Diversified power management company and global technology leader in electrical systems for power quality, distribution and control; hydraulics components, systems and services for industrial and mobile equipment; aerospace fuel, hydraulics and pneumatic systems for commercial and military use; and truck and automotive drivetrain and powertrain systems for performance, fuel economy and safety.
After you have consented to cookies by clicking on the 'Accept' button, this web site will embed advertisement source code from Google Adsense, an online advertising service of Google LLC ('Google') and you will see personalized advertisements by Google and their ad technology partners ( here a list). Technically Internet cookies and third party cookies are then used to share information about.
Debit and credit app. Shop by department, purchase cars, fashion apparel, collectibles, sporting goods, cameras, baby items, and everything else on eBay, the world's online marketplace. 0.1 G RMS from 5 to 500 Hz, 10 minutes each axis, 3 axes, 30 minutes total Nonoperating. 2.0 G RMS from 5 to 500 Hz, 10 minutes each axis, 3 axes, 30 minutes total. Regulatory Certifications Electromagnetic compatibility. 89/336/EEC Safety. UL61010, CSA-22.2 No. 1010.1, EN61010-1, IEC61010-1.
3-in-1 Indicating Gage, Lo-limit and Hi-limit Control
The Series A3000 Photohelic® Switch/GagesQcad professional 3 16 5 download free. function as versatile, highly repeatable pressure switches combined with a precise pressure gage employing the time-proven Magnehelic® gage design. The Photohelic® switch/gage measures and controls positive, negative or differential pressures of air and compatible gases. Standard models are rated to 25 psig (1.7 bar) with options to 35 (2.4) or 80 (5.5 bar) psig. Two phototransistor actuated, DPDT relays are included for low/high limit control. Easy to adjust set point indicators are controlled by knobs located on the gage face. Individual set point deadband is one pointer width - less than 1% of full scale. Set points can be interlocked to provide variable deadband - ideal for control of fans, dampers, etc. Gage reading is continuous and unaffected by switch operation, even during loss of electrical power. Choose from full scale pressure ranges from a low 0-.25 in (0-6 mm) w.c. up to 30 psi (21 bar).
Please see SERIES AT3A3000 for ATEX approved.
Top mac os. DID YOU KNOW that you can add YOUR logo to our Photohelic® Switch/Gage, call customer service for details. Find any file 2 1 12. Macsome spotify downloader 1 0 0 full.
Product Applications
Air Conditioning Systems
Clean Rooms
Fume Exhaust Systems
GAGE SPECIFICATIONS
Service:
Air and non-combustible, compatible gases.
Wetted Materials:
Consult Factory.
Accuracy:
±2% of FS at 70°F (21.1°C). ±3% on -0 and ±4% on -00 models.
Pressure Limits:
-20' Hg. to 25 psig (-0.677 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). -20 to 120°F (-28 to 48.9°C) with low temperature option.
Diaphragm in vertical position. Consult factory forother position orientations.
Set Point Adjustment:
Adjustable knobs on face.
Agency Approvals:
CE, CSA, UL.
Bezel and front cover (with set point knobs and zero adjustment screw) removed to expose Photohelic® switch/gage set point mechanism. Cover is clear polycarbonate plastic.
Gage pointer and light shutter are mounted on helix and balancing counterweight. Shutter passes through slot in optical limit switch to expose phototransistors to integral infrared light source or mask them depending on applied pressure.
Light shield effectively protects phototransistors from strong outside light sources yet allows free pointer movement. It also gives interior a clean 'finished' look.
Optical limit switches are used for reliability and long service life. Attached directly to set pointers, they are individually aligned to assure precise switching accuracy.
Semi-Flexible drive shaft connects to set point knobs.
Zero adjustment screw connects to screw in cover to adjust zero pressure reading.
Plastic enclosure protects electronic components and electrical connections.
Polycarbonate connection or terminal board is self-extinguishing.
Glass epoxy printed circuit boards for durability and permanence.
Load relays are DPDT with latching feature for maximum application versatility.
Electronics are designed to operate on 50/60 Hz, 120 volt current with 10% over or under voltage. Special units for other voltages are available.
Switch set pointers show switch settings at all times.
Spring loaded friction clutch prevents operator damage of set point mechanism.
3-in-1 instrument allows the reduction of several instruments with one product, saving inventory, installation time and money.
Patented design and 1% full scale dead band provides quick response to pressure changes means no delay in switching and chatter-free operation.
A wide range of models that can meet pressure measurement specifications from low to very high.
-SR Single contact, right set point, for actuation on increasingor decreasing pressure.
-OLS OEM Model, less relay and transformer components and housing but including infared diodes and phototransistor(s), light shutter and set pointer(s). For single or double contact.
