LEO2 / -1...3BAR / 81021

## Digital ManoMeter 

## leo 2 / leo 2 ei 

## with Max.- anD Min.-function / accuracy: 0,1 %fS 

LEO 2 is a compact, micro-processor (µP) controlled, highly accurate and versatile pressure measuring instrument with digital indication. The piezoresistive pressure transducer as the heart of the instrument has gone through extensive pressure- and temperature tests. Its characteristics are stored in the instruments internal EEPROM. The µP of the LEO 2 reads the characteristic values and calculates therefrom the pressure to an accuracy of < 0,1 %FS at room temperature. 

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. 

LEO 2 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. 

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 ranges > 30 bar are calibrated in a sealed gauge mode at ambient pressure. 

_“Swivel”_ 

- CONT The instrument turns off 15 Min. after the last key function. Activating CONT (Continuous) deactivates this automatic turn-off. 

UNITS All standard instruments are calibrated in bar. The pressure can be indicated in the the following units: bar, mbar/hPa, kPa, MPa, PSI, kp/cm[2] . 

LEO 2 has 7/16” UNF male thread and is delivered complete with an O-ring seal swivel fitting which allows LEO 2 to be rotated through 360 °. Only minimal tightness is needed to seal up to 300 bar. Process pressure connection is G 1/4” male. 

Optional accessories:  - Protective rubber covering - Carrying bag 

_Adapter G 1/4”_ 

|**SpeCifiCationS**||||
|---|---|---|---|
|Pressure Ranges, Resolution,|Range|Resolution|Overpressure|
|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|
|Accuracy RT (room temperature) *<br>Total Error Band (0…50 °C) *<br>Storage- / Operating Temperature<br>Compensated Temperature Range|< 0,1 %FS<br>< 0,2 %FS<br>-20…70 °C / 0…50 °C<br>0…50 °C|||
|Supply|3 V battery, type CR 2430|3 V battery, type CR 2430||
|Battery Life|1’000 hours continuous operation|||
|Pressure Connection|7/16”-20 UNF (adapter G 1/4” included)|||
|Protection, CEI 529<br>Diameter x Height x Depth<br>Weight|IP 65<br>59 x 95 x 32 mm<br>≈125 g|||



**Leo 2 ei** 

**intrinsically safe version, 94/9/Ce (ateX 100a)** 

Classification: Ex II 1 G   EEx ia IIC T6 or T5 Certification File: LCIE 01 ATEX 6001 X 

The EEx ia version of LEO 2 incorporates an additional protection switch. Functions, ranges and accuracy are identical to the standard version. 

* Includes linearity, repeatability, hysteresis, temperature error and resolution of the display. Does not include Zero stability. 

Subject to alterations 

KELLER AG für Druckmesstechnik St. Gallerstrasse 119 CH-8404 Winterthur KELLER Ges. für Druckmesstechnik mbH Schwarzwaldstrasse 17 D-79798 Jestetten 

Tel.  +41 (0)52 - 235 25 25 Tel.  +49 (0)7745 - 9214 - 0 

Fax  +41 (0)52 - 235 25 00 Fax  +49 (0)7745 - 9214 - 60 

03/08 

Companies approved to ISO 9001:2000 

www.keller-druck.com 

|Order Code|Description|BrandPartNo|Pressure Range|
|---|---|---|---|
|2253624|MANOMETER,-1 TO 30BAR,0.1%|LEO2/-1...30BAR/81021|-1 to 30 Bar|
|2253626|MANOMETER,-1 TO 3BAR,0.1%|LEO2/-1...3BAR/81021|-1 to 3 Bar|
|2253625|MANOMETER,300BAR,0.1%|LEO2/300BAR/81021.1|300 Bar|
|7244137|MANOMETER,700BAR,0.1%|LEO2/700BAR/81021.2|700 Bar|