Easy to handle ! The thermologgers feature extensive memory capacity: 16,000 samples for 1-channel models and 8,000 samples/channel for 2-channel models. Please contact us for more information.

Test EC/TDS easily! For all growers! Contact us for more information.

The BL983314 is a simple to operate resistivity controller designed for ultra pure water, reverse osmosis, and water conditioning applications. The BL983314 resistivity controller is also ideal for continuous monitoring to process solutions. Setpoint and calibration are manually adjusted with a trimmer and the alarm relay allows for simple control About the BL983314 Resistivity Mini Controllers Fire retardant casing Selectable overdose protection system Splash-resistant cover   Readings are automatically temperature compensated with three different coefficients (β=2.4, 3.5 or 4.5 %/°C). The alarm contact can be used for connection to an alarm, pump, solenoid or dosing system. The relay contact is open when readings are higher than the setpoint, while for measurements lower than setpoint, the relay contact is closed. The hysteresis is typically 0.20 MΩ •cm from the setpoint. Measurements are displayed on the LCD and the multi-coloured LED continuously indicates if the controller is in measurement, dosing, or alarm mode. Users can choose automatic or manual dosing mode with a switch on the front panel. Manual control is particularly useful during maintenance operations, because it permits operators to enable or disable the dosing relay according to need. The overtime control system advises users when the relay is active for too long, helping to prevent over-dosage.   SKU BL983314-web Product Name Resistivity Mini Controller - BL983314 Quote Required Yes Resistivity Range 0.00 to 19.90 MΩ•cm Resistivity Resolution 0.10 MΩ•cm Resistivity Accuracy ±2% F.S. Resistivity Calibration factory calibrated Resistivity Temperature Compensation automatic and linear from 5 to 50°C (41 to 122°F) β=2.4 ; 3.5 ; 4.5 %/°C selectable through jumper on the rear panel Resistivity Dosing Relay maximum 2A (fuse protected), 250 Vac, 30 Vdc contact closed when measure < setpoint Resistivity Dosing Set Point adjustable from 0 to 19.90 MΩ•cm Resistivity Hysteresis Band 0.20 MΩ•cm Over Dosing Control adjustable, typically from 5 to approximately 30 minutes Power Consumption 10 VA Resistivity Probe HI3314 resistivity probe with 2 m (6.6’) cable (included) Power Supply BL983314-0 Dimensions 83 x 53 x 99 mm (3.3x2.1x3.9”) Weight BL983314-0 Ordering Information BL983314-0 (12 VDC) and BL983314-1 (115/230V) are supplied with HI3314 resistivity probe with 2 m (6.6’) cable, mounting brackets, transparent cover and instruction manual. read more

The BL981411 is a compact, pH process controller designed for applications where space or cost is important. The device contains a high impedance pH input and may be used with any pH electrode with a standard BNC connector. It’s adjustable dosing relay may be configured to dose above or below a user programmable pH setpoint. Users may choose from automatic or manual dosing modes allowing for easy maintenance and troubleshooting. Large Clear LCD A large LCD clearly displays the parameter you are monitoring. Fire Retardant Casing Special materials provide additional protection in the event of an emergency. BNC Connection The controller’s high impedance pH input may be used with any pH electrode with a standard BNC connector.   Adjustable Dosing Relay The BL981411 features a dosing relay which may be configured to dose above or below a user programmable pH setpoint. Selectable Overdose Protection The mini controller may be programmed to deactivate a valve, pump, or connected device if its activation continues over a selected time; adjustable from 5 to 30 minutes. Selectable Control Override With the flick of a switch, normal “Auto” operation may be overridden turning your connected device “Off” from operation or always “On.” Fuse Protected Dosing Contacts The mini controller is protected for up to a 2A load from a connected pump or device. Easy Peripheral Connection Quick-connect terminal blocks provide for easy connection to power, communication, dosing control, or sensors. Matching Pin Connection An included matching pin option helps protect the sensor from ground loop effects that may lead to erratic readings or system damage. Front View Installation cut-out dimensions are provided as well as outside panel dimensions. Side View Adjustable location brackets allow the controller to slide easily and securely into place.   