Advanced pH/ORP Meter 850055 Instruction Manual 1
TABLE OF CONTENTS INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . 5 FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 POWER SUPPLY . . . . . . . . . . . . . . . . . . . . . . . 7 LCD DISPLAY. . . . . . . . . . . . . . . . . . . . . . . . . . . 8 KEYPAD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 SETUP MODE. . . . . . . . . . . . . . . . . . . . . . . . . .. 10-18 P1.0 Memory Transmission . . . . . . . . . . . . . 10 P2.0 Clear Memory . . . . . . . . . . . . . .
TABLE OF CONTENTS Temperature Compensation. . . . . . . . . . . . . . . . 24 Hold Function . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Record Memory . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Recall Memory . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Recall Maximum & Minimum . . . . . . . . . . . . . . . . 26 Backlight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Auto Power Off . . . . . . . . . . . . . . . . . . . . . . . . . . 26 MAINTENANCE . . .
INTRODUCTION Thank you for purchasing the Advanced pH/ORP Meter. This meter reads the pH (balance of alkalinity and acidity) and ORP (oxidation reduction potential) in the determination of water quality in labs, industrial and municipal waste water aquariums, fish hatcheries, environmental testing and other applications.
FEATURES Multi-display LCD screen Automatic buffer recognition 5 points pH calibration Hold function Maximum and minimum Backlight for dark environment operation Easy to view probe calibration data “Ready” icon on LCD display indicates stability for reading USB connection for online logging and uploading 99 memories to PC for analysis Automatic or manual temperature compensation External power adapter (optional) for long use testing Auto power off t
POWER SUPPLY The meter is powered by 4 “AAA” type batteries or a 9 Volt external adapter. Insert batteries into the battery compartment observing correct polarity and secure. Tripod mountable Observe correct polarity When the battery is low the “ display; replace the batteries.
LCD DISPLAY LCD display indicates pH, mV, ORP (mV). Icon pH, mV indicates the unit of measure displayed. READY indicates the reading is stable. MAX, MIN indicate maximum or minimum memory value. HLD Holds the current reading on the display. REC indicates the meter is in recall mode. The two digits to the right of °C °F on the display indicate the total number of records that contain stored data. The are real time Y-M-D (Year-Month-Date) or H:M:S (Hour-Minute-Second).
KEYPAD POWER/SET Press to turn meter on/off. Press and hold for more than 1 second to enter SET mode. CAL/ESC Switch between NORMAL and CALIBRATION mode. Press to enter manual temperature setting. In calibration, setting or recall mode, press to return to normal. HLD/REC Press to freeze reading. Press again to release. Press for more than 1 second to switch between NORMAL and RECALL mode. MODE/▲ Press to switch mode. Press to increase setting value. MEM/▼ Press to save current reading.
SETUP MODE The advanced Setup Mode allows you to customize the following meter preferences and defaults: P1.0 Memory Transmission P2.0 Clear Memory P3.0 Electrode (pH probe) P4.0 Buffer Solution (pH) P5.0 Ready Function P6.0 Temperature Units P7.0 Real Time Clock P8.0 Reset To enter Setup Mode, press SET for more than 2 seconds while the meter is in Normal Mode. Note... To exit Setup Mode without saving, press ESC until the Normal Mode appears.
SETUP MODE displays under the “TR” icon. 3. Press MN/MX/AV. The “OUT” icon flashes on the upper display and P1.1 displays under the “OUT” icon. This indicates that the memories are transferring. After transmission, the LCD will return to P1.0. Note.. The meter can store up to 99 records for each parameter. If you want to transmit data for a different parameter, press ▲ to select your parameter before entering setup. P2.0 Clear Memory 1.
SETUP MODE 4. Press MN/MX/AV to enter P2.1. The default “NO” icon flashes on the middle display and P2.1 appears in the lower display. 5. Press ▲ to change the status from “NO” on The display to “YES” and then press MN/MX/AV again to confirm clearing of all memory. The LCD display will return to P2.0 when memories are deleted. CAUTION: THE MEMORY CLEAR PROGRAM IS DESIGNED TO CLEAR 99 MEMORIES AT ONE TIME. PLEASE CONSIDER CAREFULLY IF YOU DECIDE TO CLEAR THE MEMORY AS THIS OPERATION CANNOT BE REVERSED.
