US Dollar
Guaranteed Fitment
Always the correct part
have questions?
Always the correct part
We know our products
Fast & Reliable
Using solid state technology, there Series 3000MR and 3000MRS Photohelic switch/gauges combine the functions of a precise, highly repeatable differential pressure switch with a large easy-to-read analog pressure gauge employing the durable, time-proven Magnehelic gauge design. Switch setting is easy to adjust with large external knobs on the gauge face. Gauge 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.
Gauge 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).
Range 0-0.5" W.C., .01 minor divisions
| Switch Specifications 3000MR | |
| Switch Type | Each setpoint has 1 form C relays (SPDT) |
| Relay Contacts | (Resistive load) 1 form C rated 1.0 A at 30 VDC 0.3 A at 110 VDC Or 0.5 A at 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 |
| 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 to 280 VAC (47 to 63 Hz) |
| Switching Current | 1.0 amp (AC) maximum 0.01 mA (AC) minimum (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 |
| Set Point Adjustment | Adjustable knobs on face |
| Agency Approvals | CE |
| Gauge Specifications | |
| Service | Air and non-combustible, compatible gases |
| 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 | ?" female NPT (duplicated side and back) |
| Dimensions | 4" (101.6 mm) dial face 5 x 3?" (127 x 79.38 mm) |
| Weight | 1.8 lbs (816 g) |
All returns must be authorized. Items returned prior to authorization will not be accepted. For international customers where applicable, customers must ship any returns to us freight and duty prepaid. Return freight charges for internationsl shippments will be the responsibility of the customer.
Defective new equipment may be returned for warrantyrepair/exchange to us within (5) days of the shipment receipt date. After five (5) days, returns will be handled by direct contact and in accordance with the warranty terms of the item's manufacturer. Items that have malfunctioned due to mishandling, electrical overload, etc., will be subject to repair charge.
Non defective new equipment will be authorized for return within five (5) days of the shipment receipt date if the equipment is still in new, re-sellable condition with the original manual(s), accessories, packing material and carton. We reserve the right to reject returnsin which there is no original packaging, missing accessories, damage or visible signs of usage of the item. A restocking fee of up to 25% of purchase price may apply. Special orders and dangerous goods are non-returnable.
(Do not write anytingon the manufacturer's original package or use as a shipping carton. Include all accessories, manuals and warranties.)
Please, include a copy of the packing list or invoice with a reason for the return. Your return authorization number is valid for thirty (30) days.
We can ship to both US and Canada. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will charge a flat rate shipping for your items.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
Not Applicable
| Condition: | NA |
Defective new equipment may be returned for warrantyrepair/exchange to us within (5) days of the shipment receipt date. After five (5) days, returns will be handled by direct contact and in accordance with the warranty terms of the item's manufacturer. Items that have malfunctioned due to mishandling, electrical overload, etc., will be subject to repair charge.
Non defective new equipment will be authorized for return within five (5) days of the shipment receipt date if the equipment is still in new, re-sellable condition with the original manual(s), accessories, packing material and carton. We reserve the right to reject returnsin which there is no original packaging, missing accessories, damage or visible signs of usage of the item. A restocking fee of up to 25% of purchase price may apply. Special orders and dangerous goods are non-returnable.
(Do not write anytingon the manufacturer's original package or use as a shipping carton. Include all accessories, manuals and warranties.)
Please, include a copy of the packing list or invoice with a reason for the return. Your return authorization number is valid for thirty (30) days.
