Chlorine From drinking and wastewater treatment to pool and spa sanitation, monitoring chlorine levels has an important bearing on public health as well as ROI and efficiency for heating system and industrial applications. As one of the oldest and most common forms of disinfection, chlorine improves water quality by destroying disease-producing microorganisms, and by reacting with other organic and inorganic substances. Chlorine levels must be actively monitored to ensure sufficient chlorine is present for disinfection, as well as to control adverse effects such as taste, odor, and potential reactions with organic matter to form harmful disinfection byproducts. Chlorine is a strong oxidising agent that destroys mostly organic pollutants and bacteria and can combine with nitrogen containing compounds, forming chloramines. When dosing chlorine for disinfection, only a portion of the dosed chlorine remains active to actually continue the disinfection process. DPD Colorimetric method  The PCA Analysers uses DPD Colorimetric method in which N, N-Diethyl-p-phenylenediamine indicator and a buffer are mixed together with the sample. The resulting chemical reaction causes a magenta color to form in the presence of chlorine. The color intensity is proportional to the concentration. The color intensity is measured photometrically (light source at a specific wavelength and a photodetector) and converted to chlorine concentration, in mg/L, which is displayed on the front panel. The sampling interval for chlorine measurement is adjustable from 3 to 90 minutes. The PCA has a dosing relay for the addition of chlorine by a dosing pump or chlorine generator when a reading is below the programmable set point. The technology used by the PCA for chlorine measurement is the same as that found in portable and benchtop colorimeters providing for consistent results when performing process verification with one of those types of meters. Amplified pH electrode The PCA Family also uses the HI1005 amplified pH electrode with a built in pt100 temperature sensor and matching pin to measure both pH and temperature. The built in amplifier and matching pin provide for exceptional performance against any electrical noise generated by pumps and motors. Analog output The PCA340 features two selectable 0-20 or 4-20 mA signal output that are scalable for the transmission of readings to external recording devices. The analog outputs can also be set for dosing and used with dosing pumps that accept a 4-20 mA analog input. The analog outputs can be used for any of the three measured parameters.   PCA Series Controller FEATURES/BENEFITS: Backlit LCD Display  The PCA Family has a backlit display that is easy to read from a distance and allows for up to three parameters to be displayed at a time. Nema 4X Protection The PCA  Analysers are  enclosed in waterproof casing for superior protection against the elements. The front door of the case has a window for the measurement display while also shielding the DPD reagents from UV light to prevent premature degradation.  DPD Chlorine Measurement Method The DPD colorimetric method is one of the most common and reliable methods to measure chlorine. The PCA Family can use either free or total chlorine reagents and allow for 16,000 measurements to be performed. Colorimeter Diagnostics Advanced diagnostics allow for easy troubleshooting of the colorimeter. In the setup menu it is possible to select an option that allows the user to determine the difference between a dark read (LED off) and a blank read (LED on). These Analuzers also automatically performs this check in order to determine when to alert the user that the sample cell needs to be cleaned.  Reagent Reminder The PCA family has a reagent reminder feature to alert the user when the reagents are running low. When the reagents are changed the counter is reset and the meter automatically tracks the number of readings performed. Amplified pH/Temperature Probe An integrated pt100 temperature sensor allows for automatic temperature compensation of pH measurements and allows for monitoring temperature as well. The built in amplifier and matching pin provides for exceptional performance where other probes fail when placed in line with pumps and motors.  Data Logging  The analyzers can store up to 3500 readings (at least 7 days worth of records when set to a a3 minutes sampling interval) that can be reviewed or downloaded to a Windows compatible PC using the HI92500 software and the RS485 serial port. Logged records contain the date time and reading of all parameters measured along with any alarm status. GLP Data  The GLP data allows for the user to review the data and time for the last Chlorine and pH calibration. Digital RS485 Output The PCA Family has a RS485 digital output that allows for connection to a Windows compatible PC running the HI92500 software.  