Specifications HI7871 HI7873 Transmission max 100 m (330’) Electrical Connection HI7164 undecal connector (not included) Level Adjustment high and low high, low and overflow Level Indication high and low high, low and overflow Sensor Bars three (not included)* four (not included)** Transmitter HI7874 (not included) HI7874 (not included) Output Contact one relay (2A/250 VAC, 30 VDC) two relays (2A/250V, 30 VDC) Power Supply models “/115”: 110/115 VAC; 50/60Hz models “/220”: 220/240 VAC; 50/60Hz Environment 0 to 50°C (32 to 122°F); RH max 85% non condensing Dimensions 83 x 53 x 99 mm (3.3 x 2.1 x 3.9’’) Weight 250 g (8.8 oz) Ordering Information HI7871/115 (115V) is supplied with mounting brackets and instructions. HI7871/220 (220V) is supplied with mounting brackets and instructions. HI7873/115 (115V) is supplied with mounting brackets and instructions. HI7873/220 (220V) is supplied with mounting brackets and instructions. HI731324 measuring bar set for level controller HI7874 level Transmitter HI7164 undecal Connector HI7871 • HI7873 Mini Level Controllers The HI7871 and HI7873 mini level controllers are ideal for liquid level control over distances of up to 100 m (330’). These instruments are highly compact and will fit in tight spaces. These easy-to-use controllers are suited for nearly any liquid level application, such as industrial and municipal water treatment, nutrient tank control in farming, hydroponics, aquaculture and plating rinse baths. The HI7871 features high and low level control, while the HI7873 includes an overflow alarm. Both instruments are connected to a two-wire transmitter (HI7874), which is ideal for level monitoring in remote applications. A complete liquid level measuring system requires: 1) A controller (HI7871 or HI7873) 2) A bar holder with amplifier circuitry (HI7874) 3) A package of measuring bars (HI731324) 4) An undecal connector (HI7164) *HI7871 requires 3 bars, one each for low and high levels and the third as a consent sensor. **HI7873 requires 4 bars with the additional bar used for overflow measurement. HI7874 Level Transmitter with HI731324 Stainless Steel Measuring Bars HI7164 Undecal Connector 15 Process Instrumentation 15.98 | www.hannainst.com controllers
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