Fluke Calibration 718Ex is a safe intrinsically protected pressure calibrator designed for professional pressure calibration in hazardous and potentially explosive environments. The compact handheld instrument combines pressure measurement, an integrated pressure and vacuum hand pump, precise fine adjustment, mA measurement and pressure switch testing in one rugged field calibration solution.
The Fluke Calibration 718Ex is particularly suitable for technicians working in the process, chemical, petrochemical, oil and gas and other industries where pressure instruments must be tested in hazardous areas.
Its intrinsic safety approval includes ATEX II 1G Ex ia IIC T4, allowing the calibrator to be used in appropriately classified hazardous environments when all applicable safety requirements are observed.
Three internal pressure ranges are available: 30 psi / 2 bar, 100 psi / 7 bar and 300 psi / 20 bar. The integrated hand pump can generate both positive pressure and vacuum, while a fine adjustment vernier and bleed valve make it easier to establish precise calibration points.
The internal pressure sensor provides an accuracy of 0.05% of full scale. For applications requiring other pressure ranges, intrinsically safe Fluke pressure modules can extend pressure measurement capability up to 3,000 psi / 200 bar.
The Fluke Calibration 718Ex also measures current from 0 to 24 mA with 0.001 mA resolution. Pressure and current can be displayed simultaneously, making the calibrator particularly useful for testing pressure transmitters with standard 4 to 20 mA output signals.
At europascal, the Fluke Calibration 718Ex can be combined with suitable intrinsically safe pressure modules and calibration accessories for professional field pressure calibration. For professional calibration and metrological traceability, visit the europascal Calibration Service.
Your Benefits at a Glance
The Fluke Calibration 718Ex combines intrinsic safety, pressure generation and pressure measurement in a compact handheld calibrator.
Key benefits include:
- Intrinsically safe pressure calibrator
- Designed for hazardous areas
- ATEX II 1G Ex ia IIC T4 compliant
- I.S. Class I, Division 1 capability
- Integrated pressure hand pump
- Integrated vacuum generation
- Fine adjustment vernier
- Bleed valve for controlled pressure release
- 30 psi / 2 bar internal range available
- 100 psi / 7 bar internal range available
- 300 psi / 20 bar internal range available
- Internal pressure accuracy of 0.05% FS
- Pressure measurement up to 200 bar with suitable intrinsically safe pressure modules
- 0 to 24 mA current measurement
- 0.001 mA current resolution
- 0.02% current measurement accuracy
- Pressure switch test function
- Zero function
- Min function
- Max function
- Hold function
- Damping function
- Multiple selectable pressure units
- Simultaneous pressure and current display
- Rugged field design
- Compact dimensions
- Battery-powered operation
- Suitable for pressure transmitter calibration
- Suitable for pressure switch testing
- Suitable for pressure gauge calibration
Intrinsically Safe Pressure Calibration
The defining feature of the Fluke Calibration 718Ex is its intrinsic safety design.
The instrument is designed for pressure calibration in hazardous environments where conventional electronic test equipment may not be suitable.
The 718Ex complies with:
ATEX II 1G Ex ia IIC T4.
The instrument also carries intrinsic safety certification for:
Class I, Division 1, Groups A-D, T4.
The applicable approval requirements, control drawings and safety instructions must always be observed when the calibrator is used in hazardous areas.
Integrated Pressure and Vacuum Hand Pump
The Fluke Calibration 718Ex incorporates its own:
pressure and vacuum hand pump.
This means a separate pneumatic hand pump is not normally required for pressure generation within the internal range of the selected 718Ex model.
The integrated pump generates positive pressure and vacuum, providing a compact self-contained solution for field calibration.
This is particularly useful in hazardous areas where minimizing the amount of additional equipment can simplify the calibration setup.
Fine Pressure Adjustment
Accurate pressure generation requires more than a hand pump.
The Fluke Calibration 718Ex therefore incorporates a:
fine adjustment vernier.
After the approximate pressure has been generated with the hand pump, the vernier allows smaller adjustments to be made.
This helps the technician approach the required calibration point accurately.
Bleed Valve
A built-in:
bleed valve
allows pressure to be released in a controlled manner.
The combination of hand pump, fine adjustment vernier and bleed valve provides the essential pneumatic functions required for manual pressure calibration in one compact instrument.
Three Internal Pressure Ranges
The Fluke Calibration 718Ex is available in three main internal pressure ranges:
Fluke Calibration 718Ex 30G
Fluke Calibration 718Ex 100G
Fluke Calibration 718Ex 300G
This allows users to select an internal pressure range appropriate for their typical calibration workload.
Fluke Calibration 718Ex 30G
The 30G version provides an internal pressure range of approximately:
-12 to 30 psi
or:
-0.83 to 2 bar.
The resolution is:
0.001 psi
or approximately:
0.0001 bar.
This version is particularly suitable for lower-pressure transmitters, gauges and switches.
