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Water Analysis

Water-AnalysisThe HD2105.1 and HD2105.2 are portable instruments with a large LCD display. They measurethe pH and the redox potential (ORP) in mV. They measure the temperature using Pt100 orPt1000 immersion, penetration or contact probes.The electrode calibration can be carried out on one, two or three points and the calibrationsequence can be chosen from a list of 13 buffers.

The temperature probes are equipped with an automatic recognition module and factory calibrationdata are stored inside.The HD2105.2 is a datalogger. It stored up to 34,000 pH and temperature samples whichcan be transferred to a PC from the instrument connected via the multi-standard RS232Cserial port and USB 2.0. The storing interval, printing, and baud rate can be configured usingthe menu.The HD2105.1 and HD2105.2 models are fitted with an RS232C serial port and can transferthe acquired measurements in real time to a PC or to a portable printer.The Max, Min and Avg function calculate the maximum, minimum or average values.Other functions include: the relative measurement REL, the Auto-HOLD function, and the automaticturning off that can also be excluded laboratory equipment indonesia.

INSTRUMENT TECHNICAL CHARACTERISTICS

Instrument

Dimensions(Length x Width x Height) :185x90x40mm

Weight : 470g (complete with batteries)

Materials : ABS, rubber

Display : 2x4½ digits plus symbols, Visible area: 52x42mm

Operating conditions

Operating temperature : -5…50°C

Storage temperature : -25…65°C

Working relative humidity : 0…90%RH without condensation

Protection degree : IP67

Power

Batteries : 4 1.5V type AA batteries

Autonomy : 200 hours with 1800mAh alkaline batteries

Power absorbed with instrument off : 20μA

Mains : Output mains adapter 12Vdc / 1000mA

Security of memorized data : Unlimited, independent of battery charge conditions

Time

Date and time : Schedule in real time

Accuracy : 1min/month max drift

Measured values storage - model HD2105.2

Type : 2000 pages containing 17 samples each

Quantity : Total of 34000 samples

Storage interval : 1s, 5s, 10s, 15s, 30s, 1min, 2min, 5min, 10min, 15min, 20min, 30min and 1h.

Serial interface RS232C

Type : RS232C electrically isolated

Baud rate : Can be set from 1200 to 38400 baud

Data bit : 8

Parity : None

Stop bit : 1

Flow Control : Xon/Xoff

Serial cable length : Max 15m

Selectable print interval : 1s, 5s, 10s, 15s, 30s, 1min, 2min, 5min, 10min, 15min, 20min, 30min and 1h.

USB interface - model HD2105.2

Type : 1.1 - 2.0 electrically isolated

Connections

Input module for thetemperature probes : 8-pole male DIN45326 connector

pH/mV input : Female BNC

Serial interface and USB : 8-pole MiniDin connector

Mains adapter : 2-pole connector (positive at centre)

Measurement of pH by Instrument

Measurement range : -2.000…+19.999pH

Resolution : 0.01 or 0.001pH selectable from menu

Accuracy : ±0.001pH

Input impedance : >10Ω

Calibration error @25°C : |Offset|>20mV Slope<50mV/pH or Slope>63mV/pHSensitivity < 85% or Sensitivity > 106.5%

Temperature compensation automatic/manual : -50…+150°C

Measurement of mV by Instrument

Measurement range : -1999.9…+1,999.9mV

Resolution : 0.1mV

Accuracy : ±0.1mV

Drift after 1 year : 0.5mV/year

Measurement of temperature by Instrument

Pt100 measurement range : -200…+650°C

Pt1000 measurement range : -200…+650°C

Resolution : 0.1°C

Accuracy : ±0.1°C

Drift after 1 year : 0.1°C/year