Horiba D-73 Portable pH/ ORP/ ION meter

Functions

• The built-in data memory (1000 items)
• Connecting to a computer allows measurement data to be collected.
• Output to a GLP/GMP-compatible printer is possible.
• Automatic calibration and calibration interval alarm function
• Usable with both 5-point calibration and USA/NIST standard solutions.
• Electrical resistivity/total dissolved solids/salt content conversion functions
• Automatic range switching, automatic temperature conversion, and unit switching functions
• Interval measurement function
• Sample ID No. setting function
• Clock function and auto power-off function
• Usable with AAA alkaline batteries, Ni-MH batteries, or adapter.
• IP67-compliant waterproof and dustproof structure^*.

Specifications

MODEL : D-74

pH
Measuring principle : Glass electrode method

Measuring range : pH 0.00～14.00

Display range : -2.00～16.00 ※Flashing in the case of outside measurement range.

Resolution : 0.01 pH

Repeatability : ±0.01 pH±1digit

Auto calibration (5 points) : 〇

Calibration record : 〇

Standard solution Auto-detect :〇

USA/NIST selectable : 〇

Calibration interval alarm : 〇

mV(ORP)
Measuring range (Display range) : -2000～2000 mV
※Flashing in the case of outside measurement range.
Resolution : 1 mV
Repeatability : ±1 mV±1digit
Absolute. relative selectable : 〇

Temperature
Measuring range (Display) : 0.0℃～100.0℃（-30℃～130℃）　
※Flashing in the case of outside measurement range.
Resolution : 0.1℃
Repeatability : ±0.1℃±1digit
Calibration function : 〇

Conductivity
Measuring principle : 2 AC bipolar method
Measuring range (Display range) : 0.0 μS/m～200.0 S/m*1
Resolution : 0.05%F.S.
Repeatability : ±0.5% F.S.±1 digit
Auto range : 〇
Change unit (S/m,S/cm) : 〇
Auto temperature conversion (25℃) : 〇
Temperature coefficient (0～10%/℃) : 〇

Salinity
Measuring principle : Conversion from conductivity value
Measuring range (Display range) : 0.00%～4.00%
（0.0 PPT～40.0 PPT）
Resolution : 0.01%/0.1 PPT
Change unit (%,PPT) : 〇
Calibration function : 〇

Resistivity
Measuring principle : Conversion from conductivity value
Measuring range (Display range) : 0.000 Ω・m～2.000 MΩ・m*2
Resolution : 0.05%F.S.
Repeatability : ±0.5% F.S.±1 digit

TDS
Measuring principle : Conversion from conductivity value
Measuring range (Display range) : 0.01 mg/L～100 g/L
Resolution : 0.01 mg/L

Display : Custom LCD with backlight

Function
PC connectivity*3 : 〇
Printer connectivity（GLP/GMP） : 〇
Temperature　compensation（Auto/manual) : 〇
Auto Hold function : 〇
Data memory number : 1000
Interval memory : 〇
ID input : 〇
Clock function : 〇
Auto power off : 〇
Battery Level Indicator : 〇

Dustproof and waterproof standard : IP67

Operating ambient temperature/ humidity : 0℃ to 45℃ , 80% or less in relative humidity (no condensation)

Power : LR03/AAA alkaline batteries or AAA Ni-H rechargeable batteries × 2
AC adapter 100 V to 240 V 50/60 Hz (option)

Current consumption : Less than 5 mA

Battery life*4 : Approx. 200 hours

Dimension : Approx. 67 (80) × 28 (42) × 170 mm (The figures in parentheses are maximum thicknesses.)

Weight (without batteries and electrode) : Approx. 285 g

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