage, range 0-1" w.c., .02 minor divisions. Same Day $299.00 Order
3002MR Pressure switch/gage, range 0-2" w.c., .05 minor divisions. Same Day $299.00 Order
3003MR Pressure switch/gage, range 0-3" w.c., .10 minor divisions. Same Day $299.00 Order
3005MR Pressure switch/gage, range 0-5" w.c., .10 minor divisions. Same Day $299.00 Order
3010MR Pressure switch/gage, range 0-10" w.c., .20 minor divisions. Same Day $299.00 Order
3015MR Pressure switch/gage, range 0-15" w.c., .50 minor divisions. Same Day $299.00 Order
3020MR Pressure switch/gage, range 0-20" w.c., .50 minor divisions. Same Day $299.00 Order
3030MR Pressure switch/gage, range 0-30" w.c., 1.0 minor divisions. Less than 1 Week $299.00 Order
3050MR Pressure switch/gage, range 0-50" w.c., 1.0 minor divisions. Same Day $299.00 Order
3100MR Pressure switch/gage, range 0-100" w.c., 2.0 minor divisions. Same Day $299.00 Order

Can't find what you need? Try our Product Configurator

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).
Weight:
1.8 Ib (816 g).

SWITCH SPECIFICATIONS 3000MR
Switch Type:
Each setpoint 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.
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 setpoint 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.

Options

  • -TAMP Tamper-Proof Knobs, require special spanner-type key (included) to adjust set points.
  • -LT Low Temperature Option for use under 20°F (-6.7°C).
  • -MP Medium Pressure increases maximum rated pressure to 35 psig (2.41 bar).
  • -HP High Pressure increases maximum rated pressure to 80 psig (5.5 bar).
  • -WP Weatherproof housing option.

Accessories

Model Number Description Usually Ships Price Order
A-298 Flat aluminum bracket for flush mounting Photohelic® & Capsuhelic® gages, 603A, 605, and 3000MR. Same Day $27.75 Order
A-370 Flush mount bracket used with: Capsuhelic®, Series 631B Transmitter, Series EDA. Bracket is then surface mounted. Steel with gray hammertone epoxy finish. 1-2 Weeks $33.75 Order
A-600 R/C snubber (recommended for inductive loads like a solenoid or contactor). Same Day $18.50 Order

Videos

Model Chart

 
EXAMPLE 3000 MR 00 24VAC Series 3000MR-00-24VAC Photohelic® Switch/Gage, range 0-.025" w.c., electromechanical relays, with 24VAC relay pack.
RELAY TYPE   MR
MRS
    Electromechanical Relays
Solid State Relays
RANGE 3000
3000
3001
3002
3003
3004
3005
3006
3008
3010
3015
3020
3025
3030
3040
3050
3060
3080
3100
3150
3000
3300
3301
3302
3304
3310
3320
3330
3340
3360
3380
3000
3000
3201
3202
3203
3204
3205
3210
3215
3220
3230
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3300
3300
3300
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3300
3300
3300
3300
3000
3000
3000
3000
3000
3000
3300
3300
3300
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
3300
3300
3300
3000
3000
3000
  00
0


















00N
0





 
 


