
Armored Level Gauge
Flat glass level gauge in reflex or transparent design for direct viewing of process fluids under severe conditions.
- Pressure
- Up to 250 bar
- Temperature
- Up to 300 °C
- Range
- Up to 4000 mm
Tank level and flow instrumentation, made in Mumbai since 1973

Sigma Instruments CompanyMade in Mumbai
Compact acrylic or glass gauges for visual indication of oil and transmission fluid levels in small tanks.
Technical dataStandard limits
Units can be built to your specified pressure, temperature, range and material.
Product overview
Sigma oil level gauges give a clear, at a glance reading of oil and other transmission fluids. They work on a simple principle: connected to the tank, the liquid in the gauge settles at the same level as the liquid in the tank.
A solid block of transparent acrylic forms the oil chamber, graduated as required. It connects to the tank through a single limb or through two connections, and includes a vent and a drain. This design suits low pressure and low temperature duty.
A rugged, compact gauge with a toughened borosilicate glass tube held between metal end blocks with banjo bolts and sealed with O rings. A slotted steel guard surrounds the glass to protect it from accidental damage, and the gauge mounts parallel to the tank to form a closed loop.
Request a quote
Share the fluid, pressure, temperature, range and connections you need, and our engineers will come back with a solution and a quotation.