Circular Chart Recorder- Series 7214D
Measures Low Differential Pressure, Selectable Recording Times.
Model CR30 Circular Chart Recorder continuously indicates, monitors, and records critical differential pressure measurements down to ±0.1" water column. Permanently record measurements on 8" diameter chart paper for exceptional data resolution. Selectable ranges and recording times allow user to customize recording parameters to fit the application.
Large digital display allows quick visual checks of real time differential pressure information. Display minimum and maximum readings for spot checks. The CR30 recorder features locking keypad and door, and audio and visual alarm indication with programmable delay. Unit includes CR773 chart paper, two pens, 6 ft (2 m) tubing, AC adapter, and instruction manual.
| Accuracy: | ±0.002 IN WC, ±2% of reading |
|---|---|
| Range: | -0.10 to + 0.10, -0.15 to + 0.25, 0 to 0.15, 0 to 0.25 IN WC (selectable) |
| Max. Pressure: | 1" IN WC |
| Recording Times: | 1, 7, 14, and 31 day (selectable) |
| Average Response Time: | 20 seconds for 60% step change |
| Chart Size: | 8" (20.3 cm) diameter |
| Display Resolution: | 0.001 all ranges |
| Calibration: | User calibration of zero |
| Ambient Operating Temperature: | 32 to 122°F (0 to 50°C), 0 to 90% RH (non-condensing) |
| Power Supply: | 120 VAC adapter (included) or
four "D" batteries (response time is slower when using battery power
source, batteries are suggested for back-up power) |
| Mounting: | Free standing or wall mountable |
| Dimensions: | 10 ½"H x 13 7/8"W x 2 ½"D (26.7 x 35.2 x 6.4 cm) |
| Weight: | 7 lbs (3.2 kg) |
No. CR720, chart paper, 0 to 150, 24-hour, 100/pk
No. CR722, chart paper, 0 to 250, 24-hour, 100/pk
No. CR770, chart paper, 0 to 150, 7-day, 100/pk
No. CR773, chart paper, ±0.10 IN WC, 7-day, 100/pk
No. CR820, Replacement pens (3 red & 3 blue)