Keller LEX1 Ei (400bar) Intrinsically Safe Digital Manometer

SKU: KELL303030.2004

Pressure range of 0 to 400bar, accuracy of ±0.05% FS, and resolution of 20mbar
Intrinsically safe with classification of Ex II 2 G and Ex ia IIC T6 Gb
IP65 ingress protection rating, battery life of 2000 hours

More Info

Members earn 710 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.

Typically ships in 5-7 working days

Members earn 710 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 Ei Intrinsically Safe Digital Manometer (400bar)

The Keller LEX1 Ei Intrinsically Safe Digital Manometer has an absolute pressure measurement range of 0 to 400bar with an accuracy of ±0.05% FS and a resolution of 20mbar. It is suitable for specialist applications including calibration and laboratory use and takes measurements via a G ¼” male connector.

The Keller LEX1 Ei is an intrinsically safe instrument and is therefore safe to use in hazardous environments where there is a risk of combustion. It has an intrinsically safe classification of zone 1: Ex II 2 G and Ex ia IIC T6 Gb and certification files PTB 05 ATEX 2012 X and IECEx PTB 13.0028 X.

Pressure readings are available in a number of different units on the Keller LEX1 Ei’s clear digital screen. It has a digital calibration function with a zero point and end point whilst the min/max recording feature captures extreme values.

The Keller LEX1 Ei is capable of communicating with a monitoring network over its RS485 Fischer connection, however a Keller K114A Cable Adaptor is needed for this function. Keller CCS30 software – available for free from the Keller website – can be used to coordinate the system with up to 128 instruments in a Keller-Bus protocol.

The Keller Lex1 Ei has just two buttons, which makes operation very easy, and also boasts an IP65 rating and a 2000-hour battery life.

Keller part number: 303030.2004

Key Features

Intrinsically safe
Suitable for calibration
Suitable for laboratories
Range: 0 to 400bar
Accuracy: ±0.05% FS
Resolution: 20mbar
Digital calibration feature
Works in wider monitoring system
IP65 ingress protection rating
2000-hour battery life

	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				✔	✔		✔

Intrinsically Safe Categorisation

Classification: Zone 1: Ex II 2 G Ex ia IIC T6 Gb
Certification files: PTB 05 ATEX 2012 X and IECEx PTB 13.0028 X

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