GENERAL INFORMATION |
Series / Product | Series
| Brand | KELLER
| Origin | Switzerland
| Series | KELLER – LEX1
| Ordering Code | N/A
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MEASURING RANGES |
Reference Pressure | Absolute, Differential, Gauge
| Pressure Unit | [bar], [mbar], [hPa], [kPa], [MPa], [PSI], [mH2O], [cmH2O], [inH2O], [ftH2O], [mmHg], [inHg], [kp/cm2]
| Pressure Range | -1 … 1 to -1 … 30 bar, 0 … 30 mbar to 0 … 1000 bar
| Pressure Range [bar] [Min] | -1
| Pressure Range [bar] [Max] | 10000
| Pressure Range [psi] [Min] | -14.5
| Pressure Range [psi] [Max] | 14503.8
| Static Pressure [bar] [Max] | N/A
| Overpressure [bar] [Max] | N/A
| Positive Overpressure [bar] | N/A
| Negative Overpressure [bar] | N/A
| Burst Pressure [bar] [Min] | N/A
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ENVIROMENTAL CONDITIONS |
Media Temperature [°C] [Min] | 0
| Media Temperature [°C] [Max] | +50
| Ambient Temperature [°C] [Min] | -20
| Ambient Temperature [°C] [Max] | +50
| Storage Temperature [°C] [Min] | -20
| Storage Temperature [°C] [Max] | +70
| Compensated Temperature [°C] [Min] | N/A
| Compensated Temperature [°C] [Max] | N/A
| Ingress Protection | IP65
| Vibration Resistance | N/A
| Shock Resistance | N/A
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GENERAL MECHANICAL SPECIFICATIONS |
Mounting | Threaded – Flush Diaphragm, Threaded – Internal Diaphragm
| Process Connection Male/Female | Male
| Process Connection | 1/2" NPT, 1/4" NPT, 7/16"-20 UNF, G 1/2", G 1/4", G 3/4"
| With Damper (Puls-snubber) | N/A
| Process Connection Material | Stainless steel (316L)
| Diaphragm / Sensor Material | Aluminium oxide 96 %, gold-plated, Stainless steel (316L)
| Filling Fluid | Silicone oil, Without
| Seal | FKM, Viton®
| Hygienic Version | NO
| Electrical Connection | Fischer
| Electrical Connection Details | Fischer D 103 A054-130
| Display | YES
| Display Details | ■ 2 rows with 5 digits each ■ 2 measurements per second
| Weight | ■ Piezoresistive: Approx. 300 g ■ Capacitive: Approx. 335 g
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PRESSURE GAUGE SPECIAL FEATURES |
Product Type | Digital Pressure Gauge
| Pressure Gauge Technology | Capacitive, Piezoresistive
| Pressure Gauge Technology Details | Insulated piezoresistive pressure sensor encapsulated in an oil-filled metal housing
| Pressure Gauge Design | N/A
| Varieties | Absolute, Data Logger, Differential, Explosion Proof (EX), High Accuracy, Vacuum / Compound
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PRESSURE GAUGE PERFORMANCE |
Accuracy Class / Grade | ≤ ± 0.05 %FS, ≤ ± 0.1 %FS
| Accuracy Details | @ RT (20 … 25 °C): ■ Piezoresistive: ≤ ± 0.05 %FS ■ Capacitive: ≤ ± 0.1 %FS
| Adjustability Details | ■ Adjustable measuring and storage interval ■ Zero point calibration via button ■ Digital calibration (zero point, end point)
| Adjustable | YES
| Data Logger | YES
| Data Logging Details | Without in-built logger, the PC software will allow you to log directly to the computer via a USB cable and save the data to the hard drive
| Measuring Rate | ■ 2 measurements per second ■ Interface measuring rate: 30 measurements per second
| Resolution | Refer to related table in the datasheet
| Storage / Memory Details | There is no memory storage within the LEX1 itself
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PRESSURE GAUGE ELECTRICAL SPECIFICATIONS |
Supply Voltage | ■ Battery: 3 V, type CR2430 ■ External power supply: 8 … 28 VDC
| Output Signal | RS-485
| Output Signal Details | N/A
| Switching Functions | Without
| Switching Functions Details | N/A
| Electrical Switch Ratings Details | N/A
| Communication | RS485 bus interface for communication with up to 128 devices
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TESTS / APPROVALS |
Scope Approvals | ATEX / Europe, CE / European Community, IECEx / Worldwide
| Ship Approvals | N/A
| Explosion Protection | Intrinsic Safety "i"
| EX Zone | Zone 1, Zone 2
| Other Approvals | N/A
| SIL Qualification | N/A
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INDUSTRIES / APPLICATIONS |
Industry | Mechanical engineering & Automation
| Application | Calibration technology, Test and measurement
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