Benchtop pH meters SevenDirect™ SD20 Basic

Technical Data Sheet

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Benchtop pH meters SevenDirect™ SD20 Basic

From Mettler-Toledo

Fits to / Accessories

For determining pH/Redox.

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.

Delivery incl. electrode holder and protective casing.

Without pH single-rod measuring cell, please order separately.

Technical Information

Type	SD20 Basic
Sensor	without
Parameters	pH redox temperature
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
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)
Temperature sensor	NTC 30 kΩ, pt 1000
Calibration points	1/2/3/4/5 (pH)
Calibration memory	current calibration (incl. date and time)
Data memory	2000 datasets
Port	USB-A (USB stick, printer, barcode reader), USB-B (PC)
ISM Technology	yes
IP rating	54
Connection	BNC (pH), Cinch (°C)
L x W x H	205 x 195 x 65 mm
Power supply	mains adapter
Mains connection	100-240 V, 50/60 Hz