| Conductivity | Common to all modelsRange · Standard · CON-1: 2μs/cm~20000μs/cm · CON-1: 2μs/cm~20000μs/cm · CON-1: 2μs/cm~20000μs/cm · CON-1: 2μs/cm~20000μs/cm |
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| Conductivity (2) | Common to all modelsRange · Optional · CON-0.01: 0.01μs/cm~0.1μs/cm CON-0.1: 0.1μs/cm~2μs/cm CON-10: 20000μs/cm~200ms/cm · CON-0.01: 0.01μs/cm~0.1μs/cm CON-0.1: 0.1μs/cm~2μs/cm CON-10: 20000μs/cm~200ms/cm · CON-0.01: 0.01μs/cm~0.1μs/cm CON-0.1: 0.1μs/cm~2μs/cm CON-10: 20000μs/cm~200ms/cm · CON-0.01: 0.01μs/cm~0.1μs/cm CON-0.1: 0.1μs/cm~2μs/cm CON-10: 20000μs/cm~200ms/cm |
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| Conductivity (3) | Common to all modelsAccuracy · ±0.5% F.S. · ±0.5% F.S. · ±0.5% F.S. · ±0.5% F.S. |
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| Conductivity (4) | Common to all modelsResolution · 0.001, 0.01, 0.1, 1 · 0.001, 0.01, 0.1, 1 · 0.001, 0.01, 0.1, 1 · 0.001, 0.01, 0.1, 1 |
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| Conductivity (5) | Common to all modelsCalibration Points · 1 to 3 points(PH-520), 1 to 5 points(PH- 530/531/540) · 1 to 3 points(PH-520), 1 to 5 points(PH- 530/531/540) · 1 to 3 points(PH-520), 1 to 5 points(PH- 530/531/540) · 1 to 3 points(PH-520), 1 to 5 points(PH- 530/531/540) |
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| Conductivity (6) | Common to all modelsCalibration Solutions · 10μS/cm, 84pS/cm, 1413pS/cm, 12.88mS/cm, 111.8mS/cm · 10μS/cm, 84pS/cm, 1413pS/cm, 12.88mS/cm, 111.8mS/cm · 10μS/cm, 84pS/cm, 1413pS/cm, 12.88mS/cm, 111.8mS/cm · 10μS/cm, 84pS/cm, 1413pS/cm, 12.88mS/cm, 111.8mS/cm |
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| TDS | Common to all modelsRange · / · 0~10.00, 100.0, 1000ppm, 10.00, 200.0ppt · / · 0~10.00, 100.0, 1000ppm, 10.00, 200.0ppt |
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| TDS (2) | Common to all modelsAccuracy · / · ±1%F.S. · / · ±1%F.S. |
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| TDS (3) | Common to all modelsResolution · / · 0.01, 0.1, 1 · / · 0.01, 0.1, 1 |
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| TDS (4) | Common to all modelsTDS Factor · / · 0.1~1.0(default 0.5) · / · 0.1~1.0(default 0.5) |
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| Salinity | Common to all modelsRange · / · / · 0.00~42.00psu, 0.00~80.00ppt · 0.00~42.00psu, 0.00~80.00ppt |
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| Salinity (2) | Common to all modelsAccuracy · / · / · ±1% F.S. · ±1% F.S. |
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| Salinity (3) | Common to all modelsResolution · / · / · 0.01 · 0.01 |
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| Resistivity | Common to all modelsRange · / · / · / · 0.00~20.00MΩ |
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| Resistivity (2) | Common to all modelsAccuracy · / · / · / · ±1% F.S. |
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| Resistivity (3) | Common to all modelsResolution · / · / · / · 0.01 |
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| Temperature — Range | Common to all models0~105°C/32~221°F |
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| Temperature — Accuracy | Common to all models±0.5°C/±0.9°F |
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| Temperature — Resolution | Common to all models0.1°C/0.1°F |
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| Temperature — Offset Calibration | Common to all models1 point, reading ±10°C |
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| Other Specifications | Common to all modelsTemperature Compensation · 0~100°C, manual or automatic · 0~100°C, manual or automatic · 0~100°C, manual or automatic · 0~100°C, manual or automatic |
