L20 and L90 Series Electronic Level Switches, Level Limit Switches
Instrumentation and Automation
Level Limit Switches
HONEYWELL (TIANJIN) LIMITED, Tianjin, CHINA
Tianjin, China
L20 and L90 Series Electronic Level Switches
Product Description
The sensor type LIDEC detects high or low level in any liquid, with an alarm output. The LIDEC is based on the absorption of "mechanical" waves at the tip of the probe principle. The "mechanical" waves are generated and detected by a piezo-electric ceramic. , Each series consists of the following types:, a) L91 series, L91-C HT series, L92 series, L92-C HT series , b) L20-70D; Compact version with sensitive probe and/or remote box (less or more than 3 meters), c) L20 D with aluminium alloy enclosure; L20 L with explosion proof aluminium alloy enclosure and L20 F with stainless steel enclosure
Product Ratings
Power supply: 18 to 28 V dc (24V dc Nominal) | Output signal: 6 or 18 mA current loop detection or 1 NO/NC dry contact | Operating temperature: -25C to +70C | Ingress rating: IP 65/66/67/68 | Hazardous area: | Ex ia IIC or IIB T6 or T5 or T4 Ga; | Ex ia IIIC T80C or T95C or T130C Da
Applicable Standards
EN 60079-0:2012+A11:2013
EN 60079-11:2012
IEC 60079-0:2017
IEC 60079-11:2011