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718 ex
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Fluke 718 ex [3/4] Faults and damage

Pressure Calibrator

Safety Information

• To avoid a violent release of pressure in a

pressurized system, shut off the valve and

slowly bleed off the pressure before attaching

or detaching the internal pressure sensor or

pressure module fitting to the pressure line.

• To avoid overpressure damage, do not apply

pressure to the internal pressure sensor input

that exceeds the following:

• Model 718Ex 30G: 30.000 psi, 206.85 kPa,

or 2.0685 bar. OL appears at 33 psi.

• Model 718Ex 100G: 100.00 psi, 689.5 kPa,

or 6.895 bar. OL appears at 120 psi.

• Model 718EX 300G: 300.00 psi, 2068 kPa,

or 20.68 bar. OL appears at 360 psi.

• When measuring the pressure of potentially

hazardous gases, care must be taken to

minimize the possibility of leakage:

• Confirm that all pressure connections are

properly sealed.

• Confirm that the Pressure/Vacuum

Release Control is in the closed position

(fully clockwise) and the

Pressure/Vacuum switch is in the +

position (fully clockwise).

• If the Calibrator has been dropped or

subjected to rough handling, remove the

Calibrator to a safe area and check for

leaks to confirm the integrity of the

internal pneumatic components.

• Do not use a Model 718Ex (including 718Ex

300G) to measure potentially hazardous gases

at pressure greater than 100 psi (6.9 bar).

• Do not use in a damp or wet environment.

Faults and Damage

Applying a voltage greater than 30 V to the input of the Calibrator

invalidates its Ex Approval and may impair its safe operation in

an Ex-hazardous area.

If there is any reason to suspect that the safe operation of the

Calibrator has been affected, it must be immediately withdrawn

from use, and precautionary measures must be taken to prevent

any further use of the Calibrator in an Ex-hazardous area.

Fully observe all instructions, warnings, and cautions contained

in this manual. In case of doubt due to translation and/or printing

errors, refer to the original English users manual.

The safety features and integrity of the unit may be compromised

by any of the following:

• External damage to the housing

• Internal damage to the Calibrator

• Exposure to excessive loads

• Incorrect storage of the unit

• Damage sustained in transit

• Correct certification is illegible

• Using the product with the red holster removed

• Functioning errors occur

• Permitted limitations are exceeded

• Functioning errors or obvious measurement inaccuracies

occur which prevent further measurement by the Calibrator

• Opening the case

Safety Regulations

The use of the Calibrator meets the requirements of the

regulations providing that the user observes and applies the

requirements as stated in the regulations and that improper and

incorrect use of the unit is avoided.

• Use must be restricted to the specified application

parameters.

• Do not open the Calibrator.

• Do not remove or install the battery within the Ex-hazardous

area.

• Do not carry additional batteries within the Ex-hazardous

area.

• Use only type-tested batteries. The use of any other

batteries will invalidate the Ex-certification and present a

safety risk.

Fluke 718 ex [3/4] Faults and damage

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