测量项目
pH
ORP
电导率(电阻率、浓度)
溶解氧
使用领域
上水道
食品工业
养殖/水族馆
产品特点
·采用新型数字探头
可自动识别探头信息
2ch型,可自由组合连接到每个ch的探头
· pH探头、ORP探头只能更换电极部分。
降低环境负荷和运营成本
·纤巧的设计,易于握持
·具有背光功能
·防水结构(IP67:1m、可浸泡30分钟)
·具有数据存储功能(1500个数据)
·标配USB(支持PC连接)
也可以使用USB电源(可选)
·支持连接外部打印机
检测项目pH
ORP电导率电阻率
盐度
TDS(总溶解固体)
光学式溶解氧
技术参数
| Measurement method | pH | Glass electrode method |
| ORP | Platinum electrode method | |
| Conductivity | AC 2-Electrode Method | |
| DO | Optical | |
| Temperature | Thermistor resistor | |
| Display unit | Custom LCD with backlight | |
| Measurement Item/Range | pH | pH0.000~pH14.000 |
| mV(ORP) | -2000~2000mV | |
| Conductivity | 0.1mS/m~10S/m | |
| Resistivity | 0.1 Ω•m to 10kΩ•m (converted from Conductivity) | |
| Salinity (NaCl, PSSs: Practical Salinity) TDS (total dissolved solid) | Conversion from Conductivity | |
| DO/Saturation | 0.00~20.00mg/L or 0.0 to 200.0% | |
| Temperature | 0.0~100.0℃ When using DO probes: 0.0 to 50.0℃ | |
| Display Range | pH | pH-2.000~pH16.000 |
| mV(ORP) | -2200~2200mV | |
| Conductivity (manual/automatic range switching) | 0.000~2.000mS/m (0.00~20.00μS/cm) | |
| 0.00~20.00mS/m (0.0~200.0μS/cm) | ||
| 0.0~200.0mS/m (0.000~2.000mS/cm) | ||
| 0.000~2.000S/m (0.00~20.00mS/cm) | ||
| 0.00~20.00S/m (0.0~200.0mS/cm) | ||
| Switchable between SI unit (S/m) and old unit (S/cm) | ||
| Resistivity (manual/automatic range switching) | 0.005~2.000 Ω・m (0.5~200.0Ω・cm) | |
| 0.00~20.00 Ω・m (0.000~2.000kΩ・cm) | ||
| 0.0~200.0 Ω・m (0.00~20.00kΩ・cm) | ||
| 0.000~2.000 kΩ・m (0.0~200.0kΩ・cm) | ||
| 0.00~20.00 kΩ・m (0.000~2.000MΩ・cm) | ||
| 0.0~200.0 kΩ・m (0.00~20.00MΩ・cm) | ||
| 0.000~2.000 MΩ・m (0.0~200.0MΩ・cm) | ||
| Switchable between SI unit (Ω•m) and old unit (Ω•cm) | ||
| Salinity | 0.00~4.04%(NaCl) 0.00~42.40psu(PSS) | |
| TDS (total dissolved solid) (manual/automatic range switching) | 0~99.99/ 999.9 mg/L | |
| 0~9.999/ 99.99/ 999.9 g/L | ||
| DO/Saturation | 0.00~22.00mg/L or 0.0 to 220.0% | |
| Temperature | -5.0~110.0℃ When using DO probes:-5.0 to 55.0℃ | |
| Repeatability (instrument body) | pH | ±0.006pH |
| mV(ORP) | ±2mV | |
| Conductivity/Resistivity Salinity/TDS (total dissolved solid) | ±0.5% FS | |
| DO/Saturation | When combined with 8 mg/L±0.1mg/L or 100%±1% * MM4-DDO | |
| Temperature | Within ±0.2℃ | |
| pH Temperature Compensation Range | ATC (Automatic Temperature Compensation): 0 to 100.0℃ MTC (manual Temperature Compensation): 0 to 100.0℃ | |
| Conductivity Temperature Compensation scope | ATC (Automatic Temperature Compensation): 0 to 100.0℃ MTC (manual Temperature Compensation): 0 to 100.0℃ OFF (no Temperature Compensation) | |
| Conductivity Standard Temperature Setting | Fixed at 25℃ | |
| Conductivity Temperature Coefficient (Linear) | 0~10.00%/℃ | |
| DO Temperature Compensation range | ATC (Automatic Temperature Compensation): 0 to 50.0℃ | |
| pH calibration | JIS pH standard solution, US standard solution up to 5-point calibration or custom-made standard solution up to 2-point calibration | |
| Temperature Calibration | One-point calibration | |
| Performance Guaranteed Temperature, Humidity | 0 to 45℃ 20 to 90% (non-condensing) * 0 to 40℃ when the optional External Printer is used | |
| Waterproof structure | IP67(1m, immersion allowed for 30 minutes) * Disabled when probes are not connected | |
| Data Memory | MM-42DP: each ch 1500 data (measurement times, measurement values, Temperature) | |
| (When Data Memory is operated, the measured data of ch1 and ch2 are memorized simultaneously.) MM-41DP: 1500 data (measured time, measured value, Temperature) | ||
| Calibration History Creation Function | Main unit side: Last 1 time | |
| Probe side: pH is 10 batches including the newest, and DO is 8 batches including the newest. | ||
| Interval Measurement function ※1 | Setting interval: 1 second to 99 minutes 59 seconds or 5 minutes to 99 hours 59 minutes can be arbitrarily set. | |
| Print Function | Can be connected to optional External Printer EPS-P30 (Plain Paper Print) | |
| Auto Hold Function | Stable judgment value: Fixed | |
| Auto Power Off | OFF/10 min./30 min./60 min./180 min./360 min./720 min. settable | |
| USB (peripheral, Micro) | 1 port standerd equipment (isolated) | |
| Analog output (insulate)※2 | pH | pH0~14 → 500~1900mV |
| mV(ORP) | -2000~2000mV → 200~2200mV | |
| Conductivity/Resistivity | Each range 0~FS(2000 digit)→ 200~2200 mV | |
| Salinity (NaCl equivalent) | 0.00~4.00% → 200~2200mV | |
| Salinity (PSS-78 equivalent) | 0.00~40.00psu → 200~2200mV | |
| TDS | Each range 0~FS(9999 digit)→ 200~2200 mV | |
| DO | 0.00~20.00mg/L → 200~2200mV | |
| Saturation | 0~200% → 200~2200mV | |
| Temperature | 0~100℃ → 200~2200mV | |
| Power supply | AA batteries/rechargeable nickel-metal hydride batteries 2 pcs or USB-powered (no recharging function) ※2 | |
| Battery life (estimate) | When a pH or ORP probe is connected: Approx.800 hours When a Conductivity probe is connected: Approx. 500 hours When an optical DO probe is connected: Approx. 60 hours ※2 | |
| *Backlight turns off, option not connected | ||
| Power consumption | 0.2VA (with battery 3V), 0.9VA (with USB-powered) | |
| Dimensions (projections not included) | Approx. 70 (W) × 35 (H) × 185 (D) mm | |
| Main Unit Weight (including batteries) | MM-42DP: Approx. 300g MM-41DP: Approx. 290g | |
※1 It is effective for simplified monitoring in a short time (about half a day), etc.
※2 The use of AC-USB adapter ASSY is recommended for optional analogue-output connections and for continuous-measurement with DO probes because battery life is shortened (USB-powered).