EUTECH INSTRUMENTS PC 510 (01) PDF Document

The keypad of the EUTECH INSTRUMENTS PC 510 has several keys with specific functions for operation, setup, and calibration.

Properly connecting the electrodes and power source is essential for the operation of your EUTECH INSTRUMENTS PC 510 meter.

To connect the pH electrode:

1. Slide the BNC connector of the probe over the BNC connector socket on the meter. Ensure the slots of the connector are in line with the posts of the socket.

2. Rotate and push the connector clockwise until it locks.

3. To remove the electrode, push and rotate the connector counter-clockwise. While holding the metal part of the connector, pull it away from the meter.

NOTE: Keep the connector dry and clean. Do not touch the connector with soiled hands. Do not pull on the probe cord as the wires might disconnect.

To connect the conductivity/temperature probe:

1. Line up the notch and 6-pins on the probe connector with the holes in the connector located on the top of the meter.

2. Push down and screw the metal sleeve to lock the probe connector into place.

3. To remove the probe, unscrew the metal sleeve and slide up the probe connector. While holding onto the metal sleeve, pull the probe away from the meter.

NOTE: Keep the connector dry and clean. Do not touch the connector with soiled hands. Do not pull on the probe cord as the wires might disconnect.

Connecting the A.C. Adapter:

1. Before plugging in the adapter, switch off the meter and the power source as a safety precaution.

2. Ensure the A.C. adapter has the correct settings: Output voltage of 9 V D.C. and current of 500 mA. Also, ensure the input mains voltage (110/220/240 V) matches your adapter requirements.

3. Insert the D.C. jack into the socket at the rear panel of the meter.

4. Switch on the power to the adapter, followed by the meter.

The integral electrode holder can be mounted on either the right or left side of the EUTECH INSTRUMENTS PC 510 meter.

To position the electrode arm:

1. Use a Philips screwdriver to remove the screw holding the electrode holder.

2. Slide the side metal bar until the second screw slot lines up with the original screw hole.

3. Use the screw removed earlier to secure the electrode holder into position.

4. The side metal bar is reversible. If desired, you can remove the screw, slide the base out of the brackets, slide it into the brackets on the opposite side, and tighten the screw.

To install the electrode arm to the meter:

1. To mount the electrode arm onto the metal rod on the side bar, align the slot with the metal rod and the base of the electrode arm.

2. Push it downwards until it fully sits in position. Avoid using excessive force.

NOTE: Move the base of the electrode holder if you wish to swing the holder. To prevent the meter from toppling over, DO NOT swing the body of the electrode holder.

When you calibrate your EUTECH INSTRUMENTS PC 510, old calibration points are replaced differently for pH and conductivity/TDS.

• pH: Calibration is replaced on a “point by point” basis. If you previously calibrated at pH 4.01, 7.00, and 10.01, and you recalibrate only at pH 7.00, the meter retains the old data for pH 4.01 and 10.01.

• Conductivity/TDS: Calibration is replaced on a “range by range” basis. If you previously calibrated at 1413 µS (in the 0 to 1999 µS range) and you recalibrate at 1500 µS (also in that range), the meter will replace the old data for that specific range. It will retain calibration data in other ranges.

Before starting, ensure you are in the correct measurement mode. Do not re-use calibration solutions as contaminants can affect accuracy.

To view current calibration points:

• pH: Go to Program P1.0 in the SETUP section.

• Conductivity & TDS: Go to Program P5.0 in the SETUP section.

To completely recalibrate or when using a replacement probe, it is best to reset the meter to factory defaults:

• pH: Go to Program P4.0 in the SETUP section.

• Conductivity & TDS: Go to Program P9.0 in the SETUP section.

NOTE: Resetting the meter will set it to factory defaults. Conductivity and pH must be reset separately.

The EUTECH INSTRUMENTS PC 510 supports up to 5-point pH calibration. A 2-point calibration is recommended for most applications.

Before starting:

1. Ensure you have selected the correct buffer standard (USA or NIST) in the Setup menu (Program P3.3).

2. Remove the protective electrode storage bottle. If the electrode was stored dry, hydrate it in tap water for 10 minutes.

3. Wash the probe in de-ionized water after use and store it in an electrode storage solution or pH 4.01/7.00 buffer. DO NOT store it in distilled or de-ionized water.

To calibrate pH:

1. If necessary, press the MODE key to select pH mode.

2. Rinse the probe thoroughly with de-ionized water. Do not wipe the probe.

3. Dip the probe into the standard calibration buffer, ensuring the end is completely immersed. For temperature-compensated readings, the conductivity cell must also be in the buffer. Stir gently.

