Product portfolio

SEMIKI measurement solution

SoC test system Vision Camera System PCB function tester Chip loading machine Repair measuring equipment

Electronic industry measuring machine

Multi-channel data logger Standard AC/DC programmable power supply High voltage meter Insulation resistance tester Ground resistance meter Leakage current meter ESD measuring device Electrical characteristics analysis equipment Production room equipment

Force and mechanical measuring equipment

Force measuring device clamp set Force sensor Force measuring base Torque wrench Force measuring system Decibel Material thickness gauge Vibration meter Gas meter Mechanical force gauge Electronic force gauge Torque measuring machine Speed machine Device for measuring material hardness Power screwdriver

Measuring equipment for mechanical industry

Standard measuring tools Thread check conditioner Profile measuring machine Coating thickness gauge Quality testing machine Magnetic measuring device Altitude measure

Temperature and humidity measuring device

Temperature and humidity meter Substance concentration measuring device Detachable probe thermometer Infrared thermometer, thermal camera Self-recording thermometer

Optical measuring equipment

Industrial cameras Measurement microscope Digital microscope Stereo microscope Beam intensity meter Colorimeter Endoscopy equipment

Lab equipment

Industrial scales Desktop scale Technical scales Analytical balance Industrial floor scales Hanna experimental measuring equipment Clean room equipment Spectroscopy and X-Ray equipment Simulation cabinets, drying cabinets, furnaces

PCA340-2 Chlorine, pH and Temperature Analyzer and Control

Producer: HANNA Instruments

SKU: HANNA-PCA340-2 Category: Hanna experimental measuring equipment

PCA340 phân tích và kiểm soát nồng độ clo, pH và nhiệt độ liên tục trong dòng và phân liều điều chỉnh clo, thời gian lấy mẫu tuỳ chọn, hệ thống báo động, kết nối dữ liệu thông qua mạng lưới GSM, giao diện dễ sử dụng, chuỗi thông tin qua RS485, đầu ra dạng ghi, đầu ra phân liều 4-20mA, vỏ máy Nema 4X.

From drinking water and wastewater treatment to pool and spa sanitation, controlling chlorine, bromine or iodine levels is important for public health as well as ROI and beneficial for heating systems and industrial applications.

Dòng PCA340 kiểm soát clo dư hoặc clo tổng từ 0.00 đến 5.00 mg/L và pH từ 0.00 đến 14.00

In the DPD colorimetric method, the indicator N, N-Diethyl-p-phenylene-diamine and a buffer are mixed with the sample. The residual chlorine oxidizes the DPD indicator reagent at pH 5.5 and 6.0 to form a red compound. The intensity of the color is proportional to the concentration of chlorine in the sample. The purpose of the buffer solution is to maintain the appropriate pH.

To measure total chlorine (free chlorine and combined chlorine), potassium iodide is added. A pH of 5.1 is required for this reaction. Thus, total chlorine measurement requires another buffer solution containing potassium iodide. Once the reactions are complete, the optical signal at 555 nm is compared with the signal obtained after passing the sample before the reagent was added. Finally, the chlorine concentration is calculated and displayed on the screen.

Indicator and buffer reagents are supplied with the meter. With a 5 minute sampling time, reagents only need to be replenished about once a month.

Vì clo, brom và iot có liên quan chặt chẽ với độ pH nên HANNA đã thiết kế thêm dòng máy phân tích mới PCA 320 để kiểm soát độ pH và nhiệt độ.

PCA 340 sử dụng đầu dò pH HI1005 đo độ pH liên tục trong dòng mẫu trong khoảng từ 0 đến 14 pH. Nhiệt độ mẫu được đo trong khoảng từ 5 đến 75°C. pH và nhiệt độ được hiển thị trên bảng điều khiển phía trước, và giá trị pH được bù nhiệt độ.

Measurement and control cycle

PCA has a control time cycle that can be set by the user depending on the size of the control system. Control, pumping and alarm processes can be performed based on this time cycle. The cycle can be set from 3 to 90 minutes.

