Dual monitoring of pH and ORP in large LED display and
single control of either pH or ORP. Highly accurate.
Digital pH-ORP controller with large size LED display for
easy reading.
High input impedance avoid measuring error.
Built in SLOPE and CAL. adjust knob, easy for single point
or two points pH calibration.
"PH - ORP" control, the relay "PH" when measuring value
is above the set point for pH.
And the relay "ORP" when measuring value is below the
set point for ORP.

Model	KL-303
Measuring range	PH	0.00~14.00PH
	ORP	0~±1999mV
Accuracy	PH	±0.1%+2 digits
	ORP	±5 mV
Resolution	PH	0.01PH
	ORP	1mV
Set Range	PH	3.50～10.50PH
	ORP	0~1000mV
Environment	Temperature:0~50℃ Humidity<95℅
Power Supply	220V±10℅ 50Hz±2℅
Dimensions	160mm×102mm×40mm

Kelilong Electron Co.Ltd, established in May 1993 and awarded by Fujian Standard Measurement Bureau the manufacture licence of measuring utensils under the serial No.00000136, is a specialized manufacturer and marketer of the analytic instruments and meters. Currently, the company mainly devotes itself to water quality detection, RPM rotary speed measurement, air quality testing and the production of high content technological products, which are applicable to the fields of environmental protection, chemical fiber, farming, school scientific research, energy, transportation, aviation, household appliances and etc.

Major products: Water Quality Testing(monitoring) Instrument: PH meter,conductivity meter, TDS meters, ORP meter; pNa meter, salt meter; rotary speed measurement of the machinery manufacturing equipment: Many functions tachometer; air quality testing instrument: thermometer, hygrometer; Others: Refractometer, Water pump.

Regarding the concept of "diligence makes success" as the impetus of the enterprise and keeping the motto of "seeking for the best" over these years, Kelilong devotes itself to unceasingly introducing senior technicians and administrators and purchasing advanced production and testing equipment. In this way, Kelilong has developed from a small enterprise into an enterprise who has set up its brand standing and revealed its scale by exporting its products to Germany, France, Italy, Switzerland, Korea, India, Egypt, and etc. while establishing offices in Guangzhou, Shenzhen, Ningbo, Wenzhou and etc..

Adhering to the principle of "offering independent design, innovative products and superior service", Kelilong constantly brings out new products based on its own technological preponderances. Nowadays, quite a many engineers of Kelilong are engaged in the exploitation of new technologies and products. They always master the advanced technology and keep close concern on the market demand so as to ensure the adaptability and reliability of the products, firmly control the quality and present perfect products to the users according to the standard of Measurement Law.

Kelilong will always attach great importance to meeting your needs, for "utilizing science & technology and seeking perfect" is the permanent goal of Kelilong.