4-Star pH/dissolved oxygen (DO) measuring instrument

410D-01/420D-01


·Automatic or manual pH calibration from 1:00 to 5:00
·Automatically identify NIST/US and DIN buffer solutions
-- NIST / US：1.68，4.01，7.00，10.01，12.46
-- DIN：1.68，4.01，6.86，9.18
·ORP (oxidation-reduction potential) can be automatically or manually calibrated to measure the oxidation-reduction potential of a sample relative to a standard hydrogen electrode. The membrane electrode method for measuring DO/BOD is a standard method used by the US EPA organization and Chinese national standards, providing more authoritative data
·Equipped with automatic salinity compensation and pressure compensation
·Can be used in conjunction with self stirring BOD electrodes for more convenient operation
·Four calibration methods meet various applications (water saturated with air, water saturated with air, Winkler calibration, and zero calibration)
·Built in endpoint judgment (Smart StabilityTM) and endpoint display technology (Smart Averaging TM) optimize the accuracy and response time of readings
·Both LCD and keyboard use common icons, which are clear and easy to understand
·The larger display font and backlight function make it easy to operate even in outdoor or low light conditions
·The desktop watch has a mixing interface that can be connected to a mixer, providing automatic mixing function controlled by the endpoint mode
·Desktop watches can use AC power or standard AA batteries, and the power adapter is globally compatible
·Portable instrument for field operation, with four standard AA batteries capable of continuous operation for approximately 2000 hours
·Ten password protection methods for easy multi-user operation
·Optional software can ensure the validity of measurement data meets the requirements of 21 CFR Part 11
·Desktop instruments can be used in conjunction with automatic sample changers

pH
Measurement range: -2.000-19.999
Resolution: 0.1/0.01/0.001
Relative accuracy: ± 0.001
Calibration mode: 1-5 points; US/NIST, DIN, and user-defined

Redox potential (ORP)
Measurement range: ± 1999.9 (mV/RmV/EH)
Resolution: 0.1
Relative accuracy: ± 0.1 mV or 0.05% (whichever is greater)

dissolved oxygen
Measurement range: 0.00-90mg/L
Resolution: 0.1/0.01mg/L
Measurement range: 0.0-600%
Resolution: 1/0.1%
Relative accuracy: ± 0.5% ± 1 word
Salinity coefficient: 0-45 ppt
Atmospheric pressure measurement range: 450-850 mmHg
Correction method: air saturated with water, water saturated with air, Winkler， Zero point correction
Electrode type: Polarographic

temperature
Measurement range: -5-105 ℃
Resolution: -5-99.9 ℃ is 0.1 ℃, and above 99.9 ℃ is 1.0 ℃
Relative accuracy: ± 0.1 ℃
Temperature compensation: automatic/manual

display: Large screen backlit LCD

Input/Output
Sensor interface: pH BNC; Temperature - miniDIN; Blender - Phone back (suitable for desktop watches)
Communication: Bidirectional RS232 interface, optional USB cable

Instrument function
Data record: 750 sets
Correction record: * Last 10 sets of correction data
Method storage: 10
Password protection: 10 sets
Power supply: 4xAA batteries, universal power adapter (suitable for desktop meters)
Quality and safety certifications: CE, CSA, UL, T Ü V, FCC Class A

Operating environment
Suitable operating temperature: 5-45 ℃
Relative humidity: 5-85% (without condensation)
IP rating: Desktop IP54, dustproof and splash proof; Portable P67, dustproof and waterproof

Overall dimensions
Desktop: 9.4 cm (height) x 17.0 cm (width) x 22.4 cm (length)
Portable: 4.8 cm (height) x 9.7 cm (width) x 21.3 cm (length)