Transcript
Instruction Sheet
Standard pHScan 2 Microprocessor-based, Pocket pH Tester
Standard pHScan 2 Microprocessor-based Pocket pH Tester BEFORE USE: DO NOT BE ALARMED if white crystals form around the cap. This is normal. CONDITIONING: Condition the unit before first use. Remove cap, immerse electrode in tap water for 1 hour. This activates electrode and dissolves crystals. CALIBRATION: This tester allows up to 3-point calibration. Start with pH 7 buffer. Press ON/OFF button to power on. Immerse electrode in chosen buffer about 2 cm deep and stir gently. Wait for displayed value to stabilize at or near the pH buffer chosen. Next, press the CAL button to enter calibration sequence. When display flashes continuously, press HOLD/CON button to confirm. If necessary, proceed to next buffer value (pH 4 or pH 10) and repeat the calibration procedure. You have successfully calibrated the instrument. pH TESTING: • Remove cap and press ON/OFF button on the keypad to turn on the pHScan 2 • Dip the electrode about 2 cm into the test solution • Stir once, let the display stabilize. Note the pH • Press HOLD/CON button if you wish to hold the reading. Press again to release • Press the ON/OFF button to shut off • Tester automatically shuts-off after 8.5 minutes to conserve batteries! MAINTENANCE IS EASY: Rinse the electrode in tap water after use to prolong life. In harsh samples, take readings quickly, rinse electrode immediately afterwards with deionized water to remove residues and prevent electrode contamination. To maximize electrode life, place a small piece of clean cloth or sponge in the cap, moisten with tap water (NOT DE-IONIZED WATER), and replace cap.
CHANGING BATTERIES: Flip up the battery compartment lid (see picture). Remove old batteries and replace with fresh ones noting polarity as shown in battery compartment. Re-calibrate after battery change. USEFUL NOTE: • To avoid cross contamination, rinse between samples and buffer with de-ionized water. DO NOT immer se the electrode above coloured band! • Calibration should be done regularly or daily to ensure good tester accuracy. ERROR MESSAGES: E1 - Weak batteries. Need replacement. E2 - Wrong or bad buffer value (out of range) or the electrode is failing. OR Over range signal or electrode is not in contact with sample solution. WARRANTY: The tester is warranted to be free from manufacturing defects for 2 years and electrode module for 6 months. Please return to your distributor for repair. pHSCAN 2 TESTER Battery Compartment
Large LCD
Battery Compartment Holes For Lanyard
HOLD/CON CAL
Pocket Clip
ON/OFF Keypad
Coloured Band
Maximum Immersion Level
Protective Cap
pH Measuring Electrode
68X247702 3/01 Rev 2
Flip-up Battery Compartment
Pocket Clip With Holes To Attach A Lanyard
Clog Resistant Reference Junction
Serviceability
S P E C I F I C A T I O N S Model pHScan 1, 2, 3 pH Range -1.0 to 15.0 ; -1.00 to 15.00 pH Resolution pHScan 1, 2 : 0.1 pH pHScan 3 : 0.01 pH Accuracy pHScan1 : ± 0.2 pH pHScan2 : ± 0.1 pH pHScan3 : ± 0.05 pH ATC Yes (Except pHScan 1) Calibration pHScan1 : 1-point (4, 7 or 10) pHScan2, 3 : 3-point (4, 7 & 10) Auto-buffer Yes (pH 4, 7 & 10) Recognition Auto Power- Yes Off/Hold Battery Life 3 or 4 x 1.4V (Type: A 76, LR44, V13GA) ; >60 hours Dimension/ Tester : 15 x 4 x 2.5 cm ; 80g Weight Boxed : 18.5 x 7 x 5 cm ; 165g
Manufactured By:
Eutech Instruments Pte Ltd Blk 55, Ayer Rajah Crescent, #04-16/24, Singapore 139949 Tel: (65)6778 6876 Fax: (65)6773 0836 E-Mail:
[email protected] Web-Site: http://www.eutechinst.com
Made in Singapore 68X247801 9/00 Rev 1
