Đồng hồ chuẩn áp suất LR- Cal LDM 70-E25
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Đồng hồ chuẩn áp suất LR- Cal LDM 70-E25

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Electronic Digital Pressure Gauge Model LR- Cal LDM 70-E25

The Digital Pressure Gauge LR- Cal LDM 70-E25 offers

  • Compact design (NG 70)
  • Battery operation
  • Accuracy ± 0.125% FS after BFSL (equivalent to ± 0.25% FSO IEC 60770)
  • 4 1/2-digit LCD display (digit height 11 mm)
  • 6-digit auxiliary display for displaying the print unit
  • Pressure unit selectable: bar / mbar, psi, mwc, inHg, cmHg / mmHg, kPa / MPa
  • Good vibration and shock resistance
  • Degree of protection IP 65
  • Rotatable display, therefore good readability in all positions
  • Range from 0 .. 100 mbar to 0 .. 600 bar, as well as vacuum and absolute pressure
  • Integrated minimum value and maximum value memory

LR- Cal LDM 70-E25 Description

 

  • Data is displayed on a highly visible LCD display 4 1/2-digit. The front cover of the display is turned, so is also in unusual installation conditions to ensure a good readability. Operation is menu-controlled via three buttons. In addition to displaying information on measurement range different units and the number of decimal places can be set, as well as minimum and maximum values. Zero and span are recalibrated; the unit may at any time be reset to the factory settings.
  • The Digital Pressure Gauge  LR- Cal LDM 70-E25 , together with the Calibration Test Pump  LR- Cal LPP 30 and  LR- Cal LPP 60 (pneumatic) and  LR- Cal LPP 700 and  LR- Cal LPP 1000 (hydraulic), excellent for suitable for on-site use. In conjunction with the Vergleichsprüfeinrichtungen LR- Cal LSP (spindle pumps) actually he is very good also for operation in the laboratory and in the workshop.

 

Dải đo

LR- Cal LDM 70-E25 Ranges

 

Measuring range [bar]

Print

Permissible operating pressure [bar]

0 .. 0.1

relatively

0.5

0 .. 0.16

relatively

0.5

0 .. 0.25

relatively

1

0 .. 0.4

relatively

1

0 .. 0.6

relatively

3

0 .. 1

relatively

3

0 .. 1.6

relative or absolute

6

0 .. 2.5

relative or absolute

6

0 .. 4

relative or absolute

20

0 .. 6

relative or absolute

20

0 .. 10

relative or absolute

20

0 .. 16

relative or absolute

60

0 .. 25

relatively

60

0 .. 40

relatively

100

0 .. 60

relatively

140

0 .. 100

relatively

340

0 .. 160

relatively

340

0 .. 250

relatively

600

0 .. 400

relatively

600

0 .. 600

relatively

1000

-1 ... 0

relatively

1

-1 ... +0.6

relatively

3

-1 ... +1.5

relatively

6

-1 +3 ...

relatively

20

-1 ... +5

relatively

20

-1 ... +9

relatively

20

-1 ... +15

relatively

60

-1 ... +24

relatively

60

-1 ... +39

relatively

100

 

Thông số kỹ thuật

LR- Cal LDM 70-E25 Specification

 

Case diameter

NG 70

Accuracy BFSL

± 0.125% FS (ranges <= 400 mbar: ± 0.25% FS) 
corresponds to ± 0.25% FS (ranges <= 400 mbar: ± 0.5% FS) according to IEC 60770

Pressure connection

G 1/2 B, G 1/4 B, 1/2 "NPT or 1/4" NPT

Measuring rate

5 measurements per second

Effect of temperature

Zero and span the temperature compensated range 
error band: 
Areas <= 0.1 bar: <= ± 2.0% FS, avg. TK: ± 0.3% of full scale / 10 K 
ranges <= 0.25 bar: <= ± 1.5% FS; aver. TK: ± 0.2% of full scale / 10 K 
ranges <= 0.4 bar: <= ± 1%; aver. TK: ± 0.14% of full scale / 10 K 
ranges <= 1.0 bar: <= 0.1% FS; aver. TK: ± 0.1% of full scale / 10 K 
ranges> 1 bar: <= ± 0.75% FS; aver. TK: ± 0.07% of full scale / 10 K

Compensated TemperatureRange

Ranges <= 0.4 bar: 0 .. 50 ° C; areas> 0.4 bar: 0 .. 70 ° C

Temperature range

Medium: -20 ... +85 ° C ambient temperature: -20 ... +70 ° C, storage: -30 ... +80 ° C

Material display housing

PA 6.6 Polycarbonate

Material pressure connection

Stainless steel 1.4571 / 1.4435

Material Diaphragm

Stainless steel 1.4435

Material of seals

Ranges <= 40 bar: FKM / EPDM ranges> 40 bar: NBR

Display

LCD, visible range 40x30 mm, 4 1/2-digit 7-segment main display, digit height 11 mm, range ± 19999; 6-digit 14-segment additional display, digit height 7.5 mm

Electromagnetic Compatibility

Emission and immunity according to EN 61236

Mechanical strength

Vibration: 5 g RMS (20 .. 2000 Hz) Shock: 100 g / 11 ms

Supply

3.6 V lithium batteries, 2 pieces (Type 1/2 AA)

Backup

EEPROM (non-volatile)

Protection

IP 65

Mounting position

any (the devices are sinkrecht with lower pressure connection calibrated). When changing the installation there can at pressure ranges <1 bar have minor offsets

Weight

300 g

A / D converter resolution

10 bit

Mechanical life

> 100 × 10 5 cycles

Battery life

about 5 years in standby mode

 

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