2% Accurate, Precision RF Power Sensors
4028 Series, Directional RF Power Sensors are high accuracy sensors for use in high power LCD, TFT and Solar processing and other precision high power applications. Intended for use with the industry standard Bird Precision Laboratory Power Meter Model 4421, these products can provide a threefold improvement in long-term unit-to-unit accuracy.
Features
- Achieve tighter, more consistent RF power measurements for improved yield.
- ±2% accuracy at specified calibration frequencies and power levels.
- Direct, plug-in operation with the industry standard Bird Model 4421 RF Power Meter.
- Multiple sensors provide for measurement of 1 kW to 25 kW over a 250 kHz to 30 MHz frequency range.
Model Selections
| Model |
Freq. Range |
RF Power |
Cal. Freq. (Typical) |
| 4028A250K |
250-400 kHz |
1.0-20 kW |
250, 400 kHz |
| 4028A400K |
400-550 kHz |
1.0-20 kW |
400 kHz |
| 4028A2M |
1.5-2.5 MHz |
1.0-25 kW |
1.8, 2.0, 2.17 MHz |
| 4028A3M |
2.5-3.5 MHz |
1.0-25 kW |
2.5, 3.2, 3.5 MHz |
| 4028A4M |
3.5-4.5 MHz |
1.0-25 kW |
3.5, 4.0 MHz |
| 4028A10M |
10-15 MHz |
1.0-25 kW |
10.0, 13.56, 15.0 MHz |
| 4028A25M |
25-30 MHz |
1.0-25 kW |
25.76, 27.12, 28.48 MHz |
| 4028B3M |
2.5-4 MHz |
1.0-25 kW |
2.5, 3.2, 3.5 MHz |
| 4028B10M |
10-15 MHz |
1.0-25 kW |
10.0, 13.56, 15.0 MHz |
| 4028C10M |
10-15 MHz |
500W - 50kW |
10.0, 13.56, 15.0 MHz |
Item Name
2% Accurate, Precision Power Sensors
Insertion Loss
0.05 dB max. (with female 7-16 DIN connectors)
Connectors
A Series: Customer specified from QC connector, appropriate for frequency and power
B Series: 1 5/8” EIA Flanged
C Series: 3 1/8” EIA Flanged
Max Allowable Terminating VSWR
2.00:1
Calibration Power Level
1.7 kW, typical
Calibration Technique
Frequency-specified calibration factors stored in nonvolatile memory in each sensor.
Accuracy - Outside Cal Power and Frequency
± 3.0% (2 ó)
Accuracy - RFL
= Fwd accuracy + (Fwd Power/ 10^{directivity/10})
Accuracy - VSWR
Calculated from FWD and RFL power (VSWR = [1+Sqrt(Pr/PF)] / [1-Sqrt(Pr/Pf) / [1-Sqrt (Pr/Pf)])
Sampling Rate
2 readings / second (nominal)
Operating Power
Supplied by power meter via sensor cable
Operating Temperature
0 to 50 °C (32 to 122 °F)
Storage Temperature
-20 to +70 °C (-4 to + 158 °F)
Humidity
95% non-condensing
Altitude
10,000 ft. (3,000 m) max.
Repeatability - Multiple Measurements-Single Sensor
±0.3% (95% c.l.) (with female 7-16 DIN connectors)
Dimensions
(L x W x H)
A Series: 4.7” x 3.2” x 3.8” (120 x 82 x 97 mm) -without connectors
B Series: 6.8” x 3.5” x 4.8” (171 x 89 x 121 mm)
C Series: 8.0” x 5.2” x 6.4” (203 x 131 x 162 mm)
Weight
A Series: 1.7 lbs (.8 kg)
B Series: 3.3 lbs (1.5 kg)
C Series: 7.3 lbs (3.3 kg)