00AV
0AV









5HG
10HG
15HG
20HG
25HG
30HG
40HG
50HG
60HG
6MM
10MM
20MM
25MM
30MM
50MM
80MM
100MM
150MM
250MM
300MM
500MM
20MM
30MM
40MM
1CM
2CM
5CM
8CM
10CM
15CM
20CM
25CM
30CM
40CM
50CM
80CM
100CM
150CM
200CM
250CM
300CM
500CM
4CM
10CM
20CM
30CM
60PA
125PA
200PA
250PA
500PA
750PA
120PA
250PA
500PA
1KPA
1.5KPA
2KPA
3KPA
4KPA
5KPA
8KPA
10KPA
15KPA
20KPA
25KPA
30KPA
40KPA
50KPA
1KPA
2KPA
3KPA
20MBAR
100MBAR
500MBAR
  0-0.25" w.c.
0-0.5" w.c.
0-1" w.c.
0-2" w.c.
0-3" w.c.
0-4" w.c.
0-5" w.c.
0-6" w.c.
0-8" w.c.
0-10" w.c.
0-15" w.c.
0-20" w.c.
0-25" w.c.
0-30" w.c.
0-40" w.c.
0-50" w.c.
0-60" w.c.
0-80" w.c.
0-100" w.c.
0-150" w.c.
.05-0-.2" w.c.
.25-0-.25" w.c.
.5-0-.5" w.c.
1-0-1" w.c.
2-0-2" w.c.
5-0-5" w.c.
10-0-10" w.c.
15-0-15" w.c.
20-0-20” w.c.
30-0-30“ w.c.
40-0-40” w.c.
0-.25" w.c. & 300-2000 FPM AV
0-.5" w.c. & 500-2800 FPM AV
0-1 psid
0-2 psid
0-3 psid
0-4 psid
0-5 psid
0-10 psid
0-15 psid
0-20 psid
0-30 psid
0-5" Hg
0-10" Hg
0-15" Hg
0-20" Hg
0-25" Hg
0-30" Hg
0-40" Hg
0-50" Hg
0-60" Hg
0-6 mm w.c.
0-10 mm w.c.
0-20 mm w.c.
0-25 mm w.c.
0-30 mm w.c.
0-50 mm w.c.
0-80 mm w.c.
0-100 mm w.c.
0-150 mm w.c.
0-250 mm w.c.
0-300 mm w.c.
0-500 mm w.c.
10-0-10 mm w.c.
15-0-15 mm w.c.
20-0-20 mm w.c.
0-1 cm w.c.
0-2 cm w.c.
0-5 cm w.c.
0-8 cm w.c.
0-10 cm w.c.
0-15 cm w.c.
0-20 cm w.c.
0-25 cm w.c.
0-30 cm w.c.
0-40 cm w.c.
0-50 cm w.c.
0-80 cm w.c.
0-100 cm w.c.
0-150 cm w.c.
0-200 cm w.c.
0-250 cm w.c.
0-300 cm w.c.
0-500 cm w.c.
2-0-2 cm w.c.
5-0-5 cm w.c.
10-0-10 cm w.c.
15-0-15 cm w.c.
0-60 Pa
0-125 Pa
0-200 Pa
0-250 Pa
0-500 Pa
0-750 Pa
60-0-60 Pa
125-0-125 Pa
250-0-250 Pa
0-1 kPa
0-1.5 kPa
0-2 kPa
0-3 kPa
0-4 kPa
0-5 kPa
0-8 kPa
0-10 kPa
0-15 kPa
0-20 kPa
0-25 kPa
0-30 kPa
0-40 kPa
0-50 kPa
.5-0-.5 kPa
0-2 kPa
1.5-0-1.5 kPa
0-20 mbar
0-100 mbar
0-500 mbar
OPTIONS       24VAC
AT
COO
DEED
EDED
EDDE
EXPL
G
HC
HP
LT
M
MP
NIST
R
CBL3
CBL5
CBL10
CBL15
CBL20
CBL25
CBL30
CBL40
CBL50
CBL60
CBL70
CBL80
CBL90
CBL100
SF
ST
TA
TAMP
WP
VIT
Y
24 VAC Relay Pack
Aluminum Tag
Certificate of Origin
Energizing (set point low: de-energizing/energizing; set point high: energizing/de-energizing)
Energizing (set point low: energizing/de-energizing; set point high: energizing/de-energizing)
Energizing (set point low: energizing/de-energizing; set point high: de-energizing/energizing)
Explosion-proof Housing with Breather & Drain
Green Scale Overlay
Horizontal Calibration (90° face up)
High Pressure
Low Temperature
Mirror Scale Overlay
Medium Pressure
NIST Certificate of Calibration
Red Scale Overlay
3 Ft. Cable (valid with -MR only)
5 Ft. Cable
10 Ft. Cable
15 Ft. Cable
20 Ft. Cable
25 Ft. Cable
30 Ft. Cable
40 Ft. Cable
50 Ft. Cable
60 Ft. Cable
70 Ft. Cable
80 Ft. Cable
90 Ft. Cable
100 Ft. Cable
Silicon Free
Stainless Steel Tag
Tilt Angle from Vertical in Degrees (-90 to 90)
Tamperproof Knobs
Weatherproof Housing
FKM Elastomers
Yellow Scale Overlay

Product Literature

Manuals

Catalog Pages

Approvals

Drawings

Questions

Question
What restrictions, if any, are imposed for the Magnehelic® and Photohelic® gages in vacuum service?
Answer
In applications involving higher vacuums than 20" Hg, leakage due to gage housing porosity becomes the limiting factor.
Question
What is the NEMA rating of a Photohelic®?
Answer
Our standard is considered to be NEMA 1 rated for general purpose. We do have weatherproof (NEMA 4X) and explosion-proof (NEMA 7 & 9) enclosures available.
Question
Your catalog says the A3000 series photohelic needs 120VAC, but "Special units for other voltages are available." Does that mean I can order a 24VDC model? If so, what would the part no. be? Thanks
Answer
We do offer two voltage options which are -24VAC: 24 VAC Relay Pack or -240 VAC: 220/240 VAC Relay Pack. Unfortunately we do not offer a VDC option with the A3000 Series. However, you could consider the Series MP, Mini-Photohelic Differential Pressure Switch/Gage or the Series 3000 MR or 3000 MRS which all offer the 24 VDC Power Requirement.
Question
What is the power consumption (watts) for a model 3000mr photohelix?
Answer
The power consumption for the Series 3000MR Photohelic switch/gage is 3 Watts.

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