Banner QS30ARXH2OQ5 Water Sensor Receiver, High Gain

A 1450 nm infrared receiver that sees water and clear liquids

The QS30ARXH2OQ5 is the high-gain, light-operate receiver of Banner Engineering’s QS30H2O water sensor series. The series works with 1450 nm infrared light, a wavelength that water absorbs strongly, so an opposed emitter and receiver pair can detect water, and aqueous liquids and wet films, that conventional red-light sensors ignore. This receiver pairs with the high-gain QS30EXH2O emitter (a standard emitter will only work with a standard receiver).

It has a bipolar output (NPN on the white wire, PNP on the black wire), a 4 m sensing range with its emitter, and a 150 mm pigtail ending in a 5-pin M12 quick-disconnect. The housing is leakproof, rated IEC IP67 (NEMA 6) and PW12 washdown at 1200 psi.

Technical specifications

How a water sensor differs from a normal opposed sensor

Water appears dark to 1450 nm light, so the receiver sees a drop in signal when water passes between it and the emitter. Typical uses are detecting liquid in a stream, a bottle fill, coolant flow, or the presence of water in a sump or drain. Banner publishes the series with standard, high-gain and super-high-power versions: the standard receivers reach 2 m, the high-gain ones 4 m, and the super-high-power pair (13 mm beam) 8 m.

The datasheet lists several receiver choices: QS30ARH2O and QS30RRH2O for light or dark operate at 2 m, QS30ARXH2OQ5 and QS30RRXH2O at 4 m, and QS30RXH2OUQ5 with a 0-10 V analog output needing 15-30 V DC.

Wiring and ordering

A five-wire interface carries the supply, the two outputs, and the frequency-select pair so that neighbouring pairs can be separated. The emitter has an LED inhibit input on the white wire that switches the emitter off so that receiver operation can be verified. Models with a quick-disconnect need a mating five-pin M12 cordset from the accessories chapter.

Standard emitters only operate with standard receivers, and super-high-power emitters only with super-high-power receivers, so always order matching pairs and confirm range, gain and operate mode before purchasing.

Documents and quotation

The manufacturer document (Banner QS30H2O Series Water Sensor instruction manual, p/n 136166 (manufacturer, unaltered)) is attached to this page as a PDF. Send the complete type code or part number you need through the quotation form and we will reply with availability and delivery terms; please confirm the emitter pairing, gain level and connector against the plant specification before ordering. More in Sensors & Transmitters.