Series 1800 Low Differential Pressure Switch for General Industrial Service

Low Differential Pressure Switch for General Industrial Service
Set Points from 0.07" to 85" w.c. Repetitive Accuracy within 2%

Set Points from 0.07" to 85" w.c. Repetitive Accuracy within 2%

Essential for industrial environments, the SERIES 1800 combines small size and low price with 2% repeatability for enough accuracy for all but the most demanding applications. Set point adjustment inside the mounting stud permits mounting switch on one side of a wall or panel with adjustment easily accessible on the opposite side. UL and CSA listed, and FM approved.

CAUTION: FOR USE ONLY WITH AIR OR COMPATIBLE GASES.

Please see Series AT21823 for ATEX approved.

Product Applications

  • Process applications
  • Mechanical equipment control
More Information
Model Chart
EXAMPLE182000ATSeries 1820-00-AT Low Differential Pressure Switch, range 0.07-0.22" w.c., with aluminum tag.
SERIES1820
1823
1824
  Low Differential Pressure Switch
Low Differential Pressure Switch with Conduit
Low Differential Pressure Switch without Conduit
RANGE 00
0
1
2
5
10
20
40
80
 0.07-0.22" w.c.
0.15-0.5" w.c.
0.3-1.0" w.c.
0.5-2.0" w.c.
1.5-5.0" w.c.
2.0-10.0" w.c.
3.0-22.0" w.c.
5.0-44.0" w.c.
9.0-85.0" w.c.
OPTIONS  AT
B
BGAP
EXPL
GOLD
LC
MIL
MR
PRESET
SF
ST
WP
Aluminum Tag
Buna-N Elastomers
B-Gap Micro Switch
Cast Iron Explosion-proof Housing
Gold Contact Switch
Less Conduit
MIL Switch
Manual Reset
Preset
Silicone Free (includes Buna-N Elastomers)
Stainless Steel Tag
Weatherproof Housing
Options
  • Weatherproof Housing - 16-ga. steel enclosure with gasketed cover (NEMA 4, IP66) for wet or oily conditions. Withstands 200 hour salt spray test. Wt. 5-1/2 lbs. (2.5 kg). Switch must be factory installed. Change 1823 base number to 1824 and add -WP suffix. Example: 1824-1-WP.
  • Explosion-proof Housing - Cast iron base with aluminum cover. Rated Class I, Group D; Class II, Div. 1 & 2, Groups E,F,G; Class III and NEMA 7 C,D, NEMA 9 E,F,G. Wt. 7-1/2 lbs. (3.4 kg). Switch must be factory installed. Change base number to 1824 and add -EXPL suffix. Example: 1824-1-EXPL.
  • MIL Environmental Construction - Unlisted Model 1820 can be furnished with a special sealed snap switch for protection against high humidity, fungus and/or military applications. Similar to Model 1823 except dead band is slightly greater and some lower set points may not be possible. To order, add suffix -MIL. Example: 1820-2-MIL.
Service: Air and non-combustible, compatible gases.
Wetted Materials: Consult Factory.
Temperature Limits: -30 to 180°F (-34 to 82.2°C). 1823-00, -20 to 180°F (-28.9 to 82.2°C).
Pressure Limits: 10 psig (68.95 kPa) continuous, 25 psig (172.4 kPa) surge.
Switch Type: Single-pole double-throw (SPDT).
Repeatability: ±2%.
Electrical Rating: 15 A @ 120-480 VAC, 60 Hz. Resistive 1/8 HP @ 125 VAC, 1/4 HP @ 250 VAC, 60 Hz. De-rate to 10 A for operation at high cycle rates.
Electrical Connections: 3 screw type, common, normally open and normally closed.
Process Connections: 1/8" female NPT.
Mounting Orientation: Diaphragm in vertical position. Consult factory for other position orientations.
Set Point Adjustment: Screw type inside mounting spud.
Weight: 1 lb, 5 oz (595 g).
Agency Approvals: CE, CSA, FM, UL. NOTE: Optional (-EXPL) Explosion-proof Enclosure does not possess any agency approvals.
  • Compact size and repeatability, provides a high-value switch for many industrial applications
  • Designed for panel and wall mounting and provides easy access that simplifies making adjustments or changes to switch setting
  • Wide range of models from 0.07 in w.c. to 85 in w.c. can meet exacting specifications for a low pressure switch