84870213

84870213 Datasheet

84870213-ENRM

Part	Datasheet
84870213	84870213 (pdf)

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84870213-ENRM Regulation of 1 or 2 levels - minimum - maximum Monitoring filling UP or emptying DOWN selected by a switch on the front panel. Probes supplied with AC current. Sensitivity adjustable on front panel from 250 Ω to 1 M Time delay preventing wave effect adjustable from to 5s. Operating range Maximum power consumption Adjustable sensitivity Measurement accuracy at maximum sensitivity Electrode voltage max Electrode current maximum cable capacity Response time high level Response time low level Output relay according to AC1 resistive load Galvanic isolation via transformer 4 kV, 8 mm creepage distance Isolation of contacts and electrodes from power supply Operating temperature range °C Storage temperature range °C Weight g 3 VA 250 MΩ ± 30% 24 V AC 50/60 Hz 1 mA 50/60 Hz 10 nF 300 ms 500 ms 1 AgNi changeover relay 8 A AC max. Class II VDE 0551 kV AC -20 -40 150 ##SHEMAS## : The ENRM monitors the levels of conductive liquids. The principle is based on measuring the apparent resistance of the liquid between two submerged probes. When this value is lower than the preset threshold displayed on the unit's front panel, the relay changes state. To prevent any occurrences of electrolysis, an AC current is passed through the probes. A rotary switch on the front panel can be used to select the desired function and sensitivity range. A level can be monitored using the 2nd rotary switch. In this instance, the max. probe remains above the liquid and an adjustable time delay prevents the wave effect. A green LED indicates that the supply voltage is present. A yellow LED indicates the output relay's state. When the green and yellow LEDs are flashing, this indicates an incompatible adjustment position. Rotary switch in mode 2 - Activation time - Filling function level 1 - on delay, function Up LS Low Sensitivity 250 Ω to 5 kΩ , Up St Standard Sensitivity 5 kΩ to 100 kΩ , Up HS High Sensitivity 50 kΩ to 1 MΩ . When the level of liquid drops below the probe for a period exceeding the value of time delay T set on the front panel, the relay energises and remains on until the level of liquid reaches the probe again. If the level of liquid returns above the level set before the time delay elapses, the relay does not come on. When the power returns after a power break, the output relay only energises after time delay T if the level of liquid is below the threshold. Legend Level Relay Rotary switch in mode 2 - Activation time - Emptying function 30/03/2010 level 1 - on delay, function Dwn LS Low Sensitivity 250 Ω to 5 kΩ , Dwn St Standard Sensitivity 5 kΩ to 100 kΩ , Dwn HS High Sensitivity 50 kΩ to 1 MΩ . When the level of liquid rises above the probe for a period exceeding the value of time delay T set on the front panel, the relay energises and remains on until the level of liquid drops back below the probe. If the level of liquid drops back below the level set before the time delay elapses the relay does not come on. When the power returns after a power break, the output relay only energises after delay time T if the level of liquid is above the threshold. Legend Level Relay Rotary switch in mode 3 - Deactivation time - Filling function level 1 - off delay, function Up LS Low Sensitivity 250 Ω to 5 kΩ or Up St Standard Sensitivity 5 kΩ to 100 kΩ or Up HS High Sensitivity 50 kΩ to 1 MΩ . When the liquid level drops below the probe the relay energises immediately and remains on until the level of liquid reaches the probe again and remains above it for a period exceeding time delay T set on the front panel. If the level of liquid drops back below the level set before the time delay elapses, the relay remains on. When the power returns after a power break, the output relay energises immediately if the liquid level is below the threshold. Legend Level Relay Rotary switch in mode 3 - Deactivation time - Emptying function level 1 - off delay, function Dwn LS Low Sensitivity 250 Ω to 5 kΩ or Dwn St Standard Sensitivity 5 kΩ to 100 kΩ or Dwn HS High Sensitivity 50 kΩ to 1 MΩ . When the level of liquid rises above the probe the relay energises immediately and remains on until the level of liquid drops back below the probe for a period exceeding the value of time delay T set on the front panel. If the level of liquid returns above the level set before the time delay elapses the relay remains on. When the power returns after a power break, the output relay energises immediately if the level of liquid is above the threshold. Legend Level Relay Monitoring two levels, emptying function 30/03/2010

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84870213-ENRM

Regulation of 1 or 2 levels - minimum - maximum

Monitoring filling UP or emptying DOWN selected by a switch on the front panel. Probes supplied with AC current. Sensitivity adjustable on front panel from 250 Ω to 1 M Time delay preventing wave effect adjustable from to 5s.

