Series 1800 Low Differential Pressure Switch for General Industrial Service
Set Points from 0.07" to 85" w.c. Repetitive Accuracy within 2%
Essential for industrial environments, the Series 1800 Low Differential Pressure Switch for general industrial service combines small size and low price with 2% repeatability for all but the most demanding applications. Set point adjustment inside the mounting stud permits mounting the 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 AT-1800 for ATEX approved.
Product Applications
- Process applications
- Mechanical equipment control
Starting at $109.20
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.
Product Literature
Manuals
Catalog Pages
Product Data Sheet
Model Chart
| EXAMPLE | 1820 | 00 | AT | Series 1820-00-AT Low Differential Pressure Switch, range 0.07-0.22" w.c., with aluminum tag. |
| SERIES | 1820 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 |
Questions
- Question
- Do you have a troubleshooting guide for the 1823-80?
- Answer
- We have the Instruction manual which comes with the unit or can be found under the Support Library tab on the Series 1800 web page. Beyond that, we would recommend contacting Dwyer’s technical support team.
- Question
- Will a Dwyer pressure switch be damaged if the pressure exceeding the maximum set-point is applied to the switch?
- Answer
- No. Not unless the maximum pressure rating of the switch is exceeded.
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| Model | Description | Availability* | Price | |
|---|---|---|---|---|
| A-302F-A | 303 SS Static pressure tip with mounting flange, for 3/16" I.D. rubber or plastic tubing. 4" insertion depth, includes mounting screws | 1-3 days* |
$12.40 |
|
| A-302F-B | 303 SS Static pressure tip with mounting flange, for 3/16" rubber or plastic tubing. 6" insertion depth, includes mounting screws | 1-3 days* |
$17.00 |
|
| A-302F-C | 303 SS Static pressure tip with mounting flange, for 3/16" rubber or plastic tubing. 8" insertion depth, includes mounting screws | 1-3 days* |
$19.35 |
|
| A-389 | Mounting bracket, 16 ga steel, zinc plated and Dichromate dipped for corrosion resistance | 1-3 days* |
$10.90 |
|
| A-489 | 4" 303 SS straight static pressure tip with flange, 1/4" hose barb. | 1-3 days* |
$9.50 |
|
| A-491 | 6" straight SS static pressure tip with mounting flange, 1/4" hose barb. | 1-3 days* |
$9.50 |
|
| A-493 | 8" straight SS static pressure tip with mounting flange, 1/4" hose barb. | 1-3 days* |
$9.90 |
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