ABB Stotz S&J Level Monitoring Relay CM-ENS.31S

Manufacturer: ABB Stotz S&J
Designation: Level Monitoring Relay
Type: CM-ENS.31S
Electrical connection type: Screw connection
Rated control supply voltage Us at AC 50 Hz: 24..240 V
Rated control supply voltage Us at AC 60 Hz: 24..240 V
Rated control supply voltage Us at DC: 24..240 V
Voltage type for operation: AC/DC
With removable terminals: no
Number of electrode inputs: 3
Min. adjustable pick-up delay time: 0 s
Max. permissible pick-up delay time: 30 s
Min. adjustable drop-out delay time: 0 s
Max. permissible drop-out delay time: 30 s
Adjustable response sensitivity: yes
Number of contacts as changeover: 2
Physical measurement principle: conductive
Cascadable: yes
Width: 22.5 mm
Height: 85.6 mm
Depth: 103.7 mm

The CM-ENS.31S is a relay from the CM family for level monitoring and level control. The rated control supply voltage is 24 - 240 V AC/DC. Output: 2 changeover contacts (250 V / 4A). It monitors and controls levels and mixing ratios of conductive liquids. It is used for filling and emptying applications, for dry running protection of pumps, and for signaling the status of the monitored level. The sensitivity and operating principle can be adjusted using potentiometers located on the front. Additionally, the delay time, selectable time functions: on-delay or off-delay, can be set from 0.1 to 10 s. Various electrodes and a sealable transparent cover to protect against unauthorized adjustment of the settings are available as accessories. The device is available with double-chamber box screw terminals or push-in terminals.