Specifications

Transmitter M300 FLOW 8

Printed in Switzerland 52 121 319

The following is a list of general safety instructions and warnings. Failure to adhere to these

instructions can result in damage to the equipment and/or personal injury to the operator.

– The M300 Transmitter should be installed and operated only by personnel familiar with the

transmitter and who are qualiﬁed for such work.

– The M300 Transmitter must only be operated under the speciﬁed operating conditions

(see section 16).

– Repair of the M300 Transmitter must be performed by authorized, trained personnel only.

– With the exception of routine maintenance, cleaning procedures or fuse replacement, as

described in this manual, the M300 Transmitter must not be tampered with or altered in any

manner.

– Mettler-Toledo accepts no responsibility for damage caused by unauthorized modiﬁcations

to the transmitter.

– Follow all warnings, cautions, and instructions indicated on and supplied with this product.

– Install equipment as speciﬁed in this instruction manual. Follow appropriate local and

national codes.

– Protective covers must be in place at all times during normal operation.

– If this equipment is used in a manner not speciﬁed by the manufacturer, the protection

provided by it against hazards may be impaired.

WARNINGS:

Installation of cable connections and servicing of this product require access to shock hazard

voltage levels.

Main power and relay contacts wired to separate power source must be disconnected before

servicing.

Switch or circuit breaker shall be in close proximity to the equipment and within easy reach

of the OPERATOR; it shall be marked as the disconnecting device for the equipment.

Main power must employ a switch or circuit breaker as the disconnecting device for the

equipment.

Electrical installation must be in accordance with the National Electrical Code and/or any other

applicable national or local codes.

RELAY CONTROL ACTION: the M300 transmitter relays will always de-energize on loss

of power, equivalent to normal state, regardless of relay state setting for powered operation.

Conﬁgure any control system using these relays with fail-safe logic accordingly.

PROCESS UPSETS: Because process and safety conditions may depend on consistent operation

of this transmitter, provide appropriate means to maintain operation during sensor cleaning,

replacement or sensor or instrument calibration.

2.2 Correct disposal of the unit

When the transmitter is ﬁnally removed from service, observe all local environmental regulations

for proper disposal.