SETUP MODE P3.0 View Slope & Offset 1. Press MODE to select probe type as pH. 2. Press SET for 2 seconds to enter setup. 3. Press ▲ until the icon “ELE” appears in the middle display and P3.0 appears in the lower display. 4. Press MN/MX/AV to enter P3.1, the LCD displays one of four available slope values; P3.1, P3.2, P3.3, P3.4. If the value is less than 75% or more than 115%, change the probe immediately. 5. Press MN/MX/AV to enter P3.2, P3.3, and P3.4. Note...
SETUP MODE 6. Press MN/MX/AV to enter P3.5 and view the offset value. The offset value is the mV value of pH 7 and the default offset value is 0.0. The offset value will be different after calibration. If the value is outside the range of ± 60 mV, replace the probe. P4.0 pH Calibration Buffer This meter allows the selection of two different types of pH buffers: NIST or CUSTOM. Selection of the proper buffer type more accurately calibrates the probe to specific requirements.
SETUP MODE 3. Press MN/MX/AV to enter P4.1. The default “NIS” (NIST) will flash on the LCD and P4.1 will appear on the lower portion of the display. If you use NIST buffers, press MN/MX/AV to confirm and the meter returns to P4.0. 4. If your requirement is not for NIST buffers, press ▲ to change the status to CUSTOM buffer. 5. Press MN/MX/AV to confirm and the meter will return to P4.0. P5.0 Ready Icon This feature enables/disables the “READY” icon, which indicates that the measured reading is stable. 1.
SETUP MODE 3. Press MN/MX/AV to enter P5.1. “YES” will flash on the LCD display and P5.1 will appear on the lower display. 4. Press ▲ to switch between YES or NO. 5. Press MN/MX/AV to confirm. 6. Press ESC to return to Normal Mode. P6.0 Temperature Units To select either Celsius or Fahrenheit temperature scale: 1. Press SET for 2 seconds to enter setup. 2. Press ▲ to select “U” on the upper display. P6.0 is displayed in the lower portion of display. 3. Press MN/MX/AV to enter P6.1.
SETUP MODE 5. Press MN/MX/AV to save the selection. 6. Press ESC to return to Normal Mode. P7.0 Real Time Clock Setting This procedure adjusts the meter’s internal clock. An internal battery powers the real time clock independent of the power source running the meter. 1. Press SET for 2 seconds to enter setup. 2. Press ▲ to select “RTC” on the LCD display. P7.0 appears on the bottom of the display. 3. Press MN/MX/AV to enter P7.1. The year flashes in the lower right corner of the LCD display.
SETUP MODE 6. Press ESC to return to P7.0 and Normal Mode. P8.0 Reset This procedure will reset the meter to factory default settings. Memory locations are not reset after this procedure. 1. Press SET for 2 seconds to enter setup. 2. Press ▲ to select the reset section of the meter. 3. “rSt” will appear on the LCD and P8.0 will appear directly below. 4. Press MN/MX/AV to enter P8.1. 5. Press ▲ to switch between “YES” or “NO.” 6. Press MN/MX/AV to confirm. 7. Press ESC to return to Normal Mode.
PH PROBE CALIBRATION Calibrate routinely before use, if the readings seem erratic, and whenever the batteries are replaced. For the highest accuracy, we recommend a two point calibration. If only calibrating at a single point, make certain that the buffer value is close to the sample that will be measured and the buffer temperature remains stable. 1. Press POWER to turn the meter on and press MODE to select “pH” mode. “pH” appears on the LCD. 2.
PH PROBE CALIBRATION 8. When the measured pH value is stable and the Ready function is enabled (Refer to P5.0 READY ICON page 15). “READY” will appear on the left side of the LCD. Note... If the pH value continues to display different values, check the buffer or probe. (Refer to TROUBLESHOOTING page 32). 9. NIST buffer: Skip to step 10. CUSTOM buffer: Follow instructions for your selected buffer solution: pH 4 Press HLD/REC. 4.50 appears on the secondary display. Use ▲ or ▼ to adjust to 4.00.
MEASUREMENT PROCEDURES 1. The meter is powered by 4 AAA batteries. Install batteries or connect an AC adapter to the power jack on the side of the meter. 2. Connect a sensor probe to the BNC connector on top of the meter. 3. For the pH probe with temperature sensor, also connect the plug into the jack to the right of the BNC connector. BNC Temp. Sensor 4. Connect the USB cable to the meter and computer to upload measurements for computer analysis.
