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K7L-AT50[] / AT50D[][]
Liquid Leakage Sensor Amplifier/Liquid Leakage Sensor Amplifier with Disconnection Detection Function
![K7L-AT50[] / AT50D[][]](/Images/l_564-26-118960-198x198.jpg)
Reliable Detection of a Wide Variety of Liquids Ranging from Water to Liquid Chemicals with Low Conductivity. Four Sensing Ranges Available. K7L-AT50B and K7L-AT50DB are our Value Design products which increase the value of your control panels.
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last update: April 3, 2017
Characteristics
| Ambient temperature | Operating: -10 to +55°C |
|---|---|
| Ambient humidity | Operating: 45% to 85% |
| Insulation resistance | 10 MΩ at 100 VDC between case and current-carrying parts |
| Dielectric strength | 1,000 VAC at 50/60 Hz for 1 min between case and current-carrying parts |
| Power consumption | 1 W max. |
| Response time | Operate:800 ms max.
Release:800 ms max. When turning ON power: 2 s max. |
| Weight | Approx. 14 g |
Specifications
| Rated power supply
voltage |
12 to 24 VDC (Allowable voltage fluctuation range: 10 to 30 VDC) | |||
|---|---|---|---|---|
| Operate resistance | Ω to 50 MΩ, variable
Range 0: 0 to 250 kΩ. Range 1: 0 to 600 kΩ Range 2: 0 to 5 kΩ. Range 3: 0 to 50 kΩ Note: The range is set using the DIP switch on the side of the Sensor Amplifier. (Refer to DIP Switch Settings.) Set the corresponding pin of the DIP switch in the up position. (For range 0, set all 3 pins in the down position.) The adjuster (ADJUST) on the top of the Sensor Amplifier sets the resistance value for detection within the set range. It is factory-set to the upper limit. (Normally, the K7L can be used with the adjuster at this setting.) With any range, resistance values can be set from 0 Ω. |
|||
| Disconnection
detection function * |
Detection signal: 10 VDC max., 200 ms
Detection time: 10 s max. Recovery: Operation is recovered by resetting the power supply. |
|||
| Release resistance | 105% min. of operate resistance | |||
| Output
configuration |
Open-collector transistor output with 100 mA at 30 VDC max. for both liquid leakage detection
and disconnection detection. Max. 30 VDC, 100mA Note: If the rightmost pin of the DIP switch on the side of the Sensor Amplifier is set to the down position, the output turns ON when liquid is detected; if it is set to the up position, the output turns OFF when liquid is detected. |
|||
| Wiring distance | Connecting cable: 50 m max.
Sensing Band length: 10 m max. Note: These values are possible on condition that a completely insulated 3-conductor VCT cable with a thickness of 0.75 mm2 and a dielectric strength of 600 V is used together with a Liquid Sensing Band specified by OMRON. (A 0.2-mm2 cable can also be used.) |
|||
| Accessories | Terminal Block | Screwdriver for ADJUST | Terminator | |
| K7L-AT50/AT50B | 1 | 1 | --- | |
| K7L-AT50D/AT50DB/
AT50DP/AT50DPB |
1 | 1 | 1 | |
| K7L-AT50D-S | 1 | 1 | --- | |
* For the K7L-AT50D[][].
last update: April 3, 2017
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