Patent No. 4,827,095
NOTE: Shown without housing and cover.
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POPULAR MODELS
Model
Number | Description |
| H3A-1SL |
Differential pressure switch, aluminum pressure chamber, Nitrile diaphragm, adjustable range 10-180" w.c. (2.48-44.78 kPa), SPDT snap switch rated 5A @ 125/250 VAC, 30 VDC, 18 AWG x 18" lead wires. |
| H3A-2SL |
Differential pressure switch, aluminum pressure chamber, Nitrile diaphragm, adjustable range 0.5-15 psid (0.03-1 bar), SPDT snap switch rated 5A @ 125/250 VAC, 30 VDC, 18 AWG x 18" lead wires. |
| H3A-3SL |
Differential pressure switch, aluminum pressure chamber, Nitrile diaphragm, adjustable range 5-70 psid (.34-4.8 bar), SPDT snap switch rated 5A @ 125/250 VAC, 30 VDC, 18 AWG x 18" lead wires. |
| H3S-1SL |
Differential pressure switch, 316SS pressure chamber, fluoroelastomer diaphragm, adjustable range 10-180" w.c. (2.48-44.78 kPa), SPDT snap switch rated 5A @ 125/250 VAC, 30 VDC, 18 AWG x 18" lead wires. |
| H3S-2SL |
Differential pressure switch, 316SS pressure chamber, fluoroelastomer diaphragm, adjustable range 0.5-15 psid (0.03-1 bar), SPDT snap switch rated 5A @ 125/250 VAC, 30 VDC, 18 AWG x 18" lead wires. |
| H3S-3SL |
Differential pressure switch, 316SS pressure chamber, fluoroelastomer diaphragm, adjustable range 5-70 psid (.34-4.8 bar), SPDT snap switch rated 5A @ 125/250 VAC, 30 VDC, 18 AWG x 18" lead wires. |
NOTE: ATEX Certified is an additional charge -- consult factory
for pricing.
ACCESSORIES
Model
Number | Description |
| A-610 |
Pipe mounting kit for 1-1/4" to 2" pipe. |
Model Chart
| Example |
H3 |
S |
2 |
S |
C |
MV |
H3S-2SC-MV Differential Pressure Control; 316SS pressure
chamber and Fluoroelastomer diaphragm, weatherproof and ATEX,
SPDT snap action switch with gold contacts; fixed deadband; automatic
reset; adjustable range 0.5-15 psid. |
| Construction |
H3 |
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Series designator, weatherproof and explosion-proof |
| Pressure Chamber & Diaphragm Material (Wetted) |
|
A
S |
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Aluminum chamber with Nitrile diaphragm
316SS chamber with Fluoroelastomer diaphragm |
| Adjustable Operating Range
|
|
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1
2
3
4
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Adjustable range 10-180" w.c. (2.48-44.78 kPa)
Adjustable range 0.5-15 psid (0.03-1 bar)
Adjustable range 5-70 psid (.34-4.8 bar)
Adjustable range 10-200 psid (.7-13.8 bar) |
| Circuit (Switch) Options |
|
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|
S
D |
|
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SPDT snap action switch rated 5A @ 125/250VAC, 30 VDC
DPDT snap action switch rated 5A @ 125/250VAC, 30 VDC |
| Electrical Connection |
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L
T
C
|
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18 AWG x 18 inch lead wires
UL, CSA approved internal terminal block
ATEX approved internal terminal block
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| Options |
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DRAIN
MV
VIT |
Housing with drain - allows condensate to be drained from inside enclosure
(meets NEMA 3 instead of 4X)
Gold contacts on snap switch for dry circuits rated 1A @ 125VAC, 1A
resistive or 0.5A inductive @ 30VDC
Fluoroelastomer diaphragm option where not standard |
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