M300 Transmitter Series
for pH, Oxygen and Conductivity
Easy to use and versatile
Short description
The M300 transmitter line for pH/ORP, oxygen, and conductivity measurements combines robustness with
ease of use. Its versatility and solid measurement performance makes it the ideal choice for light industrial
applications. The M300 transmitters are designed for comfortable operation: from the large display to the
easily accessible wiring terminals to the plain text interface and quick setup menu. With its innovative USB port,
the M300 is open to the future- for remote configuration, data logging or software upgrade.
Features
4-wire Installation
Two 0/4 … 20 mA current outputs, galvanically isolated
4 freely configurable relays
Manual control of relay contacts
IP 65 rated (Front only for ¼ DIN version)
PID controller with pulse length, pulse frequency or analog control
Password protection against accidental parameter changes
Large, backlit display with 4 text lines
Quick setup mode
Single or dual channel
5 languages: english, german, French, Italian, spanish
AC/DC power supply
2-channel version: each channel is user-confugurable
Specifications
M300 pH transmitter
Measurement parameters	pH, mV, and temperature
pH, ORP Input range	-1500 to 1500 mV
pH display range	-1 to 15 pH
Resolution	0.01 pH; 1 mV
Relative accuracy	+/-0.03 pH; +/-2 mV
Temperature input	Pt1000 (Pt100 with adapter)
Temperature compensation	Automatic/ manual
Temperature measuring range	-30 to 150๐C (-22 to 302๐F)
Temperature resolution	0.1๐C/๐F
Temperature measurement error	+/-0.25๐C (+/-0.45๐F)
Calibration	1 or 2 point calibration, process calibration