The software allows for remote monitoring, review of logged data, events and errors, and executing setup options. Two Analog Outputs (PCA340) The PCA340 features two selectable 0-20 or 4-20 mA signal output that are scalable for the transmission of readings to external recording devices. The analog outputs can also be set for dosing and used with dosing pumps that accept a 4-20 mA analog input. The analog outputs can be used for any of the three measured parameters. Two Dosing Relays  The dosing relays of these analyzers can be connected to a pH and/or chlorine dosing pumps. The chlorine relays are proportionally controlled while the pH relay can be set for on/off or proportional control. The proportional controloffers very fine control of doing to prevent any overshoot and wastage of chemicals. Alarm Relay One SPDT alarm relay is provided that can be activated by adjustable upper and lower chlorine, pH and temperature limits.  Error Relay  One SPDT error relay is provided and is activated when an error is present including a problem with the colorimeter such as when the reagent counter has reached zero, or when a reading is outside the range for a measured parameter. Warning Messages  Error messages are displayed when the reagents are expired or low and if the colorimeter cell needs to be cleaned.   SKU PCA310-02-web Product Name Chlorine, pH, ORP, and Temperature Analyzers - PCA300 Series Quote Required Yes pH Range (PCA320, PCA330 and PCA340) pH Resolution (PCA320, PCA330 and PCA340) pH Accuracy (PCA320, PCA330 and PCA340) pH Calibration automatic one or two points; one point process calibration pH Dosing Relay ON/OFF or proportional, relay or 4-20mA output pH Dosing Set Point selectable from 0.10 to 2.00 pH pH Hysteresis Band selectable from 0.05 to 2.00 pH pH Sampling Rate adjustable from 3 to 120 seconds ORP Range (PCA330) ORP Resolution (PCA330) ORP Accuracy (PCA330) Temperature Range (PCA320, PCA330 and PCA340) Temperature Resolution (PCA320, PCA330 and PCA340) Temperature Accuracy (PCA320, PCA330 and PCA340) Free Chlorine Range 0.00 to 5.00 mg/L (ppm) Free Chlorine Resolution 0.01 mg/L (ppm) Free Chlorine Accuracy ± 8% or ±0.05 mg/L whichever is greater Total Chlorine Range 0.00 to 5.00 mg/L (ppm) Total Chlorine Resolution 0.01 mg/L (ppm) Total Chlorine Accuracy ± 8% or ±0.05 mg/L whichever is greater Chlorine Calibration One point process calibration Chlorine Sampling Rate adjustable from 3 to 90 minutes Chlorine Dosing Relay proportional relay or 4-20 mA output Chlorine Dosing Set Point selectable from 0.1 to 5 mg/L (ppm) Dosing Control SPDT contact with 5A, 230V resistive load Alarm Relay Set Point SPDT contact with 5A, 230V resistive load Analog Ouput Signal 0-10 mV, 0-100 mV, 0-1 V, 4-20 mA, 0-20 mA (PCA310, PCA320, PCA330) 4-20 mA, 0-20 mA (PCA340) Baud Rate 1200; 2400; 4800; 9600 bps Enclosure NEMA-4X standard, molded fiberglass polyester with transparent Lexan window Inlet Sample Pressure 0.07 to 4 bar with no external pressure regulator (for pressure exceeding four bar an external pressure regulator is required) Sample Flow Rate 100 to 300 mL/min Sample Temperature 5 to 40°C (41 to 104°F) Sample Inlet/Outlet Connection 12mm (1/2”) male NPT fitting Drain Connection 10mm (3/8”) barb Logging Memory 3500 log records Connectivity RS485, galvanic separated Display character LCD 4 lines x 20 characters (languages Power Supply 115 VAC ±10% or 230 VAC ±10%; 50/60 Hz; 20 VA Dimensions 318 x 267 x 159 mm (12.5 x 10.5 x 6.25’’) Weight 5 kg (11 lb.) without reagents Ordering Information Each analyzer is supplied complete with read more

Pool Line pH and ORP Controllers with Hanna Cloud Connectivity BL122 and BL123 are designed to maintain constant pH and ORP (disinfectant) levels in swimming pools, hot tubs, and spas and offer the added benefit of allowing remote connection and access to devices via the Hanna Cloud web app. Available in two configurations, the basic version allows for direct installation of probe and chemical injection fittings into existing piping. Also available is a panel mounted version with a bypass flow cell that allows for calibration and maintenance of the probe without having to shut down the re-circulation pump.   