Intrinsically Safe Gas Pumps
For use in hand-held devices, even in Ex zone 0
The top priority in any potentially explosive atmosphere is the safety of people and the environment. Especially when it involves working with flammable gases and vapors, personal protection comes first. We’re aware of this responsibility and have developed a number of intrinsically safe micro gas pumps specifically for battery-operated hand-held devices and portable devices in Ex zones.
How are Intrinsic Safety and Gas Pumps Related?
In potentially explosive atmospheres, it must always be ensured that no person is harmed or operational equipment damaged.
All devices used in Ex Zone 0 must be designed to prevent any risk of explosion, both in normal operation and in an error state. Furthermore, an explosive atmosphere, i.e. a mixture of air with gas, vapor or mist, must always be factored into the hazard analysis in Ex Zone 0. Using a device that is not intrinsically safe could lead to an explosion here.
To prevent explosions, only devices that are Ex i certified are used in Ex Zone 0. The “i” stands for “intrinsic safety”. But what does this mean? As some devices qualify as ignition sources in the explosion triangle described above, it must be ensured that these devices do not produce sparks or thermal energy capable of igniting under any circumstances, even when operating errors or technical malfunctions occur.
Micro gas pumps for portable gas measurement technology
For the safe operation of portable gas measurement devices in Ex zones, even small hand-held devices need to fulfill the specifications of the ATEX directives. For all applications that require an Ex i classification for their electrical equipment, we offer our intrinsically safe micro gas pumps.
As electrically powered components in hand-held and large portable devices for gas analysis in Ex zones, our diaphragm pumps work with a limited amount of energy that does not pose a risk of igniting. The most important design parameters are the current and voltage limiting DC and DCB motors by KNF. Our intrinsically safe micro gas pumps work maintenance free for up to 10,000 operating hours* and as components in gas measuring devices of various manufacturers.
The choice is yours: intrinsically safe DC or DCB motors for various flow rates:
How long is the service life of a KNF diaphragm pump? Why 1,000 operating hours can turn out to be 2,500.
When designing fluidics components, choosing a provider for diaphragm pumps is essential and several factors have an impact on the decision. One of these factors is the service life of the pumps. We are aware of this and therefore carry out thorough life tests on our intrinsically safe micro gas pumps. The test conditions are standardized for reproducibility and traceability and will not precisely represent your individual operating conditions. The actual operating conditions – operating point, operating type etc. – can therefore lead to a significantly longer service life than that determined under our tough test conditions.
What does this mean for you? Your requirement of 2,500 operating hours could possibly be met by a KNF diaphragm pump with a motor that has a service life of 1,000 operating hours.
The Appropriate Pump for Your Application
Each measurement application requires different performance parameters: Our micro gas pumps for use in portable gas measuring devices cover a wide range of applications and impress with their high performance, compactness and efficiency. Their high chemical resistance and reliability makes them especially suitable for applications where first and foremost the safety of people and facilities must be ensured. Additional advantages are the long service life and maintenance-free design, enabling a safe and long operation for your use case. All our micro gas pumps are controllable, are low in vibration and pulsation and can be operated in any installation position. Thanks to our modular system, each micro gas pump can be adjusted to your specifications in a time- and cost-efficient manner, from test conditions to packaging and logistics.
NMP 03
- Ultimate vacuum: 600 mbar abs.
- Operating pressure: max. 330 mbar rel.
Motor option: KPDC-M
Motor option: KPDC-L
Motor option: KPDC-S
Motor options: KPDC-B1 or KPDC-B3
Testing under operating conditions required
NMP 05
- Ultimate vacuum: 500 mbar abs.
- Operating pressure: max. 0.45 bar rel.
Motor option: KPDC-M
Motor option: KPDC-S
Motor option: KPDC-S
Motor option: KPDC-B
Motor option: KPDC-L
NMS 010
- Ultimate vacuum: 600 mbar abs.
- Operating pressure: max. 0.5 bar rel.
Motor option: KPDC-L
Motor option: KPDC-S
NMP 09
- Ultimate vacuum: 500 mbar abs.
- Operating pressure: max. 0.6 bar rel.
Motor option: KPDC-M
Motor option: KPDC-S
Motor option: KPDC-S
Motor option: KPDC-L
Motor option: KPDC-B
NMP 015
- Ultimate vacuum: 400 mbar abs.
- Operating pressure: max. 0.9 bar rel.
Motor option: KPDC-M
Testing under operating conditions required
Motor option: KPDC-L
NMS 020
- Ultimate vacuum: 500 mbar abs.
- Operating pressure: max. 0.5 bar rel.
Motor option: KPDC-B
Motor option: KPDC-L
NMP 830
- Ultimate vacuum: 250 mbar abs.
- Operating pressure: max. 1.4 bar rel.
Motor option: KPDC, KVDC, KTDC
Motor option: KPDC-BI4, KVDC-BI4, KTDC-BI4
NMP 850
- Ultimate vacuum: 230 mbar abs.
- Operating pressure: max. 2.5 bar rel.
Motor option: KPDC, KTDC
Motor option: KPDC-BI4, KTDC-BI4
