Advantage：
　● LED double digital show. Show tested liquid conductance rate or resistance rate and temperature.
　● Switch automatically the range and temperature compensating.
　● Can choose three kinds proper test frequency according to tested liquid conductance number.
　● Provide free expanding and separated power output.
　● Set alarm freely and provide LED alarm guide and touching point.
　● The instrument has self diagnose function and can notice related message on the screen.
　● The instrument has self diagnose function and can notice related message on the screen.
　● The structure is simple and easy to maintain

main technical index
　1. measuring range 0～2000 mS/cm
　2. measuring accuracy conductance rate : ±0.5％FS±1dig. temperature: 0.5 ℃
　3. stability: ±0.5％FS±1dig /24h
　4. temperature compensation range : 5～60℃
　6. eparate output signal:0～10mA,0～20mA or 4～20mA
　7. 报alarm touching point capacity:AC220V/3A ; DC24V/5A alarm accuracy: ±0.2％FS
　8. power supply: AC220V±22V , 50Hz±1Hz power: 12W

order notice：
　　Please indicate meter measuring range, electrode constant （0.01、0.1、1.0）, hard or soft pipe connection and the length between electrode and the cable(5m in general).

Advantage
　● LED double digital show. Show tested liquid pH (or electric No.) and temperature.
　● Temperature compensating automatically is from SCM function.
　● Adopt import complicated electrode, high curacy, good stability, and long usage.
　● Zero automatism soft ware correction compensates meters floating and is in high curacy and good stability.
　● The corresponding pH standard cushion liquid can be automatically corrected by the instrument.
　● It has two correction ways: one point or two point.
　● Can provide free expanding separate current and alarm output.
　● The meter is adopted guiding operation, which is very clear and easy to learn.
　● The structure is simple and easy to maintain.

main technical index：
　1. measuring range： pH: 0～14.00pH temperature: 0～100℃
　2. measuring accuracy：±0.05pH show distinguishing rate: 0.01pH
　3. nput resistance：＞1012W input current：＜2×10-12A
　4. temperature compensation range：5 ～60℃
　5. stability： ±0.05pH/24H responding time：less than one minute
　6. separate output signal:0～10mA,0～20mA or 4～20mA
　7. alarm touching point capacity:AC220V/3A ; DC24V/5A alarm accuracy: ±0.2％FS
　8. power supply: AC220V±22V , 50Hz±1Hz power: 12W
　9. instrument marked ways：one point or two points correction is automatically finished by the instrument.

DOG-328-A industrial dissolved oxygen analysis meter is adopted abroad advanced technology into a new generation interlligentizing digital dissolved oxygen analysis meter. It is in charm shape, simple structure, convenient operation, clear show, strong function, good stability, and high reliability reaching 0-20.00mg/l, used in continuous monitoring liquid dissolved oxygen of chemistry, oil refining,metallurgy, pharmacy, food, printing and dyeing, electric power, environment protection, etc.

Advantage：
　● LED double digital show. Show tested liquid dissolved oxygen number and temperature.
　● Temperature compensating automatically
　● Teflon turns into sensitive membrane and can be used in polluted water.
　● Two points correction make measuring accuracy
　● Can provide free expanding separate current output.
　● Owns free setting alarm point and provides LED alarm guiding and electronic appliance touching point.
　● The instrument have self-diagnosing ability and can show the related message on the screen.
　● The meter is adopted guiding operation, which is very clear and easy to learn.
　● The structure is simple and easy to maintain.

main technical index :
　1. measuring range dissolved oxygen mg/l: 0－200.0mg/l mg/l: 0－20.00mg/l　 temperature：0－60.0℃
　2. basic error dissolved oxygen： ±1％FS temperature: ±0.5 ℃
　3. stability: ±0.5％FS /24h
　4. temperature compensation range and influenced error: 5～45℃；±0.5%FS/5℃
　5. separate output signal:0～10mA,0～20mA或or 4～20mA
　6. alarm touching point capacity:AC220V/3A ; DC24V/5A alarm accuracy: ±0.2％FS
　7. power supply: AC220V±22V , 50Hz±1Hz power: 12W

advantage
　● Thickness and temperature is showed at the same time by double LED and conductance rate show can be switched.
　● Temperature compensating automatically is from SCM function
　● The user can set switching relation between conductance and thickness.
　● Automatism software correction can compensate instrument floating from different factors and with high curacy and good ability.
　● The sending machine cannot be destroyed by acid and alkali, which owns long usage.
　● The set parameter has power protection ability and saves from batteries supporting（EEPROM）
　● Can provide free expanding separate current and alarm output.
　● Can freely set alarm point and provide LED alarm guiding and continuous electronic appliance touching point.
　● Watchdog ensures the system working.
　● The meter is adopted guiding operation, which is very clear and easy to learn.

main technical index
　1. measuring media：HCl 、H2SO4、NaOH、NaCl
　2. measuring range：thickness： 0～10%（weigh percent） temperature：0℃～100℃
　3. measuring accuracy：thickness：better than±0.3％；temperature：better than ±0.5℃
　4. temperature compensation range：5℃～55℃
　5. stability： ±1 ％FS/24h
　6. separate output signal and bearing：0～10mA;0～20mA or 4～20mA one of three..
　7. alarm touching point capacity： AC220V，3A； DC24V，5A
　8. tested media press：less than 0.2Mpa flux：200 ml/min ～1000ml/min
　9. power supply： AC220V±10%，50Hz±2%，power：20W