The chlorine level is measured based on the ORP or REDOX principle. An increase of the ORP value correlates with an increase of the free chlorine level. pH and disinfectant testings are made together for more efficient disinfection and control. The efficacy of sanitizers, is dependent on a controlled pH value. The ORP value is the most consistent indicator of the sanitizing effectiveness of the pool/hot tub or water treatment. Typically 650-750 mV at 7.2 pH indicates proper water treatment (all harmful bacteria are killed in matter of seconds). pH and disinfectant testings are made using the HI1036-1802 combined electrode installed inline or in flow cell. To prevent the ground loop effects from causing erratic readings and damage to the system the electrode has a matching pin considered the “earth ground“ connection. It was specially designed to detect the broken electrode based on a shifted ISO potential value. The HI1036-1802 uses a Ag/AgCl reference with 3.5 M KCl. The ORP values are referenced to it.   Remote Access with Most Browsers hannacloud.com Hanna Cloud is a web based application that connects you to measurement devices such as the BL122 and BL123. Measurements and data storage are accessible from your PC, tablet or phone. Multiple registered devices may be connected to Hanna Cloud. Measurements, trends, history, device settings, alarms and messages are transmitted to your “Dashboard” as your instrument measures and controls your process. Multiple secondary users may also be added to your device account to monitor measurements and receive email or pop-up messages from your process device.   Hanna Cloud Features Measurement Measurement, alarm, hold and pump status are easily viewable. Notifications Select which notifications you would like to receive. GLP Review of GLP data including date and time of the last calibration.   Logging Log history in table form. Can be transferred as a PDF or csv. Graphing Use a graph to view trends over the last 12 hours or change to a specific time period.   Dosing & Control Peristaltic Dosing System The BL122 and BL123 are equipped with two peristaltic dosing pumps with replaceable chemical resistant tubing. When using a diaphragm pump, chlorine gas formed from outgassing can collect in the pump head resulting in the pump losing its prime; the buildup of chlorine gas is not a problem with peristaltic pumps that use rollers and tubing. Proportional Pump Control Pool LIne controllers feature proportionally controlled dosing pumps. Based on the sensitivity of the process to chemical addition, these controllers allow the user to adjust a proportional band. This setting determines the amount of time that the pumps are dosing as a percentage of the deviation from the set point allowing for very fine control in maintaining the desired set point. 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 small bodies since it takes more chemical to realize a change in the reading. The adjustable flow rate, like the proportional band, allows for better control in maintaining a desired set point. ORP Dosing Consent With chlorine disinfection there is an inverse relationship between pH and ORP. As the pH level increases, the ORP level decreases. The BL120 utilizes a dosing consent feature that will not dose chlorine until the pH value is first corrected since it is possible to have a low ORP value even though there is sufficient chlorine. The dosing consent feature prevents wastage of chemicals and avoids a higher than necessary chlorine concentration.   Connections & Display Circulation Pump Monitoring An inline flow switch or a mechanical relay connected to the re-circulation pump power source may be connected to the hold input of the Pool Line controller. With no flow or when no power is applied to the re-circulation pump, the hold circuit disables the dosing pumps. This will prevent any dosing of chemical when there is no movement of water in the system. Multifaceted Display The versatile display of the BL122 and BL123 allows for three screen modes. The LCD can display all three parameters at one time, a 3-second cycle of single parameters, or a real-time plot screen with options for parameter selection, zooming, and log recall. Programmable Alarm System Hanna controllers allow users to enable or disable the low and high level of alarms for all parameters. When an alarm is activated, all dosing will stop. The alarm system also offers overdosing protection if the value is not corrected within a specified time interval then the meter will go into alarm status. Multicolored LED Indicators The Pool LIne cloud controllers offer multiple LED indicators for status, servicing, and pump operation. The STATUS LED changes color based on operational state; green when setting are in range, yellow when user intervention is required, and red for problems. The SERVICE LED indicates any alarms and process errors experienced by the controller.   