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| Other Specifications (2) | Common to all modelsTemperature Coefficient · Linear(0.0~10.0%/°C), non-linear, pure water · Linear(0.0~10.0%/°C), non-linear, pure water · Linear(0.0~10.0%/°C), non-linear, pure water · Linear(0.0~10.0%/°C), non-linear, pure water |
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| Other Specifications (3) | Common to all modelsReference Temperature · 20/25°C · 20/25°C · 20/25°C · 20/25°C |
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| Other Specifications (4) | Common to all modelsCell Constant · K=0.1, 1, 10 · K=0.1, 1, 10 · K=0.1, 1, 10 · K=0.1, 1, 10 |
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| Other Specifications (5) | Common to all modelsStability Criteria · / · Low or high · Low or high · Low or high |
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| Other Specifications (6) | Common to all modelsCalibration Due Alarm · / · 1 to 31 days or off · 1 to 31 days or off · 1 to 31 days or off |
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| Other Specifications (7) | Common to all modelsHold Function · Manual or auto-endpoint · Manual or auto-endpoint · Manual or auto-endpoint · Manual or auto-endpoint |
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| Other Specifications (8) | Common to all modelsAuto-Off · 30 minutes after last key pressed(PH-520), 10, 20 or 30 minutes after last key pressed(PH-530/531/540) · 30 minutes after last key pressed(PH-520), 10, 20 or 30 minutes after last key pressed(PH-530/531/540) · 30 minutes after last key pressed(PH-520), 10, 20 or 30 minutes after last key pressed(PH-530/531/540) · 30 minutes after last key pressed(PH-520), 10, 20 or 30 minutes after last key pressed(PH-530/531/540) |
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| Other Specifications (9) | Common to all modelsMemory · 100 data sets(PH-520), 500 data sets(PH-530/531/540) · 100 data sets(PH-520), 500 data sets(PH-530/531/540) · 100 data sets(PH-520), 500 data sets(PH-530/531/540) · 100 data sets(PH-520), 500 data sets(PH-530/531/540) |
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| Other Specifications (10) | Common to all modelsCommunication Interface · USB · USB · USB · USB |
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| Other Specifications (11) | Common to all modelsConnector · 6-pin mini-DIN, 3.5mm jack socket · 6-pin mini-DIN, 3.5mm jack socket · 6-pin mini-DIN, 3.5mm jack socket · 6-pin mini-DIN, 3.5mm jack socket |
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| Other Specifications (12) | Common to all modelsDisplay · Custom LCD(80*60mm) · Custom LCD(80*60mm) · Custom LCD(80*60mm) · Custom LCD(80*60mm) |
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| Other Specifications (13) | Common to all modelsPower Requirements · 3*1.5V AA batteries or DC5V power adapter · 3*1.5V AA batteries or DC5V power adapter · 3*1.5V AA batteries or DC5V power adapter · 3*1.5V AA batteries or DC5V power adapter |
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| Other Specifications (14) | Common to all modelsBattery Life · Approximately 150 hours(Turn off the backlight) · Approximately 150 hours(Turn off the backlight) · Approximately 150 hours(Turn off the backlight) · Approximately 150 hours(Turn off the backlight) |
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| Other Specifications (15) | Common to all modelsDimensions(mm) · 170*85*30 · 170*85*30 · 170*85*30 · 170*85*30 |
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| Other Specifications (16) | Common to all modelsWeight(kg) · 300g · 300g · 300g · 300g |
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| Other Specifications (17) | Common to all modelsPackage Size(W*D*H)mm · 475*155*350 · 475*155*350 · 475*155*350 · 475*155*350 |
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| Other Specifications (18) | Common to all modelsGross Weight(kg) · 2kg · 2kg · 2kg · 2kg |
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