Hanna Instruments HI6421P User manual

Hanna Instruments Inc., 584 Park East Drive, Woonsocket, RI 02895 USA www.hannainst.com
Package contents
• HI6421P
• HI764833 polarographic DO probe
• Membrane cap and O-ring (2 pcs.)
• Electrolyte solution, 30 mL (1 pc.)
• Electrode arm with base plate and screws (mounting)
• 24 VDC power adapter and USB-C to USB-A cable
• Probe quality certificate, instrument quality certificate,
quick reference guide
HI6421P Advanced Dissolved Oxygen Benchtop Meter
Quick Reference Guide
Dear Customer, thank you for choosing Hanna Instruments.
Getting started
Identify the base plate (1) – to be attached to the Lor the Rside –
and mounting screw (2) and proceed as illustrated here.
RL
21
With the arm holder (3) in position and the pH electrode (4) and
temperature probe (5) plugged in, connect the power cable (6) and
plug into the mains. Press the ON/OFF button (7) to start.
Remove the transparent film that protects the capacitive touchscreen
prior to operating the meter.
HHII642211
Dissolved Oxygen
DO
Ethernet
Extension
USB-A
USB-C
ON/OFF
Power
24Vdc
56 4
3
Operating language & Access to support
• At first power on default operating language is English. Browse
the language window and select operating language from list
of supported options.
• To access support, tap and select .
On first access the benchtop’s name is used as default user name
and no password is required.
Device handling & Safety precautions
• Transport the unit with all cables removed
• Do not puncture the capacitive touchscreen
• Do not insert objects into the ports, spaces around keys other
than the intended cable, USB drive
Hanna®is committed to developing and deploying digital
solutions with a positive impact on the environment and climate.
Please scan the QR code or follow the link
to download the user manual.
https://manuals.hannainst.com/HI6421

Hanna Instruments Inc., 584 Park East Drive, Woonsocket, RI 02895 USA www.hannainst.com
Capacitive touchscreen
Users Settings Log Recall Help
Channel
Settings
Back key Home key Menu key
• return to a previous hierarchical menu level
• access to measurement screen
• access to:
`Users login & rights configuration
`Settings system configuration, connectivity & printing items
`Log Recall logged measurement data
`Help support
• from measurement screen, tap to access measurement menu
Probe usage guidelines & Calibration tips
Accessories: membrane cap and O-ring, electrolyte solution, zero
oxygen solution, calibration beakers
• Unscrew the shipping cap and save for calibration.
• Take one O-ring and one membrane cap and position the O-ring
(1) in the cap (2).
1
2
• Rinse the membrane cap with electrolyte and discard.
• Fill the cap, above the O-ring, with electrolyte and tap the side
walls to dislodge bubbles that may adhere to the threads.
• Over a sink, with the catode facing down, screw the cap counter
clockwise until the threads are fully engaged.
• Rinse the probe and inspect the membrane for trapped bubbles.
If any, discard the electrolyte, refill, and tap the sides. Reinstall.
Calibration tips
• Ensure the probe is correctly plugged in and turn on the meter.
• Allow 15 minutes for probe polarization conditioning.
• 100% saturation calibration: pour some water into supplied
cap and screw the cap onto the probe, kept in vertical position.
Allow 15 minutes for air to become water saturated.
• 0% saturation calibration: pour HI7040 zero oxygen solution
into a beaker and gently stir for 2-3 minutes. Gently tap the
probe to dislodge any air bubbles.
• Wait for stable reading to calibrate.
Measurement tips
• Work with recently calibrated probes.
• Place probe in sample and allow 1 minute for reading to stabilize.
• For accurate measurements the membrane needs constant
oxygen replenishment. Ensure adequate water movement either
manually or by use of a stirrer.
Logging in & Creating a new account
1. Power the meter and tap .
2. Tap followed by .
3. Tap Edit Users to enter Account Management.
4. Tap to enable Account Creation and Logins. Tap to return.
5. Tap Logout to enter Users screen. Tap the plus symbol avatar.
08:37:41 31/08/2022
Users
Admin
HI6421 +
6. Input user name and tap .
7. Enter password and tap . Re-enter password to confirm.
All Hanna instruments conform to the CE European Directives and UK Standards, and our production facilities are ISO 9001 certified. HI6421P is warranted for a period
of two years and the probe for six months against defects in workmanship and materials when used for their intended purpose and maintained according to instructions.
For technical information e-mail us at [email protected]. Visit www.hannainst.com for more information about Hanna Instruments and our products.
Please retain for future use. QR6421P 12/22