Communication & Security Automatic Logging The readings for each parameter are automatically logged every 10 seconds. A new log is started each time the instrument is calibrated or at the start of a new day. Logged data include pH, ORP, and temperature values, last calibration data, setup configuration, and any event data. Each log is saved as a .csv file for easy transfer. USB Connectivity For review and storage the users can easily transfer data to a PC using a flash drive and the USB port. Password Protection Hanna’s BL122 and BL123 controllers feature a password protection solution that offers restricted access to calibration, setup, and review of logged data. The password can be set and enabled/disabled during general setup of the instrument. Multiple Configurations The controller is available in one of two configurations: an in-line model which allows for direct installation of the probe and chemical injection fittings into existing piping (BL122-10 & BL123-10) or a panel mounted system with a bypass flow cell (BL122-20 & BL123-20). The bypass flow cell allows for calibration and maintenance of the probe without having to stop the recirculation pump. Digital Combination Probe The HI1036-1802 is a digital probe that measures pH, ORP, and temperature. This probe also incorporates a potential matching pin. The pin is considered the “earth ground” connection and is used to prevent ground loop effects from causing erratic readings and damage to the system.   SKU BL122-web Product Name Cloud Enabled Swimming Pool Controller with Built-in Dosing Pumps Quote Required Yes pH Range 0.00 to 14.00 pH pH Resolution 0.01 pH pH Accuracy ±0.05 pH pH Calibration pH buffer calibration pH Temperature Compensation Automatic -5.0 to 105.0 ºC (23.0 to 221.0 ºF) ORP Range ±2000 mV ORP Resolution 1 mV ORP Accuracy ±5 mV Temperature Range -5.0 to 105.0 ºC (23.0 to 221.0 °F) Temperature Resolution 0.1 °C (0.1 ºF) Temperature Accuracy ±1 ºC (±1.8 ºF) Dosing Control Proportional feed using adjustable set point and adjustable proportional band. Delay to start at power-on and overdosing protection using. Over feed safety timer. Consent Relay pH dosing interlocked with ORP Alarm Relay Set Point High and Low with enable/disable option for all parameters. Alarm is triggered for 5 consecutive readings over/under threshold. Over Dosing Control Over feed safety timer. Analog Ouput Signal 4 to 20 mA (3), sourcing, configurable Output impedance ≤ 500 Ohm Accuracy < 0.5 % FS Galvanically isolated up to 50 V relative to earth Analog outputs only available with BL123-10 and BL123-20 Digital Input Signal Galvanic isolated, powered contact type Low level in acid/base tank (contact open) Low level in chlorine tank (contact open) Hold input (contact open) Power Consumption 10 VA Multi-parameter Probe HI1036-18XX (02, 05, 10, 15, 20 m of cable) pH/ORP/Temperature with matching pin combined digital probe Logging Type Automatic Log of measurements (pH, ORP, Temperature) and events Logging Memory 60 days logging with 10 s period (or 100 logs) Connectivity USB GLP pH/ORP Power Supply 100 - 240 VAC Environment 0-50 ºC (32-122 ºF) Max 95% RH non-condensing Dimensions 245 x 188 x 55 mm (73 mm with pumps) 9.6 x 7.4 x 2.2” (2.9” with pumps) Weight 1700 g (60 oz) Ordering Information In-Line Configuration
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The HI-97106 is a compact and versatile low, medium, high, and ultra-high range photometer designed to accurately determine chemical oxygen demand. Suitable for field or bench measurements in the water and wastewater industries, plus other industries wanting to measure COD. Also this instrument is a waterproof portable photometer with an advanced optical system that uses a Light Emitting Diode and a narrow band interference filter for accurate, repeatable readings. The optical system is sealed from outside dust, dirt, and water. The meter uses an exclusive positive-locking system to ensure that the vials are placed into the holder in the same position every time. With the CAL Check™ functionality, users are able to validate instrument performance at any time. Hanna Instrument’s CAL Check cuvettes are certified against NIST-traceable reference instruments. The built-in tutorial mode guides users step-by-step through the measurement process. The tutorial mode includes all steps required for sample preparation, the required reagents, and quantities. Features: Sophisticated optical system Waterproof IP67, floating case Backlit LCD The 128 x 64 Pixel LCD allows for a simplified user interface Meter validation using certified CAL Check cuvettes Tutorial mode guides the user step-by-step Includes auto-data logging features