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pH

ORP

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pH

ORP鐢靛鐜囩數闃荤巼

鐩愬害

TDS(鎬绘憾瑙ｅ浐浣?

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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锝瀙H14.000
	mV(ORP)	-2000锝?000mV
	Conductivity	0.1mS/m锝?0S/m
	Resistivity	0.1 惟?m to 10k惟?m (converted from Conductivity)
	Salinity (NaCl, PSSs: Practical Salinity) TDS (total dissolved solid)	Conversion from Conductivity
	DO/Saturation	0.00锝?0.00mg/L or 0.0 to 200.0%
	Temperature	0.0锝?00.0鈩 When using DO probes: 0.0 to 50.0鈩傸/span>
Display Range	pH	pH-2.000锝瀙H16.000
	mV(ORP)	-2200锝?200mV
	Conductivity (manual/automatic range switching)	0.000锝?.000mS/m (0.00锝?0.00渭S/cm)
		0.00锝?0.00mS/m (0.0锝?00.0渭S/cm)
		0.0锝?00.0mS/m (0.000锝?.000mS/cm)
		0.000锝?.000S/m (0.00锝?0.00mS/cm)
		0.00锝?0.00S/m (0.0锝?00.0mS/cm)
		Switchable between SI unit (S/m) and old unit (S/cm)
	Resistivity (manual/automatic range switching)	0.005锝?.000 惟?m (0.5锝?00.0惟?cm)
		0.00锝?0.00 惟?m (0.000锝?.000k惟?cm)
		0.0锝?00.0 惟?m (0.00锝?0.00k惟?cm)
		0.000锝?.000 k惟?m (0.0锝?00.0k惟?cm)
		0.00锝?0.00 k惟?m (0.000锝?.000M惟?cm)
		0.0锝?00.0 k惟?m (0.00锝?0.00M惟?cm)
		0.000锝?.000 M惟?m (0.0锝?00.0M惟?cm)
		Switchable between SI unit (惟?m) and old unit (惟?cm)
	Salinity	0.00锝?.04%(NaCl) 0.00锝?2.40psu(PSS)
	TDS (total dissolved solid) (manual/automatic range switching)	0锝?9.99/ 999.9 mg/L
		0锝?.999/ 99.99/ 999.9 g/L
	DO/Saturation	0.00锝?2.00mg/L or 0.0 to 220.0%
	Temperature	-5.0锝?10.0鈩 When using DO probes:-5.0 to 55.0鈩傸/span>
Repeatability (instrument body)	pH	卤0.006pH
	mV(ORP)	卤2mV
	Conductivity/Resistivity Salinity/TDS (total dissolved solid)	卤0.5% FS
	DO/Saturation	When combined with 8 mg/L卤0.1mg/L or 100%卤1% * MM4-DDO
	Temperature	Within 卤0.2鈩傸/span>
pH Temperature Compensation Range		ATC (Automatic Temperature Compensation): 0 to 100.0鈩傸br/>MTC (manual Temperature Compensation): 0 to 100.0鈩傸/span>
Conductivity Temperature Compensation scope		ATC (Automatic Temperature Compensation): 0 to 100.0鈩傸br/>MTC (manual Temperature Compensation): 0 to 100.0鈩傸br/>OFF (no Temperature Compensation)
Conductivity Standard Temperature Setting		Fixed at 25鈩傸/span>
Conductivity Temperature Coe?cient (Linear)		0锝?0.00%/鈩傸/span>
DO Temperature Compensation range		ATC (Automatic Temperature Compensation): 0 to 50.0鈩傸/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鈩 20 to 90% (non-condensing) * 0 to 40鈩 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 鈥?		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)鈥?	pH	pH0锝?4 鈫 500锝?900mV
	mV(ORP)	-2000锝?000mV 鈫 200锝?200mV
	Conductivity/Resistivity	Each range 0锝濬S(2000 digit)鈫 200锝?200 mV
	Salinity (NaCl equivalent)	0.00锝?.00% 鈫 200锝?200mV
	Salinity (PSS-78 equivalent)	0.00锝?0.00psu 鈫 200锝?200mV
	TDS	Each range 0锝濬S(9999 digit)鈫 200锝?200 mV
	DO	0.00锝?0.00mg/L 鈫 200锝?200mV
	Saturation	0锝?00% 鈫 200锝?200mV
	Temperature	0锝?00鈩 鈫 200锝?200mV
Power supply		AA batteries/rechargeable nickel-metal hydride batteries 2 pcs or USB-powered (no recharging function) 鈥?
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 鈥?
锛夿acklight turns o?, option not connected
Power consumption		0.2VA (with battery 3V), 0.9VA (with USB-powered)
Dimensions (projections not included)		Approx. 70 (W) 脳 35 (H) 脳 185 (D) mm
Main Unit Weight (including batteries)		MM-42DP: Approx. 300g MM-41DP: Approx. 290g

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

鈥? 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).