Jump to content Jump to navigation menu

€2,195.00/Pack Qty. 

excl. VAT. | 1 unit(s) per Pack Qty.

Art. No. 1XXK.1

In procurement
from 6 Pack Qty. €2,085.25/Pack Qty.
from 24 Pack Qty. €1,975.50/Pack Qty.

Product details

For determining pH/Redox and conductivity/salinity/TDS.

  • Single/dual mode: Single measurement or simultaneous measurement of pH and conductivity is possible
  • Large colour touchscreen (7″) for straightforward data input and direct measurements
  • Simple and intuitive operation. On-screen instructions provide step-by-step guidance through the programs (e. g. sensor calibration).
  • Screen display can be adjusted for specific requirements. Full-screen mode displays all information, while the details screen only shows the most important measurement information with large digits.
  • Calibration can be performed with predefined and user-specific buffers and buffer groups. Calibration memory with optional sensor lock setting available. Quality of the most recent sensor calibration shown directly via pH sensor symbol. Verification mode enables checking of the current sensor status.
  • Electrode arm can be operated easily with one hand. Simple and safe electrode handling via specific positions for cleaning and storage. Precise positioning via vertical and horizontal movements.
  • Traceable documentation. With each measurement, data such as the timestamp or sample and sensor ID is saved and automatically printed or exported.
  • Two-level user management (administrator, operator) prevents unwanted changes to device settings
  • Internal measurement data memory: save by pressing a key or with time-controlled measuring intervals
  • Intelligent Sensor Management (ISM®) for automatic recognition of ISM® sensors and reading in calibration data

Combi table-top multimeter SevenDirect™ SD23 Basic 

Delivery incl. electrode holder and protective casing.

Without sensors, please order separately.
Technical Information
Type SD23 Basic 
Sensor without 
Parameters pH 
pH measuring range -2 to +20 
pH resolution 0,001 / 0,01 / 0,1 pH 
pH accuracy ±0.002 pH 
Voltage measuring range -2000 to +2000 mV
Voltage resolution 0,1 / 1 mV
Voltage accuracy ±0,2 mV
Conductivity measuring range 0 µS/cm to 2000 mS/cm mS/cm
Conductivity resolution automatic: 0.1 / 0.01 / 0.001 (μS/cm, mS/cm) 
Conductivity accuracy ±0.5% of the measured value 
TDS measuring range 0 mg/l to 1000 g/l ppm
TDS resolution automatic: 0.1 / 0.01 / 0.001 (mg/l, ppm) or 0.1 / 0.01 / 0.001 / 0.0001 (g/l, ppt) 
TDS accuracy ±0.5% of the measured value 
Salinity measuring range 0 to 80 psu
Salinity resolution 0.01 / 0.1 psu 
Salinity accuracy ±0.5% of the measured value 
Temperature measuring range -30 to +130 °C
Temperature resolution 0.1 °C 
Temperature accuracy ±0.1 °C (0.0 to 100.0 °C) 
±0.3 °C (outside) 
Calibration points 1/2/3/4/5 (pH)

1/2 (EC) 
Data memory 2000 datasets 
Port USB-A (USB stick, printer, barcode reader), USB-B (PC) 
Connection BNC (pH) 
Mini-DIN (EC) 
Cinch (°C) 
ISM Technology yes 
IP rating 54 
Power supply mains adapter 
Mains connection 100-240 V, 50/60 Hz 
Combi table-top multimeter SevenDirect™ SD23 Basic
Selected quantity:   0
  1. Subtotal:  0.00
Art. No. Pack Qty. Price Quantity
1XXK.1 1 unit(s) 


In stock
In procurement
No longer available
Delivery date currently unknown
Selected quantity:   0
  1. Subtotal:  0.00

Downloads / MSDS

General information

The redox potential can be measured with a pH meter,which can display mV values.A redox probe is needed for this.