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Dwyer Instruments, Inc.

A3000 Photohelic® and 43000 Capsu-Photohelic® Gauge/Switch
Photohelic & Capsu-Photohelic
  • Combination Indicating Differential Pressure Gauge and Switch
  • Low Limit Control
  • High Limit Control
  • Indication Accuracy: 2%; Switch Repeatability 1%
  • UL/CSA Listed

    • Both Photohelic® and Capsu-Photohelic® Switch/Gages function as versatile, highly repeatable pressure switches combined with a precise pressure gage employing the time proven Magnehelic® design. The lower cost Photohelic® measures and controls positive, negative or differential pressures of air and compatible gases. Standard models are rated to 25 psig with options to 35 or 80 psig. Single pressure 360005 models measure to 6000 psig with a 9000 psig rating. The Capsu-Photohelic® employs an encapsulated sensing element for use with both liquids and gases at pressures to 500 psig. Optional cast brass case is available for water or water based liquids.

    Two photo transistor actuated,  DPDT relays are included for low/high limit control. Easy to adjust set point indicators are controlled by knobs located on gage face. Individual  set point dead band is one pointer width - less than 1% of full scale. Set points can be interlocked to provide variable dead band - ideal for control of fans, dampers, pumps, 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" w.c. up to 300 psi; single positive pressure to 6000 psig.
     

    Specifications

    Ambient Temperature 20 to 120°F (-6.7 to 49°C). Low temperature option available.
    Rated Pressure - Photohelic® -20"Hg Vacuum to 25 PSIG pressure (-67 to 1700 kPa)
    MP Option 35 PSIG (2400 kPa)
    HP Option 80 PSIG (5500 kPa)
    Models 36003S - 36010S: 150 PSIG (1000 kPa)
    Models 36020S and above: 1.5x full scale pressure
    Rated Pressure - Capsu-Photohelic® -20"Hg Vacuum to 500 PSIG (-67 to 3500 kPa)
    Accuracy - Photohelic® ±2% of full scale at 70°F (21.1°C). 
    ±3% on -0 
    ±4% on -00 models
    Accuracy - Capsu-Photohelic® ±3% of full scale at 70°F (21.1°C).
    ±2% on 43000S models
    ±4% on 43215, 43220 and 43500 models
    Gauge Connections Photohelic: 1/8" FNPT
    Capsu-Photohelic: 1/4" FNPT
    Power Required 120 VAC 50/60 Hz
    Electrical Ratings of Relays 10A @ 120 VAC
    6A @ 240 VAC
    60 Hz. Resistive
    Conduit Opening 3/4" Conduit
    Media Compatibility: Photohelic®: Air or compatible non-combustible gases only
    Capsu-Photohelic®: Air or compatible gases or liquids. Brass case option required for use with water or water based liquids
    Weight - Photohelic® 4 lbs. (1.8 kg)
    Weight - Capsu-Photohelic® 5 lbs., 12oz. (2.6 kg.)

    Part Numbers/Ranges

    Model Number
    Photohelic
    Model Number
    Capsu-
    Photohelic
    Range
    " WC
    A3000-00N
    A3000-00
    A3000-0
    A3001
    A3002
    A3003
    A3004
    A3005
    A3006
    A3008
    A3010
    A3015
    A3020
    A3025
    A3030
    A3040
    A3050
    A3060
    A3080
    A3100
    A3150
    n/a
    n/a
    n/a
    n/a
    n/a
    n/a
    43000-0
    43001
    43002
    43003
    43004
    43005
    43006
    43008
    43010
    43015
    43020
    43025
    43030
    43040
    43050
    43060
    43080
    43100
    43150
    43200
    43300
    43400
    43500
    -.05 to +.20
    0-0.25
    0-0.5
    0-1
    0-2
    0-3
    0-4
    0-5
    0-6
    0-8
    0-10
    0-15
    0-20
    0-25
    0-30
    0-40
    0-50
    0-60
    0-80
    0-100
    0-150
    0-200
    0-300
    0-400
    0-500

    Zero Centre Ranges
    A3300-0
    A3301
    A3302
    A3304
    A3310
    A3320
    A3330    		 n/a
    n/a
    43302
    43304
    43310
    43320
    43330    		 .25-0-.25
    .5-0-.5
    1-0-1
    2-0-2
    5-0-5
    10-0-10
    15-0-15
    Model Number
    Photohelic
    Model Number
    Capsu-
    Photohelic    		 Range
    mmWC
    A3000-6MM
    A3000-10MM
    A3000-25MM
    A3000-50MM
    A3000-80MM
    A3000-100MM    		 n/a
    n/a
    43000-25MM
    43000-50MM
    43000-80MM
    43000-100MM    		 0-6
    0-10
    0-25
    0-50
    0-80
    0-100

