Keller LEX1 (3bar) Digital Precision Manometer

SKU: KELL303030.0001

High-precision (0.1mbar), high-accuracy (±0.05%) measurement up to 3bar
Suitable for use in laboratories, calibration facilities and specialist industries
Forms part of a Keller-Bus pressure & temperature monitoring system

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 (3bar)

The Keller LEX1 Digital Precision Manometer is a useful industrial pressure gauge with an oil-surrounded piezoresistive transducer that can measure absolute pressure from 0 to 2bar and relative pressure from -1 to 3bar with an accuracy of ±0.05% FS and a resolution of 0.1mbar. It takes measurements via a G ¼” male connector. It is suitable for applications including laboratory use, calibration and certain industrial uses.

The clear digital screen on the Keller LEX1 shows readings in a number of different units. It has a zero function for relative measurement and a min/max display which is easy to rest as required. Digital calibration with a zero point and end point can be used to help safeguard accuracy.

The Keller LEX1 can be connected to a recording system via the RS485 Fischer connection and an optional Keller K114A Cable Adaptor. As part of a Keller-Bus protocol – coordinated with a free CCS30 software package from the Keller website – the gauge can work with up to 127 other instruments to carry out extensive monitoring.

Two-button operation makes the Keller LEX1 very simple to use despite its complex functionality and it has an IP65 ingress protection rating. It has a 2000-hour battery life and can also be powered from an external power supply.

Keller part number: 303030.0001

Key Features

Piezoresistive transducer in oil-filled housing
Absolute pressure range: 0 to 2bar
Differential pressure range: -1 to 3bar
Accuracy: ±0.05% FS
Resolution: 0.1mbar
G ¼” male connector
Laboratory, calibration, industrial use
Multiple pressure units
Digital calibration function
Min/max and zero functions
Works as part of Keller-Bus monitoring system

	ECO2	LEO1	LEO2	LEO3	LEO5	LEO Record	LEX1
-1 to 3bar		✔	✔	✔	✔	✔	✔
-1 to 31bar	✔	✔	✔	✔	✔	✔	✔
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 safe version	✔	✔	✔		✔	✔
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 with Keller-Bus protocol				✔	✔		✔

Performance

Absolute pressure range: 0 to 2bar
Differential pressure range: -1 to 3bar
Overpressure: 6bar
Resolution: 0.1mbar
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