Description
Westinghouse PX-14 N-635507 Voltammeter I-50 DC Amperes Volts Meter 0-150V 0-30A
The Westinghouse PX-14 is a vintage multi-range DC panel meter combining volt and ampere measurement in a single analog instrument. Branded on the dial as the Voltammeter I-50, it uses a passive moving-needle (D'Arsonval) movement that requires no external power source — the deflection is driven entirely by the measured current through the circuit. A front-panel push switch selects voltage mode, while the labeled terminal posts on top configure the current or voltage range in use.
Specifications & What's Included
- Manufacturer: Westinghouse
- Type: PX-14
- Style: N-635507
- Series: 170-7990
- Meter name: Voltammeter I-50
- Measurement: DC Amperes or DC Volts (direct current)
- Voltage ranges: 0–3 VDC, 0–15 VDC, 0–150 VDC
- Current ranges: 0–15 A, 0–30 A DC
- Full-scale movement: 10 mA (F.S. = 10 M.A.)
- Power required: None — passive instrument
- Display: Analog moving-needle dial with dual-arc scale
- Controls: Push switch for voltage mode; multiple labeled terminal posts on top
- Housing: Black Bakelite enclosure with rubber feet
- Includes: Meter unit only — no cables or accessories
Applications
The Westinghouse Voltammeter I-50 is a classic DC panel instrument from the mid-20th century era of Bakelite-housed analog meters, when Westinghouse, General Electric, and Simpson were the dominant American meter makers. Panel meters of this type were used in electrical test benches, switchboard monitoring, battery charging stations, industrial DC power systems, and educational laboratory setups to provide a direct visual readout of current and voltage without requiring any auxiliary power. The multi-range terminal-post design was standard practice before digital multimeters — operators would connect to different terminal pairs to select the appropriate scale for the measurement at hand. Today these instruments are sought by vintage electrical collectors, steam-punk and industrial-aesthetic enthusiasts, educational institutions restoring period lab equipment, and engineers who prefer the continuous analog readout of a panel meter over a digital display for certain DC monitoring applications.
This Westinghouse PX-14 N-635507 Voltammeter I-50 DC panel meter has been tested and is in good working order. The needle moves freely and the dial face is clear and fully legible. The black Bakelite housing is intact with light surface wear and minor scuffing consistent with age and prior use — no cracks or chips noted. All terminal posts are present. Please view our photo set and contact us if you have any questions.
Warranty Information
Additional Information
Brand: |
Westinghouse |
Model: |
PX-14 |
MPN: |
N-635507 |
Secondary Model: |
Voltammeter I-50 |
Series: |
170-7990 |
SKU: |
47551 |
Type: |
Analog DC Voltammeter / Panel Meter |
Measurement Type: |
DC Voltage and DC Current (Amperes) |
Voltage Range: |
0-3V, 0-15V, 0-150V DC |
Current Range: |
0-15A, 0-30A DC |
Full Scale Current: |
10 mA (F.S. = 10 M.A.) |
Power Required: |
None — passive instrument |
Display Type: |
Analog moving-needle dial (D'Arsonval type) |
Terminals / Switching: |
Multiple terminal posts; push switch for volts |
Form Factor: |
Benchtop / Portable Panel Meter |
Housing Material: |
Black Bakelite |
Seller Notes: |
Unit only — no cables or accessories included. |
Country/Region of Manufacture: |
United States |
Condition Notes: |
This Westinghouse PX-14 N-635507 Voltammeter I-50 has been tested and is in good working order. Bakelite housing shows light age wear; dial face is clear and legible. All terminals present. Please view our photos and contact us with any questions. |
California Prop 65 Warning: |
WARNING: This product can expose you to chemicals including lead and lead compounds, and DEHP (a phthalate), which are known to the State of California to cause cancer and birth defects or other reproductive harm. Go to P65Warnings.ca.gov |