General
Type of electric connection	Screw connection
Number of inputs for electrodes	3
Min. adjustable operate delay time	0
Max. permitted operate delay time	0
Min. adjustable off-delay time	0
Max. permitted off-delay time	0
Number of contacts as normally closed contact	2
Number of contacts as normally open contact	2
Number of contacts as change-over contact	2
Physical measurement principle	Conductive
Width	22.5
Height	85.6
Depth	103.7
Operating voltage at AC 50 Hz	230
Operating voltage at AC 60 Hz	230
Rated switch current	4
Supply voltage AC 50 Hz	240
Supply voltage AC 60 Hz	240
Supply voltage DC	240
Voltage type (operating voltage)	AC
Voltage type of supply voltage	AC/DC
With detachable clamps
Response value sensitivity adjustable
Cascadable

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-run protection of pumps and for signaling the status of the monitored level. The sensitivity and the operating principle can be adjusted using potentiometers on the front. In addition, the delay time, selectable time functions: switch-on delay or switch-off delay, can be set from 0.1 to 10 s. Various electrodes, as well as 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.