2038 Portable Frequency Meters,Portable Needle-indicator Frequency Meters
Needle-type indicator frequency meter (differential system)
Six (6) measuring ranges are available
Portable Needle-indicator Frequency Meters
Model 2038 uses a transducer to convert a measured frequency to a proportionate DC current, then shows the current as a DC
current reading. The transducer, combined with a high sensitivity moving coil type indicator based on YOKOGAWA's
proprietary taut-band suspension system, provides a level of performance not possible with conventional frequency meters.
In addition to frequency measurements for research labs and schools, the 2038 can be used as a standard for measurement
control labs and field tests.
Features
A wide range of frequencies (45~500 Hz) can be measured with the broad selection of models.
True equivalent scale enables measurement of continuous
frequency changes.
A wide range of voltages (50~300 V) can be used.
RMS response (differential system) minimizes waveform effects.
Anti-shock structure provided by taut-band design.
Specifications
Operating principle : Needle-indicator frequency meter (differential system)
Class : JIS C 1102 (see table below)
Operating position : Horizontal
Rated voltages : 120/240
120 V ... Can be used between 50 and 135 V.
240 V ... Can be used between 130 and 300 V.
Scale length : Approximately 135 mm (deflection angle: 85°)
Consumed power : 120 V ... Approximately 1.3 VA 240 V ... Approximately 2 VA
Operating temperature and humidity ranges : 0 to 40°C, 25 to 80%RH
Storage temperature and humidity ranges : -10 to 50°C, 25 to 80%RH
Insulation test : Between electrical circuit and the case DC 500 V/More than 10MΩ
Voltage test : Between electrical circuit and the case AC 2000V for 5 seconds
External dimensions and weight : 197 × 181 × 92 mm, approximately 1.8 kg
Standard accessory : Instruction Manual (1)
| Model | Measurement range | Accuracy |
Portable Frequency Meters | 2038 31 | 45～65 HZ | ±0.2% |
2038 32 | 20～100 HZ | ±1.0% |
2038 03 | 100～300 HZ | ±0.5% |
2038 04 | 300～500 HZ | ±0.5% |
Notes
1. If the voltage exceeds 300 V, externally connect an instrument
voltage transformer 2261 or 2262 (page 9).
2. Not JIS-approved.
3. Tolerance is "percentage" with respect to maximam scale value.
For 203831, 65 ±0.2% = ±0.13Hz.
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