Photohelic®switch/The table is a combination of multi-function, high-repetable pressure switches and precision and time verificationMagnehelic®Designed differential pressure gauges.Photohelic®Positive pressure, negative pressure, and differential pressure of air and compatible gases can be measured and controlled. Standard rated pressure25psig(1.7bar), Optional pressure range35psig(2.4bar)or80psig(5.5bar).36000SSimply measuring single positive pressure and can be achieved6000psig(413bar)The rating is9000psig(620bar).
Two photoelectric transistors drivenDPDTRelay for low/High limit control. The setting point indicator is easily adjusted by the knob through the panel. Single set point dead zone is only a pointer width-Less than full scale1%. Set point interlock to provide different dead zones-Used to control fans, dampers, etc. The readings of the instrument are continuous, unrelated from the switching action, even if they are powered, read. Range from0-.25" (0-6 mm) w.c.arrive 30 psi (21 bar);6000 psig (413bar).
PHOTOHELICSensor--working principle
Typical applications, theseDwyerswitch/The table is controlled between high and low voltage setting points. When the pressure changes reaches the pressure of the high electrode or low limit set, the infrared light spiral drive shutter is limited to the optocoupler. The optocoupler signal is enlarged.DPDTRelay generates a switching action. Dead zone is full1%Or smaller--Sufficient guarantees absolute, no vibration work.
Relay-Transformer characteristics
The plastic housing protects all electrical components. Solid state integrated circuits are assembled on an epoxy glass circuit board and an automatic extinguishing end plate.(ForA3000series)
application--PHOTOHELICswitch/surface
Pressure Switch/Table provides you with pressure indication and high/Low limit switch control. forOEMAnd on-site applications,Photohelicswitch/Table is used in air conditioning systems, clean rooms, hydraulic and pneumatic control systems, material processing equipment, alarms, and controlled exhaust emissions systems, control of pressure and blood flow monitoring and respiratory testing of gas structure.
Specification
Table specifications
medium: Air and non-flammable, compatible gases
Precision:70 ° F(21.1 ° C)Full range±2%;(A3000-0Full-scale time±3%).(A3000-00Full-scale time±4%)
preset pressure:-20″Hgarrive 25 psig(-0.677bararrive1.72 bar); MPMedium pressure optional:35 psig(2.41 bar);HPHigh pressure optional:80 psig(5.52 bar). 36003S-36010S:150psig(10.34bar);36020SAnd higher:1.2Full scale pressure
temperature range:20-120 ° F(-6.67-48.9 ° C),Low temperature
Pressure connection: 1/8"FNPTNegative thread
size:4inch(101.6mm)Diameter dial, 5" (127 mm) O.D. x 8-1/4" (209.55 mm)
weight:4lb (1.81 KG)
Switch specifications
Switch type: Each contact has2PieceCConcatenation relay(DPDT)
Repeatability:±1%
Power rating:10A@28VDC,10A@120,240VAC
Electrical connections: Screw connector, only copper joints167°F (75°C)
Power requirements:120 VAC, 50/60 Hz; 240 VAC& 24 VACPower options
Installation orientation: Vertical installation,Other orientation consultation factories
Set point adjustment: Adjusting torsion on panel
Institutional certification:UL, CSA, CE.
Standard model:
Use two photoelectric transistors and twoDPDTRelay is used in high/Low alarm or restriction control. When the pointer of the table is moved to the left side of the set point, the current of the relay is cut; the relay will turn on the power when the pointer of the table moves to the right of the set point. Automatic failure protection is provided for power outages or no pressure.
Option
Single point—Right set point, used for elevated or drop operations of pressure.
OEMtype—For other models, fewer relays and transformer elements and housings can be selected, but including infrared diodes, photoelectric transistors, sunscreens, and set pointers, suitable for orders./Double contact.
Remote installation relay—The relay canopy instrument can be remotely installed, the standard length is5Feet, you can order other cable lengths you need.
Enhanced knob—It is possible to obtain a low temperature option, special scale, voltage, and other features and modifications.
Special shell—All-weather rain shell(NEMA 4)Explosion-proof(NEMA 7 CD,9 EFG;NEC Class I,DIV 1&2,Gr C, D; Class II,DIV 1&2 Gr E,F,G; Class III). For detailed size maps, please contact Customer Service
High, low self-locking circuit—Dwyer-PhotohelicPressure Switch/The table circuit wiring can be three types of high self-locking circuits, low self-locking circuits and high low lock circuits. That is to say, once the device triggers, they will remain their state until manually reset. It is especially useful for the alarm and signal applications, and the alarm or signal control is used in this case.PhotohelicPressure Switch/Tables or other methods are completed. Attached with a complete wiring and operating instructions. Manual reset requires a dry circuit button such asDwyer Part A-601.
Differential pressure switch/surface
Dial and front cover (With set point buttons and zeroing screws): Remove the dial and front cover, you can revealPhotothelicSet the point mechanism, front cover is a magical carbonate plastic.
Pointer and bell: Installed on spirals and balanced codes. When the shutter is opened, the photoelectric transistor is exposed to the infrared rays, and the photoelectric transistor can be taken up according to the pressure used.
Screen: Effectively protect the photoelectric transistor to avoid irradiation of outdoor glare. Under the cover of the shader screen, the pointer can be freely swing, and the dial is very clear and clean.
Limit switch: Reliable, long service life. It is directly attached to the set pointer, but they separately calibrate to ensure switching accuracy.
Bendable drive shaft: Connected to the set point knob.
