This Multi-Purpose Water Meter can Measure Dissolved Oxygen (DO) , pH, Conductivity, TDS, Salinity or Temperature Using Different Probes.

The kit includes includes one DO probe. Additional probes (optional) also allow it to operate as a highly accurate pH meter, Conductivity meter, TDS meter, Salinity meter or DO meter as desired.

Probes change are easily changed and include specially designed guards to prevent tip damage. This meter is the ideal tool for numerous professional water testing applications including: aquaculture, laboratories, swimming pools, spas and water treatment facilities.

• Large, backlit LCD can display multiple parameters including: pH, Conductivity, TDS, Salinity, Dissolved Oxygen, Temperature
  (using different probes)
• Displayed parameter is determined by probe type
• Green backlight for dark environment
• Fast measuring of Dissolved Oxygen value
• Accurate, replaceable probes with safety caps
• Auto ranging conductivity measurement
• Auto temperature compensation (ATC)
• 99 points memories w/recall function
• Multiple points calibration: 3 points for pH, 1 point for DO, 4 points for conductivity
• Manually altitude and salinity compensation function for DO measurement
• Available replacement probes
• Temperature unit ℃/℉ is switchable
• 1 hour auto power off

#850048DOK Kit includes: Combo Meter, DO Probe, (2) Heads, Battery, Manual, Hard Carry Case 

Specifications

Downloads

Instruction Manual

Compare Sper Scientific Dissolved Oxygen (DO) Meters

Model Number	850045	850048DOK	850081DOK	860055	860067	860073
Product Name	Waterproof DO Meter Pen	Combination Water Meter Kit w/ DO Probe	Dissolved Oxygen Meter Kit	Rechargeable DO Pen w/ 5 Meter Cable	Optical Dissolved Oxygen Meter	Portable Optical Dissolved Oxygen Meter
DO Range (% Saturation)	0–100% O₂ in air	0–200%	0–100.0%	0.0–199.9%	0.0–200.0%	0-200%
DO Range (mg/L)	0–20.0 mg/L	0–20.0 mg/L	0–20 mg/L	0.00–20.00 mg/L	0.0–20.0 mg/L	0 -20 mg/L
DO Accuracy (mg/L)	±0.4 mg/L	±0.4 mg/L	±0.4 mg/L	±0.4 mg/L	<5: ±0.3 mg/L≥5: ±0.4 mg/L	±0.3mg/L
DO Resolution (mg/L)	0.1 mg/L	0.1 mg/L	0.1 mg/L	0.01 mg/L	0.1 mg/L	0.01mg/L
DO Accuracy (%)	±0.7% O₂	±2% F.S.	±0.7% O₂	±3% F.S.	±3% of Full Scale	±3%
DO Resolution (%)	0.10%	0.10%	0.10%	0.10%	0.10%	0.10%
Temp. Range	0–50°C / 32–122°F	0–50°C / 32–122°F	0–50°C / 32–122°F	0–50.0°C / 32–122°F	0–40.0°C / 32–104°F	0°–45°C / 32°–113°F
Temp. Accuracy	±0.8°C / 1.5°F	±0.5°C / 0.9°F	±0.8°C / ±1.5°F	±0.5°C / 0.9°F	±0.5°C (0.9°F)	±0.5°C / 0.9°F
Temp. Resolution	0.1°C	0.1°C	0.1°C	0.1°C	0.1°C	0.1°C
Auto Temp. Comp. (ATC)	√	√	√	10–40°C	0–40°C	√
Salinity Resolution				0.1 ppt	0.1 ppt
Barometric Pressure Comp.		Manual (altitude)	Manual (altitude)	500–760 mmHg(66.7–101.3 kPa)	Manual, 50–115 kPa	Manual (altitude)
DO Calibration	1-Point (air)	1-Point (air)	1-Button (air)	1-Point (100% air)	2-Point (0% & 100%)	2-Point (0% & 100%)
Probe Technology	Polarographic DO probe	Polarographic DO probe	Polarographic DO probe	Polarographic DO probe	Optical (fluorescent) DO probe	Optical (fluorescent) DO probe
Sensor Warmup Time	~30 min (cal.)	~30 min (cal.)		<60 seconds	None	~10 min (cal.)
Sensor Response Time				<30 seconds	Fast
Sensor/Probe Lifetime				>6 months	>1 year	>1 year
Measures pH		(optional probe)	(optional probe)
Measures ORP / mV			(optional probe)
Measures Conductivity/TDS		(optional probe)	(optional probe)
Measures Salinity	Via compensation	(optional probe)	(optional probe)	Via compensation	Via compensation	Via compensation
Memory / Data Storage	Max/Min record	99 memory points			99 memory points	+100,000 memory points
RS232 / Data Output			RS232			USB
Display Type	Dual LCD	Large backlit LCD	Backlit LCD	Backlit LCD	Large LCD	Large LCD
Simultaneous DO & Temp.	√	√	√	√	√	√
Backlight		√	√	√		√
Battery Type	(4) AAA	(4) AAA	9V	3.7V 500mAh Rechargeable Li-ion	(6) AAA	Rechargeable Li-ion
Charging				USB Type-C(~1.5 hr)		USB
IP Rating	IP-67				IP-67	IP-67 Housing / IP-68 Sensor
Spare Probe Heads	2 spare probe heads	2 spare probe heads	2 spare probe heads	2 spare probe heads
Electrolyte Solution	√	√	√	√