Operating range

Maximum power consumption Adjustable sensitivity Measurement accuracy at maximum sensitivity Electrode voltage max Electrode current maximum cable capacity Response time high level Response time low level Output relay according to AC1 resistive load Galvanic isolation via transformer 4 kV, 8 mm creepage distance Isolation of contacts and electrodes from power supply Operating temperature range °C Storage temperature range °C Weight g
3 VA 250 MΩ ± 30% 24 V AC 50/60 Hz 1 mA 50/60 Hz 10 nF 300 ms 500 ms 1 AgNi changeover relay 8 A AC max.

Class II VDE 0551
kV AC -20 -40 150
##SHEMAS## :

The ENRM monitors the levels of conductive liquids. The principle is based on measuring the apparent resistance of the liquid between two submerged probes. When this value is lower than the preset threshold displayed on the unit's front panel, the relay changes state. To prevent any occurrences of electrolysis, an AC current is passed through the probes. A rotary switch on the front panel can be used to select the desired function and sensitivity range. A level can be monitored using the 2nd rotary switch. In this instance, the max. probe remains above the liquid and an adjustable time delay prevents the wave effect.

A green LED indicates that the supply voltage is present. A yellow LED indicates the output relay's state. When the green and yellow LEDs are flashing, this indicates an incompatible adjustment position.

Rotary switch in mode 2 - Activation time - Filling function
level 1 - on delay, function Up LS Low Sensitivity 250 Ω to 5 kΩ , Up St Standard Sensitivity 5 kΩ to 100 kΩ , Up HS High Sensitivity 50 kΩ to 1 MΩ .

When the level of liquid drops below the probe for a period exceeding the value of time delay T set on the front panel, the relay energises and remains on until the level of liquid reaches the probe again. If the level of liquid returns above the level set before the time delay elapses, the relay does not come on.

When the power returns after a power break, the output relay only energises after time delay T if the level of liquid is below the threshold.

Legend

Level

Relay

Rotary switch in mode 2 - Activation time - Emptying function
30/03/2010
level 1 - on delay, function Dwn LS Low Sensitivity 250 Ω to 5 kΩ , Dwn St Standard Sensitivity 5 kΩ to 100 kΩ , Dwn HS High Sensitivity 50 kΩ to 1 MΩ .

When the level of liquid rises above the probe for a period exceeding the value of time delay T set on the front panel, the relay energises and remains on until the level of liquid drops back below the probe. If the level of liquid drops back below the level set before the time delay elapses the relay does not come on.

When the power returns after a power break, the output relay only energises after delay time T if the level of liquid is above the threshold.

Legend

Level

Relay

Rotary switch in mode 3 - Deactivation time - Filling function
level 1 - off delay, function Up LS Low Sensitivity 250 Ω to 5 kΩ or Up St Standard Sensitivity 5 kΩ to 100 kΩ or Up HS High Sensitivity 50 kΩ to 1 MΩ .

When the liquid level drops below the probe the relay energises immediately and remains on until the level of liquid reaches the probe again and remains above it for a period exceeding time delay T set on the front panel. If the level of liquid drops back below the level set before the time delay elapses, the relay remains on. When the power returns after a power break, the output relay energises immediately if the liquid level is below the threshold.

Legend

Level

Relay

Rotary switch in mode 3 - Deactivation time - Emptying function
level 1 - off delay, function Dwn LS Low Sensitivity 250 Ω to 5 kΩ or Dwn St Standard Sensitivity 5 kΩ to 100 kΩ or Dwn HS High Sensitivity 50 kΩ to 1 MΩ .

When the level of liquid rises above the probe the relay energises immediately and remains on until the level of liquid drops back below the probe for a period exceeding the value of time delay T set on the front panel. If the level of liquid returns above the level set before the time delay elapses the relay remains on.

When the power returns after a power break, the output relay energises immediately if the level of liquid is above the threshold.

Legend

Level

Relay

Monitoring two levels, emptying function
30/03/2010

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Datasheet ID: 84870213 507086