I. Introduction
Thank you for purchasing the dissolved oxygen meter produced by our Shanghai Yueci Electronic Technology Co., Ltd. In addition to measuring dissolved oxygen at sea level and dissolved oxygen in salt-free water, you can enter salinity compensation when measuring high mountains or salt water . At the same time, you can also directly print with the printer through infrared connection. Please check the instructions before use. You will find that our dissolved oxygen meter is very easy to operate and is also a cost-effective dissolved oxygen instrument.
2. External plug and panel display
1. Top Picture
â—‹ â—‹
Infrared output point at the connection electrode
â—‹ Power supply
â—‹ RS232
Picture on the right
Picture 1 Model 607 (8401)
HLD
READY
CAL
18.88% mg / l ppm
-1888.8 ℃
Picture 2 Model 608 (8402)
HLD
READY
CAL
18.88% mg / l ppm
Ppt mm hg kpa
-1888.8 ℃
2
Picture 3 Model 605 (8403)
HLD
MAX
MIN
AGV
READY
CAL
18.88% mg / ppm
-1888.8 ℃
REC YM-DH: M: S 88: 88: 88: 88
As shown in the top picture, the measurement electrode connection is on the front of the instrument, the infrared output point (only 8403) on the right, and the RS232 output and interface on the right of the instrument. Picture 2 shows the full display of the LED. The LCD panel will display for 3 seconds when it is turned on. This display includes 5 different areas. The different functions are shown as follows:
1. The maximum number in the upper right is the available percentage of the dissolved oxygen number unit, ppm or mg / l. The lower line shows the pressure compensation (only 8402, 8403). The unit is PPT.
2. Below the picture 2 is the temperature display.
3. The display in the lower right area is (only 8403) year, month, day and hour, minute and second.
4. The upper left display shows HLD (remember the instantaneous reading value) MAX maximum value, MIN minimum value, AVG average value, READY preparation, CAL correction.
5. At the lower left, REC (only 8403) records past records, and the number of pens is at 88 on the right.
3. The specifications of this instrument are as follows:
model
8401
8402
8403
Dissolved oxygen
0.0-199.9%
0.0-199.9%
0.0-199.9%
Resolution
0.1%
0.1%
0.1%
Accuracy
1.5%
1.5%
1.5%
Dissolved oxygen
0.00-19.99ppm
0.00-19.99ppm
0.00-19.99ppm
Resolution
0.01ppm
0.01ppm
0.01ppm
Accuracy
1.5%
1.5%
1.5%
Salinity compensation
0.0-50.0ppt
0.0-50.0ppt
Resolution
0.1ppt
0.1ppt
Pressure compensation
500-1499mmhg / l
66.6-199.9Kpa
Resolution
1mmhg / 0.1Kpa
recording
99point
Instant record
Yes
RS232
Yes
Yes
Yes
temperature
0-30 ℃
0-30 ℃
0-50 ℃
Four, automatic shutdown
In order to save battery, the instrument has an automatic shutdown function, the operation is as follows, when the machine is in the shutdown state, long press the on key for about 1 second, until lcd displays prn po.o At this time enter the parameter correction mode and press â–² to make po.o become p5 .o, lcd is displayed as aut and p5.o at this time, press enter, then aut becomes 6 groups of automatic shutdown time (minutes) 20, 30, 40, 60, 90, 120, selectable, press â–² After the required time, press the enter key and then press the switch key to complete the setting.
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