The model 289 is ideal for those who need to make qualitative static surveys at the most affordable price.
It features a high-speed LED bar graph that quickly shows the magnitude and polarity of the static charge. A simple-to-operate zero button and conductive case (for obtaining a ground connection) help to make this one of the easiest instruments you will ever operate.
Features：
High Speed 16 Segment Bar-Graph Display — Accurately shows trends faster than most analog or digital displays
Monroe Quality
Inexpensive
Reliable
Easy to Use
Pocket-sized Convenience
Exclusive Monroe Electronics Two- year Warranty
Range:±100V to ±10kV @1.0”
For Higher Voltages:
kV Distance Multiply reading by
0-20 4.0inches 2
0-40 8.5inches 4
For more sensitive measurments use at 0.1” spacing and divide readings by 10. (1kV F.S.)
Accuracy:±10% at the trip point
Resolution:1/3 decade
Display:16-segment LED bar graph
Battery:9 volt, Eveready #216 or equivalent NEDA #1604
Battery life:Up to 40 hours continuous operation
Dimensions:4.2x2.4x0.9 inches (10.7x6.1x2.3cm)
Weight:
4 oz (113gm) including battery