Fluke Calibration 718Ex 100G
The 100G version extends the internal pressure range to approximately:
-12 to 100 psi
or:
-0.83 to 7 bar.
Pressure resolution is approximately:
0.001 bar.
This range covers many common industrial process pressure applications.
Fluke Calibration 718Ex 300G
For higher process pressures, the Fluke Calibration 718Ex 300G provides a range of approximately:
-12 to 300 psi
or:
-0.83 to 20 bar.
This version is particularly useful for industrial pressure transmitters and gauges operating at higher pneumatic pressures.
Internal Pressure Accuracy
The internal pressure sensor of the Fluke Calibration 718Ex provides an accuracy of:
0.05% of full scale.
Available measurement functions include:
- Zero
- Min
- Max
- Hold
- Damp
These functions support routine pressure measurement and calibration tasks in the field.
Pressure Measurement up to 200 bar
The measurement capability of the Fluke Calibration 718Ex can be extended beyond the internal sensor range.
Suitable intrinsically safe Fluke pressure modules allow pressure measurement up to:
3,000 psi / 200 bar.
This significantly increases the versatility of the calibrator.
The external pressure module provides the pressure measurement, while a suitable external pressure source is required when the desired pressure exceeds the capability of the 718Ex internal hand pump.
Intrinsically Safe Pressure Modules
Fluke provides intrinsically safe pressure modules for use with compatible Ex calibrators.
These modules allow the technician to select a pressure range appropriate for the device under test while retaining a suitable intrinsically safe calibration configuration.
Fluke specifies eight intrinsically safe pressure modules for extending the pressure measurement capability of the 718Ex up to 200 bar.
The certification and compatibility of the complete measurement system must always be verified before use in a hazardous area.
Pressure Transmitter Calibration
The Fluke Calibration 718Ex is particularly suitable for pressure transmitter calibration.
The integrated pump applies the pneumatic test pressure.
The internal sensor measures the applied pressure.
At the same time, the calibrator can measure the electrical current output of the pressure transmitter.
A typical industrial pressure transmitter provides:
4 to 20 mA.
This means the technician can monitor both the pressure input and transmitter current output from one instrument.
Simultaneous Pressure and Current Display
The LCD display provides simultaneous indication of:
pressure
and:
current.
This simplifies pressure transmitter calibration because the technician does not need to continually switch between separate measurement screens.
Both relevant calibration values remain visible during adjustment and testing.
mA Measurement
The Fluke Calibration 718Ex measures DC current over the range:
0 to 24 mA.
Resolution is:
0.001 mA.
Fluke specifies current measurement accuracy of:
0.02% of reading ±2 counts.
This makes the instrument well suited for evaluating standard 4 to 20 mA pressure transmitter signals.
Pressure Switch Testing
The Fluke Calibration 718Ex incorporates a dedicated:
pressure switch test function.
This allows a pressure switch to be connected pneumatically and electrically to the calibrator.
The integrated hand pump generates the test pressure while the calibrator detects the electrical switching event.
This provides a compact solution for testing pressure switches directly in industrial field applications.
Selectable Pressure Units
The Fluke Calibration 718Ex supports a wide selection of engineering pressure units.
Available units include:
- psi
- bar
- mbar
- kPa
- inH₂O
- cmH₂O
- kg/cm²
- mmHg
- inHg
This allows the technician to work directly in the engineering unit specified for the device under test.
Non-Corrosive Gases
The internal pneumatic system of the Fluke Calibration 718Ex is designed for:
non-corrosive gases.
The pressure medium must therefore be compatible with the internal sensor and pump.
For external pressure modules, media compatibility depends on the specification of the selected module.
The relevant module documentation should always be checked before connecting a pressure medium.
Min and Max Functions
The Min and Max functions allow minimum and maximum measured values to be captured.
This can be useful when observing pressure fluctuations or determining the extreme values reached during a test.
The Hold function can freeze a displayed value for easier documentation.
Damping Function
Pressure measurements can fluctuate because of process pulsations or unstable pressure sources.
The:
Damp function
helps stabilize the displayed pressure value.
This can improve readability when working with fluctuating pneumatic pressure signals.
Rugged Field Design
The Fluke Calibration 718Ex is designed for industrial field use.
Its compact housing and protective holster help protect the instrument during everyday calibration and maintenance work.
Fluke specifies a:
1 meter drop test.
The instrument is also specified for random vibration of:
2 g from 5 to 500 Hz.
These characteristics make the 718Ex suitable for demanding maintenance environments.
Compact Dimensions
The dimensions of the Fluke Calibration 718Ex with holster are approximately:
216 × 94 × 66 mm.
This compact size makes the calibrator easy to carry between different field calibration locations.
Low Weight
The Fluke Calibration 718Ex weighs approximately:
992 g with holster.
The combination of low weight, integrated hand pump and pressure measurement reduces the amount of separate equipment that technicians need to carry.
