
Electrogage Liquid Level Indicator
Electrogage™
Product Status: NOT ACTIVE
The Electrogage has been replaced by the Electrogage ECO
Manuals, repair and drop-in replacement remain available. Contact support.
Liquid Level Indicator / Controller
Product Overview
The Electrogage is a bubbler level indicator and controller for any system that needs electrically controlled, displayed liquid level. Pressure in the bubbler line moves a mercury column in a precision manometer; as the mercury rises and falls, it makes and breaks contacts built into the indicating column.
Forty-one labeled control contacts, one every 3 inches of water column, drive relays or PLC inputs directly. Select a contact, wire to it, and no calibration is needed.
Each unit is machined from solid acrylic, calibrated by the critical fill method and sealed with microporous filters, with accuracy better than ±1/2% of full scale, 100% repeatability and no dead band.
It mounts up to 1,000 feet from the measured liquid without loss of accuracy.
To ensure optimal function and condition of the Electrogage, recommended filter replacement is as follows:
- The two inline compressor filters (Part #FIL- 10A) should be replaced every 6-8 months. Filter discoloration may indicate that a replacement is needed.
- The charcoal filter (Part #FIL-2P) attached to the Electrogage should be replaced every 18-24 months.

Typical Wiring for an Electrogage
Technical Specifications
- Dimensions: 12”H x 5.5” W x 1.5”D
- Control Circuit Wiring: 16 gauge minimum, type MTW or THW, rated for 300 volts.
- Air Compressor Recommendation: Minimum of .6 SCFH with a maximum air pressure of 5.5 PSIG (152 inches of water column)
- Accuracy: +/- ½% of full scale with 100% repeat accuracy
- Pressure Range: Maximum 15 psi
- Contact Rating: 5 VA, 24 VAC Maximum
- Range: 0 to 10’ water Consult factory for other ranges.
- Contains 0.47 lbs of 99.99% Pure Mercury

