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Keller
Keller LEX1 Digital Pressure Gauge
Quote on request
No online payment · add lines to RFQ BOM
High-precision digital manometer. ±0.05% FS; to 1000 bar. RFQ + selection help.
Download datasheet PDF
RFQ cart holds BOM lines only. Submit for engineering quote.
Key parameters
Accuracy
+/-0.05 %FS at RT; optional precision to +/-0.01 %FS (selected absolute ranges)
Display
5-digit LCD; simultaneous pressure + min/max
Type
High-precision digital pressure gauge / manometer (LEX1 / LEX1-Ei family)
Total Error Band
+/-0.05 %FS (0 to 50 C compensated)
Pressure Ranges
-1...1 bar to 0...1000 bar (relative / absolute variants)
Interface
RS485 bus for up to 128 devices; KELLER PressureSuite software
Fits calibration and lab pressure indication where you need a Keller LEX1 high-precision digital manometer with ±0.05% FS class accuracy and optional ±0.01% FS on selected absolute ranges.
Key advantages
- High-precision gauge — LEX1 / LEX1-Ei digital pressure gauge / manometer
- Accuracy — ±0.05 %FS at RT; optional precision to ±0.01 %FS (selected absolute ranges)
- TEB — ±0.05 %FS (0 to 50 C compensated)
- Ranges — −1...1 bar to 0...1000 bar (relative / absolute variants)
- Interface / power — RS485 bus (to 128 devices); PressureSuite; CR2430 coin cell ~2000 h; IP65
Typical applications
- Lab and calibration bench digital pressure indication.
- Multi-drop RS485 manometer networks with PressureSuite.
- Portable precision checks needing coin-cell LEX1 runtime.
Selection guide
- Range / type — relative vs absolute; −1…1 bar to 0…1000 bar
- Accuracy option — standard ±0.05% FS vs ±0.01% FS selected absolutes
- LEX1 vs LEX1-Ei — confirm IS variant if required
- Interface — local display vs RS485 / PressureSuite
Common mistakes
- Assuming ±0.01% FS on every range — only selected absolute ranges.
- Ignoring IP65 limits for washdown above published rating.
- Ordering LEX1 when LEX1-Ei IS is required.
When to RFQ / what to tell us
- Pressure range and relative vs absolute.
- Accuracy option; LEX1 vs LEX1-Ei; quantity; ship-to.
Request a Quote · Get selection help
Specs
| Spec | Value |
|---|---|
| SKU | 12355 |
| Brand | Keller |
| Model | LEX1 Digital Pressure Gauge |
| Product type | Digital Pressure Gauge |
| Type | High-precision digital pressure gauge / manometer (LEX1 / LEX1-Ei family) |
| Accuracy | +/-0.05 %FS at RT; optional precision to +/-0.01 %FS (selected absolute ranges) |
| Total error band | +/-0.05 %FS (0 to 50 C compensated) |
| Pressure ranges | -1...1 bar to 0...1000 bar (relative / absolute variants) |
| Display | 5-digit LCD; simultaneous pressure + min/max |
| Interface | RS485 bus for up to 128 devices; KELLER PressureSuite software |
| Power | 3 V CR2430 coin cell; up to about 2000 operating hours; external supply option |
| Protection | IP65 |
Documents
FAQ
Q: Accuracy? A: ±0.05% FS at RT; optional ±0.01% FS on selected absolute ranges; TEB ±0.05% FS 0–50 °C.
Q: Ranges? A: About −1…1 bar to 0…1000 bar, relative/absolute variants.
Q: What should I send for a quote? A: Range/type, accuracy option, IS need, quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Accuracy | +/-0.05 %FS at RT; optional precision to +/-0.01 %FS (selected absolute ranges) |
| Display | 5-digit LCD; simultaneous pressure + min/max |
| Type | High-precision digital pressure gauge / manometer (LEX1 / LEX1-Ei family) |
| Total Error Band | +/-0.05 %FS (0 to 50 C compensated) |
| Pressure Ranges | -1...1 bar to 0...1000 bar (relative / absolute variants) |
| Interface | RS485 bus for up to 128 devices; KELLER PressureSuite software |
| Power | 3 V CR2430 coin cell; up to about 2000 operating hours; external supply option |
| Protection | IP65 |
| Functions | Zero calibration, auto shutdown, user pressure units, digital end-point calibration |
| Document | KELLER Pressure LEX1-Ei digital precision gauge datasheet (Edition 10/2026 family sheet) |