Model FQ - Cable Suspended Float Sensor

General Description

The FQ-6 and FQ-8 cable suspended float sensors are designed to provide the control signals for a differential pump control system. These top mounting sensors are suitable for use in a wide variety of open tanks or vessels. The control differential in the FQ-6 is adjustable from 270mm to 1 OOOmm and FQ-8 is adjustable from 330mm to 4000mm. The ABS covered float and the PVC cable make them ideal for most pump control applications. A number of float units can be used together to give multiple level switch points in one flanged holder. Each float can be easily assembled on site and the switch operating points are adjusted by altering the length of the cable.

Chemical Resistance

The ABS covered float and PVC cable are compatible with a wide range of liquids. However, there are some liquids that may damage these materials. ABS can

• Aromatics (benzene, toluene, xylene) cause the float to dissolve.
• Esters and ketones cause the float to swell. PVC cable can be used with the following cautions: Oils, especially vegetable oils and fats, tend to absorb the plasticizer of PVC cable. Consequently the cable stiffens.

If necessary, alternative Hypalon cable is available with FQ-8. In general, the resistibility depends on concentration, duration of immersion, presence of suspended solids and/or corrosive gasses and temperature. Although these cable suspended floats are designed for long life, we recommend that they are replaced at adequate intervals.

Technical Note

To avoid personal injury and protect the switch for electrical surges, connect the float to our relay unit Model RE7000 or similar devices.

Switch Action

• Up ON: FQ-6, FQ-8, FQ-BT
• Down ON: FQ-68, FQ-88

Contact Rating

• Max Capacity: AC 50VA / DC 50W
• Max Current: AC 0.5A / DC 0.5A
• Max Voltage: AC 300V / DC 300V

Model FQ - Actuation

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