4. Press CAL/MEAS to enter pH calibration mode. The CAL indicator will appear. The primary display shows the measured reading, and the secondary display shows the standard buffer value.

5. Wait for the reading to stabilize. The READY indicator will appear if activated in Setup.

6. Press ENTER to confirm the calibration. The meter is now calibrated to that buffer, and the lower display will scroll through the remaining buffer options.

7. For multi-point calibration, rinse the electrode and place it in the next pH buffer. Repeat steps 5-6.

8. When calibration is complete, press CAL/MEAS to return to measurement mode.

NOTE: If the buffer value is not within ±1.0 pH of the measured value, the electrode and buffer icons will blink, and the ERR annunciator will appear. To exit calibration without confirming a point, press CAL/MEAS instead of ENTER.

The EUTECH INSTRUMENTS PC 510 has 5 measuring ranges, and you can calibrate one point in each range. New calibration data will override existing data for the specific range you are calibrating.

Recommended Calibration Frequencies:

• Calibrate at least once a week for ranges near or greater than 20 mS or lower than 100 µS.

• Calibrate at least once a month for mid-ranges if the probe is washed and stored dry.

• Calibrate at least once a week if taking measurements at extreme temperatures.

To calibrate for conductivity:

1. If necessary, press the MODE key to select conductivity mode.

2. Rinse the probe with de-ionized water, then with a small amount of the calibration standard.

3. Dip the probe into the calibration standard, ensuring the tip is immersed beyond the upper steel band. Stir gently.

4. Wait for the reading to stabilize. The READY indicator will light up if activated.

5. Press CAL/MEAS to enter calibration mode. The CAL indicator will appear.

6. Press the ▲ or ▼ key to adjust the value on the primary display to match the value of your calibration standard.

7. Press ENTER to confirm the calibration. The meter returns to measurement mode.

8. Repeat steps 1-7 for other measuring ranges if needed.

NOTE: To exit without confirming the calibration, press CAL/MEAS instead of ENTER in step 7. This will retain the old calibration data for that range. You can offset the reading by up to ±40% from the default setting.

You can calibrate for TDS directly on your EUTECH INSTRUMENTS PC 510. For better accuracy with solutions that have a different TDS factor from the default (0.5), you can set the specific TDS factor in Program P7.4 before calibration.

To calibrate for TDS directly:

1. If necessary, press the MODE key to select TDS mode.

2. Rinse the probe with de-ionized water, then with a small amount of the calibration standard.

3. Dip the probe into the calibration standard. Immerse the probe tip beyond the upper steel band and stir gently. Allow the reading to stabilize.

4. Press CAL/MEAS to enter TDS calibration mode. The CAL indicator will appear.

5. Press the ▲ or ▼ key to change the value on the primary display to match the value of the calibration standard.

6. Press ENTER to confirm the calibration. The meter will return to measurement mode.

7. Repeat steps 1-6 for other measuring ranges if needed.

NOTE: To exit calibration without confirming, press CAL/MEAS instead of ENTER in step 6. This retains the meter’s old calibration data for that range. You can offset the TDS reading up to ±40% from the default setting.

Temperature calibration on the EUTECH INSTRUMENTS PC 510 is accessible during pH, conductivity, or TDS calibration. It is recommended only if you suspect temperature errors or have a replacement probe.

To calibrate temperature:

1. Ensure the conductivity electrode, a separate temperature probe, or a “3-in-1” electrode is attached to the 6-pin connector.

2. Switch the meter on.

3. Press CAL/MEAS to enter calibration mode (from either pH, conductivity, or TDS mode).

4. While in calibration mode, press the MODE key to enter temperature calibration. The primary display shows the last set temperature value, and the secondary display shows the current reading with zero offset.

5. Dip the ATC probe into a solution of a known temperature (e.g., a temperature bath) and allow it to stabilize.

6. Use the ▲ or ▼ key to adjust the reading on the display to match the known temperature of the solution. You can adjust in 0.1 °C or °F increments.

7. Once the correct temperature is set, press ENTER. The meter will automatically return to measurement mode.

NOTES:

• You can offset the temperature reading by up to ±5° from the default reading.

• To exit without confirming the temperature calibration, press CAL/MEAS instead of ENTER in step 7.

Follow these steps to take accurate pH measurements with your EUTECH INSTRUMENTS PC 510.

