Sensing Bands boast high degree of chemical resistance. The K7L can be used in a wide range of applications, from semiconductor production installations to food-processing equipment.
last update: April 1, 2016
Sensing Bands boast high degree of chemical resistance. The K7L can be used in a wide range of applications, from semiconductor production installations to food-processing equipment.
Stable detection of liquids with impedances of up to 50 MΩ and common water. Four sensing ranges are available, ensuring detection suited to the application.
The K7L internally oscillates AC signals provided to the Sensing Band, protecting the Sensing Band from electric corrosion and ensuring safe operation.
The K7L incorporates a noise canceller circuit that uses a 3-conductor cable, ensuring a high level of noise immunity.
Isolation between the power supply circuits and sensing circuits allows multiple channels to be installed in the same location.
Detection is also possible for condensation inside cleaning devices and liquid leaked to the surroundings.
SUS316 and polyethylene are used for the Sensing Band's core and sheath to ensure high resistance to both acidic and alkaline liquids.
Liquid leakage at a pipe joint can be detected by wrapping the Sensing Band around the joint.
Liquid leaked to drain pans can be detected to prevent damage to devices and cleaning irregularities for wafers.
The level of pure water is detected inside plating baths. High sensitivity allows high-accuracy control to prevent cleaning irregularities.
Note: Be sure to ground the baths if two or more K7L Sensors are used in the same tank in an explosion-prevention area.
last update: April 1, 2016
last update: April 3, 2017
Ambient temperature | Operating: -10 to +55°C |
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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 |
Rated power supply
voltage |
12 to 24 VDC (Allowable voltage fluctuation range: 10 to 30 VDC) | |||
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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. |
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Disconnection
detection function * |
Detection signal: 10 VDC max., 200 ms
Detection time: 10 s max. Recovery: Operation is recovered by resetting the power supply. |
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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. |
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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.) |
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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
last update: April 3, 2017
(Unit: mm)
K7L-AT50/AT50D/AT50DP
K7L-AT50B/AT50DB/AT50DPB
F03-20
F03-20T
P2RF-08 (Round terminals can be used.)
Note: Secure the Sockets with M3 screws at a torque of 0.78 to 1.18 N⋅m.
* The applicable models of the K7L depend on the model of the Socket. If the correct Socket is not used, the K7L nameplate will be upside down.
P2RF-08-E
Note: Secure the Sockets with M3 screws at a torque of 0.78 to 1.18 N⋅m.
* The applicable models of the K7L depend on the model of the Socket. If the correct Socket is not used, the K7L nameplate will be upside down.
P2RF-08-PU
Note: The applicable models of the K7L depend on the model of the Socket. If the correct Socket is not used, the K7L nameplate will be upside down.
F03-16PS
F03-16PS-F
F03-26PS
* Use a commercially available bonding agent for PVC.Do not use adhesive tape for securing.
last update: April 3, 2017
TITLE | DOCUMENT TYPE | SIZE |
K7L Series | Catalog | 7033 KB |
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