Keller LEO1 Specifications

Digital ManoMeter

leo 1

with peak recorDing / peak Measuring rate: 5 khz

LEO 1 is a micro-processor controlled, accurate and versatile digital pressure measuring instru­ment with integrated fast peak-, max.- and min.-function.

The instrument is used in two modes:

MANO-Mode
The pressure is measured twice per second and displayed. The top display indicates the actual
pressure, the bottom display shows the MAX.- or MIN- pressure since the last RESET.

PEAK-Mode

The pressure is measured 5’000 times per second and is brought to the display twice per

second. The top display shows the actual pressure, the bottom display the peak- (MAX.) or
trough-pressure (MIN.).

LEO 1 has two operating keys. The left key is to turn the instrument on, to select the functions
and the pressure units. The right key executes the selected function or unit. The right key is also
used to switch between the MAX.- and MIN.-value in both modes.

The instrument has the following functions:

RESET With the RESET-function, the MAX.- and MIN.-value is set to the actual pressure

value.

ZERO The ZERO-function allows to set any value as a new Zero reference. Barometric

pressure variations can thus be compensated.

The factory setting of the Zero for the ranges -1…3 bar or -1…30 bar is at 0 bar

absolute. For sealed gauge pressure measurements, activate “ZERO SEt” at ambient
pressure. Instruments with the ranges > 30 bar are calibrated with ambient pressure
as a Zero reference.

leo 1 ei

kMPa

BAT LOW

mBar / hPA

PSI

CONT The instrument turns off 15 Min. after the last key function. Activating CONT (Conti-

nuous) deactivates this automatic turn-off.

UNITS All standard instruments are calibrated in bar. The pressure can be
indicated in the following units: bar, mbar/hPa, kPa, MPa, PSI, kp/cm2

Optional accessories: - Protective rubber covering

- Carrying bag

SPECIFICATIONS

Pressure Ranges, Resolution, Overpressure: Range Resolution Overpressure

-1…3 bar 1 mbar 10 bar

-1…30 bar 10 mbar 60 bar
0…300 bar 100 mbar 400 bar
0…700 bar 200 mbar 700 bar
0…1000 bar 200 mbar 1000 bar

Accuracy RT (room temperature) * < 0,1 %FS
Total Error Band (0…50 °C) < 0,2 %FS
Storage- / Operating Temperature -20…70 °C / 0…50 °C
Compensated Temperature Range 0…50 °C
Supply 3 V battery, type CR 2430

Battery Life • 1’000 hours continuous operation in Mano-Mode

• 150 hours continuous operation in Peak-Mode
Pressure Connection G1/4”
Protection, CEI 529 IP65
Diameter x Height x Depth 76 x 118 x 42 mm
Weight ≈ 210 g

* Including linearity, repeatability and hysteresis.

MANO PEAK TEMPϒCϒF

MAX

MIN

RESET

CONT.ZERO.

OFF

Display Segments LEO 1

LEO 1 Ei

Intrinsically safe version, 2014/34/EU

Classication: II 1 G Ex ia IIC T5 Ga
Certication File:

The Ex-protected LEO 1 can only be operated
with the RENATA CR2430 battery.

Functions, ranges and
accuracy are identical to
the standard version.

LCIE 01 ATEX 6001 X
IECEx LCIE 18.0035 X

KELLER AG für Druckmesstechnik
CH-8404 Winterthur

[phone]
[e-mail]

KELLER Ges. für Druckmesstechnik mbH

DE-79798 Jestetten

[phone]
[e-mail]

KELLER America

Newport News, Virginia

1 877 253 5537
[e-mail]

Edition 01/2019

Subject to alterations
Companies approved to ISO 9001

www.keller-druck.com