Instruction Manual HI 8614 • HI 8614L HI 8615 • HI 8615L pH and ORP Transmitters w w w. h a n n a i n s t .
Dear Customer, Thank you for choosing a Hanna Instruments product. Please read this instruction manual carefully before using these instruments. This manual will provide you with the necessary information for correct use of these instruments, as well as a precise idea of their versatility. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst.com or view our worldwide contact list at www.hannainst.com.
The transmitters use a universal BNC socket for quick and secure connection to any electrode with a BNC connector. For HI 8614 family models the temperature compensation is performed by the transmitter's ATC circuitry if the temperature probe (HI 76608, optional) is attached. If ATC is not required, it is possible to substitute the temperature probe with a fixed resistor.
SPECIFICATIONS OF HI 8615 & HI 8615L Range Resolution Accuracy (@20°C/68°F) Typical EMC Deviation Calibration Input Impedance Output Installation Category Protection Environment Power Supply Load Dimensions Weight 4 to 20 mA / ±1000 mV 0.01 mA / 1 mV ±0.02 mA / ±5 mV ±0.25 mA / ±15 mV Offset: ±0.8 mA / ±100 mV Slope: ±0.8 mA / 90 to 110% 1012 Ohm 4-20 mA (isolated) II IP 65 0 to 50°C (32 to 122°F); RH max 95% non-condensing HI 8615: 18 to 30 Vdc HI 8615L: 20 to 36 Vdc Max 500 Ohm 165 x 110 x 71 mm (6.
The wire between the transmitter and the recorder/indicator/controller should be a PVC insulated two wire with a wire diameter of at least 0.7 mm. This wire is fed through one of the smaller cable glands. The maximum distance between the power supply and the amplifier is 300 m (1000'). It is not necessary to use shielded cable. The transmitter is protected against inversion of supply voltage. Electrode connection: connect the BNC of the cable to the BNC socket on the transmitter.
PROCEDURE • Disconnect the +ve supply cable from "+VE LOOP" terminal and connect a 20mA f.s. ammeter between the +ve cable and "+VE LOOP" terminal. • Adjust the slope trimmer until the ammeter reads 8.58 mA for HI 8614 and HI 8614L or the display shows "4.01" at 25°C. For other buffer temperatures, refer to page 12 for the appropriate mA / pH reading. If you are using pH 10.01 buffer solution adjust the slope trimmer until the ammeter read 15.43 mA at 25°C (77°F) or the value indicated at page 12.
pH CALIBRATION WITH FIXED TEMPERATURE COMPENSATION (HI 8614 family) • Take the temperature of the buffer solutions using a Checktemp or a thermometer with a resolution of at least 1°. • Connect the appropriate resistor to the "TEMP. PROBE" terminals (see page 8) depending on the temperature of the calibration solution.
• If the reading lies outside this range, adjust the slope adjustment trimmer on the transmitter for a reading just within this range. The unit is now calibrated. • Connect the ORP electrode to the module and immerse the tip of the electrode into the beaker of HI 7020 ORP solution and check that the ammeter reading lies between 13.6 and 14.2 mA for HI 8615, or the instrument reading is between 200 and 275mV at 25°C (HI 8615L only). A complete calibration of the transmitter module is advised periodically.
Please note: ELECTRODE CONDITIONING & MAINTENANCE HI 8615 or HI 8615L -1000 mV 0 mV 1000 mV 350 mV 200 mV 275 mV 1 mV = = = = = = = 4 mA 12 mA 20 mA 14.8 mA 13.6 mA 14.2 mA 12.008 mA Note: When the HI 8615 and HI 8615L are used in conjunction with the Hanna new HI 8512 indicator or HI 8720 controller, the calibration can also be performed on the indicator/ controller.
For refillable electrodes If the fill solution (electrolyte) is more than 1 cm (½") below the fill hole, add HI 7082 3.5M KCl electrolyte solution for double junction or HI 7071 3.5M KCl+AgCl electrolyte solution for single junction electrodes. For a faster response unscrew the fill hole screw during measurements. For AmpHel ® electrodes If the electrode does not respond to pH changes, the battery is run down and the electrode should be replaced. MEASUREMENT Rinse the electrode tip with distilled water.
TEMPERATURE-RESISTANCE CORRELATION TEMPERATURE CORRELATION p H SENSITIVE GLASS FORFOR HANNA p H SENSITIVE GLASS The resistance of glass electrodes partially depends on the temperature. The lower the temperature, the higher the resistance. It takes more time for the reading to stabilize if the resistance is higher. In addition, the response time will suffer to a greater degree at temperatures below 25 °C (77 °F).
INSTALLATION PROCEDURE AND EXAMPLES Monitoring the pH/ORP with Panel Mounting pH (HI 8510)/ORP (HI 8512) Indicator The HI 8614 family and HI 8615 family transmitters may be wall mounted in any convenient location near the measurement point. To minimize thermal drift due to extreme temperature fluctuations during the measurement process, particularly if the measurement is conducted outdoors, it is best to protect the transmitter in an enclosed casing.
Monitoring and Controlling the pH with (HI 8711) Panel Mounting Indicator/Regulator with Independent Dosage Control for Acid and Base 24 ACCESSORIES pH CALIBRATION SOLUTIONS HI 7004M pH 4.01 buffer solution, 230 mL HI 7004L pH 4.01 buffer solution, 500 mL HI 7006M pH 6.86 buffer solution, 230 mL HI 7006L pH 6.86 buffer solution, 500 mL HI 7007M pH 7.01 buffer solution, 230 mL HI 7007L pH 7.01 buffer solution, 500 mL HI 7009M pH 9.18 buffer solution, 230 mL HI 7009L pH 9.
pH ELECTRODES HI 1090T Screwcap PG13.5 connector, double junction, glass body HI 1110S HI 1130B/3 Screw connector, single junction, glass body BNC connector, 3 m (9.9') cable, single junction, glass body HI 1110S HI 1110T HI 1114S HI 1134B/3 Screwcap PG13.5 connector, double junction, plastic body HI 1910B BNC connector, 1 m (3.3') cable, double junction, plastic body, built-in amplifier HI 1911B BNC connector, 1 m (3.
ORP ELECTRODES HI 2930B/5 BNC connector, 5 m (16.5') cable, Pt, plastic body, built-in amplifier HI 3932B/5 BNC connector, 5 m (16.5') cable, Pt, plastic body, built-in amplifier HI 3110S HI 3130B/3 Screw-type connector, Pt, glass body BNC connector, 3 m (9.9') cable, Pt, glass body HI 4110S HI 4130B/3 Screw-type connector, Au, glass body BNC connector, 3 m (9.9') cable, Au, glass body HI 3110T Screwcap PG13.5 connector, Pt, glass body HI 4932B/5 BNC connector, 5 m (16.
EXTENSION CABLES FOR SCREW-TYPE ELECTRODES ONLY (SCREW TO BNC CONNECTOR) HI 7855/1 HI 7855/3 HI 7855/5 HI 7855/10 HI 7855/15 Extension cable 1 m (3.3') long Extension cable 3 m (9.9') long Extension cable 5 m (16.5') long Extension cable 10 m (33') long Extension cable 15 m (49.5') long RECOMMENDATIONS FOR USERS Before using these products, make sure that they are entirely suitable for the environment in which they are used.
Hanna Instruments Inc. Highland Industrial Park 584 Park East Drive Woonsocket, RI 02895 USA Technical Support for Customers Tel. (800) 426 6287 Fax (401) 765 7575 E-mail tech@hannainst.com www.hannainst.