Zero screw: Connected to the screw on the dial.
plastic shell: Protect electronic components and electrical connections.
Polycarbonate interface or terminal boardHave fire resistance.
Press the circuit board on the oxide glass: Good performance, durable.
Load relay:DPDTWith self-locking features, wide application.
electric:50/60Hz, 110VCurrent, its voltage allows up and down floats10%. Special instruments can use other voltages.
Switch setting pointer: The position of the switch is displayed.
Spring load friction clutch: Prevent the operator''''''''''''''''s damage setting mechanism.
A3000 Series Photohelic and 43000 Series Capsu-PhotoheLic Pressure Switch / Table |
model | Range (inch water column) | model | Measurement(psi) | model | Range (mm water column) | model | Source (PA) | A3000-00 | 0-0.25 | A3201 | 0-1 | *A3000-6MM | 0-6 | *A3000-60Pa | 0-60 | A3000-0 | 0-0.50 | A3202 | 0-2 | *A3000-10MM | 0-10 | A3000-125Pa | 0-125 | A3001 | 0-1.0 | A3203 | 0-3 | A3000-25MM | 0-25 | A3000-250Pa | 0-250 | A3002 | 0-2.0 | A3204 | 0-4 | A3000-50MM | 0-50 | A3000-500Pa | 0-500 | A3003 | 0-3.0 | A3205 | 0-5 | A3000-80MM | 0-80 | A3000-750Pa | 0-750 | A3004 | 0-4.0 | A3210** | 0-10 | A3000-100MM | 0-100 | Zero point center scale | A3005 | 0-5.0 | A3215** | 0-15 | Zero point center scale | A3006 | 0-6.0 | A3220** | 0-20 | *A3300-250Pa | 125-0-125 | A3008 | 0-8.0 | A3230*** | 0-30 | *A3300-20MM | 10-0-10 | *A3300-500Pa | 250-0-250 | A30010 | 0-10 | ** MP medium voltage, *** HP high voltage option | *A3300-30MM | 15-0-15 | model | Program (KPA) | A30015 | 0-15 | Only for capsu-photohelic | model | Range (cm water) | A3020 | 0-20 | A3000-1kPa | 0-1 | A3025 | 0-25 | 43230S | 0-30 | A3000-15CM | 0-15 | A3000-1.5kPa | 0-1.5 | A3030 | 0-30 | 43240S | 0-40 | A3000-20CM | 0-20 | A3000-2kPa | 0-2 | A3040 | 0-40 | 43260S | 0-60 | A3000-25CM | 0-25 | A3000-3kPa | 0-3 | A3050 | 0-50 | 43280S | 0-80 | A3000-50CM | 0-50 | A3000-4kPa | 0-4 | A3060 | 0-60 | 432100S | 0-100 | A3000-80CM | 0-80 | A3000-5kPa | 0-5 | A3080 | 0-80 | 432200S | 0-200 | A3000-100CM | 0-100 | A3000-8kPa | 0-8 | A3100 | 0-100 | 432300S | 0-300 | A3000-150CM | 0-150 | A3000-10kPa | 0-10 | A3150 | 0-150 | Photohelic - single voltage | A3000-200CM | 0-200 | A3000-15kPa | 0-15 | Only for capsu-photohelic | A3000-250CM | 0-250 | A3000-20kPa | 0-20 | *A36003S | 0-30 | A3000-300CM | 0-300 | A3000-25kPa | 0-25 | 43200 | 0-200 | *A36006S | 0-60 | Zero point center scale | A3000-30kPa | 0-30 | 43300 | 0-300 | *A36010S | 0-100 | Zero point center scale | 43400 | 0-400 | *A36020S | 0-200 | A3300-4CM | 2-0-2 | 43500 | 0-500 | *A36030S | 0-300 | A3300-10CM | 5-0-5 | A3300-1kPa | 0.5-0-0.5 | Zero point center scale | *A36060S | 0-600 | A3300-30CM | 15-0-15 | A3300-3kPa | 1.5-0-1.5 | *A36100S | 0-1000 | Special purpose Timing disk model: 3401, square root, special range Timing Dish model: 3402: blank scale, special range Model: A3000-00N, Range: -. 05 ~ +2.0 inch water column for indoor pressure monitoring. | *A3300-0 | 0.25-0-0.25 | *A36300S | 0-3000 | *A3301 | 0.5-0-0.5 | *A36600S | 0-6000 | A3302 | 1-0-1 | model (Required Piercing tube) | Range (inch water column) Air volume (f.p.m)
| A3304 | 2-0-2 | Precautions: If this use is consistent with the components that are not listed, the standard 3000 Photohelic switch / table can be used in the insurance laboratory with industrial control panels. | A3310 | 5-0-5 | *A3000-00AV | 0-.25/300-2000 | A3320 | 10-0-10 | *A3000-0AV | 0-.50/500-2800 | A3330 | 15-0-15 | *A3001AV | 0-1.0/500-4000 | Less than or equal to 0.5 inch water column all ranges(Or equivalent of metric units)They are calibrated, and the dial can be used in vertical positions. | | | *A3002AV | 0-2.0/1000-5600 | | | *A3010AV | 0-10/2000-12500 | Options and attachments: Options as a suffix, such as: A3001 -SR, single contact(set point)------------ -Ols, OEM ---------------- -RMR, long-distance installation relay -Tamp to prevent collision buttons -MP, medium pressure; -HP, high pressure; -Lt, low temperature(-20 ° F); A-601, manual reset switch. |
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