-RMR Remote-Mounted Relay, relay pack may be mounted remotelyfrom gage. Standard length is 5 ft. For other lengths, specify cablelength required.
-TAMP Tamper-proof knobs, low temperature option, special scales, voltagesand other features and modifications are available.
Special Housings available include Weatherproof (NEMA 4) and Explosion-proof(NEMA 7 & 9; NEC Cl I, Gr C&D; Cl II, Gr E, F&G; Cl III). ContactCustomer Service for detailed dimension drawings.
Scale No. 3401 Square Root Specify Range.
Scale No. 3402 Blank Scale Specify Range.
High & Low Latching Circuits. Dwyer Photohelic® switch/gages can be wired for high-latching, low-latching orcombination high-low latching circuits. That is, the equipment willhold in these respective positions once activated and until manually reset.This canbe particularly useful for alarm and signal applications where control is accomplishedby another Photohelic® switch/gage or other means. Completewiring and operational instructions are included. Where manual reset is requireda drycircuit push button such as DwyerPart A-601 should be used.
Model Number
Description
A-601
Manual reset switch.
A-298
Flat aluminum bracket for flush mounting Photohelic® & Capsuhelic® gages, 603A, 605, and 3000MR.
EXAMPLE
A3000-00N
24VAC
Series A3000-00N-24VAC Photohelic® Pressure Switch/Gage, range .05-0-0.2' w.c., with 24VAC relay pack.
.05-0-.2' w.c. 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. .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. 0-.25' w.c. & 300-2000 FPM AV 0-.5' w.c. & 500-2800 FPM AV 0-1' w.c. & 500-4000 FPM AV 0-2' w.c. & 1000-5600 FPM AV 0-10' w.c. & 2000-12500 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. 0-50 mm w.c. 0-80 mm w.c. 0-100 mm w.c. 0-150 mm w.c. 0-200 mm w.c. 0-250 mm w.c. 0-300 mm w.c. 0-400 mm w.c. 0-500 mm w.c. 0-5000 mm w.c. 10-0-10 mm w.c. 15-0-15 mm w.c. 0-200 mm Hg 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. 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 0-250 Pa 0-500 Pa 0-750 Pa 125-0-125 Pa 250-0-250 Pa 0-0.5 kPa 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 0.5-0-0.5 kPa 1-0-1 kPa 1.5-0-1.5 kPa 0-5 mbar 0-25 mbar
OPTIONS
24VAC 240VAC AT COO DEED EDED EDDE ED EXPL G HC HL HP LH LL OLS LT M MP NIST R RMR RMR1 RMR2 RMR3 RMR10 RMR15 RMR20 RMR25 RMR30 RMR40 RMR50 RMR60 RMR70 RMR80 RMR90 RMR100 SRH SRL ST TA TAMP WP Y
24 VAC Relay Pack 220/240 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) Energizing (set point: energizing/de-energizing) Explosion-proof Housing with Breather & Drain Green Scale Overlay Horizontal Calibration (90° face up) Latching Option (high/low) High Pressure Latching Option (low/high) Latching Option (low/low) Less Relay Low Temperature Mirror Scale Overlay Medium Pressure NIST Certificate of Calibration Red Scale Overlay Remote Mounted Relay Std. 5 Ft. Remote Mounted Relay 1 Ft. Remote Mounted Relay 2 Ft. Remote Mounted Relay 3 Ft. Remote Mounted Relay 10 Ft. Remote Mounted Relay 15 Ft. Remote Mounted Relay 20 Ft. Remote Mounted Relay 25 Ft. Remote Mounted Relay 30 Ft. Remote Mounted Relay 40 Ft. Remote Mounted Relay 50 Ft. Remote Mounted Relay 60 Ft. Remote Mounted Relay 70 Ft. Remote Mounted Relay 80 Ft. Remote Mounted Relay 90 Ft. Remote Mounted Relay 100 Ft. Single Right Hi Latching Single Right Lo Latching Stainless Steel Tag Tilt Angle from Vertical in Degrees (-90 to 90) Tamperproof Knobs Weatherproof Housing Yellow Scale Overlay
Manuals
Catalog Pages
Question
Are air velocity scales available?
Answer
Yes, the information we require to supply the proper range is the velocity (fpm or m/s) or velocity pressure (inches of water or kpa) and density of air (lb/ft3 or g/cm3).
Related
Series 2000
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.
Related
Series A3000
Question
What is an RMR Photohelic®?
Answer
The RMR option is for a remote mounted relay, where the relay pack is seperate from the gage. The unit comes with a standard interconnecting cable that is 3 feet long.
Related
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.
0 
Star