    		Zero Centre Ranges
    A3300-20MM
    A3300-30MM    		 n/a
    n/a    		 10-0-10
    15-0-15
    Model Number
    Photohelic
    Model Number
    Capsu-
    Photohelic    		 Range
    cmWC
    A3000-15CM
    A3000-20CM
    A3000-25CM
    A3000-50CM
    A3000-80CM
    A3000-100CM
    A3000-150CM
    A3000-200CM
    A3000-250CM
    A3000-300CM    		 43000-15CM
    43000-20CM
    43000-25CM
    43000-50CM
    43000-80CM
    43000-100CM
    43000-150CM
    43000-200CM
    43000-250CM
    43000-300CM    		 0-15
    0-20
    0-25
    0-50
    0-80
    0-100
    0-150
    0-200
    0-250
    0-300

    		Zero Centre Ranges
    A3300-4CM
    A3300-10CM
    A3300-30CM    		 43300-4CM
    43300-10CM
    43300-30CM    		 2-0-2
    5-0-5
    15-0-15
    Options
    Single Contact - Right set point only
    OEM Model - Less Relay, transformer and rear housing
    Tamper Proof Set Knobs
    Weather Proof Housing (NEMA 4X)
    Explosion Proof Housing (NEMA 7 & 9)
    Model Number Photohelic®
    Model Number Capsu-
    Photohelic®
    Range
    PSI
    A3201
    A3202
    A3203
    A3204
    A3205
    A3210*
    A3215*
    A3220*
    A3230**
    n/a
    n/a
    n/a
    n/a
    n/a
    n/a
    n/a
    		 43201
    43202
    43203
    43204
    43205
    43210
    43215
    43220
    n/a
    43230S
    43240S
    43260S
    43280S
    432100S
    432200S
    432300S    		 1
    2
    3
    4
    5
    10
    15
    20
    30
    30
    40
    60
    80
    100
    200
    300

    		Single Pressure Ranges
    A36003S
    A36006S
    A36010S
    A36020S
    A36030S
    A36060S
    A36100S
    A36300S
    A36600S    		 n/a
    n/a
    n/a
    n/a
    n/a
    n/a
    n/a
    n/a
    n/a    		 30
    60
    100
    200
    300
    600
    1000
    3000
    6000
    Model Number
    Photohelic
    Model Number
    Capsu-
    Photohelic    		 Range
    Pascals
    A3000-60PA
    A3000-125PA
    A3000-250PA
    A3000-500PA
    A3000-750PA    		 n/a
    43000-125PA
    43000-250PA
    43000-500PA
    43000-750PA    		 0-60
    0-125
    0-250
    0-500
    0-750

    		Zero Centre Ranges
    A3300-250PA
    A3300-500PA    		 n/a
    43300-500PA    		 125-0-125
    250-0-250
    Model Number
    Photohelic
    Model Number
    Capsu-
    Photohelic    		 Range
    kiloPascals
    A3000-1KPA
    A3000-1.5KPA
    A3000-2KPA
    A3000-3KPA
    A3000-4KPA
    A3000-5KPA
    A3000-8KPA
    A3000-10KPA
    A3000-15KPA
    A3000-20KPA
    A3000-25KPA
    A3000-30KPA    		 43000-1KPA
    43000-1.5KPA
    43000-2KPA
    43000-3KPA
    43000-4KPA
    43000-5KPA
    43000-8KPA
    43000-10KPA
    43000-15KPA
    43000-20KPA
    43000-25KPA
    43000-30KPA    		 0-1
    0-1.5
    0-2
    0-3
    0-4
    0-5
    0-8
    0-10
    0-15
    0-20
    0-25
    0-30

    		Zero Centre Ranges
    A3300-1KPA
    A3300-3KPA    		 43300-1KPA
    43300-3KPA    		 .5-0-.5
    1.5-0-1.5
    Special Purpose Ranges
    Scale No. 3401 - Square Root - Specify Range
    Scale No. 3402 - Blank Scale - Specify Range
    Model Number 
    Photohelic    		 Range
    "WC    		 Range
    (pitot tube required)
    FPM
    A3000-00AV
    A3000-0AV
    A3001AV
    A3002AV
    A3010AV    		 0-0.25
    0-0.5
    0-1
    0-2
    0-10    		 300-2000
    500-2800
    500-4000
    1000-5600
    2000-12,500

    Contact Us!

    Sherman Instruments
    John Sherman Agencies Ltd.
    1641 Venables Street
    Vancouver, British Columbia, Canada
    V5L 2H1

    Phone: 604-254-9622
    Fax: 604-254-3123

    e-mail: info@johnsherman.com
    www.johnsherman.com
     
     

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