Instruction Manual HI 8614 • HI 8614L HI 8615 • HI 8615L pH and ORP Transmitters pH L HI 861A4TOR pH INDIC ITTER SM & TRAN www.hannainst.
Dear Customer, Thank you for choosing a Hanna Instruments Product. Please read this instruction manual carefully before using the instrument. This manual will provide you with all the necessary information for the correct use of the instrument. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst.com. These instruments are in compliance with the directives.
The transmitters use a universal BNC socket for quick and secure connection to any electrode with a BNC connector. For HI 8614 and HI 8614L 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 HI8615 & HI8615L Range 4 to 20 mA / ±1000 mV Resolution 0.01 mA / 1 mV Accuracy (@20°C/68°F) ±0.02 mA / ±5 mV Typical EMC Deviation ±0.25 mA / ±15 mV Calibration Offset: ±0.8 mA / ±100 mV Slope: ±0.8 mA / 90 to 110% Input Impedance 1012 Ohm Output 4-20 mA (isolated) Installation Category II Protection IP 65 Environment 0 to 50°C (32 to 122°F); RH max 95% non-condensing Power Supply HI8615: 18 to 30 Vdc HI8615L: 20 to 36 Vdc Load Max 500 Ohm Dimensions 165 x 110 x 90 mm (6.5 x 4.3 x 3.
Temperature (°C) Resistance (Ohms) 0 1634 10 1774 20 1922 30 2078 40 2242 50 2412 60 2590 A 2 kohm resistor is factory mounted for 25°C temperature compensation. 8 Pour small quantities of pH 7.01 and pH 4.01 solution into two clean beakers. 04 For HI 8614 & HI 8614L only: for automatic temperature compensation, connect the 2 terminals of the temperature probe (HI 76608, optional) to "TEMP. PROBE" terminals. If automatic temperature compensation is not required, short the "TEMP.
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. • Remove the protective cap from the electrode, rinse it with some pH 7.01 solution or immerse it in the pH 7 rinse solution, then immerse the pH electrode and temperature probe into pH 7.01 calibration buffer solution; shake briefly and wait for the reading to stabilize.
Under normal application, adjustment on this module may not be necessary. pH CALIBRATION WITH FIXED TEMPERATURE COMPENSATION (HI 8614 & HI 8614L only) If routine check is required, the following procedures shall be performed. • Calibrate the transmitter module using a ammeter, as explained in the previous pages. • Simulate a 4.00 mA loop current for the transmitter (i.e. pH 0.00 as Electrode input) and check for display reading.
ORP CALIBRATION (HI8615 & HI8615L) 70 20 Initial preparation Disconnect the +ve supply cable from the "+VE LOOP" terminal and connect a 20 mA f.s. ammeter between the +ve cable and the "+VE LOOP" terminal. With HI 8615L the instrument display can be used during calibration without the need to connect the ammeter. In this case the values are directly expressed in mV units. HI Pour a small quantity of HI 7020 ORP solution into a beaker.
• Set the simulator to 350 mV and adjust the slope trimmer to read 14.8 mA on the ammeter or 350 mV on the HI 8615L display (HI 8615L only). mA SLOPE ADJUSTMENT OFFSET ADJUSTMENT • 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 or the instrument reading is between 200 and 275 mV at 25°C (HI 8615L only).
Please note: -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 meter is used in conjunction with the Hanna indicator HI 8512T, or the controller HI 8720T, the calibration can also be performed on the indicator/ controller. In this case slight adjustment can be made on the indicator/ controller even if the whole system calibration is advised, always starting from the transmitter.
"shaking down" the electrode as you would do with a glass thermometer. If the bulb and/or junction are dry, soak the electrode in HI70300 storage solution for at least one hour. 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.
