I. product overview
Zw-sdj series industrial online acidity meter EEPROM type memory, no backup battery, no loss of data after power off; Small temperature drift, stable, accurate; The operation menu design is unique, avoids the user tedious operation, the use surmountable convenience; Large screen multi-parameter (dissolved oxygen value, temperature, output current, etc.) LCD backlight display, intuitive and easy to read; 3 minutes backlight off automatically without key operation, which can save electricity and prolong the service life of meter; Adjustable screen contrast level; High and low alarm points can be set arbitrarily; The screen can directly display alarm status and can be accompanied by switch ON/OFF signal output; Arbitrary setting function of hysteresis to avoid frequent action of switch relay; RS485 communication optional.
Ii. Application:
Zw-sdj series industrial online acidity meter can be widely used in chemical fertilizer, metallurgy, environmental protection water treatment engineering, pharmacy, biochemistry, food, aquaculture and tap water and other solutions dissolved oxygen value continuous monitoring.
Iii. Main features:
1. All imported chips and components are adopted, and zui new surface sticker production process is adopted to ensure stable and reliable operation of the instrument;
2. Multi-parameter display: PH value, temperature value, high alarm setting value, low alarm setting value, whether the meter is in high or low alarm state, and the current time can be displayed at the same time. Each parameter is clear at a glance;
3. The unique PH value corresponding to 4 ~ 20 mA current output is reversible and can be set at any value, which can bring more special convenience to users;
4. Adopt waterproof and gas-proof fully sealed shell, which can be used in very bad environmental conditions, and the protection grade is up to IP65;
5. RS485 communication (optional);
6, unique history curve function, can record the current 30 days of historical data and query function;
7. The unique design of the operation menu brings great convenience to users, who can also use it freely without reading the manual;
8, no button operation for three minutes backlight automatically turn off both energy saving and prolong the service life; The contrast level of the screen is adjustable.
Iv. Technical parameters
1. Measuring range: 0.00 ~ 14.00pH;
2. Resolution: 0.01pH;
3. Accuracy: level 0.05;
4. Stability: 0.03pH/24h;
5. PH standard solution: 4.00/7.00/10.01; 9.18/4.01/6.86.
6, temperature compensation: 0 ~ 99.9 ℃ (pH);
7. PH correction range: 0 1.45 pH; Slope + / - 30%;
8. Action control: two sets of ON/OFF relays;
9. Relay hysteresis: set at will;
10. Signal isolation output: 4 ~ 20mA isolation protection output;
11, working conditions: temperature: 5 ~ 45 ℃;
12. Signal input impedance: 1 1013W;
13. Current output load: large zui load of 500W is allowed;
14. Ground voltage insulation: zui small load is 500VDC;
15. Working voltage: 230VAC 10%, 50/60hz;
16. Protection level: IP65;
17, can be adapted to domestic and foreign manufacturers of composite industrial pH/ORP electrode;
18. Size: 96 96 145mm;
19. Mounting hole size of the instrument panel is 92 92mm;
20. Weight: 0.9kg.
After-sales service commitment:
1. If the quality problem of zhongwei measurement and control products sold by our company occurs within 12 months, we will be responsible for free maintenance.
2. During the warranty period, if there are any quality problems with our products, we will repair or replace them for free.
3. During the warranty period, if the product is damaged due to improper use by the user, our company will be responsible for maintenance and charge the cost of damaged parts.
4. If quality problems occur after the warranty period, our company will be responsible for maintenance and charge the cost of damaged parts.
5. If users need our on-site service, our service staff will arrive at the site within 12 hours for users in the province and within 48 hours for users outside the province.
