pH, conductivity, dissolved oxygen, and temperature, Model : HD3405.2 - HD3406.2 - HD3409.2 - HD3456.2, Brand : DeltaOhm

Introduction The instrument series HD34… is made up of 4 bench top instruments for electrochemical measures: pH, conductivity, dissolved oxygen, and temperature. The displayed data can be stored ( datalogger) and can be transferred to PC or serial printer thanks to the multistandard serial ports RS232C and USB2.0 and software DeltaLog9 ( Vers.2.0 and subsequent ones) . The storing and printing parameters can be set from menu. The HD3405.2 measures pH, redox potential ( ORP) in mV. It measures temperature with Pt100 or Pt1000 immersion, penetration or contact probes. The pH electrode calibration can be carried out on one, two or three points and the calibration sequence can be chosen from a list of 13 buffers. The HD3406.2 measures conductivity, liquid resistivity in liquids, total dissolved solids ( TDS) and salinity using combined 4-ring and 2-ring conductivity/ temperature probes. Temperature is measured by Pt100 or Pt1000 immersion, penetration or contact probes. The probe calibration can be performed automatically in one or more of the 147¼ S, 1413¼ S, 12880¼ S or 111800¼ S/ cm conductivity calibration solutions. The HD3409.2 measures the concentration ( in mg/ l) of dissolved Oxygen in liquids, the saturation index ( in% ) and the temperature using SICRAM combined probes of polarographic type with two or three electrodes and integrated temperature sensor. Temperature is measured by Pt100-SICRAM or direct 4 wire-immersion, penetration or contact probes. Thanks to an internal pressure sensor, the instruments automatically compensate for barometric pressure. The instrument anticipates automatic compensation of the Oxygen probe membrane permeability and of the salinity of the liquid being examined. The dissolved Oxygen probe’ s quick calibration function guarantees timely correctness of the performed measurements. The HD3456.2 measures pH, mV, redox potential ( ORP) , conductivity, resistivity in liquids, total dissolved solids ( TDS) , and salinity using combined 4-ring and 2-ring conductivity/ temperature probes. Temperature is measured by Pt100 or Pt1000 immersion, penetration or contact probes. The pH electrode calibration, as well as manual, can be carried out on one, two or three points and the calibration sequence can be chosen from a list of 13 buffers. The probe calibration can be performed automatically in one or more of the 147¼ S, 1413¼ S, 12880¼ S or 111800¼ S/ cm conductivity calibration solutions. The display shows continually the temperature in ° C or ° F and one selectable parameter according to the connected probe type, i.e. in case of conductivity probe it is possible to select between Ç or © or TDS or g/ l. Other common function of this instrument series include: Max, Min and Avg function, the Auto-HOLD function, the automatic turning off which can also be disabled. The instruments have IP66 protection degree. Technical characteristics of the instrument series HD34… Common technical data Instrument Dimensions ( Length x Width x Height) 220x120x55mm Weight 460g ( complete with batteries) Materials ABS, rubber Display 2x4½ characters plus symbols visible area: 52x42mm Operating conditions Working temperature -5 … 50° C Stocking temperature -25 … 65° C Working relative humidity 0 … 90% RH without condensation Protection degree IP66 Power Batteries 3 batteries 1.5V type AA Autonomy ( only batteries) 100 hours with 1800mAh alkaline batteries Mains ( cod. SWD10) Output mains adapter 100-240Vac/ 12vdc-1A Security of memorized data Unlimited Selectable storage interval 1s, 5s, 10s, 15s, 30s, 1min, 2min, 5min, 10min, 15min, 20min, 30min and 1hour Time Date and hour Schedule in real time Accuracy 1min/ month max departure 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 immediate or 1s, 5s, 10s, 15s, 30s, 1min, 2min, 5min, 10min, 15min, 20min, 30min and 1ora USB Interface Type 1.1 - 2.0 electrically isolated Common connections to all models Serial interface and USB 8-pole MiniDin connector Mains adapter ( cod. SWD10) 2-pole connector ( positive at centre) 12Vdc/ 1A EMC Standard regulations Security EN61000-4-2, EN61010-1 level 3 Electrostatic discharge EN61000-4-2 level 3 Electric fast transients EN61000-4-4 level 3, EN61000-4-5 level 3 Voltage variations EN61000-4-11 Electromagnetic interference susceptibility IEC1000-4-3 Electromagnetic interference emission EN55020 class B Technical characteristics HD3405.2 pH - mV - ° C/ ° F measurement Measured values pH, mV, ° C, ° F Storage of measured values Type 2000 pages of 17 samples each Quantity 34, 000 sets of measures made up of [ pH or mV] or and [ ° C or ° F] . Measurement connections Temperature probe input 8-pole male DIN45326 connector with SICRAM module or TP47 module female BNC pH/ mV input pH Measurement Measurement range -2.000… + 19.999pH Resolution 0.01 or 0.001pH selectable from menu Accuracy ± 0.001pH ± 1digit Input impedance > 1012© Calibration error @ 25° C | Offset| > 20mV Slope 63mV/ pH Sensitivity 106.5% Automatic / manual -50… + 150° C temperature compensation mV Measurement Measurement range -1999.9… + 1999.9mV Resolution 0.1mV Accuracy ± 0.1mV ± 1digit Drift after 1 year 0.5mV/ year Temperature Measurement Pt100 measurement range -200… + 650° C Pt1000 measurement range -200… + 650° C Ni1000 measurement range -50… + 250° C Resolution 0.1° C Accuracy ± 0.1° C ± 1digit Drift after 1 year 0.1° C/ year Automatically detected pH standard solutions ( @ 25° C) 1.679pH - 2.000pH - 4.000pH - 4.008pH - 4.010pH - 6.860pH - 6.865pH - 7.000pH - 7.413pH - 7.648pH - 9.180pH - 9.210pH - 10.010pH