TROUBLESHOOTING Evaluate your electrode performance based on the following. • Noise (Readings fluctuate up and down) could be due to: - Clogged/Dirty Junction: refer to the Cleaning Procedure above. - Loss of shielding due to low electrolyte level (in refillable electrodes only): HI 7071 for single junction or HI 7082 for double junction electrodes. • Dry Membrane/Junction: soak in HI 70300 storage solution for at least one hour.
Typical Electrode Life Ambient Temperature 1- 3 years 90 °C Less than 4 months 120°C Less than 1 month High concentrations of sodium ions interfere with readings in alkaline solutions; the pH at which the interference starts to be significant depends upon the composition of the glass. This interference is the alkaline error and causes the pH to be underestimated. Hanna's glass formulations have the indicated characteristics.
Monitoring the pH/ORP with Panel Mounting pH (HI 8510)/ORP (HI 8512) Indicator Monitoring and Controlling the pH with (HI 8711) Panel Mounting Indicator/ Regulator with Independent Dosage Control for Acid and Base Controlling the pH/ORP with an Industrial Regulator Monitoring and Controlling the pH/ORP with Panel Mounting Indicator/Regulator and Dosage Control of either Acid or Base 26 27
ACCESSORIES pH ELECTRODES HI 1090T 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 9.18 buffer solution, 500 mL HI 7010M pH 10.01 buffer solution, 230 mL HI 7010L pH 10.
HI 1210T Screwcap PG13.5 connector, double junction, plastic body PG13.5 THREAD φ 12mm HI 2910B/5 BNC connector, 5 m (16.5') cable, double junction, plastic body, builtin amplifier 3/4 x 16 UNF DIA 12mm DIA 20.5mm 30mm HI 1910B 38.5mm 110mm BNC connector, 1 m (3.3') cable, double junction, plastic body, builtin amplifier 3/4 x 16 UNF 110mm ORP ELECTRODES HI 2930B/5 BNC connector, 5 m (16.5') cable, Pt, plastic body, built-in amplifier DIA 12mm 3/4 x 16 UNF DIA 12mm DIA 20.5mm DIA 20.
HI 3210T Screwcap PG13.5 connector, Pt, plastic body PG13.5 THREAD φ 12mm EXTENSION CABLES FOR SCREW-TYPE ELECTRODES ONLY (SCREW TO BNC CONNECTOR) HI 7855 SERIES CABLE CONNECTORS CONNECTOR AND 3.0 mm (0.12") CABLE WITH BNC CONNECT TO THE BNC SOCKET OF THE METER CONNECT TO SCREW TYPE ELECTRODES 30mm 110mm HI 3410S Screw connector, Pt, plastic body HI 3430B/3 BNC connector, 3 m (9.9') cable, Pt, plastic body 3/4 x 16 UNF M13 x 1.5 DIA 16 mm DIA 12mm DIA 20.5mm 25 7 mm mm 38.
WARRANTY CE DECLARATION OF CONFORMITY All Hanna Instruments meters are warranted for two years against defects in workmanship and materials when used for their intended purpose and maintained according to instructions. The probes and the electrodes are warranted for a period of six months. Damages due to accident, misuse, tampering or lack of prescribed maintenance are not covered. This warranty is limited to repair or replacement free of charge.
SALES AND TECHNICAL SERVICE CONTACTS Australia: Tel. (03) 9769.0666 • Fax (03) 9769.0699 China: Tel. (10) 88570068 • Fax (10) 88570060 Egypt: Tel. & Fax (02) 2758.683 Germany: Tel. (07851) 9129-0 • Fax (07851) 9129-99 Greece: Tel. (210) 823.5192 • Fax (210) 884.0210 Indonesia: Tel. (21) 4584.2941 • Fax (21) 4584.2942 Japan: Tel. (03) 3258.9565 • Fax (03) 3258.9567 Korea: Tel. (02) 2278.5147 • Fax (02) 2264.1729 Malaysia: Tel. (603) 5638.9940 • Fax (603) 5638.9829 Singapore: Tel. 6296.