Temperature Compensation:

• Automatic Temperature Compensation (ATC): Occurs when a temperature sensing element (like the conductivity probe) is plugged in. The ATC indicator will light up on the LCD. The temperature element must be submersed in the liquid you are measuring.

• Manual Temperature Compensation (MTC): If no temperature sensor is plugged in, the meter defaults to 25 °C. To set a manual temperature, you must disconnect the temperature probe, enter pH calibration mode, press MODE to access temperature settings, adjust the value with the arrow keys, and press ENTER.

Taking Readings:

1. Rinse the pH electrode with de-ionized or distilled water. If the electrode has dehydrated, soak it for 30 minutes in electrode storage solution.

2. Press ON to switch the meter on.

3. Press the MODE key to select pH measurement mode. The MEAS annunciator will appear.

4. Dip the probe into the sample. The glass bulb of the electrode must be completely immersed. If using ATC, ensure the conductivity cell is also immersed in the solution. Stir gently.

5. Allow time for the reading to stabilize and note the reading on the display.

Using Measurement Features:

• READY Indicator: If activated in SETUP (P3.1), the READY annunciator lights up when the reading is stable.

• Auto Endpoint Feature: If activated in SETUP (P3.1), the meter will automatically “HOLD” the reading when it is stable for more than 5 seconds. The HOLD indicator will appear. Press the HOLD key to release the reading.

Here is how to take conductivity or TDS measurements with the EUTECH INSTRUMENTS PC 510 meter.

Temperature Compensation:

• Automatic (ATC): Simply plug the conductivity probe into the meter. The ATC indicator will light up. If it doesn’t, ATC may be turned off in SETUP mode (Program P7.3).

• Manual (MTC): You must first deactivate ATC in SETUP mode (Program P7.3). Then, enter calibration mode, press MODE to access temperature settings, use the arrow keys to enter the temperature of your sample, and press ENTER.

To take readings:

1. Rinse the probe with de-ionized or distilled water. Shake or air dry. For best results, rinse the probe with a small amount of your sample liquid.

2. Press ON to switch the meter on.

3. Press the MODE key to select conductivity or TDS measurement mode.

4. Dip the probe into the sample, ensuring the liquid level is above the upper steel band. Stir the probe gently.

5. Allow time for the reading to stabilize and note the value on the display.

Using Measurement Features:

• READY Indicator: If activated in SETUP (P7.1), the READY annunciator lights up when the reading is stable.

• Auto Endpoint Feature: If activated in SETUP (P7.1), the meter will automatically “HOLD” the reading when it is stable for more than 5 seconds. The HOLD indicator will appear. Press the HOLD key to release it.

• Auto-Ranging: The meter automatically selects the most appropriate measurement range.

• Manual-Ranging: Press the RANGE key while in measurement mode to lock onto a specific range. The “MEAS” indicator will blink. Press RANGE again to cycle through ranges. To return to Auto-ranging, press RANGE repeatedly until the “MEAS” indicator stops blinking.

The HOLD function on the EUTECH INSTRUMENTS PC 510 allows you to freeze the display for delayed observation.

1. To hold a measurement, press the HOLD key while in measurement mode. “HOLD” will appear on the display, and the reading will be frozen.

2. To release the held value and continue taking measurements, press the HOLD key again.

Note on Auto Endpoint Feature: If your meter has the auto endpoint feature switched on (in SETUP Programs P3.1 for pH or P7.1 for conductivity/TDS), the display will automatically “HOLD” when a reading is stable for more than 5 seconds. The “HOLD” indicator will appear. To release this automatic hold, press the HOLD key.

The advanced setup mode on the EUTECH INSTRUMENTS PC 510 lets you customize meter preferences and view data. The available subgroups depend on whether you are in pH or Conductivity/TDS measurement mode when you enter setup.

To access and navigate Setup Mode:

1. In either pH or Conductivity measurement mode, press the SETUP key to enter Setup mode.

2. Press the ▲ or ▼ key to scroll through the main sub-groups (e.g., P1.0, P2.0, P3.0 for pH).

3. Press the ENTER key to enter a particular sub-group or parameter.

Setup Sub-groups for pH:

• P1.0: View calibration data (CAL)

• P2.0: View electrode data (ELE)

• P3.0: Unit Configuration (COF)

• P4.0: Reset to factory default settings (rSt)

Setup Sub-groups for Conductivity & TDS:

• P5.0: View calibration data (CAL)

• P6.0: View electrode data (ELE)

• P7.0: Unit Configuration (COF)

• P8.0: Temperature (tPr)

• P9.0: Reset to factory default settings (rSt)

The EUTECH INSTRUMENTS PC 510 allows you to view past pH calibration data and check electrode diagnostics in “view-only” modes.