to easily record water testing results Battery status indicator and auto-shut off The auto-off feature automatically shuts off the meter after 15 minutes of inactivity to conserve battery life Compact size - Measures 142.5 mm (5.6”) x 102.5mm (4”) and only 50.5 mm (2”) thick More about the photometer CAL Check™ validation - Validate instrument performance at any time using CAL Check™ cuvettes made with NIST traceable standards. Removable vial adapter - The vial adapter can be removed to accommodate HI-97106-11 CAL Check™ cuvettes for validation. On-Screen guides - Step-by-step on-screen guidance. Auto-data logging - Data autolog helps users keep track of all measurements. Data is automatically saved every time a measurement is made. The data log can hold 200 individual measurements. When the data log is full, the meter will rewrite the oldest data point. Waterproof and floating, IP67 meter design HI-97106 On-Screen display and operating keys Method and Parameter – The chosen parameter and method used is displayed on-screen along with the reading. You can also see the battery status indicator and auto-shut off - The auto-off feature automatically shuts off the meter after 15 minutes of inactivity in order conserve battery life. Virtual keys - Menu available at the touch of a button Dedicated help - A dedicated help key provides information relating to the current meter operation, and can be used at any stage in the setup or measurement process to show contextual help.   Chemical Oxygen Demand Low Range      Range 0 to 150 mg/L (as O₂)  Resolution 1 mg/L  Accuracy ±5 mg/L or ±4 % of reading at 25°C, whichever is greater  Method Adaptation of the US EPA 410.4 Approved Method for the COD Determination on Surface Waters and Wastewaters  LED 420 nm   Chemical Oxygen Demand Medium Range    Range 0 to 1500 mg/L (as O₂)  Resolution 1 mg/L  Accuracy ±15 mg/L or ±4 % of reading at 25 °C, whichever is greater  Method Adaptation of the US EPA 410.4 Approved Method for the COD Determination on Surface Waters and Wastewaters  LED 610 nm   Chemical Oxygen Demand High Range    Range 0 to 15000 mg/L (as O₂)  Resolution 1 mg/L  Accuracy ±150 mg/L or ±2 % of reading at 25 °C, whichever is greater  Method Adaptation of the US EPA 410.4 Approved Method for the COD Determination on Surface Waters and Wastewaters  LED 610 nm   Chemical Oxygen Demand UHR    Range 0 to 60.0 g/L (as O₂)  Resolution 0.1 g/L  Accuracy ±0.5 g/L ±3 % of reading at 25 °C  Method Adaptation of the US EPA 410.4 Approved Method for the COD Determination on Surface Waters and Wastewaters  LED 610 nm   Measurement system    Light source LED  Bandpass filter wavelength 420 nm & 610 nm; bandwidth 8 nm; wavelength accuracy ±1.0 nm  Light detector silicon photocell  Cuvette Type round, 16 mm diameter   Photometer Specifications    Auto logging 200 readings  Display 128 x 64 pixel B/W LCD with backlight  Auto-off After 15 minutes of inactivity (after 30 minutes of inactivity if a Zero has been done but not a read)  Battery type / Life 1.5 V AA alkaline (3 pcs.) / > 10000 measurements (without backlight)  Environment 0 to 50 °C (32 to 122 °F); 0 to 100 % RH, non-serviceable  Dimensions 142.5 x 102.5 x 50.5 mm (5.6 x 4.0 x 2.0'')  Weight 380 g (13.4 oz.); with batteries  Casing IP67 rating, floating   Ordering Information HI-97106 is supplied with adapter for 16 mm vial, 1.5V AA Alkaline batteries (3 pcs.), instrument quality certificate, and quick reference guide with instructions for manual download. read more

BL1.5 BlackStone pumps have been designed to meet the ever changing needs of industry. With their broad, flat base and mounting holes for tank, shelf or floor mounting (horizontal), the pumps can be easily mounted anywhere in your plant. The rear of the pump housing also provides mounting holes to facilitate vertical mounting: wall, tank or machine. Since the pump valve assembly and controls for the unit are located on the front of the pump, there is never a problem with installation or flow adjustments. BlackStone's positive displacement solenoid driven pumps use a minimum number of moving parts, therefore reducing the chance of mechanical failure. Part wear and oiling associated with motor driven pumps (ball-bearings, gear drives and cams) are not a concern with these pumps. Blackstone pumps are more accurate than standard pumps due to the positive displacement design ensuring each stroke is identical to the strokes before and after it, thus keeping the flow rate consistent. A wide range of BlackStone pumps with different dosing capacities are available for your specific dosing needs. Each pump is supplied with disch Simple Operation BlackStone pumps are