| Model |
CVM-780 Contact Voltmeter |
| Basic Description |
High impedance contact voltmeter with active probe |
| DC Characteristics |
Intended Operating Range: 0 to ±525 volts |
| Resolutions |
1 volt, 3 digit display |
| Circuit Accuracy |
<±1%
Note: Maximum measurement range is ±575 Volts for brief periods |
| Dynamic Characteristics |
Response Time: Approximately 1ms for a voltage step of 200V at the probe tip to the monitor output.
Digital display update: 3 readings per second. |
| Input charge/measurement |
Approximately 100 femptocoulomb/volt (1.0x10-13 C/V) |
| Input Impedance |
=1014 ohm in parallel with <1pF Capacitance |
| Monitor Output |
Scale Factor: 10,000:1; 100uV/V (Compatible with Prostat PGA-710B Autoanalysis System™) |
| Recording Deviation |
Typically < ±10 volts at ± 500 Volts |
| Measurement Tolerances |
When measuring DC voltage reference
500 V Less or Equal to ±2 V
100 V Less or Equal to ±2 V
50 V Less or Equal to ±2 V
10 V Less or Equal to ±1 V
When measuring floating conductors:
500 V Less or Equal to ±5% ±2 Counts
100 V Less or Equal to ±5% ±2 Counts
50 V Less or Equal to ±5% ±2 Counts
10 V Less or Equal to ±10% ±2 Counts |
| Probe Tips |
Metal:Nominally 0.95 and 0.45 inch Ceramic 0.90 and 0.40 inch ±0.05” |
| Portable Operation |
Approximately 3.5 Hours on Full Battery Charge
(Operates during Battery Charge) |
| Power |
4 each Energizer NH15-2500 Nickel-Metal Hydride rechargeable batteries (AA Size) |
| Charger |
Universal 90 to 264 Volts, 47 to 63 Hz |
| Charger |
Universal 90 to 264 Volts, 47 to 63 Hz |
| Meter Dimension (without boot) |
6.5 in (16.5 cm) L x 4.25 in (10.8 cm) W x 1.57 in (4.0 cm) H |
| Meter Dimension (with boot) |
7.5 in (19.1 cm) L x 4.25 in (10.8 cm) W x 2.36 in (6.0 cm) H |
| Probe Dimension |
8.9 in (22.5 cm) L x 1.5 in (3.7 cm) W x 0.78 in (2.0 cm) H |
| Meter Weight |
1.5 lbs, with boot |
| Probe Weight |
3.6 oz |