LR-Cal LDM 70-E25
Reference digital pressure gauge
Accuracy ±0.125% BFSL, pressure ranges up to 600 bar
Description
LR-Cal LDM 70-E25 description
The display is via a clearly visible 4½-digit LCD display. The front cover with the display can be rotated, which ensures good readability even under unusual connection conditions. Operation is menu-driven via three membrane keys. In addition to displaying information on the measuring range, various pressure units and the number of decimal places can be set, as well as min. and max. values. Zero and span can be recalibrated, and the instrument can be reset to factory settings at any time.
The LR-Cal LDM 70-E25 digital fine-measurement manometer is ideally suited for on-site use together with our LR-Cal pressure test pumps. In conjunction with our LR-Cal pressure comparison test pumps (spindle pumps), it is also very suitable for operation in the laboratory and in the workshop.
Features:
- Compact design (NG 70)
- Battery operated
- Accuracy ±0.125% BFSL (corresponds to ±0.25% FS according to IEC 60770)
(Measuring ranges <400 mbar: ±0.25% BFSL, corresponds to ±0.5% FS according to IEC 60770) - 4½-digit LCD display (digit height 11 mm)
6-digit additional display to show the pressure unit - Pressure unit selectable: bar/mbar, psi, mWC, inHg, cmHg/mmHg, kPa/MPa
- Good vibration and shock resistance
- Protection class IP 65
- Rotatable display, thus good readability in all positions
- Pressure ranges from 0...100 mbar to 0...600 bar, as well as vacuum and absolute pressure
- Integrated minimum and maximum value memory
Specification
LR-Cal LDM 70-E25 specification
Nominal case diameter | DS 70 |
Accuracy *) | ±0.125% BFSL (ranges ≤0.4 bar ±0.25% BFSL) (equal to ±0.25% FS (ranges ≤0.4 bar ±0.5% FS) according to IEC 60770) |
Pressure port | 1/2" BSP male or 1/4" BSP male or 1/2" NPT male or 1/4" NPT male |
Measuring rate | 5 per second |
Thermal effects (Offset and Span) |
Range -1...0 bar: Tolerance band ≤±0.75 FS in compensated range -20...+85°C Range ≤0.4 bar: Tolerance band ≤±1% FS in compensated range 0...70°C Range >0.4 bar: Tolerance band ≤±0.75% FS in compensated range -20...+85°C |
Permissible temperatures | Medium: -20...+85°C; Ambient: -20...+70°C; Storage: -30...+80°C |
Housing material | PA 6.6 Polycarbonate |
Pressure port material | Stainless steel 1.4404 |
Diaphragm material | Stainless steel 1.4571 |
Gasket material | FKM |
Display | LCD, visible size 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 stability | Vibration: 5 g RMS (20...2000 Hz); Shock: 100 g / 11 ms |
Power supply | 2 x 3.6 V ½ AA lithium batteries |
Data memory | EEPROM (non-volatile) |
Ingress protection | IP 65 |
Installation position | any (the instrument is calibrated in vertical position with pressure port down. If this position is changed on installation, there can be slight deviations in the zero-point. |
Weight | 300 g |
A/D-converter resultion | 10 bit |
Operational life | >100 x 106 pressure cycles |
Battery life time | approx. 5 years in standby mode |
*) ±0.125% BFSL (maximum non-linearity acc. to Best Fit Straight Line method) is equal to ±0.25% FS acc. to IEC 60770 (limit point adjustment (non-linearity, hysteresis and repeatability)).
Pressure ranges
LR-Cal LDM 70-E25 pressure ranges
Measuring range [bar] | Pressure type |
Permissible overload [bar] |
0...0.1 *) | gauge | 0.5 |
0...0.16 *) | gauge | 1 |
0...0.25 *) | gauge | 1 |
0...0.4 | gauge or absolute | 2 |
0...0.6 | gauge or absolute | 5 |
0...1 | gauge or absolute | 5 |
0...1.6 | gauge or absolute | 10 |
0...2.5 | gauge or absolute | 10 |
0...4 | gauge or absolute | 20 |
0...6 | gauge or absolute | 40 |
0...10 | gauge or absolute | 40 |
0...16 | gauge or absolute | 80 |
0...25 | gauge or absolute | 80 |
0...40 | gauge or absolute | 105 |
0...60 | gauge or absolute | 105 |
0...100 | gauge or absolute | 210 |
0...160 | gauge or absolute | 600 |
0...250 | gauge or absolute | 1,050 |
0...400 | gauge or absolute | 1,050 |
0...600 | gauge or absolute | 1,250 |
-1...0 | gauge (compound) | 5 |
-1...+0.6 | gauge (compound) | 10 |
-1...+1.5 | gauge (compound) | 10 |
-1...+3 | gauge (compound) | 20 |
-1...+5 | gauge (compound) | 40 |
-1...+9 | gauge (compound) | 40 |
-1...+15 | gauge (compound) | 80 |
-1...+24 | gauge (compound) | 80 |
-1...+39 | gauge (compound) | 105 |
*) Accuracy at this measuring ranges ±0.25% BFSL (equal to ±0.5% FS according to IEC 60770)
Scope of standard supply
LR-Cal LDM 70-E25 scope of standard supply
- Digital pressure gauge (reference measuring device) LR-Cal LDM 70-E25
- 2 batteries 3.6 V (½-AA), built-in
- Operating manual DE+EN
LR-Cal LDM 70-E25 options + spare parts
Absolute pressure range
Option (surcharge):
Absolute pressure measurement
(instead of relative pressure)
Only available for correspondingly marked measuring ranges.
Free of oil and grease
Option (surcharge):
Cleaned free of oil and grease
but NOT suitable for oxygen!
Factory certificate
Option (surcharge):
Factory calibration certificate (traceable)
Can only be ordered together with new instrument.
11 test points (incl. zero point)
(Measuring range 600 bar: 5 test points)
Spare batteries
Spare part:
Battery ½-AA, 3.6 volt, lithium
For one LR-Cal LDM 70-E25 device 2 pieces are needed.