MEASUREMENT PROCEDURES plugged into the meter. For manual temperature compensation, the default setting is 25°C. It is also possible to manually adjust the temperature to match your working conditions, as measured by a separate thermometer. To take measurements: 1. Remove the pH probe soaker bottle by rotating the bottle and cap and slide the bottle and cap off the probe. Rinse the probe tip with de-ionized or distilled water before use.
MEASUREMENT PROCEDURES 1. Follow Step 1 in the pH Measurement section to clean and soak the probe. 2. Press POWER to turn on. Press MODE to select mV mode. 3. Follow Steps 3-5 in the pH Measurement section to obtain a reading. 4. To switch between mV and pH, press MODE. ORP (mV) Measurement (± 1999mV) ORP (Oxidation Reduction Potential) measurement range is -1999 mV to +1999 mV. Use an ORP probe for measurement: 1. Follow Step 1 in the pH Measurement section to clean and soak the probe. 2.
MEASUREMENT PROCEDURES Note... There is no need to take temperature compensation into consideration when using an ORP probe to measure. Temperature Compensation Automatic with pH probe (ATC): Plug the temperature sensor connector into the jack on top of the meter next to the larger BNC connector. Manual with pH probe (MTC): 1. To set the temperature, press MN/MX/AV for more than 2 seconds, “CA” will flash on the LCD Display. 2.
MEASUREMENT PROCEDURES Record Memory The meter can store up to 99 records each of pH, mV, and ORP (mV) readings. 1. In any measurement or Hold Mode, press MEM to save the data. 2. The memory number and measured value will flash and then return to Normal Mode. Note… Further data can not be saved once the memory is full. See Clear Memory on page 11 to create additional space. Recall Memory This function recalls readings stored in the memory. 1. Press REC for more than 2 seconds to enter Recall Mode.
MEASUREMENT PROCEDURES Recall Maximum & Minimum This function reviews a maximum and minimum value for all the data points stored in memory. 1. Press REC for 2 seconds to enter Recall Mode. “REC” will flash on the LCD. 2. Press MN/MX/AV to view the minimum value of the memory. Press MN/MX/AV again to view the maximum value. 3. To exit memory recall, press REC for more than 2 conds. se- Backlight 1. Press any button to activate the backlight function.
MAINTENANCE pH Probe It is important to keep the pH probe wet when the meter is not in use. The probe is well protected by a plastic bottle containing solution. To use or store the probe: 1. Rotate the bottle to remove from the probe. Pull down the cover and remove it from the probe. 2. After use, put cover back on the probe and plug the probe into the bottle. Rotate the bottle to fit into the cover tightly.
MAINTENANCE The following actions will keep the probe in good working condition. Always keep the pH glass bulb wet by using the plastic bottle to protect and store the probe. You can also store in a KCl solution. Never use distilled or de-ionized water for storage. Always rinse pH probe in de-ionized water before using. Never touch or rub the glass bulb tip. This probe is designed with a fiber junction.
MAINTENANCE To expose the new unused fiber portion: 1. Use tweezers to pull out the fiber junction and expose the new unused portion. 2. Cut the clogged fiber and expose the new portion. ORP Probe Before using, remove the soaking bottle (see pH Probe section), soak the probe in distilled water, and rinse. Gently dry the sensing element. Probe Testing 1. Connect the ORP probe to the meter via the BNC connector.
MAINTENANCE 2. Put the probe in a buffer solution of pH 7.00 with urated quinhydrone. sat- 3. Stir; mV reading (E1) should be 86 ±15mV. 4. Rinse the probe with distilled water between each use. Keep the ORP probe wet. If not in use for long periods, it should be rinsed and stored in the soaker bottle filled with the saturated KCL solution. ORP Probe Cleaning A contaminated sensing element can result in a slow response and/or inaccurate reading.
MAINTENANCE When measuring solutions with a low concentration of oxidation reduction matter and slow ion exchange rate, a slow response time and inaccurate readings may occur. Under these conditions, it may take 8-24 hours to obtain an accurate reading.
