Digital Test Manometer LDM70
LDM 70-E25: Accuracy ±0.125% f.s. / LDM 70-K50: Accuracy ± 0.25% f.s.
• Battery powered, rugged, rotatable housing (DS 70 mm)
• 4.5-digit LC display (digit height 11 mm)
• 6-digit additional display to show the selected pressure unit (height 7.5 mm)
• Pressure unit switchable (PSI-bar-mbar-mWs-inHg-cmHg-mmHg-kPa-MPa)
• Easy configuration via three push buttons
• Ingress protection IP 65
• Ranges from 0/1.45 psi to 0/8700 psi ( 0/100 mbar to 0/600 bar)
• MIN and MAX value storage
The display is continously rotatable so that a clear readability is garanteed even in unusual installation positions. The LDM 70 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 LDM 70 can be set to factory default values via menu.
- Pressure Ranges (see tab. on back page):
Type LDM 70-E25: all standard ranges, gauge pressure, absolute pressure, vacuum and compound ranges
Type LDM 70-K50: all standard ranges 0/1.6 bar to 0/400 bar - Nominal case diameter: DS 70 mm / 27.6 inches
- Accuracy (as per IEC 60770):
Type LDM 70-E25: ±0.25% f.s (ranges # 5.8 psi / 400 mbar: ±0.5% f.s.)
Type LDM 70-K50: ±0.5% f.s. - Measuring rate: 5 per second
- Thermal error (zero-point and span within temperature compensated range):
Type LDM 70-E25: Tolerance band: Ranges ≤ 0.1 bar: ≤± 2.0% f.s.; average TC: ±0.3% f. s. / 10 K
Ranges ≤ 0.25 bar: ≤ ±1.5% f.s.; average TC: ±0.2% f.s. / 10 K
Ranges ≤ 0.4 bar: ≤ 1.0% f.s.; average TC: ±0.14% f.s. / 10 K
Ranges ≤ 1.0 bar: ≤ 0.1% f.s.; average TC: ±0.1% f.s. / 10 K
Ranges >1.0 bar: ≤ ±0.75% f.s.; average TC: ±0.07% f.s. / 10 K
Type LDM 70-K50: ≤ ±0.2% f.s. / 10 K - Temp. compensated range:
Type LDM 70-E25: Ranges ≤ 0.4 bar: 0...50°C; ranges >0,4 bar: 0...70°C
Type LDM 70-K50: -25...+85°C - Permissible temperatures:
Medium: -4/+185°F=-20/85°C
Ambient: -4/+158°F=-20/70°C
Storage: -22/+176°F=-30/80°C - Material display housing: PA 6.6 polycarbonate
- Material pressure port: stainless steel 1.4571 / 1.4435
- Material diaphragm:
Type LDM 70-E25: stainless steel 1.4435
Type LDM 70-K50: ceramic Al2O3 96% - Material seals: wetted seals: FKM (optional: EPDM, NBR, others on request)
- Display: LCD 1.57" x 1.18"= 40 x 30 mm; 4 1/2 digit 7-segment-main display, digit height 11 mm,
Indication range ±19999; 6-digit 14-segment additional display, digit height 7.5 mm - Electromagnetic compatibility: emission and immunity according to EN 61326
- Mechanical stability: vibration: 5 g RMS (20...2000 Hz); shock: 100 g / 11 msec.
- Supply: 3.6 V lithium batteries, 2 pcs. (type 1/2 AA)
- Data memory: EEPROM (non-volatile)
- Ingress protection: IP 65
- Installation position: any (the LDM 70 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 for LDM-70-E25 ranges <1 bar
- Other data: weight 300 g; AD-converter solution: 10 Bit;mech. operational life: > 100 x 106 pressure cycles; battery life: app.. 5 years in standby mode
- Pressure port: 1/2" BSP male, 1/4" BSP male, 1/2" NPT male, 1/4" NPT male