Gems ELS-1100 Series Single-Point Level Switch is a compact, economical, no moving parts polysulfone level sensor with built-in switching electronics. A variety of mountings, power requirements, and electrical terminations are available. These level switch units are suitable for high, low, or intermediate level detection. Installation is simple and quick through the tank top, bottom or side. The sensor offers ±1 mm repeatability and broad liquid compatibility. They are not recommended for use in any liquid that crystallizes or leaves a solid residue.
Gems Sensors ELS-1100 Series Single-Point Level Switch
| Gems ELS-1100 Series (General Purpose) Electro-Optic Level Sensor Technical Specifications | |
|---|---|
| ● GENERAL | |
| Description | General purpose ELS-1100 Series polysulfone units are both compact and economical. They feature a variety of mountings, power requirements and electrical terminations to make it easy to find a perfect match for the application. U.L. Listed — File No. E108913. |
| ● SPECIFICATIONS | |
| Materials — Housing and Prism | Polysulfone or Nylon. |
| Operating Pressure | 0 to 150 PSI, maximum. |
| Operating Temperature* | 0°F to 176°F (-17.8°C to +80°C). |
| Current Consumption | 18 mA, approximately. |
| Output† | TTL/CMOS compatible. Open collector output may sink 40 mA up to 30 VDC. |
| Repeatability | ±1 mm. |
| EMI Susceptibility | Meets MIL-STD-461B Part 2 Modified. Specification of 10 V/M for frequency range 30 to 1000 MHz (except 609 MHz = 9 V/M and 679 MHz = 7.5 V/M). |
| *These switches are not for use in freezing liquid or steam/high condensation environments — contact Gems for alternative solutions. | |
| ● DIMENSIONS — MOUNTING TYPES | ||||
| 1/4″ NPT Mounting | 1/4″ NPT Mounting with 3/8″ Conduit | 1/2″ Straight Thread Mounting with O-Ring | M12x1-8g Straight Thread with O-Ring | “Fish” Pull Ring |
| Epoxy encapsulated; 5/8″ hex (15.9 mm); overall length 2-5/32″ (54.7 mm); 1/4″ NPT process thread. | 3/8″ NPT mounting (conduit); 5/8″ hex (15.9 mm); overall length 2-5/32″ (54.7 mm); 1/4″ NPT process thread. | 5/8″ hex (15.9 mm); overall length 2-5/32″ (54.7 mm); Viton® O-ring; .47″ ref.; 1/2″-20 UNF 2A thread. | 5/8″ hex (15.9 mm); overall length 2-5/32″ (54.7 mm); Viton® O-ring; .47″ ref.; M12 x 1-8g thread. | Cable entry; 5/8″ hex (15.9 mm); overall length 2-5/8″ ref. (66.7 mm); removable PVC fish pull ring. |
| Lead Wires, 22 AWG, PVC Jacketed, 12″ to 14″ Extended | 25′ Cable, 22 AWG, PVC Jacketed | |||
| ● ORDERING INFORMATION | |||||||
| Specify part number based on mounting type, input power and output condition required. | |||||||
| Input Power | Probe Condition at Current Sink | 1/4″ NPT (Polysulfone) | 1/4″ NPT & 3/8″ Conduit (Polysulfone) | 1/4″ NPT & 3/8″ Conduit (Nylon) | 1/2″ Straight Thread (Polysulfone) | M12x1-8g Straight Thread (Polysulfone) | “Fish” Pull Ring (Polysulfone) |
| 5 VDC | Wet | 138167 | 144225 | 175631 | 144235 | 166541 | — |
| 10-28 VDC | Wet | 142700 ⚡ | 143585 ⚡ | 157750 | 143580 | 169555 ⚡ | 143577 |
| Dry | 143570 ⚡ | 143590 ⚡ | 175632 | 143575 | 169556 | 148973 ⚡ | |
| ⚡ = Stock item. “—” indicates combination not available. | |||||||
| ● INTRINSICALLY-SAFE VERSIONS | |
| GEMS ELS-1100 switches may be rendered intrinsically-safe for Class I, Division 1, Group C & D when used with appropriate GEMS Zener Barriers. Call Gems Sensors for special ELS-1100-IS (intrinsically-safe) part numbers and Installation Bulletins 148745 and 148744, File No. E44570. |
| ● RELATED ACCESSORY | |
| Extended Power / Switching (Optopak) | Extended power and switching capabilities of 12 VDC models with Gems. Converts TTL output signal to a 5 Amp relay output. Available as an open circuit board or mounted in a NEMA 4X enclosure. See Page A-33. |
Download Gems Sensors ELS-1100 Series Single-Point Level Switch information here
Datasheet: Gems ELS-1100-series Datasheet
Manual: Gems ELS-1100 Manual
Certificate: Gems ELS-1100 CE Cert
