Omron 61F-LS-CP11-NRA — Floatless Level Controller
SKU: 61F-LS-CP11-NRAUSD 27.00
Compact floatless level controller for conductive liquids, AC 100-240 V supply, 5 A SPDT relay output, three-electrode operation.
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Product Overview
The Omron 61F-LS-CP11-NRA is a compact floatless level controller in the 61F-LS series. It is manufactured by Omron Corporation. Hengyixin Automation ships this controller from our Xiamen warehouse with a 30-day DOA return window and a datasheet PDF included in the box.
Operating temperature -10 to +70 degC AC 100-240 V universal supply, 50 / 60 Hz Probe voltage 5 VAC for safe, low-corrosion operation AC 100-240 V universal supply, 50 / 60 Hz
Probe voltage 5 VAC for safe, low-corrosion operation AC 100-240 V universal supply, 50 / 60 Hz
Plan the electrode wiring with at least 30 cm between probe tips so the controller can tell the levels apart cleanly.
Key Features
- Probe voltage 5 VAC for safe, low-corrosion operation
- AC 100-240 V universal supply, 50 / 60 Hz
- 5 A SPDT contact output for direct load or contactor switching
- Operating temperature -10 to +70 degC
- SKU: 61F-LS-CP11-NRA
- Series: 61F-LS (compact floatless conductive level controller)
- Voltage: 100-240 V
Best-Fit Applications
- Empty / fill control loop on an industrial water storage tank
- High-purity rinse tank level control where mechanical floats would shed particles
- Pump auto-start at low level and auto-stop at high level in a sump
Buying Checklist
- Choose the 61F-LS-CP11-NRD for the same body with DC 24 V supply instead.
- Choose the 61F-LS-CP11-NRA for AC 100-240 V mains supply and 5 A relay output in the compact body.
- Choose the 61F-LS-CP11-NRA for AC mains; choose the NRAJ or NRAL if you specifically need S or L sensitivity grade.
Technical Specifications
| Series | 61F-LS (compact floatless conductive level controller) |
|---|---|
| Supply Voltage | AC 100-240 V, 50 / 60 Hz |
| Probe Voltage | 5 VAC applied to the electrodes |
| Sensitivity | Adjustable up to 100 kΩ electrode resistance |
| Number of Probes | 3 (upper, lower, ground) |
| Control Output | SPDT relay, 5 A at 250 VAC / 30 VDC |
| Response Time | Approx. 80 ms |
| Liquid Conductivity | ≥ 100 µS / cm |
| Connection | 11-pin round socket, panel mount |
| Operating Temperature | -10 to +70 degC |
| Protection Rating | IP20 (panel dependent) |
Manufacturer documentation
Omron's own product page, where the manufacturer's current specification and lifecycle information are published. We are an independent distributor and cannot mirror those documents; the link goes to Omron's site.
FAQ for 61F-LS-CP11-NRA
What is the difference between 61F-LS-CP11-NRA and the older 61F-G3?
Both are Omron floatless level controllers in the 61F family, but they differ in form factor and supply. The 61F-G3 is the larger plug-in 8-pin octal-base unit, used with an external octal socket on DIN rail or surface mount, and is typically sold with a specific sensitivity grade (G3 high sensitivity). The 61F-LS-CP11-NRA is the smaller compact panel-mount body on an 11-pin round socket, with AC 100-240 V supply and 5 A SPDT output. Pick the G3 if you want a sensitivity grade or DIN-rail plug-in format; pick the CP11-NRA for compact panel mount and AC universal supply.
What does the model code -NRA mean?
On this 61F-LS-CP11 family: N = general-purpose controller body; R = relay output (instead of transistor); A = AC 100-240 V supply. So the NRA variant is the AC-supply relay-output version of the CP11 family. Other suffixes in the same family include -NRD for DC 24 V supply and -NRAJ / -NRAL for different sensitivity grades.
Can this controller work with non-conductive liquids?
No. The 61F-LS-CP11-NRA works only with conductive liquids at about 100 µS / cm or higher (tap water, wastewater, condensate, dilute acids and bases). For oil, fuel, solvents, or deionized water below the threshold, switch to a mechanical float switch, a capacitive proximity sensor, or an ultrasonic level meter.
Are the electrodes included?
No. The 61F-LS-CP11-NRA ships as the controller unit only. Buy the electrode holder (PS-31 or F03-05 style for two or three probes) and the stainless-steel or weighted-cable probes (F03-14) separately. The matching 11-pin socket for panel mounting is also ordered separately. Plan to bundle these with the controller at order time to avoid a second shipment.
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