equipped with a single control for pump output. The external flow rate control (potentiometer) on the face of the pump allows you to adjust the percentage of flow from 0 to 100% of the pump's rated capacity. This feature eliminates the need to worry about stroke lengths and power settings. An LED indicator lights up each time a stroke begins, allowing the user to assess the stroke rate from a distance. High Quality Materials BlackStone pumps have been manufactured with the highest level of mechanical precision from materials chosen for their inherent ability to resist the effects of aggressive chemicals. When you select a Blackstone pump, you are eliminating the time consuming effort involved in picking the right material for your application. Blackstone pumps are supplied with the highest quality material as standard equipment—not optional. The diaphragm utilizes one-piece construction of PTFE, which unlike conventional laminated diaphragms, will stand up to the test of time and wear. Ball valves are constructed in glass. The pumphead and O-rings are made of PVDF, PTFE and FPM/FKM which offer unsurpassed resistance. The chemical resistance chart (right) shows how well PVDF and PTFE stand up to some of the most aggressive chemicals. Rugged Design Blackstone pumps are completely sealed during assembly and offer IP65 protection against splashes and spills providing excellent protection even in hostile environments. The fiberreinforced polypropylene housing stands up to aggressive chemicals while offering superior strength under tough industrial conditions .   SKU BL20-2 Product Name Blackstone 18.3 L/h Chemical Dosing Pump - BL20-2 Quote Required Yes Power Consumption approximately 200 W Maximum Flow Rate 18.3 lph (4.8 gph) Dosing Pump Casing fibre-reinforced polypropylene Body Material diaphragm in PTFE, glass ball valves and O-rings in FPM/FKM, polyethylene 5 x 8 mm tubing Dosing Pumphead Materials pumphead in PVDF (PolyVinyliDene Fluoride) Self Priming maximum self-priming height is 1.5 m (5 ft.). Power Supply 220/240; 50-60Hz Environment 0 to 50°C (32 to 122°F); RH max 95% non-condensing IP Rating IP65 Dimensions 165 x 194 x 121 mm (6.5 x 7.6 x 4.8'') Weight approx. 3 kg (6.6 lb.) read more

HI6221 Advanced pH/ORP Benchtop Meter Laboratory Measure pH/mV (pH) or mV/Rel. mV (ORP) with Temperature HI6221 is a streamlined benchtop meter with a large touch screen display, comprised of a housing and an integrated pH / ORP measurement module. Compact and easy to operate, the benchtop meter is delivered with Hanna Instruments HI1131B double junction combination pH electrode, together with HI7662-TW temperature probe. HI1131B is a glass body, double junction, refillable pH electrode with an indicating sensor made of High Temperature (HT) glass. The double junction reference and HT glass design allow the HI1131B to be used in a wide variety of applications including samples with metals and elevated temperatures. Probe connection to the unit is secured through a galvanically isolated BNC connection. HI7662-TW stainless steel temperature probe allows the meter to automatically temperature compensate (ATC) pH measurements.     This system responds to a complex range of measurement and monitoring requirements, providing accuracy, reproducibility, and reliability. HI6221 is supplied with an electrode holder that has a flexible arm. The holder can be mounted quickly and provides secure support for electrodes while taking measurements in sample containers. User interface 7-inch capacitive touch screen with multi-touch support Capacitive touch back, home and system menu keys User-friendly icons and symbols allow users to easily navigate and interpret the instrument functions. The user can select between five different views: Basic measurement configuration Simple GLP with calibration information Full GLP with electrode status and calibration point details Live updated, interactive graph Tabulated data with date, time, and notes Measurement Measure pH/mV (pH) or mV/Rel.mV (ORP) with temperature Application-specific profiles allow quick and direct measurement without the need to update the sensor and system settings Active log during measurement o Measurement stability indicator (using the Stability Criteria setting) Reading modes: direct and direct/autohold Temperature compensation can be Automatic (using temperature probe) or set manually Audible and/or alarm messages for measurements outside of predefined limits Galvanic isolation for pH/ORP measurement Calibration 5-point pH calibration with automatic recognition for standard buffers (Hanna and NIST buffers) Choice of standard or custom buffers for calibration Non-volatile