The experimental results are displayed in terms of concentration, absorbance, or transmittance.

Automatically select the wavelength when selecting the corresponding testing program.

Data storage and retrieval of data records can be carried out in the laboratory or on-site.

The functions of reagent blank correction and standard adjustment can be utilized to compensate for the differences between batches of reagents.

During the testing process, there is an icon prompt function.

The RS232 port allows the measuring instrument to connect to an external printer or computer.

You can input user-defined measurement methods or new hash measurement methods.

Display error signals for troubleshooting program or instrument malfunctions.

Wavelength range: 420nm and 610nm
Wavelength accuracy: ± 1 nm
Wavelength selection: automatically selected based on the measurement program number
Linear photometric measurement: ± 0.002 A (0-1 A)
Repeatability of photometric measurement: ± 0.005 A (0-1 A)
Accuracy of photometric measurement: ± 0.005 A at rated 1.0 ABS
Light source lamp: Light emitting diode (LED)
Detector: Silicon photodiode
Data display: Four digit LCD with a character height of 1.5 centimeters
Reading mode:% transmittance, absorbance, concentration
External output: Use RS232 serial port to communicate with a micro printer or computer

Battery power supply: 190~240VAC 50Hz input, Suitable for 6VDC output power supply
Accessory or 4 AA alkaline batteries
Instrument size: 24.0 × 19.8 × 12.0 centimeters
Instrument weight: 2 kg
Luminous measurement range: 0-2A
Light drift: less than 1.0% at 400nm
Battery life: 6 months (usually)
Temperature range: Operating temperature: 0 to 50 ℃ (32 to 122 ° F)
Storage temperature: -20 to 60 ℃ (-4 to 140 ° F)
Humidity: 80% at 40 ℃
Environment: Designed to meet IP41 standards

Choose a high range two-hour digestion method. When the "#" graphic is displayed below the screen, it can also be used as the number key 7.

Choose a low range two-hour digestion method. When the "#" graphic is displayed below the screen, it can also be used as the number key 4.

Choose a high range 15 minute digestion method. When the "#" graphic is displayed below the screen, it can also be used as the number key 1.

Choose the low range 15 minute digestion method. When the "#" graphic is displayed below the screen, it can also be used as the number key 1. When the "#" graphic is displayed below the screen, pressing the CE key will clear the most recent operation (deleting the entire input character, not just the digits after the last digit).

Print the currently displayed data. Print the call data under the historical data menu. When the "#" graphic is displayed below the screen, it can also be used as the number key 8.

When conducting analysis, this key allows the user to store the current reading in one of the 1000 sample data storage locations. Users can store readings with serial numbers from 1 to 1000 by pressing the "OK" button. Use the "△" and "▽" keys to find the unused storage serial number or use the numeric keys to directly enter the sample serial number. When the "#" graphic is displayed below the screen, this key can also be used as the number key 5.

Start calling to store sample data (RECALL icon displayed in the upper left corner of the screen). When the "#" graphic is displayed below the screen, this key can also be used as the number key 2.

Zero the instrument using the current sample blank. When the "#" graphic is displayed below the screen, it can also be used as the numeric key 0.

Enter the settings menu (SETUP icon displayed in the upper left corner of the screen). The settings menu provides some options, such as reagent blank, standard adjustment, user input program, and instrument configuration. When the "#" graphic is displayed below the screen, it can also be used as the number key 9.

Display the current time or date. Press once to display the date, press twice to display the time. Under the "Historical Data" menu, it is used to display the date or time of the called samples stored in the instrument. When the "#" graphic is displayed below the screen, this key can also be used as the number key 6. In the SETUP menu, this key is used to set the current date or time.

Transform between displaying COD concentration, absorbance, and% transmittance. Press once to display concentration, press twice to display absorbance, and press three times to display% transmittance. Press again to return to the concentration display. When the "#" graphic is displayed below the screen, this key can also be used as the number key 3.

When the READ icon is displayed at the bottom of the screen, pressing this key will read and display the sample concentration. When the "#" graphic is displayed below the screen, this key can also be used as a numeric key; Press once to display decimal numbers, and press twice or more to switch between positive and negative signs.

When the 'back' icon is displayed below the screen, press the 'back' button to cancel the current input or selection.

Scroll up within the selected menu.

Scroll down within the selected menu.

Select the displayed menu item in the menu. When entering a number, pressing this key indicates accepting the displayed value.