YOKOGAWA EJA Series Differential Pressure and Pressure Transmitters

For Safe Use of Product

For the protection and safety of the operator and the

instrument or the system including the instrument, please

be sure to follow the instructions on safety described

in this manual when handling this instrument. In case

the instrument is handled in contradiction to these

instructions, Yokogawa does not guarantee safety.

Please give your attention to the followings.

(a) Installation

• The instrument must be installed by an expert

engineer or a skilled personnel. The procedures

described about INSTALLATION are not permitted for

operators.

• In case of high process temperature, care should

be taken not to burn yourself because the surface of

body and case reaches a high temperature.

• The instrument installed in the process is under

pressure. Never loosen the process connector bolts

to avoid the dangerous spouting of process fl uid.

• During draining condensate from the pressure

detector section, take appropriate care to avoid

contact with the skin, eyes or body, or inhalation of

vapors, if the accumulated process fl uid may be toxic

or otherwise harmful.

• When removing the instrument from hazardous

processes, avoid contact with the fl uid and the interior

of the meter.

• All installation shall comply with local installation

requirement and local electrical code.

(b) Wiring

• The instrument must be installed by an expert

engineer or a skilled personnel. The procedures

described about WIRING are not permitted for

operators.

• Please confi rm that voltages between the power

supply and the instrument before connecting the

power cables and that the cables are not powered

before connecting.

(c) Operation

• Wait 10 min. after power is turned off, before opening

the covers.

(d) Maintenance

• Please do not carry out except being written to

maintenance descriptions. When these procedures

are needed, please contact nearest YOKOGAWA

offi ce.

• Care should be taken to prevent the build up of drift,

dust or other material on the display glass and name

plate. In case of its maintenance, soft and dry cloth is

used.

(e) Explosion Protected Type Instrument

• Users of explosion proof instruments should refer fi rst

to section 2.4 (Installation of an Explosion Protected

Instrument) of this manual.

• The use of this instrument is restricted to those who

have received appropriate training in the device.

• Take care not to create sparks when accessing the

instrument or peripheral devices in a hazardous

location.

(f) Modifi cation

• Yokogawa will not be liable for malfunctions or

damage resulting from any modifi cation made to this

instrument by the customer.

Warranty

• The warranty shall cover the period noted on the

quotation presented to the purchaser at the time of

purchase. Problems occurred during the warranty

period shall basically be repaired free of charge.

• In case of problems, the customer should contact the

Yokogawa representative from which the instrument

was purchased, or the nearest Yokogawa offi ce.

• If a problem arises with this instrument, please inform

us of the nature of the problem and the circumstances

under which it developed, including the model

specifi cation and serial number. Any diagrams,

data and other information you can include in your

communication will also be helpful.

• Responsible party for repair cost for the problems

shall be determined by Yokogawa based on our

investigation.

• The Purchaser shall bear the responsibility for

repair costs, even during the warranty period, if the

malfunction is due to:- - - - - -

Improper and/or inadequate maintenance by the

purchaser.

Failure or damage due to improper handling, use

or storage which is out of design conditions.

Use of the product in question in a location

not conforming to the standards specifi ed by

Yokogawa, or due to improper maintenance of the

installation location.

Failure or damage due to modifi cation or repair

by any party except Yokogawa or an approved

representative of Yokogawa.

Malfunction or damage from improper relocation of

the product in question after delivery.

Reason of force majeure such as fi res,

earthquakes, storms/fl oods, thunder/lightening,

or other natural disasters, or disturbances, riots,

warfare, or radioactive contamination.