Keller LEX1 (400bar) Digital Precision Manometer

SKU: KELL303030.0034

Highly accurate and precise industrial pressure gauge with range up to 400bar
Suitable for specialist applications in laboratories and calibration facilities
Digital calibration function helps ensure ongoing accuracy

More Info

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Typically ships in 5-7 working days

Members earn 685 reward points

Use reward points to get money off future purchases.

Please note: Customers must be signed into their account to be elegible. Find out more about reward points here.

Never Beaten On Price

Found this product cheaper & in stock somewhere else? Give us the details and we'll endeavour to match the price.

To price match, contact us online or call 0113 248 9966.

FREE Delivery Available

We offer FREE standard delivery on all orders over £249, with a range of next-day options also available on many items.

Find out more on our delivery information page.

60 Day Returns Guarantee

We want our customers to be fully satisfied with the goods they purchase from us, offering returns for up to 60 days.

Find out more about our refunds policy here.

Need Some Help From Our Experts?

We're always happy to offer help, information & advice to find the right instrument for you, so please get in touch.

To speak to our sales team, call us on 0113 248 9966, use our Live Chat service or contact us online.

Keller LEX1 Digital Precision Manometer (400bar)

The Keller LEX1 Digital Precision Manometer is a highly accurate pressure gauge that can be used in calibration facilities, laboratories and specialist industrial applications. It has a measurement range of 0 to 400bar with accuracy of ±0.05% FS and a maximum resolution of 20mbar. It has oil-filled metal housing and a piezoresistive pressure transducer. Pressure measurements are taken via the G ¼” male connector.

Pressure measurements are shown in a number of different units on the Keller LEX1’s clear digital display. It has a min/max recording function and also benefits from a zero function for relative measurement in addition to digital self-calibration with a set zero- and end-point.

Thanks to its RS485 Fischer data connection, the Keller LEX1 can be synchronised with up to 127 other instruments as part of a Keller-Bus protocol monitoring system. Free CCS30 coordination software is available from Keller, but connection to a PC does require a Keller K114A USB Cable Adaptor as an optional extra.

With operation conducted using just two buttons, the Keller LEX1 is easy to use and it is well-suited to tricky conditions, as certified by its IP65 ingress protection rating. The battery lasts for 2000 hours.

Keller part number: 303030.0034

Key Features

Pressure transducer in oil-filled casing
Absolute pressure: 0 to 400bar
Accuracy: ±0.05% FS
Resolution: 20mbar
G1/4” male pressure connector
Suitable for labs and calibration centres
Range of pressure units
Digital calibration function
Min/max and relative measurements
Works as part of Keller-Bus monitoring system

	ECO2	LEO1	LEO2	LEO3	LEO5	LEO Record	LEX1
-1 to 3bar		✔	✔	✔	✔	✔	✔
-1 to 30bar	✔	✔	✔	✔	✔	✔	✔
0 to 100bar					✔
0 to 300bar	✔	✔	✔	✔	✔	✔	✔
0 to 400bar							✔
0 to 700bar		✔	✔	✔	✔	✔
0 to 1000bar		✔		✔		✔	✔
Accuracy	±0.5% FS	±0.1% FS	±0.1% FS	±0.1% FS	±0.05% FS	±0.1%	±0.05% FS
Resolution(at smallest range)	10mbar	1mbar	1mbar	1mbar	1mbar	1mbar	0.1mbar
Temperature range					0˚C to 50˚C
Temperature accuracy					±1˚C
Intrinsically safeversion	✔	✔	✔		✔	✔
Peak mode		✔			✔
Pressure connector	7/16" UNF	G 1/4"	7/16" UNF	G 1/4"	G 1/4"	G 1/4"	G 1/4"
Analogue output				✔	✔
Internal memory					✔	✔	✔
Data port				RS485 Binder	USB	RS485 Fischer	RS485 Fischer
Compatible withKeller-Bus protocol				✔	✔		✔

Performance

Absolute pressure range: 0 to 400bar
Overpressure: 800bar
Resolution: 20mbar
Accuracy @ RT (20˚C to 25˚C): ≤±0.05% FS. Nonlinearity (BFSL), pressure hysteresis, non-repeatability, zero point, amplification.
Total error band (0˚C to 50˚C): ≤±0.05% FS. Max. deviation within the specified pressure and temperature range.
Long-term stability: ±0.1% FS. > 1 bar, per year under reference conditions, yearly recalibration recommended.
Long-term stability: ±0.1mbar. ≤ 1 bar, per year under reference conditions, yearly recalibration recommended.
Degree of dependency on location: <±1.5mbar. Calibrated in vertical installation position with pressure connection facing downwards.
Accuracy of temperature measurement: ±1˚C typ.
Pressure range reserve: ±10%

Electrical Data

Battery: 3 V, type CR2430. LEX1 Ei only permitted for use in haz- ardous atmospheres when used with the Renata CR2430
Battery life: Approx. 2000 hours when used continuously
External power supply: 8...28 VDC
Overvoltage protection and reverse polarity of external power supply: ± 32 VDC
RS485 voltage insulation: -7...+12 VDC
GND case insulation: > 10 MΩ @ 50 VDC
External interface: RS485 half-duplex
Interface measuring rate: 30 measurements per second
Electrical connection: Fischer D 103 A054-130
CE conformity as per 2014/30/EU (EMC): EN 61000-6-1 to -6-4; EN 61326-1 / EN 61326-2-3

Temperature Range

Compensated temperature range: 0...50 °C
Media temperature: 0...50 °C
Ambient temperature: 0...50 °C
Storage temperature: -20...70 °C

Display

Dimensions/appearance: See Dimensions & options
Number of digits on LC display: 2 rows with 5 digits each
Display mode: Pressure + min/max or pressure + temperature
Measuring rate: 2 measurements per second
Configurable units of pressure: [bar], [mbar], [hPa], [kPa], [MPa], [PSI], [mH2O], [cmH2O], [inH2O], [ftH2O], [mmHg], [inHg], [kp/cm2]
Additional units of pressure: 5 user-defined units can be configured

Mechanical data