测量项目

pH

ORP

电导�?电阻率、浓�?

溶解�?/span>

使用领域

上水遒�/span>

食品工业

养殖/水族馅�/span>

产品特点

·采用新型数字探头

可自动识别探头信�?/span>

2ch型，可自由组合连接到每个ch的探夳�/span>

· pH探头、ORP探头只能更换电极部分、�/span>

降低环境负荷和运营成�?/span>

·纤巧的设计，易于握持

·具有背光功能

·防水结构(IP67�?m、可浸泡30分钟)

·具有数据存储功能(1500个数�?

·标配USB(支持PC连接)

也可以使用USB电源(可�?

·支持连接外部打印朹�/span>

检测项�?/strong>

pH

ORP电导率电阻率

盐度

TDS(总溶解固�?

光学式溶解氧

技术参�?/strong>

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�?000mV
	Conductivity	0.1mS/m�?0S/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�?0.00mg/L or 0.0 to 200.0%
	Temperature	0.0�?00.0� When using DO probes: 0.0 to 50.0ℂ�/span>
Display Range	pH	pH-2.000～pH16.000
	mV(ORP)	-2200�?200mV
	Conductivity (manual/automatic range switching)	0.000�?.000mS/m (0.00�?0.00μS/cm)
		0.00�?0.00mS/m (0.0�?00.0μS/cm)
		0.0�?00.0mS/m (0.000�?.000mS/cm)
		0.000�?.000S/m (0.00�?0.00mS/cm)
		0.00�?0.00S/m (0.0�?00.0mS/cm)
		Switchable between SI unit (S/m) and old unit (S/cm)
	Resistivity (manual/automatic range switching)	0.005�?.000 Ω?m (0.5�?00.0Ω?cm)
		0.00�?0.00 Ω?m (0.000�?.000kΩ?cm)
		0.0�?00.0 Ω?m (0.00�?0.00kΩ?cm)
		0.000�?.000 kΩ?m (0.0�?00.0kΩ?cm)
		0.00�?0.00 kΩ?m (0.000�?.000MΩ?cm)
		0.0�?00.0 kΩ?m (0.00�?0.00MΩ?cm)
		0.000�?.000 MΩ?m (0.0�?00.0MΩ?cm)
		Switchable between SI unit (Ω?m) and old unit (Ω?cm)
	Salinity	0.00�?.04%(NaCl) 0.00�?2.40psu(PSS)
	TDS (total dissolved solid) (manual/automatic range switching)	0�?9.99/ 999.9 mg/L
		0�?.999/ 99.99/ 999.9 g/L
	DO/Saturation	0.00�?2.00mg/L or 0.0 to 220.0%
	Temperature	-5.0�?10.0� When using DO probes:-5.0 to 55.0ℂ�/span>
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 ±0.2ℂ�/span>
pH Temperature Compensation Range		ATC (Automatic Temperature Compensation): 0 to 100.0ℂ�br/>MTC (manual Temperature Compensation): 0 to 100.0ℂ�/span>
Conductivity Temperature Compensation scope		ATC (Automatic Temperature Compensation): 0 to 100.0ℂ�br/>MTC (manual Temperature Compensation): 0 to 100.0ℂ�br/>OFF (no Temperature Compensation)
Conductivity Standard Temperature Setting		Fixed at 25ℂ�/span>
Conductivity Temperature Coe?cient (Linear)		0�?0.00%/ℂ�/span>
DO Temperature Compensation range		ATC (Automatic Temperature Compensation): 0 to 50.0ℂ�/span>
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 �?		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 O?		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)�?	pH	pH0�?4 � 500�?900mV
	mV(ORP)	-2000�?000mV � 200�?200mV
	Conductivity/Resistivity	Each range 0～FS(2000 digit)� 200�?200 mV
	Salinity (NaCl equivalent)	0.00�?.00% � 200�?200mV
	Salinity (PSS-78 equivalent)	0.00�?0.00psu � 200�?200mV
	TDS	Each range 0～FS(9999 digit)� 200�?200 mV
	DO	0.00�?0.00mg/L � 200�?200mV
	Saturation	0�?00% � 200�?200mV
	Temperature	0�?00� � 200�?200mV
Power supply		AA batteries/rechargeable nickel-metal hydride batteries 2 pcs or USB-powered (no recharging function) �?
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 �?
＊Backlight turns o?, 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

�? It is effective for simplified monitoring in a short time (about half a day), etc.

�? The use of AC-USB adapter ASSY is recommended for optional analogue-output connections and for continuous-measurement with DOprobes because battery life is shortened (USB-powered).