SKU BL981411-web Product Name pH Mini Controller – BL981411 Quote Required Yes pH Range 0.0 to 14.0 pH pH Resolution 0.1 pH pH Accuracy ±0.2 pH pH Calibration manual, through CAL (offset) trimmer pH Dosing Relay maximum 2A (fuse protected), 250 Vac, 30 VDC pH Dosing Set Point acid or alkaline contact open=acid dosage=relay ON if measurement > setpoint contact closed=alkaline dosage=relay ON if measurement < setpoint Installation Category II Power Supply BL981411-0 Dimensions 83 x 53 x 99 mm (3.3 x 2.1 x 3.9’’) Weight BL981411-0 Ordering Information BL981411-0 (12 VDC) and BL981411-1 (115/230V) are supplied with mounting brackets, transparent cover and instruction manual. read more

Engineered to be an inexpensive solution for the hydroponic or greenhouse grower to maintain the ideal nutrient solution concentration level in the reservoir tank. The HI981413 GroLine Nutrient Dosing System is a complete solution with advanced process controller and a built in chemical dosing pump. Simply insert the probe and injection valve in-line with the re-circulation pump and supply the stock fertilizer to be dosed. All in one solution for maintaining the proper nutrient levels Industrial process probe with 1/2'' NPT threads for insertion into a re-circulation line Available in three configurations including complete kit with panel mounted flow cell HI981413 Nutrient Dosing System is designed to maintain the concentration of fertilizer nutrient solution used in hydroponics and irrigation water. The HI981413 uses an amperometric conductivity sensor to measure the amount of fertilizer in the solution. The meter can be programmed to display results as EC (electrical conductivity) or as TDS (total dissolved solids). The EC results are displayed as mS/cm while TDS is displayed as ppm with a selectable conversion factor from 0.45 to 0.99. The HI981413 was developed as a cost-effective solution for the horticulturist to maintain the ideal fertilizer concentrations by placing the probe and injection valve in-line with the re-circulation pump to provide the chemical to be dosed. Multi-color LCD The HI981413 features a multi-colored LCD to show the status of the pool controller. The display is green during normal opperation, yellow if the control is not enabled, or flashes red when an alarm is triggered. Intuitive LCD Both conductivity or TDS and temperature are displayed with status icons that show when the pump is dosing and the control mode status. Programmable Alarm System Hanna controllers allow users to enable or disable the low and high-level alarms for EC/TDS. When an alarm is activated, all dosing will stop. For added safety, the alarm system also offers overdosing protection in that if the set point value is not corrected within a programmed time interval then the meter will go into alarm status.   On-Screen Features Adjustable Flow Rate The flow rate from the dosing pumps is adjustable from 0.5 to 3.5L/h. Larger bodies of water require more chemical to be dosed than smaller ones in per unit of time. The adjustable flow rate, like the proportional band, allows for better control in maintaining a desired set point . Automatic Proportional Pump Control The peristaltic dosing pump can be controlled by simple on/off or more advanced proportional control which helps prevents overshooting of the set point. When using proportional control the flow rate that is programmed, will be impacted by the proportional band used. The closer the reading is to the set point the longer it takes for the peristaltic pump to complete one revolution. If the reading is outside the proportional band then the amount of time it takes to complete one revolution is based on the flow rate programmed. Acid Tank Level/Flow Switch Input The BL100 allows for a connection to an optional level controller or flow switch. This input can be used to disable the dosing pump when there is no chemical left in the reservoir tank or there is no flow due to the pump being turned off.   