-Measuring Method: 

 +pH: Glass electrode method; 

 +DO: Membrane type galvanic cell

-Display: Custom LCD (simultaneous display of dual channel measured data)

-Sensor connection:

 +CH1: DO

 +CH2: pH、ORP

-Meas. Range: 

 +pH: 0.00-14.00

 +ORP: 0-±2000mV

 +Temperature: 0-100.0℃

[If standard membrane is used] 

 +DO: 0-20.00mg/L

 +Saturation rate: 0-200%

 +Temperature: 0-50.0℃

[If high concentration membrane is used] 

 +DO: 0-50.0mg/L

 +Saturation rate: 0-500%

 +Temperature: 0-50.0℃

-Display Range: 

 +pH: -2.00-16.00

 +ORP: 0-±2200mV

[If standard membrane is used] 

 +DO: 0-22.00mg/L

 +Saturation rate: 0-220%

[If high concentration membrane is used] 

 +DO: 0-55.0mg/L

 +Saturation rate: 0-550%

 +Temperature: -5-110.0℃

-Repeatability (Main unit):  

 +pH: ±0.02pH 

 +ORP: ±2mV

[If standard membrane is used] 

 +DO: ±0.03mg/L

 +Saturation rate: ±2% [If high concentration membrane is used]

 +DO: ±0.2mg/L

 +Saturation rate: ±2%

 +Temperature: ±0.2℃

-Temperature compensation: 

 +pH: Auto/Manual 

 +DO: Auto

 +Not applied to ORP

-Calibration:

 +pH : Capable of three- point calibration

 +DO : Zero/span calibration

-Temperature Calibration: One-point calibration

Correction function (Called by Key Input): (DO) Salinity correction Atmospheric pressure correction

-Data Memory: 1000 data points

-Auto Hold Function: Provided (Stability  threshold  : Fixed)

-Clock Function: Provided (To be shown while conducting a measurement)

-Interval Memory Function: Provided (Interval: The interval can be specified between 1 sec.-99 min. 59 sec. or 2 sec.-99hr. 59 min.)

-Printing Function: Can connect the external printer EPS-P30 (option)

-RS-232C Interface （non-isolated）:

 +Connectable Devices: PC or external printer EPS-P30 (option)

 +Communication Specifications: Communication system: Start-stop synchronous method; Baud rate: 19,200 bps;

 Character length: 8 bits; Parity: None; Stop bit: 1 bit

-Analog Output （non-isolated）: 

 +Number of Outputs/Items: 

  ch1: Number of outputs: 2 Measured value and temperature

  ch2: Number of outputs: 2 Measured value and temperature

 +Output Specification: pH: ±700mV (pH0-14); ORP: ±1V (0-±2000mV); DO/saturation rate: 0-1V FS (each range); Temperature: 0-1V (0-100℃ )

-Waterproof Construction: IP67 (Enabled if the sensor is connected and if the external I/O portions are masked) (Can be immersed in water for 1m and 30 min.)

-Performance Compensation Temperature: 0-45℃

-Power Source: AA alkaline battery/nickel-hydrogen battery (2 pieces) or special AC adapter (6VA option)

-Power Consumption(If 3 volt battery is used)＊2: Approx. 0.014W

-Battery Life: Approx. 400hours

-Outside Dimensions: Approx. 68 (w) x 35 (h) x 173  (d)  mm

-Mass (Including Batteries): Approx. 300g

-Inluding:

+ Main unit

+ DO Sensor: OE-270AA

+ pH Sensor: GST-2729C

+ Standard solution pH 6.86, 100mL

+ Standard solution pH 6.86, 100mL

+ Internal filling solution 50mL

+ Beakers (3 pcs)

+ Hand strap: OTZ00006

+ AA battery (2pcs)

+ Connector protective cap: OTD00001

+ Manual