Low specific gravity and superior long term performance make this Series ideal for applications which require operation at specific gravities as low as 0.40. This Series also provides a heavy duty flanged chamber with removable stainless steel float for easy inspection and maintenance. Chamber is rated for operation of 1000 psig (69 bar) at 100°F (38°C), and 850 psig (59 bar) at 475°F (246°C). 1″ NPT process connections are standard. Socket weld hubs or flanged connections are optional. Various circuits are available in SPST, SPDT or DPDT configurations with hermetically sealed snap action or mercury contacts. Enclosures are general purpose, weatherproof, explosion-proof, or explosion-proof – vapor proof.
Made in USA. brand DWYER, model 1221/1223/1224
International delivery to Europe, Asia and Africa.
Our warehouses are located in the UK, UAE and Senegal.
price by request
Available
Founded in 1931, DWYER manufactures equipment for measurement, conversion and control – pressure, temperature, level, flow.
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Our company is a global supplier of control and measuring instruments from well-known world brands
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We sell high-tech equipment at very low prices. We provide really advantageous conditions for partners
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We take care of all logistics and customs clearance of I&C solutions from Europe, USA, China and India
Professional advice on device selection
Our specialists are ready to advise you on any technical question. We can find an analogue of any device
PRODUCT APPLICATIONS
| EXAMPLE | 1221 | WT | 7810 | C1 | 40 | 1221-WT-7810-C1-40 Liquid Level Control, weatherproof enclosure, SPDT snap switch, fixed deadband, automatic reset, operating pressure 1000 psig (69 bar) at 100°F (38°C), 850 psig (59 bar) at 475°F (246°C), side/bottom process connections, 1″ NPT, minimum specific gravity 0.40. | |
| CONNECTION | 1221 | One Vertical and One Horizontal 1″ NPT | |||||
| 1223 | One Vertical and One Horizontal Flanged Connection | ||||||
| 1224 | Two Vertical Flanged Connections | ||||||
| 1224T | |||||||
| ENCLOSURE | G | General Purpose, NEMA 1 | |||||
| WT | Weatherproof, NEMA 3R, 4, 4X | ||||||
| E | Explosion-proof, NEMA 7, 9, Class I Groups B, C, D, Class II Groups E, F, G. CSA approved Groups C, D, E, F, G only. | ||||||
| EV | Explosion-proof/Vapor-proof, NEMA 7, 9, Class I Groups B, C, D, Class II Groups E, F, G. CSA approved Groups C, D, E, F, G only. | ||||||
| CIRCUITS (for electrical circuits see charts A & B below) |
48XX | Single Stage Mercury Switch, see chart A | |||||
| 48XX-XX | Two Stage, Mercury Switch, see chart A | ||||||
| 78XX | Single Stage, Snap Switch, see chart B | ||||||
| 78XX-XX | Two Stage, Snap Switch, see chart B | ||||||
| 78XXHM | Hermetically Sealed Snap Switch, see chart B | ||||||
| 98XX | Single Stage, High Capacity DC Snap Switch, use heat fins (HF) if process temperature exceeds 350°F (177°C), do not exceed 450°F (232°C), see chart B | ||||||
| 98XX-XX | Two Stage, High Capacity DC Snap Switch, use heat fins (HF) if process temperature exceeds 350°F (177°C), do not exceed 450°F (232°C), see chart B | ||||||
| CHAMBER MATERIAL | C1 | Carbon Steel Body | |||||
| C216 | 316SS Body | ||||||
| HFC1 | Heat Fins & Carbon Steel Body | ||||||
| MINIMUM SPECIFIC GRAVITY |
40 | 0.40 Specific Gravity (1221 only) | |||||
| 140 | 0.40 Specific Gravity & 150# Flange (1223, 1224 only) | ||||||
| 340 | 0.40 Specific Gravity & 300# Flange (1223, 1224 only) | ||||||
| 640 | 0.40 Specific Gravity & 600# Flange (1223, 1224 only) | ||||||
| OPTIONS | H2 | H2 Socket Weld Hub (1221, steel housing only) | |||||
| STW | SS Tag Wired | ||||||
| 01 | Breather Only (E-Housing only) | ||||||
| 02 | Drain Only (E-Housing only) | ||||||
| 12 | Breather & Drain (E-Housing only) | ||||||
| 23720 | Fungus Proofing |
CHARTS A & B – ELECTRICAL CIRCUITS AND RATINGS
| SWITCH TYPE | SWITCH ACTION | ELECTRICAL RATINGS IN AMPS | ORDERING CODE | |||||||
| AC | DC | SINGLE STAGE | TWO STAGE | |||||||
| 120V | 240V | 440V | 30V | 125V | 250V | LOWER | UPPER | |||
| CHART A Mercury Contacts |
SP-ST open on level FALL | 10 | 5 | 3† | 10 | 5 | -4820 | -4820 | -21 | |
| SP-ST open on level RISE | 10 | 5 | 3† | 10 | 5 | -4821 | -4821 | -20 | ||
| SP-DT one switch | 4 | 2 | 1† | 4 | 2 | -4810 | -4810 | -10 | ||
| SP-DT two switches E.I.* | 10 | 5 | 3† | 10 | 5 | -4815 | -4815 | -15 | ||
| DP-ST two switches E.I.* open on level FALL | 10 | 5 | 3† | 10 | 5 | -4814 | -4814 | -13 | ||
| DP-ST two switches E.I.* open on level RISE | 10 | 5 | 3† | 10 | 5 | -4813 | -4813 | -14 | ||
| DP-DT two SP-DT switches | 4 | 2 | 1† | 4 | 2 | -4806 | -4806 | -06 | ||
| CHART B snap action contacts |
SP-DT one switch | 12 | 5 | 3† | 0.5** | 0.25** | -7810 | -7810 | -10 | |
| DP-DT two SP-DT switches | 12 | 5 | 3† | 0.5** | 0.25** | -7806 | -7806 | -06 | ||
| SP-DT one hermetically sealed switch | 5 | 5 | 5** | -7810HM | -7810HM | -10HM | ||||
| DP-DT two hermetically sealed SP-DT switches | 5 | 5 | 5** | -7806HM | -7806HM | -06HM | ||||
| DP-DT two SP-DT switches | 10 | 3 | 10‡ | 3‡ | -9806 | -9806 | -06 | |||
| SP-DT one switch | 10 | 3 | 10‡ | 3‡ | -9810 | -9810 | -10 | |||
You can request the necessary certificates, documentation, instructions and user manuals for DWYER 1221/1223/1224 using the special form.
You can buy DWYER 1221/1223/1224 in UK or Europe at a favourable price in «DOLCHETRADE» by leaving a request on the website, by phone +441225535040 or by email dolce@dolcetrade.com. DWYER 1221/1223/1224 price are subject to change depending on exchange rates. We deliver instruments by transport companies in the United Kingdom and Europe.
See also: Level Switches
