Application:Suitable for water quality monitoring in fields such as chemical engineering, refining, metallurgy, pharmaceuticals, power plants, and environmental protection

Main features:

Adopting microcontroller control, easy and simple operation; Features of disk mounted or wall mounted structure, easy to install,Operation and maintenance

Capable of measuring water samplespHValue, temperature value（℃）AndORPprice

Equipped with automatic slope calculation and automatic temperature compensation function

Equipped with automatic recognition4.00、6.86、9.18The functions of three standard buffer solutions

Having isolated output（4～20）mADCSignal, output upper limit and output lower limit can be infinitely adjusted

Having isolationRS-232perhapsRS-485(Optional) Digital signal output

Equipped with automatic upper and lower limit alarm functions, as well as power-off data protection function

Capable of storing and querying measurement data, capable of storing400Measurement data (including measurement values and storage time), with data retention function

The instrument is equipped with six control relays. Except for two for outputting upper and lower limit alarm signals, the other four relays are programmable and can be combined with their suction and release times to achieve automatic cleaning, automatic calibration, and other control functions of the instrument.

The protection level of the electronic unit chassis isIP65It can prevent water spray and dust intrusion.

There are two ways to combine instruments:

a）PHG-217DType IndustrypH/ORPMeasurement controller (suitable for situations where the distance between the measurement point and the instrument is large, maximum distance)20rice）

b）PHG-217D-1Type IndustrypH/ORPMeasurement controller (suitable for situations where the measurement point and instrument are in close proximity)

Main technical indicators:

1.Measurement range:

ORP：（-1800～1800）mV

pH：（0.00～14.00）pH

Temperature:（-10.0～120.0）℃

2.Basic instrument error:

ORP：±10mV±1One word

pH：±0.05pH±1One word

Temperature: ±0.5℃±1One word（0.0℃≤T≤60.0℃）； Other scopes±1.0℃±1One word

3.Stability of electronic unit:±0.02pH/24h

4.Electronic unit input impedance: not small1×10⁺¹²Ω

5.Electronic unit output current error:±1%FS; (Maximum load)750Ω）

6.Temperature of the tested water sample:（0～60）℃

7.Isolation output signal:（4～20）mADC, maximum load750Ω

8.Output upper and lower limits:

pH: In（0～14.00）pHin range,Choose arbitrarily (its output corresponds to a current of)4mA～20mA）

ORP: In（-1800～1800）mVin range,Choose arbitrarily (its output corresponds to a current of)4mA～20mA）

9.Control accuracy:±0.1pH

10.Normal working conditions of the instrument

a）Environmental temperature:（-5～50）℃；

b）Relative humidity: not greater than90%；

c）Power supply: AC voltage（220±22）V, frequency（50±0.5）Hz

d）There are no corrosive gases present in the surrounding air;

e）There are vibrations around that do not affect performance;

f）There is no electromagnetic interference that affects performance other than the geomagnetic field around.

11.Dimensions (length)×wide×High):144mm×144mm×163mm Hole size:138mm×138mm

12.Weight:2.5kg