Analogue Instruments

DIN Panel Meters

Page 1 of 2

Ref: DIN – Rev 1 – Sept 02

INSTALLATION INSTRUCTIONS

The product should be panel mounted using the mounting

hardware supplied. Consideration should be given to the

space behind the unit to allow for bends in the connecting

cables. The terminals on the meter rear should be

protected from liquids.

The unit must not be mounted where it can be subjected

to direct sunlight, and vibration should be kept to a

minimum. Connection wires must be sized to comply with

local regulations and must be terminated on tags suitable

for screw connection. The product has no internal fuse,

therefore; external fuses must be used for safety

protection under fault conditions.

SAFETY INSTALLATION FOR COMPLIANCE TO

SAFTEY STANDARDS

WARNING

•

During normal operation, voltages hazardous to life

may be present at some of the terminals of this unit.

Installation and servicing should be performed only

by qualified, properly trained personnel' abiding by

local regulations. Ensure all supplies are de-

energised before attempting connection or other

procedures.

•

Terminals should not be user accessible after

installation and external installation provisions must

be sufficient to prevent hazards under fault

conditions.

•

Never open circuit the secondary winding of an

energised current transformer.

SAFETY STANDARDS

This product complies with:

International standard: IEC1010-1

For UK: BS EN 61010-1 (IEC1010-1)

Fusing and connections

This unit must be fitted with external fuses in voltage

supply lines.

Voltage input lines must be fused with a

quick blow fuse 1A maximum. Choose fuses of a type

and with a breaking capacity appropriate to the supply

and in accordance with local regulations.

SAFETY SPECIFICATION

installation.

80% for temperature up to 31º C decreasing linearly to

50% RH at 40ºC

accuracy 0-40ºC

Electromagnetic Compatibility

This unit has been designed to provide protection against EM

(electro-magnetic) interference in line with requirements of

EU and other regulations. Precautions necessary to provide

proper operation of this and adjacent equipment will be

installation dependent and so the following can only be

general guidance:-

•

Avoid routing wiring to this unit alongside cables and

products that are, or could be, a source of interference.

•

The auxiliary supply to the unit should not be subject to

excessive interference. In some cases, a supply line

filter may be required.

•

To protect the product against incorrect operation or

permanent damage, surge transients must be controlled.

It is good EMC practice to suppress differential surges to

2kV or less at the source. The unit has been designed

to automatically recover from typical transients, however

in extreme circumstances it may be necessary to

temporarily disconnect the auxiliary supply for a period

of greater than 5 seconds to restore correct operation.

•

Screened communication and small signal leads are

recommended and may be required. These and other

connecting leads may require the fitting of RF

suppression components, such as ferrite absorbers, line

filters etc., if RF fields cause problems.

It is good practice to install sensitive electronic

instruments that are performing critical functions in EMC

enclosures that protect against electrical interference

causing a disturbance in function.