Chlorine Control

Four user-adjustable chlorine level setpoints: one proportional dosing setpoint, two alarm setpoints and minimum pump level. The proportional dosing factor (1/Δ) is optional with Δ between 0.1 and 2 pH. The chlorine dosing system controls an SPST relay. Each alarm can be enabled or disabled.

pH control

3 pH concentration set points can be set: one control set point and two alarm set points. The pH control modes are user selectable; on/off or proportional dosing. The proportional dosing factor (1/Δ) is optional with Δ between 0.1 and 2 pH. The hysteresis value must be between 0.05 and 2.00 pH. The pH dosing system controls an SPST relay.

Báo động pH và nhiệt độ có thể được kích hoạt hay vô hiệu hóa, và hai mức báo động có thể được thiết lập bởi người sử dụng cho nhiệt độ. Tình trạng báo động điều khiển một relay SPDT. Hệ thống báo lỗi kích hoạt một relay báo hiệu khi cần sự can thiệp vào quy trình. Hệ thống báo lỗi điều khiển một relay SPST.

Analog output

Two 4-20 mA or 0-20 mA outputs are available for connection to external devices such as chart recorders. The user can connect two dosing pumps via the 4-20 mA outputs for chlorine and acid/base dosing. The analog outputs are fully programmable and compatible with chlorine concentration, pH or temperature values. The analog output limits are selectable for each parameter.

Record data

Up to 3500 values can be stored (at least 7 days of recording at 3 minute intervals), which can be reviewed or downloaded. The recorded data records include the time, full information about the parameter values and the alarm status at that time.

Alarm and warning system

Through this system, the user can enable or disable low and high alarms for all parameters. The system also provides over-dose protection and alerts when the system is not working properly. The system will stop the process until the error is corrected by the user. The time is displayed on the main control panel and the reminder times are for “old standard”, “expired reagent”, and “expired SIM”. All these alerts are generated based on user settings.

Installation

Easy control with wall mount kit and supplied with chemicals.

(Note: Not for Bromine and Iodine)

Tùy chọn chỉ tiêu:

PCA310	Residual chlorine and total chlorine
PCA320	Residual Chlorine, Total Chlorine, pH and Temperature
PCA330	Residual Chlorine, Total Chlorine, pH, ORP and Temperature
PCA340	Residual Chlorine, Total Chlorine, pH and Temperature

SPECIFICATIONS

Chlorine	The scale	0.00 to 5.00 mg/L (ppm)
	Resolution	0.01 mg/L (ppm)
	Accuracy	± 8% or ±0.05 mg/L whichever is greater
	EMC deviation	±0.05 mg/L (ppm)
	Calibration	1 point
	Sampling time	3 to 90 minutes
	Dosage division	Proportional relay or 4-20mA output
	Delta	Optional from 0.1 to 5 mg/L (ppm)
pH	The scale	0.00 to 14.00 pH
	Resolution	0.01 pH
	Accuracy	± 0.05 pH
	EMC deviation	± 0.2 pH
	Calibration	1; 2 point or in-line calibration
	Sampling time	3 to 120 minutes
	Dosage division	On/off or proportional, relay or 4-20mA output
	Delta	Optional from 0.1 to 2 pH
	Delay	Optional from 0.05 to 2 pH
Temperature	The scale	5.0 to 75.0^oC
	Resolution	0.1^oC
	Accuracy	± 0.05^oC
	EMC deviation	± 0.5^oC
Exit	4-20mA, 0-20mA
PC connection	RS485, galvanic seperated
Baud rate	1200, 2400, 4800, 9600 bps
Record data	Đến 3500 bản ghi
Alarm relay	SPDT 5A, 230V
Pump relay	SPDT 5A, 230V
Report an error	SPDT 5A, 230V
Pressure rate input	0.07 to 4 bar without external pressure regulator (for pressures exceeding 4 bar an external pressure regulator is required)
Flow rate	100 to 300 mL/min
Sample temperature	5 to 40°C (41 to 104°F)
Input/Output	12mm (1/2″) male NPT fitting
Connect drain	10mm (3/8″) barb
pH/t electrode^o	HI1005 (sold separately)
Electricity supply	20 VA
Bark	NEMA-4X
Size	318 x 267 x 159 mm
Mass	5 kg không thuốc thử
Guarantee	12 months
Supply includes	PCA340 được cung cấp kèm 2 chai thuốc thử, 2 mũ thuốc thử, 1 bột gói bột DPD, ống dẫn và hướng dẫn
Note	PCA340-1: 115V PCA340-2: 230V