TROUBLESHOOTING Meter does not turn on: 1. Press POWER for more than 2 seconds. 2. Check connections of the power adapter or batteries. Unstable readings: 1. Stir the solution to make a uniform sample and make sure the sensor is completely immersed in the solution. The measurement must be done while probe is in the container/solution. 2. Move to new location for measurement, RF emissions from unknown source may disrupt readings. Readings not changing: 1. Check to see if meter is in “HOLD” mode. 2.
ERROR CODES E02 Reading is under the lower limit E03 Reading is over the upper limit E04 Preceded by another error E12 Factory calibration data error; Reset meter (see page 18).
PC CONNECTION The meter can interface with a personal computer to capture on-line or stored data. Connection procedures: 1. Plug the USB cable into the cable jack on the side of the meter. 2. Plug D-sub 9 pin type connector into a computer Serial COM port. COM ports 1-8 can be used. 3. Insert CD-Rom in computer and follow the procedure in the operation manual located on the CD. Protocol information USB protocol settings: 9600 bps, 8 data bits, no parity. (Transmits ASCII code every second.
PC CONNECTION Voltage reading in mV, the third value is Temperature of pH probe in C/F, and “x” is a numerical value. Format in Memory Transmit pH Mode Normal Data: Pxx.xxpH: Txxx.xC(F)#xx@2007-04-18 18:48:48LRCCRLF Errors: ExxNul: ExxNul: #xx @2007-04-18 18:48:48LRCCRLF Description: $pH: Temp LRCCRLF Protocol information Format in Memory Transmit mV mode Normal Data: Mxx.xxmV: Txxx.
APPENDIX TEMPERATURE EFFECT ON NIST pH BUFFERS 35
OPTIONAL ACCESSORIES 840016 pH Probe (non-ATC) 840027 AC Adapter 840049 Spear Tip pH Probe (non-ATC) 840052 Data Acquisition Software 840054 USB Cable 840089 Rubber Holster 840090 Water Resistant Instrument Pouch 840092 Bench-Top Tripod 840093 Field Tripod 850059P Replacement ATC pH Probe 850088 ORP Probe 860008 pH4, 3 bottles, 40mL each 860009 pH7, 3 bottles, 40mL each 860010 pH10, 3 bottles, 40mL each 860011 De-ionized Water, 3 bottles, 40mL each 36
SPECIFICATIONS Unit of Range Resolution Accuracy pH 0 ~ 14 0.01 ± 0.02 pH mV -499 ~ 499 ± 0.1 mV (-199.9 ~ 199.9) otherwise ± 1mV ± 0.2 mV -199.9 ~ 199.9 otherwise ± 2 mV -199.9 ~199.9 ± 0.1 mV (-199.9 ~ 199.9) otherwise ± 1mV ± 0.2 mV -199.9 ~ 199.9 otherwise ± 2 mV ORP Temperature ºF 23 ~ 176ºF 0.1º ± 2 ºF Temperature ºC -5 ~ 80ºC 0.
SPECIFICATIONS Program Preference Default Displayed P1.0 Memory (Transmitting) No default “tr” P1.1 Memory Sent by USB No default “out” P2.0 Memory Clear “no” “CLr” P2.1 CLR Confirm “no” “no” / “yes” P3.0 Electrode P3.1-3.4 Slope 100.0% Slope value P3.5 Offset 0.0mV Offset value P4.0 Buffer Solution P4.1 Select Buffer P6.0 Ready Function P6.1 Enable or Disable P7.0 Temp Unit P7.1 Select C or F P8.0 Real Time Clock “rtc” P8.1-8.6 Setting YMD, HMS “rtc” P9.
WARRANTY Sper Scientific warrants this product against defects in materials and workmanship for a period of five (5) years from the date of purchase, and agrees to repair or replace any defective unit without charge. If your model has since been discontinued, an equivalent Sper Scientific product will be substituted if available. This warranty does not cover probes, batteries, battery leakage, or damage resulting from accident, tampering, misuse, or abuse of the product.
Advanced pH/ORP Meter 850055 Copyright ©2009 by Sper Scientific ALL RIGHTS RESERVED Printed in the USA The contents of this manual may not be reproduced or transmitted in any form or by any means electronic, mechanical, or other means that do not yet exist or may be developed, including photocopying, recording, or any information storage and retrieval system without the express permission from Sper Scientific. 7720 E. Redfield Rd.
