Related Manuals for PCE Instruments PCE-PH 25
Summary of Contents for PCE Instruments PCE-PH 25
- Page 1 Operation Manual PCE-PH 25 Microcomputer Based pH/Condctivity/TDS/ Sanility & Temperature Pocket Meter...
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Page 2: Table Of Contents
BEFORE YOUR FIRST USE ......…....2 A. Replace the Batteries ............2 B. Soak the Electrode............2 C. Setup and Calibrate the Electrode and Meter…..2 OVERVIEW PCE-PH 25 …………........3 A. Meter Description............3 B. VisionPlus Graphical Display ........3 OPERATION MODES AND KEYPAD OPERATIONS A. -
Page 3: Initial Inspection And Assembly
Soak the electrode in a pH 4 solution for 10 minutes before first use or after storage. C. Setup and Calibrate the Electrode and Meter PCE-PH 25 must be setup and calibrated before your first use. Please follow the instructions detailed in section USING pH-Meter PCE-PH... -
Page 4: Overview Pce-Ph 25
PCE-PH25 OVERVIEW A. Meter Description 1. Battery cap 2. LCD screen 3. Keypad HoId Store 4. Electrode collar Mode ScroII 5. Electrode & ATC assembly (Electrode cap is not shown.) B. Graphical Display 7.00 HOLD 10.00 125.2 F ã ¡ BUF:7/4/10 1. -
Page 5: Operation Modes And Keypad Operations
OPERATION MODES AND KEYPAD OPERATIONS A. Operation Modes The pH-meter has 6 operation modes: 1. Measure Mode. Measure Mode is used to make pH / conductivity / TDS / salinity and temperature measurements. 2. Calibration Mode. Calibration Mode is used to perform 1, 2 or 3 point pH calibration and conductivity calibration. - Page 6 Operation Duration Function Mode Selects display mode. Pressing this key changes the display sequentially to Measure 0 second display pH/Temp, Conductivity/Temp, TDS/Temp and Salinity/Temp modes. Enters pH Mode pH Measure 2 seconds Calibration mode. Conductivity Enters Conductivity 2 seconds Measure Calibration mode.
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Page 7: Using Pce-Ph 25
2. The unit will also automatically turn off after 10 minutes of no key activity. B. Temperature Unit Select Mode 1. The PCE-PH 25 meter is factory pre-set in “°C”. 2. To change to “°F”, press “Mode” key to enter the “TDS Measure Mode”. -
Page 8: Ph Calibration
C. pH Calibration a. pH Buffer sets Select 1. In the “pH Measure Mode”, press and hold the “Scroll” key for 5 seconds to enter the “pH Buffer sets Select Mode”. 2. Press “Store” key to select 7.00 (7.00/4.01/10.01) or press “Scroll”... -
Page 9: Conductivity Calibration
Here are some standard solutions the user can prepare to calibrate the probe of the model PCE-PH 25. 1. Standard solution of 1413uS at 25°C: Accurately weight out 0.746 grams of research grade dried Potassium Chloride (KCL). - Page 10 TDS FACTOR: 0.65 TEMP.COE.: 1.91% TEMP.REF.: 25¡ã c uS/cm 25.2 ¡ã c TDS FACTOR: The default factor value is 0.65. To change the TDS factor, use the “Store” and “Scroll” keys to adjust the value between 0.30 and 1.00. Press “Hold” key to save the new value and the unit will automatically go into the next calibration parameter.
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Page 11: Measure
Allow temperature to stabilize. The message “RANG” (range) may appear briefly on the display indicating auto- ranging. This is normal. After temperature stabilization, use the “Store” and “Scroll” keys to adjust the conductivity value to that of the conductivity standard at 25°C. Press “Hold” key to calibrate. -
Page 12: Recall Data
Note: The Model PCE-PH 25 is equipped with a non-volatile memory that can store up to 50 different sets of readings (pH/Conductivity/TDS/Salinity and temperature). Non-volatile memory will be retained even if power is lost. When all 50 memory locations are used up, the next set of data saved will overwrite the data stored in the first location and so on. -
Page 13: Ongoing Maintenance
ONGOING MAINTENANCE A. Replace Electrode 1. Unscrew the electrode collar to remove the electrode & ATC assembly as shown in the right figure. 2. Remove the old electrode assembly from the electrode collar. 3. Insert a new electrode assembly and make sure the electrode fit back into the meter correctly. -
Page 14: Specifications
Display Main Secondary Possible cause(s) Mode Display [Action(s)] Display pH value<0.00 pH. -5.0 to [Replace the test solution UNDR 60.0°C or recalibrate the meter.] Measure pH value>14.00 pH. -5.0 to [Replace the test solution OVER 60.0°C or recalibrate the meter.] Temperature<... - Page 15 Range Resolution Accuracy Minimum 0mg/L to 20.00g/L ±1%FS 1mg/L Salinity Range Resolution Accuracy 0.0 to 10.0ppt 0.1ppt ±1%FS Temperature Range Resolution Accuracy -5.0 to 60.0 °C 0.1 °C ±0.5 °C 23 to 140 °F 0.1 °F ±0.9 °F pH buffer recognition: pH 7.00, 4.01, 10.01 or pH 6.86, 4.00, 9.18 pH Temperature compensation: AUTO -5.0 to 60.0 °C...
- Page 16 Temperature Temperature sensor: Thermistor, 10 kΩat 25°C Temperature unit: °C or °F General Power: LR44 x 4 Automatic shut off function: 10 minutes of non-use Data logging capabilities: 50 data sets Ambient temperature range: 0.0 to 50.0 °C Relative Humidity: At 95%RH Case: IP67 water-tight case Dimensions (W x D x H): 44mm x 25mm x200mm Weight : 110 g (Batteries included)