{"title":"Water Level and Process Controllers","description":null,"products":[{"product_id":"hanna-instruments-7871-220-mini-level-controller-control-relay-high-and-low-220v","title":"Hanna Instruments-7871\/220 Mini Level Controller, control relay: high and low, 220V","description":"Hanna Instruments-7871 mini-level controller is ideal for liquid level control over distances of up to 100 meters (330 feet). It is highly compact and will fit in tight spaces.\u003cbr\u003e\u003ch3\u003eMini Level Controller, control relay: high and low, 220, 240V\u003c\/h3\u003e\u003cbr\u003e\u003cp\u003eThese easy-to-use controllers are ideal for nearly any liquid level application, such as industrial and municipal water treatment, nutrient tank control in farming, hydroponics, aquaculture applications and plating rinse baths.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eHanna Instruments-7871 includes an overflow alarm and can be connected to a 2-wire transmitter, which is ideal for level monitoring in remote applications.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eA complete liquid level measuring system requires:\u003c\/p\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\u003cli\u003eController (Hanna Instruments-7871)\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003ebar holder with amplifier circuitry (Hanna Instruments-7874)\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eMeasuring bars (Hanna Instruments-731324)\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eUndecal connector (Hanna Instruments-7164)\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cp\u003eHanna Instruments-7871 requires four bars with the additional bar used for overflow measurement.\u003c\/p\u003e\u003cbr\u003e\u003ch3\u003eOrder Information:\u003c\/h3\u003e\u003cbr\u003e\u003cp\u003eThe Hanna Instruments-7871 is supplied with mounting brackets and instructions.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354380480663,"sku":"HI-7871\/220","price":127.78,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/hi-787120_mini_level_controller_control_relay_high_and_low_220v.jpg?v=1624279023"},{"product_id":"hanna-instruments-7873-220-liquid-level-controller","title":"Hanna Instruments-7873\/220 Liquid Level Controller","description":"Hanna Instruments-7873 mini-level controller is ideal for liquid level control over distances of up to 100 meters (330 feet). It is highly compact and will fit in tight spaces.\u003cbr\u003e\u003cp\u003eThese easy-to-use controllers are ideal for nearly any liquid level application, such as industrial and municipal water treatment, nutrient tank control in farming, hydroponics, aquaculture applications and plating rinse baths.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eHanna Instruments-7873 includes an overflow alarm and can be connected to a 2-wire transmitter, which is ideal for level monitoring in remote applications.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eA complete liquid level measuring system requires:\u003c\/p\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\u003cli\u003eController (Hanna Instruments-7873)\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003ebar holder with amplifier circuitry (Hanna Instruments-7874)\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eMeasuring bars (Hanna Instruments-731324)\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eUndecal connector (Hanna Instruments-7164)\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cp\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eHanna Instruments-7873 requires four bars with the additional bar used for overflow measurement.\u003c\/p\u003e\u003cbr\u003e\u003ch3\u003eOrder Information:\u003c\/h3\u003e\u003cbr\u003e\u003cp\u003eThe Hanna Instruments-7873 is supplied with mounting brackets and instructions.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354393915543,"sku":"HI-7873\/220","price":163.4,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/hi-7873220_liquid_level_controller.jpg?v=1624279354"},{"product_id":"hanna-instruments-8410-panel-mounted-dissolved-oxygen-controller","title":"Hanna Instruments-8410 Panel Mounted Dissolved Oxygen Controller","description":"The Hanna Instruments-8410 is an extended range panel mounted Dissolved Oxygen (DO) controller that is used to maintain and monitor the concentration of DO in a wide range of applications from wastewater treatment to aquaculture.\u003cbr\u003e\u003cp\u003ehe Hanna Instruments-8410 is an extended range panel mounted Dissolved Oxygen (DO) controller that is used to maintain and monitor the concentration of DO in a wide range of applications from wastewater treatment to aquaculture. The HI 8410 uses a Galvanic probe and typically require less maintenance than a Polarographic style making it ideal for long term monitoring of aeration basins, ponds, and lakes.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe set point for controlling the activation of the relay is adjusted manually by the user. An alarm relay is also manually adjustable and is based upon a tolerance from the programmed set point. Calibration is single set point and can be done in zero oxygen solution.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe dosage mode: Automatic, Continuous ON or OFF and over dose control by setting the Overtime dosage trimmer. If the dosing relay remains continuously activated for more than the selected dosing time, the alarm relay is activated, the alarm LED will start blinking and the dosing relay will be deactivated. A jumper found on the rear panel can disable the “Over time dosage” function.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAutomatic\/Off\/manual dosing selection switch and LED on the front panel.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIn Automatic mode all the relays are controlled based on the measurement set point and alarm values. In OFF mode the dosing and alarm relays are always deactivated. The dosing LED is OFF (as relay status) and the ALARM LED is in accordance with the instrument set point, input reading, and ALARM.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIn ON (Manual) mode the dosing relay is always on. The alarm relay is still enabled. If an alarm occurs the dosing relay remains activated. If the over dose time exceeds the setting during manual mode, the alarm relay remains activated.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe front panel is protected behind a transparent splash-proof cover.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eOrder Information:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe Hanna Instruments-8410 is supplied with mounting brackets and instructions.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354419802263,"sku":"HI-8410","price":839.52,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/hi-8410_panel_mounted_dissolved_oxygen_controller_afb64799-8322-4375-a083-0c24e2766b03.jpg?v=1624279852"},{"product_id":"hanna-instruments-7874-level-transmitter","title":"Hanna Instruments-7874 Level Transmitter","description":"\u003cp\u003e\u003cspan\u003eThe Hanna Instruments-7874 transmitter has been designed to be combined with the Hanna Instruments-7871 and Hanna Instruments-7873 level controllers. The transmitter is housed in a durable and water resistant ABS body, and allows the user to easily adjust the length of the sensor bars according to the specific need.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eLevel Transmitter\u003c\/h3\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAccurate level control is critical to many industrial applications, especially for process adjustments using aggressive chemicals. Our sensor bars are built with stainless steel for long life even in harsh conditions. They are easy to install and ideal for monitoring tanks and water conditioning plants.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe Hanna Instruments-7874 transmitter has been designed to be combined with the Hanna Instruments-7871 and Hanna Instruments-7873 level controllers. The transmitter is housed in a durable and water resistant ABS body, and allows the user to easily adjust the length of the sensor bars according to the specific need.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe Hanna Instruments-7874 is supplied with a sturdy mounting bracket for quick and easy installation.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003ePlease note: Hanna Instruments-731324 measuring bar set is sold separately.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354447786135,"sku":"HI-7874","price":157.89,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/hi-7874_level_transmitter_57495ccb-1114-4b8f-abbe-df76b03ea609.jpg?v=1624280331"}],"url":"https:\/\/testallwater.co.uk\/collections\/water-level-and-process-controllers.oembed","provider":"Test All Water","version":"1.0","type":"link"}