memory saves data and settings Logging Data log collection of at least 1,000,000 data points (with time and date stamp) Logging types: manual, automatic, autohold Sample ID for manual and Autohold data Connectivity features & services Transfer logged data to a USB thumb drive Log files that include measurements and calibration data (as .csv file) FTP and email for log export via Ethernet and Wi-Fi connection USB type A for USB stick, keyboard, and printer USB type C for USB stick and PC connection Help section for meter guidance Video support presentation of main functionalities     Customize calibration options such as Last Calibration, Automatic, semi-automtic or manual calibration, First Calibration Point, daily or periodic Calibration Reminder, and buffer Groups.     Capacitive touch screen with multi-touch support The benchtop unit has a 7-inch color display with 800 x 480p resolution. The capacitive, multi-touch screen supports video playback and data plotting. System Menu key This key will enter the system menu where User accounts, System Settings, and Logging can be configured. The Help menu is also accessed on the system menu screen. Measurement setup menu Opens sensor setup parameters. Direct/Autohold readings When Direct/Autohold is selected, measurement reading is held on display when measurement stability is reached. This option removes the subjective nature of stability as a measurement that has not reached equilibrium will not be used. When not selected, sample measurements are displayed continuously.   HI6221 is supplied with: HI1131B pH electrode; HI7662-TW temperature probe pH calibration starter kit consisting of: pH 4.01 buffer solution sachet (2 pcs.) pH 7.01 buffer solution sachet (4 pcs.) pH 10.01 buffer solution sachet (2 pcs.) HI700601 electrode cleaning solution sachet (2 pcs.) HI7082 3.5M KCl electrolyte solution (30 mL) HI764060 electrode holder Capillary pipette 24 VDC power adapter USB-C to USB-A cable Quick reference guide with instrument quality certificate.     More Information SKU HI6221 Product Name Advanced pH/ORP Benchtop Meter- HI6221 Quote Required Yes pH Range -2.0 to 20.0 pH; -2.00 to 20.00 pH; -2.000 to pH Range 20.000 pH pH Resolution 0.1 pH; 0.01 pH; 0.001 pH pH Accuracy ±0.1 pH; ±0.01 pH; ±0.002 pH (±1 last significant digit) mV Range ±2000.0 mV mV Resolution 1 mV; 0.1 mV mV Accuracy ±0.2 mV ±1 last significant digit Temperature Range -20.0 to 120.0 °C; -4.0 to 248.0 °F; 253.0 to 393.0 K Temperature Resolution 0.1 °C / 0.1 °F / 0.1 K Temperature Accuracy ±0.2 °C / ±0.4 °F / ±0.2 K Relative mV offset range ±2000.0 mV pH Calibration Calibration points Up to 5 pH Calibration Type Automatic; Semiautomatic; Manual pH Calibration Standard buffers Hanna and NIST pH Calibration Standard buffers pH 1.68, 3.00, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45'' pH Calibration Custom buffers Up to 5 pH Calibration Custom group Up to 5 pH Calibration 1st calibration point Offset or Points (user setting) pH Calibration Reminder Disabled pH Calibration Reminder Daily pH Calibration Reminder Periodic Temperature Compensation Automatic or Manual Reading Modes Direct; Direct/Autohold Reading Stability criteria Accurate; Medium; Fast Reading Isopotential 7.000 or 4.010 Reading Sampling rate 1000 ms pH Views Basic Measurement (pH, mV, Rel.mV, Abs.mV) pH Views Basic Temperature, Stability status pH Views Simple GLP Basic view information pH Views Simple GLP Last calibration date, electrode offset, average slope, and electrode condition pH Views Full GLP Simple GLP information and calibration point details pH Views Table Measurements updated every second are displayed in table pH Views Graph (Plot) pH (or mV) and temperature versus time graph can be panned or zoomed (pinch-to-zoom technology) Logging Type Automatic, Manual, Autohold Logging Number of records 50 000 maximum per file / Stores at least 1 000 000 data points per user'' Logging Automatic interval 1, 2, 5, 10, 30 seconds Logging Automatic interval 1, 2, 5, 10, 15, 30, 60, 120, 150, 180 minutes'' Logging Sample ID Incremental mode Logging Export option .csv file format Logging Export option Users Up to 9 users and admin. account (default) Connectivity USB-A 2 ports for keyboard input or USB thumb drive Connectivity USB-C 1 port for PC connectivity and USB-C type thumb drive Connectivity Wi-Fi & Ethernet FTP / Web server Log transfer and download Email Connectivity RS232 Connecting peripherals Power supply DC adapter 100-240AC to 24VDC 2.5A Environment 0 - 50 °C / 32 - 122 °F / 273 - 323 K maximum 95% RH non-condensing Dimensions 205 x 160 x 77 mm (8.0 x 6.2 x 3.0 “) Weight Approximately 1.2 kg (2.65 lbs.) read more