P1.0: Viewing Previous pH Calibration Data

1. From pH measurement mode, press the SETUP key.

2. Use the ▲ or ▼ key to scroll to parameter P1.0.

3. Press the ENTER key repeatedly to view the calibration data for each point (P1.1 through P1.5). If there is no data for a point, the display will show “—-“.

4. After scrolling through all points, you will return to the sub-group menu. Press CAL/MEAS to return to measurement mode.

P2.0: Viewing pH Electrode Data

1. From pH measurement mode, press the SETUP key.

2. Use the ▲ or ▼ key to scroll to parameter P2.0.

3. Press ENTER to select parameter 2.1. The display shows the electrode offset in mV (the mV offset at pH 7.00).

4. Press ENTER again to proceed to P2.2. The display shows the electrode slope as a percentage. The default setting is 100.0%.

5. At any point, press CAL/MEAS to return to measurement mode.

You can customize pH measurement settings in the P3.0 sub-group of the setup menu on your EUTECH INSTRUMENTS PC 510.

1. From pH measurement mode, press SETUP.

2. Use the arrow keys to select P3.0 and press ENTER.

P3.1: READY Indicator and Auto Endpoint Function

1. After entering P3.0, press ENTER to access P3.1.

2. Use the ▲ or ▼ key to select your preference:

– OFF: Switches the READY indicator off.

– ON: Switches the READY indicator on.

– ON and HOLD: Switches the auto endpoint feature on.

3. Press ENTER to confirm.

P3.2: Selecting Number of pH Calibration Points

1. After P3.1, the meter moves to P3.2. Press ENTER to access it if needed.

2. Use the ▲ or ▼ key to select 2, 3, 4, or 5 point pH calibration.

3. Press ENTER to confirm.

P3.3: Selecting USA or NIST Buffer Set

1. After P3.2, the meter moves to P3.3. Press ENTER to access it if needed.

2. Use the ▲ or ▼ key to toggle between USA and NIST buffer sets.

3. Press ENTER to confirm.

P3.4: Selecting °C or °F

1. After P3.3, the meter moves to P3.4. Press ENTER to access it if needed.

2. Use the ▲ or ▼ key to toggle between °C and °F.

3. Press ENTER to confirm and return to the sub-group menu. Press CAL/MEAS to exit to measurement mode.

The EUTECH INSTRUMENTS PC 510 allows you to view past conductivity/TDS calibration data and check probe diagnostics in “view-only” modes.

P5.0: Viewing Previous Conductivity/TDS Calibration Data

1. From conductivity or TDS measurement mode, press the SETUP key.

2. Use the ▲ or ▼ key to scroll to parameter P5.0.

3. Press the ENTER key repeatedly to view the calibration data for each of the 5 measurement ranges (P5.1 through P5.5). If there is no data for a range, the display will show “—-“.

4. After scrolling through all ranges, you will return to the sub-group menu. Press CAL/MEAS to return to measurement mode.

P6.0: Viewing Conductivity Probe Data (Effective Cell Constant)

1. From conductivity or TDS measurement mode, press the SETUP key.

2. Use the ▲ or ▼ key to scroll to parameter P6.0.

3. Press the ENTER key repeatedly to view the effective cell constant for each of the 5 measurement ranges (P6.1 through P6.5). The cell constant adjusts according to your calibration.

4. After scrolling through all ranges, you will return to the sub-group menu. Press CAL/MEAS to return to measurement mode.

NOTE: Cell constants degrade with time and usage. This feature can help alert you to the need for a new probe.

You can customize conductivity and TDS measurement settings in the P7.0 sub-group of the setup menu on your EUTECH INSTRUMENTS PC 510.

1. From conductivity or TDS measurement mode, press SETUP.

2. Use the arrow keys to select P7.0 and press ENTER.

P7.1: READY Indicator and Auto Endpoint Function

1. Press ENTER to access P7.1. Use the ▲ or ▼ key to select “ON”, “OFF”, or “ON and HOLD”. Press ENTER to confirm.

P7.2: Selecting °C or °F

1. Press ENTER to access P7.2. Use the ▲ or ▼ key to toggle between °C and °F. Press ENTER to confirm.

P7.3: Selecting Automatic or Manual Temperature Compensation

1. Press ENTER to access P7.3. The upper display shows “ATC”. Press ENTER again.

2. Use the ▲ or ▼ key to select between “YES” (ATC on) and “NO” (ATC off). Press ENTER to confirm.

P7.4: Setting the TDS Factor

1. Press ENTER to access P7.4. The upper display shows “tdS”. Press ENTER again.

2. The current TDS factor is displayed. Use the ▲ or ▼ key to adjust the factor between 0.4 and 1.0 (default is 0.5).

3. Press ENTER to confirm. Press CAL/MEAS to exit to measurement mode.

You can adjust the temperature coefficient and normalization temperature for conductivity measurements in the P8.0 sub-group of the setup menu on your EUTECH INSTRUMENTS PC 510.

