Polycarbonate resin* used in automobiles and mobile phones has been adopted to enhance shock resistance.
*Polycarbonate resin has about twice the shock resistance of conventional ABS resin.
Backlight allows reading of measured values even in the dark.
*Except D-71
IP67 rated waterproof and
dustproof casing.
*IP67: Fully waterproof for approximately
30 minutes in 1 meter of water.
Uses about 10% of the power compared to conventional meters. With up to 1000 hrs of use*, long periods of field work is possible.
*D-71/D-72
The compact and ergonomic design is easy to carry and includes a cable winding function with the optional electrode hook attachment.
Slim body fits in your hand. Only three basic operation buttons for one-hand operability.
The optional electrode stand offers excellent manoeuvrability, allowing the electrode to be moved up and down, and from left to right, easily with one hand.
The measurement values are easily visible on a display that is about 40% larger than those of our conventional products. Two measurement values can be displayed on a single screen.
*For selected models, an optional cable is necessary to connect to a computer.
The software can be downloaded after user registration.
The built-in data memory can store 1000 items, and connecting to a computer allows measurement data to be collected. Output to a GLP/GMP-compatible printer is also possible.
*For selected models, an optional cable is necessary to connect to a computer. The software can be downloaded after user registration.
The polycarbonate resin casing is extremely chemical resistant. It can be cleaned using alcohol.
*Resistant to alcohol, weak acid, bases and oil.
| 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 |
| 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 |
*1
Cell constant 100 m-1：0.000 mS/m～20.00 S/m
Cell constant 10 m-1：.0.0 μS/m～2.000 S/m
Cell constant 1000 m-1：0.00 mS/m～200.0 S/m
*2
Cell constant 100 m-1：0.00 Ω・m～200.0 kΩ・m
Cell constant 10 m-1：0.0 Ω・m～2.000 MΩ・m
Cell constant 1000 m-1：0.000 Ω・m～20.00 kΩ・m
*3 RS-232C cable(3014030151) and software is required. Software can be download by web registration.
If you need to connect to the USB, the adapter(RS232C⇔ USB) commercially available is required.
Please buy one that be suitable for the specifications of the PC (OS · USB Specification, etc.).
※ HORIBA will not guarantee the adapter operation.
*4 Battery life will be shorter when using optional accessories and backlight LCD is activated.
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