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SPECIFICATIONS EXTECH RPM33: COMBINATION CONTACT/LASER PHOTO TACHOMETER
- General Specifications
Time base: Quartz crystal
Display: 5‐digit LCD Display
Laser light source: Class 2 laser < 1mW power; Wavelength is 630 to 670nm
Detecting Distance: 50 to 500mm (2 to 20″)
Sampling Time: 0.5 seconds (over 120 rpm)
Tachometer accuracy: ± (0.05% reading + 1digit)
Memory Extech RPM33: Measurement data are stored in ‘reading sets’. A reading set consists of one (1) instantaneous measurement plus MIN/MAX/AVG readings. Ten (10) ‘reading sets’ are available per measurement session
Operating Conditions: 0 °C to 50 °C (32 °F to 122 °F); RH 80% Max
Power Supply: 9V battery
Power Consumption: 45mA DC approximately
Weight: 151g (5.3oz.)
Size: 160 x 60 x 42 mm (6.2 x 2.3 x 1.6″)
Laser light source: Class 2 laser < 1mW power; Wavelength is 630 to 670nm
Detecting Distance: 50 to 500mm (2 to 20″)
Sampling Time: 0.5 seconds (over 120 rpm)
Tachometer accuracy: ± (0.05% reading + 1digit)
Memory Extech RPM33: Measurement data are stored in ‘reading sets’. A reading set consists of one (1) instantaneous measurement plus MIN/MAX/AVG readings. Ten (10) ‘reading sets’ are available per measurement session
Operating Conditions: 0 °C to 50 °C (32 °F to 122 °F); RH 80% Max
Power Supply: 9V battery
Power Consumption: 45mA DC approximately
Weight: 151g (5.3oz.)
Size: 160 x 60 x 42 mm (6.2 x 2.3 x 1.6″)
- Measurement Range Specifications
| Range | Resolution | Accuracy | |
| Photo‐Tachometer | |||
| Revolutions per minute | 2 to 99,999 RPM | 0.1 rpm (2.0 to 9999.9 RPM) 1 rpm (> 9999 rPm)* | 0.05% of reading + 1 digit
|
| Frequency | 0 to 1666 Hz | 1 Hz | |
| Contact‐Tachometer | |||
| Revolutions per minute | 2 to 19,999 rpm | 0.1 rpm (2.0 to 9999.9 RPM) 1 rpm (> 9999 rPm)* | 0.05% of reading + 1 digit |
| Surface Speed Extech RPM33 | 0 to 2000 meters per minute | 1 m/min | |
| 0 to 78,720 inches per minute | 1 in/min | ||
| 0 to 6560 feet per minute | 1 ft/min | ||
| 0 to 2186 yards per minute | 1 yd/min | ||
| Length (using circumference wheel attachment) | 0.1 to 1000 meters | 0.1 meter
| |
| 3.9 to 39,370 inches | 0.1 inch up to 9999.9 1 inch > 9999 | ||
| 0.3 to 3280 feet | 0.1 inch | ||
| 0.1 to 1093 yards | 0.1 yard | ||
| Revolutions (counter for custom sized wheels) | 0 to 99,9999 Revolutions | 1 revolution (REV) | |
| Frequency | 0 to 1666 Hz | 1 Hz | |
Introduction Extech RPM33
Quickly measure RPM, surface speed and length with one tool
The RPM33 provides both contact (2 to 19,999 rpm) and non-contact (2 to 99,999 rpm) RPM measurements for enhanced versatility. Laser guided non-contact RPM measurements taken up to 1.6-foot (500mm) away for added safety. Readings are displayed on the large five-digit backlit LCD. Store/recall 10 data sets in memory with 4 parameters (measurement, max, min and average). Comes with contact wheel for linear surface speed (0.2 to 6560 feet/minute; 0 to 1999.9 meters/minute) or RPM measurements, 9-volt battery, reflective tape, carrying case, and user manual.
Features Extech RPM33
– Large 5 digit backlit LCD display
– Microprocessor based with quartz crystal oscillator to maintain high accuracy
– Store/recall 10 data sets in memory with 4 parameters (measurement, max, min and average)
– Provides wide RPM (photo and contact) and Linear Surface Speed/Length (contact) measurements
– Laser guided for greater distance non-contact measurements up to 1.6ft (500mm)
– Complete with contact wheel for rpm or linear surface speed/length, 9V battery, reflective tape and soft case
– Microprocessor based with quartz crystal oscillator to maintain high accuracy
– Store/recall 10 data sets in memory with 4 parameters (measurement, max, min and average)
– Provides wide RPM (photo and contact) and Linear Surface Speed/Length (contact) measurements
– Laser guided for greater distance non-contact measurements up to 1.6ft (500mm)
– Complete with contact wheel for rpm or linear surface speed/length, 9V battery, reflective tape and soft case
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