Battery Operation
The Fluke Calibration 718Ex is powered by an approved:
9 V alkaline battery.
Fluke specifies a typical battery life of approximately:
4 to 20 hours
depending on the functions used.
For hazardous-area operation, only batteries and operating procedures permitted by the applicable Fluke safety documentation may be used.
Operating Temperature
The specified operating temperature range is:
-10 °C to +55 °C.
This allows the calibrator to be used across a broad range of industrial field conditions.
The applicable temperature limitations associated with intrinsic safety approval must also be observed.
Operating Altitude
The Fluke Calibration 718Ex is specified for operation at altitudes up to:
3,000 m.
This provides additional flexibility for industrial and infrastructure applications in different geographical environments.
Technical Highlights
| Feature | Fluke Calibration 718Ex |
|---|---|
| Product type | Intrinsically Safe Pressure Calibrator |
| Internal ranges | 30, 100 and 300 psi |
| Metric internal ranges | 2, 7 and 20 bar |
| Vacuum capability | Approx. -0.83 bar |
| Internal pressure accuracy | 0.05% FS |
| Pressure generation | Integrated hand pump |
| Vacuum generation | Integrated hand pump |
| Fine adjustment | Vernier |
| Controlled pressure release | Bleed valve |
| Extended pressure measurement | Up to 200 bar |
| External Ex modules | 8 compatible ranges |
| Current measurement | 0 to 24 mA |
| Current resolution | 0.001 mA |
| Current accuracy | 0.02% rdg ±2 counts |
| Pressure switch test | Yes |
| Pressure/current display | Simultaneous |
| Pressure medium | Non-corrosive gases |
| ATEX | II 1G Ex ia IIC T4 |
| Operating temperature | -10 °C to +55 °C |
| Dimensions | 216 × 94 × 66 mm |
| Weight | Approx. 992 g |
| Battery | 9 V alkaline |
| Typical battery life | 4 to 20 hours |
Fluke Calibration 718Ex vs. 718
The Fluke Calibration 718Ex should be distinguished from the standard Fluke 718.
Both instruments combine pressure measurement with an integrated pressure and vacuum hand pump.
The key difference is the intrinsic safety design of the 718Ex.
The Fluke Calibration 718Ex is designed and approved for appropriate hazardous-area applications and carries certifications including:
ATEX II 1G Ex ia IIC T4.
The standard Fluke 718 is intended for conventional industrial environments and must not simply be substituted for the 718Ex where intrinsic safety is required.
The exact performance specifications also differ between the two product families and should be evaluated separately.
Complete Field Calibration Solution
The combination of:
pressure generation
pressure measurement
mA measurement
and:
pressure switch testing
makes the Fluke Calibration 718Ex a highly practical field calibration instrument.
For many routine calibration tasks, a technician can perform the complete pressure test with one compact handheld device.
When additional pressure ranges are required, suitable intrinsically safe pressure modules can extend measurement capability up to 200 bar.
Typical Applications
The Fluke Calibration 718Ex is suitable for:
- Hazardous-area pressure calibration
- Pressure transmitter calibration
- Pressure switch testing
- Pressure gauge calibration
- 4 to 20 mA pressure transmitter testing
- Pneumatic pressure calibration
- Vacuum calibration
- Process instrumentation
- Oil and gas applications
- Chemical industry applications
- Petrochemical applications
- Refinery maintenance
- Process plant maintenance
- Field calibration
- Commissioning
- Preventive maintenance
- Quality assurance
- Intrinsically safe measurement applications
Why Choose the Fluke Calibration 718Ex?
The Fluke Calibration 718Ex combines intrinsic safety with the essential functions required for professional field pressure calibration.
Its integrated pressure and vacuum hand pump eliminates the need for a separate pressure pump for many routine applications. A fine adjustment vernier and bleed valve provide precise manual pressure control.
Three internal pressure ranges of 2 bar, 7 bar and 20 bar allow the appropriate model to be selected according to the application.
The internal pressure sensor provides an accuracy of 0.05% FS, while suitable intrinsically safe external pressure modules extend measurement capability up to 200 bar.
Current measurement from 0 to 24 mA with 0.001 mA resolution allows standard 4 to 20 mA pressure transmitter outputs to be evaluated directly. Pressure and current are displayed simultaneously, simplifying transmitter calibration.
A dedicated pressure switch test function, selectable engineering units, Min/Max, Hold and damping functions provide additional flexibility for industrial calibration work.
Most importantly, the Fluke Calibration 718Ex is specifically designed for use in appropriate hazardous environments and complies with ATEX II 1G Ex ia IIC T4 requirements.
Its rugged construction, compact dimensions, approximately 992 g weight and battery-powered operation make it an excellent solution for technicians performing pressure calibration directly in hazardous industrial environments.
At europascal, the Fluke Calibration 718Ex can be combined with suitable intrinsically safe pressure modules and accessories to create a professional pressure calibration solution for hazardous-area applications.
For professional calibration and metrological traceability, visit the europascal Calibration Service.
