Xylem YSI Pro1020 User manual

Pro1020
Quick Start Guide
Item #605188
This Quick Start Guide is meant to serve as a quick reference in calibrating and
operating the Pro1020. It is not intended to replace the information found in the User
Manual.
Getting Started
Unpack the instrument and install (2) C size batteries in the back of the instrument.
Tighten the four screws of the battery plate on to the back of the instrument.
Installing the DO Sensor
Prior to use, install the sensors into the cable assembly. Remove the temporary plastic
plugs from the cable’s ports by pulling them straight out of the port. Remove the plastic
plug from the sensor’s connector by pulling it straight off the sensor. Install the sensor
by inserting the sensor into the port and then hand tightening it. Do not use a tool and
do not over tighten. Install a pH, pH-amplified or ORP sensor in port 1 and a DO sensor
in port 2. Install a port plug into any port that does not have an installed sensor.
Enable the correct ISE (either pH or ORP) and Dissolved Oxygen (either galvanic - gray
sensor body or polarographic - black sensor body) sensor in the instrument’s System
Setup menu. Attach the cable assembly to your instrument.
Installing the DO Membrane
The DO sensor is shipped with a red protective cap to protect the electrode. A new
membrane cap must be installed before the first use.
1. Prepare the O2 probe solution according to the instructions on the bottle. After
mixing, allow the solution to sit for 1 hour. This will help prevent air bubbles
from later developing under the membrane.
2. Remove, and discard or save the red protective cap.
3. Thoroughly rinse the sensor tip with distilled or deionized water.
4. Fill a new membrane cap with probe solution. Avoid touching the membrane
portion of the cap.
5. Thread the membrane cap onto the sensor, moderately tight. A small amount of
electrolyte will overflow.

pH Calibration
The Pro1020 pH sensor can be calibrated by performing a 1, 2 or 3-point calibration. At
least one of the calibration points must be done with pH buffer 7 or 6.86. For highest
accuracy, perform at least a 2-point calibration.
2 or 3-Point Calibration
1. Place the sensor in pH buffer 7 or 6.86 and allow the temperature and pH
readings to stabilize.
2. Press and hold Cal for three seconds.
3. Highlight pH and press Enter. If pH is not listed as an option, check the System
Setup menu to ensure pH is enabled in the ISE Sensor Type menu.
4. Highlight 2 point or 3 point and press enter.
5. If necessary, use the up and down arrow keys to adjust the pH buffer value.
6. Press Enter to continue to second point.
7. Rinse the sensor and place it in the second pH buffer (4/4.01 or 10/9.18). If
necessary, use the up and down arrow keys to adjust the pH buffer value.
8. Wait approximately 30 to 60 seconds for the pH sensor to stabilize and for the
temperature reading to stabilize.
9. Press Enter to either complete the 2-point calibration or to continue with the 3rd
calibration point. Or, press Cal to cancel.
10. If continuing on with a 3rd calibration point, rinse the sensor and place it in the
third pH buffer (4/4.01 or 10/9.18). If necessary, use the up and down arrow keys
to adjust the pH buffer value.
11. Wait approximately 30 to 60 seconds for the pH sensor to stabilize and for the
temperature reading to stabilize.
12. Press Enter to complete the 3-point calibration. Or, press Cal to cancel.
13. ‘Calibration Successful’ will display for a few seconds to indicate a successful
calibration and then the instrument will return to the Run screen.
14. If the calibration is unsuccessful, an error message will display on the screen.
Press the Cal key to exit the calibration error message and return to the Run
screen.
ORP Calibration
1. Place the clean sensor in ORP calibration solution. Wait for the ORP and
temperature readings to stabilize.
2. Press and hold Cal for three seconds.
3. Highlight ORP and press Enter. If ORP is not listed as an option, check the
System Setup menu to ensure ORP is enabled in the ISE Sensor Type menu.
4. Use the up and down arrow keys to adjust the ORP calibration solution value.

DO Calibration
The Pro1020 can be calibrated in % saturation, mg/L or ppm. Calibration of any option
(%, mg/L, or ppm) will automatically calibrate the others. The Pro1020 can be calibrated
with the press of a few keys when Quick DO Cal is enabled in the System Setup menu.
The following procedure outlines the % saturation calibration option with and without
Quick DO Cal enabled.
1. Moisten the sponge in the cal/transport sleeve with a small amount of water and
install it on the probe. Make sure the DO and temperature sensors are not
immersed in the water.
2. Turn the instrument on. If using a polarographic sensor, wait 10 minutes for the
DO sensor to stabilize. Galvanic sensors do not require a warm up time.
3. Ensure the barometer reading along the bottom of the display is accurate.
4. Press and hold the Cal key for three seconds.
5. If Quick DO Cal is enabled, highlight Dissolved Oxygen and press Enter. The
instrument will then indicate Calibrating %DO on the display and automatically
calibrate the sensor to the barometer reading.
Barometer Calibration
The barometer reading must be accurate to ensure accurate DO % calibrations and DO
readings. If the instrument’s barometer requires an adjustment, determine your local
barometric pressure (BP) from a barometer, an independent laboratory or from a local
weather service. If the BP reading has been corrected to sea level, use the following
equation to determine the true BP in mmHg for your altitude:
True BP = (Corrected BP in mmHg) – {2.5 * (Local Altitude in feet/100)}
1. From the Run screen, use the up or down arrow keys to highlight the barometer
box then press Enter.
2. Use the up or down arrow keys to adjust the barometer reading to the local, true
barometric pressure.
3. Press Enter to confirm and save the barometer adjustment.
5. Wait for the temperature reading to stabilize, then press Enter to complete the
calibration or press Cal to cancel.
6. ‘Calibration Successful’ will display for a few seconds to indicate a successful
calibration and then the instrument will return to the Run screen.
7. If the calibration is unsuccessful, an error message will display on the screen.
Press the Cal key to exit the calibration error message and return to the Run
screen. Refer to the troubleshooting section of the manual for a possible
solution or contact YSI Technical Support.

Visit YSI.com/Pro1020 to find the
User Manual, specs, and accessories.
Item# 605057 Dwg# 605188
December 2019 Rev B
1725 Brannum Lane
Yellow Springs, OH 45387
[phone], [phone]
[email protected]
Taking Measurements
1. Before taking measurements, be sure the instrument has been calibrated to
ensure the most accurate readings.
2. Turn the instrument on and wait 5-15 minutes if using a polarographic sensor.
3. Install the sensor guard and then insert the probe into the sample.
4. Ensure the conductivity sensor is completely submerged in the sample. The two
holes near the cable should be covered by the sample for accurate conductivity
readings.
5. Move the probe in the sample at a rate of at least 6 inches (16 cm) per second if
using the yellow membrane and 3 inches (7.62 cm) per second if using the blue
membrane.
6. While continuing to provide sample movement, wait for the readings to
stabilize.
7. Highlight Save and press Enter to store the reading. The instrument will confirm
that the reading was successfully saved.
Contact Information
6. If Quick DO Cal is not enabled, highlight %or %Local and press Enter. The
Pro1020 will display the current DO% and temperature readings along with
the % calibration value. Wait at least 3 seconds, then, once the DO% and
temperature readings are stable, press Enter to complete the calibration.
7. Calibration Successful will display for a few seconds to indicate a successful
calibration and then the instrument will return to the run screen.
8. If the calibration is unsuccessful, an error message will display on the screen.
Press the Cal key to exit the error message and return to the run screen.