Electronic Pressure Calibrator
Model LR-Cal LDM 70-E25
Digital Reference Pressure Gauge
Features of the digital test pressure gauge LR-Cal LDM 70-E25:
- compact, rotatable housing (DS 70 mm)
- Battery powered
- Accuracy ±0.125% BSFL (equal to ±0.25% acc. to IEC 60770)
(Ranges < 400 mbar: ±0.25% BFSL = ±0.5% FS acc. to IEC 60770) - 4.5 digit LC diisplay (digit height 11 mm)
- 6 digit additional display to sho the selected pressure unit (height 7.5 mm)
- Pressure units selectable: psi, bar/mbar, mWs, inHg, cmHg/mmHg, kPa/MPa
- Easy configuration via three push-buttons
- Ingress protection IP 65
- Ranges from 0...1.6 bar to 0...400 bar plus compound ranges and absolute pressure ranges
- MIN and MAX value memory
Description
LR-Cal LDM 70-E25 Description
The display is continously rotatable so that a clear readability is garanteed even in unusual installation positions. The LR-Cal LDM 70-E25 can be operated menu-driven via three push-buttons. Besides showing information about the nominal pressure range as well as minimal and maximal pressure of the process, several pressure units (psi, bar, mbar, mWC, inHg, cmHg, mmHg, kPa, MPa) and the position of the decimal point can be set. The instruments zero and span can be calibrated, and the LR-Cal LDM 70-E25 can be set to factory default values via menu.
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 1/2 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)).
Ranges
LR-Cal LDM 70-E25 Pressure Ranges
| Pressure Range [bar] | Kind of pressure | overpressure [bar] |
| 0...100 mbar *) | gauge | 0.5 |
| 0...160 mbar *) | gauge | 1 |
| 0...250 mbar *) | gauge | 1 |
| 0...400 mbar | gauge or absolute | 2 |
| 0...0.6 bar | gauge or absolute | 5 |
| 0...1 bar | 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 | 1050 |
| 0...400 | gauge or absolute | 1050 |
| 0...600 | gauge or absolute | 1250 |
| -1...0 | gauge | 5 |
| -1...+0.6 | gauge | 10 |
| -1...+1.5 | gauge | 10 |
| -1...+3 | gauge | 20 |
| -1...+5 | gauge | 40 |
| -1...+9 | gauge | 40 |
| -1...+15 | gauge | 80 |
| -1...+24 | gauge | 80 |
| -1...+39 | gauge | 105 |
This pressure range have an accuracy of ±0.25% BFSL (equal to ±0.5% FSO acc. to IEC 60770)
By standard, this instruments are supplied with gauge pressure reading. If stated in above table, as option also absolute pressure reading is possible (extra charge).
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PRODUCTS Pressure Pressure calibration Electronic Pressure Calibrators LR-Cal LDM 70-E25
PRODUCTS Pressure Pressure calibration Electronic Pressure Calibrators LR-Cal LDM 70-E25