Company Introduction   Shandong Dongrun Instrument Science and Technology Co., Ltd. was founded in 1998, specializes in manufacturing online water quality analysis equipment, material level meters, pressure gauges, flow meters, special temperature gauges and laboratory analysis equipment. Our company cooperate with the Chinese Academy of Sciences to build a water analysis laboratory, and the main products are TOC analyzer, ammonia analyzer, fluorescence oxygen analyzer, etc. We have passed the ISO9001 certification and has a professional R & D team, providing technical support to meet customer demand, particularly in the anti- corrosion, our company has a unique technology to meet different conditions of corrosion requiremes.
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DR-5000 multi-parameter water analyzer is a highly integrated measured parameter wall-mounted equipment which can test the parameter all in one, compact structure, with input probe, with high degree of intelligence and flexibility, widely used in water supply, municipal, farming and other industries.
 
Product Feature                                        Â
 • Can be connected with an analog or digital sensor, readily assembled into a conventional five-parameter water quality analysis instrument.
 •  DC12V can supply current of less than 500mA, can use solar powered.
 •  Controller whole intelligent, automatic identification of sensor.
 •  Display the SD card storage data on the computer.
 •  Can calibrate the sensor both in the scene and in the lab.
 •  4.3-inch LCD display, showing beautiful, easy manipulation, can display multiple parameters in the same time.
 •  With power protection and automatic recovery function call, parameter settings after power is not lost.
 •  No reagent filling, no reagent consumption.
Specifications
 •  Power:85-265VAC , 20W;
 •  Meter size (width X height X thickness): 320X260X130:
 •  4-20mA analog and RS485 digital output, MODBUS protocol;
Specification                              Â
Temperature
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Principle
platinum resistance temperature sensor
Range
-10 ~ 150°C
Accuracy
± 0.2 °C
Installation
bracket mounting
PH / ORP
Principle:
glass electrode method
Range
-2000 ~ + 2000mv / -2 ~ 14 pH
Sensitivity
≤ ± 0.5mV / ± 0.01 pH
Compensation
0 ~ 105 °C
Response Time
<50 seconds
Installation
bracket mounting
Dissolved Oxygen Sensor
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Principle
Fluorescence
Measuring Range
0 ~20.00 mg/L, -5 ~60 °C
Accuracy
≤0.1 mg/L
Resolution
≤0.01 mg/L
Compensation
 0 ~ 50 °C
Response Time
60 seconds;
Repeatability
0.05mg/L
Installation
bracket mounting
Conductivity Sensor
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Principle
Electromagnetic method
Measuring Range
0~200~2,000~20000µS/cm.
0~2~20~200~2000mS/cm
Temperature
-10~200 °C
Repeatability
±1%
Accuracy
±0.01 %
Calibration
Standard Solution KCL,25 °C
Compensation
-20 ~100 °C
Response
<60 seconds
Installation
bracket mounting
Turbidity Sensor
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Principle
near-infrared 90°scatter
Range
0.001-4000NTU
Resolution
≤0.01NTU or 0.1NTU
Accuracy
±0.5%FSD
Reproducibility
±1.0%F.S
Teflon Washer with the most uprising characteristics as below:
A.Resistant to many chemicals, includes ozone, chlorine, acetic acid, ammonia, sulfuric acid and hydrochloric acid.
B.Weather and UV resistance
C.Non Stick::Very few solid substances will permanently adhere to a Teflon coating. While tacky materials may show some adhesion, almost all substances release easily.
D. Outstanding performance at extreme temperatures to meet your special temperatures 'demands: it can temporarily withstand temperatures of 260C and cryogenic temperatures of -240C and still with the same chemical properties. Its initial melting point of 342C (+- 10C) & second melting pint at 327C (+- 10C).
E:The Teflon Washer Series Fittings with Class-A O-ring ,The FKM O-RING available for special required .