Built-in Dosing Pump Peristaltic Dosing Pump The HI981413 features a peristaltic dosing pump that is superior to diaphragm versions due to the ability to self-prime when there is no liquid in the uptake line. Brushless Motor The brushless motor does not have nay gears or brushes that can wear out. A brushless design provides for a long life and little maintenance. The compact stepper motor allows for very precision control over the dosing of the chemical. Long-life Peristaltic Tubing The industrial grade peristaltic tubing is chemical resistant and provides for a relatively long-life. As tubing stretches over time it can be easily replaced. No special tools required.   Conductivity electrode with flow cell Three Configuration Options The HI981413 is available in multiple configurations including a meter only, meter and probe, and
 a complete package that includes bypass loop
 and panel mounted flow through cell. All models include aspiration tubing with filter and dispensing tubing with injection valve. HI30003 Amperometric Conductivity/Temperature Probe The HI981413 uses the HI30003 probe that incorporates both conductivity and temperature sensors and connects to the controller with a single waterproof Quick Connect DIN connector. NPT Threads for In-line and Tank Mounting The ABS body of the probe has a 1/2” threaded fitting for insertion to an in-line “T” fitting or the flow cell. The back end part of the probe has 3/4” NPT threads for submersion/ tank mounting. The probe body has a hex fitting for tightening snuggly with a wrench.    SKU HI981413-web Product Name Groline Nutrient Dosing System-HI981413 Quote Required Yes EC Range 0.00 to 10.00 mS/cm EC Resolution 0.01 mS/cm EC Accuracy 2% F.S. EC Calibration User calibration TDS Range 0 to 9900 ppm, depends on TDS factor i.e. with TDS factor 0.5, range 50 to 5000 ppm with TDS factor 0.7, range 70 to 7000 ppm TDS Resolution 1 ppm TDS Accuracy 2% F.S. EC/TDS Temperature Compensation automatic Temperature Correction Coefficient β can be set from 0%/°C to 2.4%/°C; default is 1.9%/°C EC to TDS Conversion Factor TDS factor selectable from 0.45 to 0.99 EC/TDS Dosing Set Point on/off control using adjustable set point (0.10 to 10.00 mS/cm; 45 to 9900 ppm, depends on TDS factor) proportional control 0.10 to 10.00 mS/cm; 45 to 9900 ppm, depends on TDS factor EC/TDS Proportional Band 0.05 to 1.00 mS/cm; 23 to 990 ppm, depends on TDS factor EC/TDS Hysteresis Band 0.05 to 0.50 mS/cm; 23 to 495 ppm, depends on TDS factor Temperature Range -5.0 to 105.0°C; 23.0 to 221.0°F* Temperature Resolution 0.1°C; 0.1°F Temperature Accuracy ±0.5°C; 1°F Dosing Control startup delay timer at power-on (0 to 600 sec.) Pump flow control 0.5 to 3.5 Liter/hour (0.13 to 0.92 Gallon/hour) and maximum output pressure 1 atm (14 psi) manual control for pump priming (defined in setup) Alarm Relay Set Point triggered after 5 sec. if the controller records consecutive readings over or under threshold values Over Dosing Control overtime protection (1 to 180 min. or Off) Digital Input Signal galvanically isolated external switches can be attached to stop the pump and activate the alarm (low reagent level) when the switch is open and level alarm is configured in Setup Backlight intuitive alarm system, using red, yellow and green color coded backlight Power Consumption 15 VA Enclosure wall mounted, built-in pump Power Supply 100 - 240 Vac, 50/60 Hz Environment 0 to 50°C (32 to 122°F); RH max. 95% non-condensing IP Rating IP65 Dimensions 90 x 142 x 80 mm (3.5 x 5.6 x 1.8”) Weight 908 g (36 oz.) Ordering Information HI981413-00 is supplied with HI981413 controller, HI30033 EC/TDS/temperature probe, HI7031-012 conductivity calibration solution (1413 μS/cm - 120 ml), plastic beaker, power connection cable, instruction manual and quality certificates for instrument and probe. Notes *The temperature range may be limited by the probe’s limits.   read more