Specifications

Transmitter O
2
M300 58
© 05/07 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter O
2
M300
Printed in Switzerland 52 121 305
16 Specifications
16.1 General specifications
Watchdog time-out SW/System fault
Error O
2
Slope > 110 nA Slope too big
Error O
2
Slope < 30 nA Slope too small
Error O
2
ZeroPt > 0.6 nA Zero offset too big
Error O
2
ZeroPt < –0.6nA Zero offset too small
Sensor type InPro 6800/6050
Measuring current 25 to 130 nA at 25 °C (77°F), 1 bar (14.5 psi)
Saturation range 0 to 500%
Concentration range 0.00 to 20.00 ppm (mg/l)
Measuring error ±0.5% of full scale reading
Measurement resolution 30pA
Temperature input NTC 22 kΩ
Temperature compensation Automatic
Temperature measuring range –10 to 80 °C (14 to 176 °F)
Calibration 1-point (slope or offset calibration)
Process calibration (slope or offset calibration)
16.2 Electrical specifications for 1/2DIN and 1/4DIN versions
Power requirements 100 to 240 V AC or 20 to 30 V DC
Frequency 50 to 60 Hz
Signal output two 0/4 to 22 mA outputs for pH/mV and temperature,
galvanically isolated
Measurement Error through
analog outputs
< ±0.05 mA over 1 to 20 mA range,
< ±0.10 mA over 0 to 1 mA range
Analog output configuration Linear, Bi-Linear, Logarithmic, Autoranging
Load Max. 500 Ω
Connection terminals Detachable screw terminals
Digital communication USB port, Type B connector
PID process controller Pulse length, frequency or analog control
Connection terminals Detachable screw terminals
Digital Input 1
Mains fuse 1.0A slow blow type FC
Relays 2-SPDT mechanical rated at 250VAC, 3Amps
2-Reed rated at 250VAC or DC, 0.5Amp switching
Alarm Relay delay 0–999 s
Keypad 5 tactile feedback keys
Display four-line