Keller LEO 1 Manuel utilisateur

LEO 1

Actual Pressure

Max.- / Min.-Value

Peak Value

ENTER

Max. / Min.

SELECT

G1/4”

Digital Manometer with Peak Value Detection

and Max.-/Min.-Display.

Accuracy: 0,2% FS typ.

KELLER AG St. Gallerstrasse 119 CH-8404 Winterthur Tel. 052 235 25 25 Fax 052 235 25 00

KELLER GmbH Schwarzwaldstrasse 17 D-79798 Jestetten Tel. 07745 9214 0 Fax 07745 9214 50

LEO 1 has two operating keys. The left key (SELECT) serves to se-

lect the functions and the pressure units. The right key (ENTER)

activates the selected function or pressure unit. The right key is also

used to switch between the MAX.- and MIN.-value in both the Mano-

and Peak-mode.

Turn-on: Pressing the SELECT key turns the instrument on.

The instrument subsequently displays the software

version (year/week), the full-scale pressure range,

the actual pressure (top display) and the last mea-

sured MAX.-value (bottom display).

The instrument has the following functions:

RESET: Max.-/Min.-value and Peak-value are set to the

actual pressure

OFF: Turns off the instrument

MANO: Releases the following functions:

PEAK off: Normal measuring mode with 2 measurements

per second

PEAK on: Fast measuring mode with 5000 measurements

per second

ZERO SEt: Sets a new Zero reference

ZERO rES: Sets the Zero to factory setting

CONT on: Deactivates the automatic turn-off function

CONT off: Activates the automatic turn-off function (the instrument

turns off 15 minutes after the last key function)

followed by the unit selection: bar, mbar/hPa, kPa, MPa, PSI

Example: Setting a new Zero Reference:

--> Turn on the instrument by shortly pressing the SELECT-key.

--> Wait for the instrument’s measuring mode (approx. 3 seconds).

--> Press the SELECT-key 3 times: MANO appears.

--> Press ENTER: PEAK on or PEAK off appears.

--> Press SELECT: ZERO SEt appears.

--> Press ENTER: The new Zero reference is set. The instrument

returns to the measuring mode.

042

t [ms]

50 µsec-measuring cycle

Display of the Minimum Pressure Value

When in the measuring mode (Display: Actual Pressure and Max.-

value), you may display the Min.-value for 5 seconds by shortly pres-

sing the ENTER-key.

Notes

1) The functions and units can also be called up by keeping the

SELECT-key depressed. Releasing the key enables the displayed

function or unit to be activated with the ENTER-key.

2) If the selected function or unit is not activated within 5 seconds

with the ENTER-key, LEO 1 returns to the measuring mode with-

out changing any settings.

3) Turning LEO 1 on and off does not influence any of the previous

settings.

4) If the PEAK on or CONT on function is activated, it is indicated

with a flashing sign on the display.

5) If a pressure can not be represented on the display, OFL (over-

flow) or UFL (underflow) appears on the display.

6) If the actual pressure goes beyond the measuring range, the last

valid pressure value starts flashing on the display.

Measuring Procedure of the Peak-Mode

150 µsec-signal conditioning

PEAK

max.

PEAK

min.

RESET

Installation

Screw the G1/4 male port of LEO 1 into the female pressure port and

tighten using the lower hexagon of the trans-

ducer. Loosen the upper hexagon and

rotate the LEO 1 to the desired

position. Retighten.

Battery Change / Battery Life

When the battery starts weakening, a low battery warning (BAT LOW)

will appear in the upper left corner of the display.

Battery change: Open the instrument (turn the display ring beyond

the limit stop). Open the battery compartment and change the battery

(type CR 2430).

The battery life is 180 hours in Peak-mode (at continuous operation)

and 1400 hours in normal measuring mode.

Ranges / Calibration

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 0…300 bar or 0…1000 bar are calibrated

in a sealed gauge mode with 1 bar absolute pressure as a Zero refe-

rence.

The face of LEO 1 can be rotated through

355°. This feature allows the LEO 1 to be

mounted in all possible positions; vertical,

horizontal or upside down.

KELLER

LEO 1

Mano 2000

KELLER

LEO 1

Mano 2000

10 / 2000www.keller-druck.ch

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