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DAVIS Á¾ÇÕ °èÃø±â - Çѱ¹´ë¸®Á¡ ÄÚ¸°½º°è±â(ÁÖ)
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The photohelic switch/gauges function in the same manner, as versatile, etc.. |
The photohelic
switch/gauges function in the same manner, as versatile, precise
pressure switches combined with a pressure gauge utilizing the time
proven magnehelic design. Available with 1 or 2 LED/phototransistor
actuated relays. Gauge reading is unaffected by switch operation. Easy
to adjust set points with knob controls. Apply pressure and switch set
points are fully visible. Deadband is 1 pointer width—less than 1%
full scale. DPDT relays can easily be interlocked to provide variable
deadband control. For positive, negative or differential pressures as
low as 0.25" water column to 0 to 300 psi full scale; set points as
low as .01 w.c. on .25" scale unit. |
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SPECIFICATIONS
Ambient Pressure
Range
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20¡ÆF to 120¡ÆF.
Low temperature models available as an option |
Related Pressure
Photohelic |
20" Hg to 25
psig total pressure on either side of diaphragm. MP Model to 35 psig and
HP Model to 80 psig also available. Capsuhelic, 20 Hg to 500 psig |
Accuracy |
Photohelic, ¡¾2% of
full scale at 70¡Æ (3% on "O" models, 4% on "OO"
models. Capsuhelic, ¡¾3% of full scale at 70¡Æ (2% on 4300 S models, 4%
on 43215, 43220, 43500) |
Gauge Connection |
Photohelic,
1/8" NPT. Capsuhelic, 1/4" NPT |
Electrical Ratings |
10 amps at 70 VAC,
60 Hz resistive |
(Of relays) |
6 amps at 240 VAC |
Power Required |
120 VAC, 50/60 Hz |
Conduit Opening |
3/4" conduit |
CAT
NO. |
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MODEL |
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DEscRIPTION |
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AVAIL |
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PRICE |
DW33931 |
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3000-00 |
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DWYER
PRESSURE SWITCH/GAUGE, 0 to .25" H2O .005 Divisions |
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Yes |
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524,880
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DW339321 |
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3001 |
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DWYER
PRESSURE SWITCH / GAUGE, 0 to 1.0" H2O .02 Divisions |
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Yes |
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509,760
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DW33934 |
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A3003 |
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DWYER
PRESSURE SWITCH/GAUGE, 0 to 3.0" H2O .10 Divisions |
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Yes |
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509,760
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DW33936 |
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A3005 |
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DWYER
PRESSURE SWITCH/GAUGE, 0 to 5.0" H2O .10 Divisions |
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Yes |
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509,760
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DW33939 |
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A3010 |
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DWYER
PRESSURE SWITCH/GAUGE, 0 to 10" H2O .20 Divisions |
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Yes |
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509,760
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DW33940 |
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A3015 |
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DWYER
PRESSURE SWITCH/GAUGE, 0 to 15" H2O .50 Divisions |
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Yes |
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509,760
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DW33948 |
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A3100 |
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DWYER
PRESSURE SWITCH/GAUGE, 0 to 100" H2O 2.0 Divisions |
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Yes |
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486,000
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DAVIS Á¾ÇÕ °èÃø±â - Çѱ¹´ë¸®Á¡ ÄÚ¸°½º°è±â(ÁÖ)
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