1. From conductivity measurement mode, press SETUP.

2. Use the arrow keys to select P8.0 and press ENTER.

P8.1: Selecting the Temperature Coefficient

1. Press ENTER to select parameter P8.1. The display shows “t.CO”.

2. Press ENTER again. The current temperature coefficient is displayed.

3. Use the ▲ or ▼ key to select the temperature coefficient for your solution, adjustable from 0.0 to 10.0% per °C (default is 2.1%).

4. Press ENTER to confirm.

P8.2: Adjusting the Normalization Temperature

1. After P8.1, the meter moves to P8.2. Press ENTER to access it if needed. The display shows “t.nr”.

2. Press ENTER again. The current normalization temperature is displayed.

3. Use the ▲ or ▼ key to adjust the temperature from 15 to 30 °C (59 to 86 °F). The default is 25 °C.

4. Press ENTER to confirm. Press CAL/MEAS to exit to measurement mode.

The EUTECH INSTRUMENTS PC 510 allows you to reset pH parameters and conductivity/TDS parameters separately. This clears all calibration data and most setup functions for that parameter.

P4.0: Resetting pH to Factory Defaults

1. From pH measurement mode, press the SETUP key.

2. Use the ▲ or ▼ key to scroll to parameter P4.0.

3. Press ENTER. The display will show “rSt” and “no”.

4. Press the ▲ or ▼ key to toggle to “YES”.

5. Press ENTER to confirm the reset. The meter will return to measurement mode. (To cancel, press CAL/MEAS instead).

P9.0: Resetting Conductivity/TDS to Factory Defaults

1. From conductivity or TDS measurement mode, press the SETUP key.

2. Use the ▲ or ▼ key to scroll to parameter P9.0.

3. Press ENTER. The display will show “rSt” and “no”.

4. Press the ▲ or ▼ key to toggle to “YES”.

5. Press ENTER to confirm the reset. The meter will return to measurement mode. (To cancel, press CAL/MEAS instead).

NOTE: The temperature unit (°C or °F) and the temperature offset calibration value will remain as you have set them after a reset.

Proper probe care is crucial for accurate readings from your EUTECH INSTRUMENTS PC 510.

pH Electrode Care

• Storage: Always keep the pH bulb hydrated. Use the protective storage bottle filled with electrode storage solution. A pH 4 buffer with 1/100 part saturated KCl can be used as an alternative for short-term storage. NEVER use distilled water for storage.

• After Measuring: Rinse the electrode and reference junction in de-ionized water. Store as recommended.

• Cleaning:

  – Salt deposits: Immerse in tap water for 10-15 minutes, then rinse with distilled water.

  – Oil/Grease film: Gently wash the bulb with detergent and water. Rinse with distilled water.

  – Clogged reference junction: Heat a diluted KCl solution to 60-80 °C. Place the sensing part of the electrode in the solution for about 10 minutes. Allow to cool in unheated KCl solution.

  – Protein deposits: Place the electrode in a 1% pepsin solution in 0.1 M HCl for 5-10 minutes. Rinse with distilled water.

• Reactivating: If the electrode response is sluggish, immerse it in a pH 4 buffer for 10-30 minutes to rehydrate the bulb. Never touch or rub the glass bulb.

Conductivity Electrode Care

• Keep the probe clean. Rinse twice and swirl gently while taking readings.

• For best accuracy, soak a dry probe for 5-10 minutes before calibration.

• Rinse with de-ionized or tap water before storing. Never scratch the bands with a hard substance.

• Do not immerse the probe in oily solutions. Clean by stirring in a mild detergent bath or isopropyl alcohol, wipe with a soft tissue, and rinse thoroughly.

• Re-calibrate the meter after cleaning the probe.

• To remove the probe guard for cleaning: Grip the yellow probe guard and twist it clockwise. The locking notch will release, allowing you to slide the guard off the end of the probe.

Here is a troubleshooting guide for common issues with the EUTECH INSTRUMENTS PC 510.

If an error persists, or the meter shows incorrect values, return the meter.