| General Specifications |
| Frequency Meter Specifications |
| Accuraccy |
45-55Hz ± 0.3Hz (120V-240V) |
| |
55-65Hz ± 0.3Hz (120V-240V |
| |
380-420Hz ± 1.2Hz (120V-240V) |
| Movement |
Small core magnet, self-shielding |
| Suspension |
Pivot and jewel |
| Tracking |
±3% |
| Shielding |
Calibration is unaffected by magnetic panel mounting |
| Center Scale Value |
50/60/400Hz |
| Power Consumption |
1.6VA |
| Max. Input Voltage (10 sec) |
150, 120V normal; 280, 240V normal |
| Dial |
Each dial arc is calibrated to track the specific type of movement used |
| Operating Temperature |
-4ºF to +149ºF (-20ºC to +65ºC) |
| Case |
High density black plastic |
| Pointer |
Knife-edge, with black matte finish |
| Scale Length |
Model 2182: 1.88" (47.2mm) |
| Model 2183: 2.48" (63.0mm) |
| Model 2184: 3.68" (93.5mm) |
| Net Weight |
Model 2182: 5oz (0.14kg) |
| Model 2183: 6oz (0.17kg) |
| Model 2184: 9oz (0.26kg) |
| Warm-up Time |
5 minutes |
| Watt Meter Specifications |
| Accuracy |
±2% F.S.; Compensated Meters: ±3% F.S. |
| Movement |
Dynamometer |
| Suspension |
Pivot and jewel |
| Tracking |
±3% |
| Shielding |
Calibration is unaffected by magnetic panel mounting |
| Response Time |
1.5 seconds maximum |
| Overload (1 sec.) |
10 times F.S. |
| Overload (Continuous) |
1.5 times F.S. |
| Repeatability |
2% |
| Dial |
Each dial arc is calibrated to track the specific type of movement used |
| Resistance |
±15% of meter impedance |
| Operating Temperature |
-4ºF to +149ºF (-20ºC to +65ºC) |
| Case |
High density black plastic |
| Pointer |
Knife-edge, with black matte finish |
| Scale Length |
Model 2173: 2.48" (63.0mm) |
| Model 2174: 3.68" (93.5mm) |
| Net Weight |
Model 2173: 9oz (0.26kg) |
| Model 2174: 13oz (0.37kg) |
| Specifications for Other Meters |
| Accuracy |
±2% F.S. Iron Vane, ±3% F.S. Rectified |
| Movement |
Models 2152, 2153, 2154: Iron-vane, magnetically damped. 2121 and 2121T: small core magnet, all others Annular, self-shielding |
| Suspension |
Pivot and jewel except for “T" models which have taut band movement |
| Tracking |
±3% |
| Shielding |
Calibration is unaffected by magnetic panel mounting |
| Response Time |
1.5 seconds maximum |
| Overload (1 sec.) |
10 times F.S. |
| Overload (Continuous) |
1.5 times F.S. |
| Repeatability |
2% pivot and jewel, 0.5% taut band |
| Dial |
Each dial arc is calibrated to track the specific type of movement used |
| Resistance |
±15% of meter impedance |
| Operating Temperature |
-4ºF to +149ºF (-20ºC to +65ºC) |
| Case |
High density black plastic |
| Pointer |
Knife-edge, with black matte finish |
| Scale Length |
Model 2121 & 2121T: 1.25" (31.7mm) |
| Model 2152: 1.86" (47.2mm) |
| Model 2122, 2122T, 2142: 2.07" (52.7mm) |
| Model 2153: 2.48" (63.0mm) |
| Model 2123, 2123T, 2143: 2.75" (69.8mm) |
| Model 2154: 3.68" (93.5mm) |
| Model 2124, 2124T, 2144: 4.09" (103.9mm) |
| Net Weight |
Model 2121 & 2121T: 2oz (0.06kg) |
| Model 2152: 5oz (0.14kg) |
| Model 2152: 5oz (0.14kg) |
| Model 2122, 2122T, 2142: 7oz (0.20kg) |
| Model 2123, 2123T, 2143: 8oz (0.23kg) |
| Model 2154: 9oz (0.26kg) |
| Model 2124, 2124T, 2144: 11oz (0.31kg) |