Heating Oil Delivery Tank Gauge
Safe, accurate delivery is the heart of the heating-oil business — and it depends on trustworthy level measurement at every stop. For over 75 years, Krueger Sentry Gauge has manufactured reliable instrumentation essential for the safe loading, unloading, and delivery of heating oil, built in Green Bay, Wisconsin from American-made components in compliance with the Buy American Act.
Heating oil is a low-viscosity fuel oil, chemically similar to diesel and motor oil, and most of our gauges are made from stainless steel (316L), with plastics and other chemically resistant materials available. Our in-house machine shop lets us size and fit a gauge to your tanks and trucks. Our heating-oil line includes:
- Leak Detection Gauges
- Liquid-Level Gauges
- Overfill Alert Gauges
Heating Oil Tank Gauge Applications
From the bulk plant to the delivery truck to the customer’s tank, heating-oil operations rely on accurate readings to run efficiently and avoid costly overfills. Our experience helps us recommend the right gauge and options for each point in the chain. Common applications include:
- Bulk storage tanks
- Delivery-truck tanks
- Residential furnace & boiler tanks
- Commercial building tanks
- Waste-oil collection
- Backup generator tanks
Accessories & Repair Parts for Tank Gauges
Over more than 75 years, we’ve developed a full set of accessories and upgrades that help heating-oil operators get more life and reliability out of every gauge. Options that pair well with heating-oil delivery include:
Gauge Alarms
Add audible or visual alarms to alert operators as a tank approaches full, helping prevent overfills during delivery. A simple upgrade that pays for itself the first time it stops a spill.
LED At-A-Glance Remote Monitor
Our LED At-A-Glance Remote Monitor brings the tank reading to where operators can see it, making it easier to manage inventory and schedule deliveries.
Gauge Guard & Lock-Nut Upgrades
Gauge guards and lock-nut upgrades protect the gauge from weather, sun, and everyday knocks, keeping it accurate and readable for years.
Calibrations & Repair Kits
Repair kits let you refresh the top components of a working gauge instead of replacing the whole unit, and are available for all gauge types in a range of materials.
Solid Glass Tops
Solid glass tops make a Krueger gauge nearly impervious to weather, sun, and impact — a simple upgrade that keeps the reading clear and the gauge dependable for years.
Lock-Nut Upgrades
Lock-nut upgrades keep the gauge secured and correctly oriented in demanding delivery service, so it stays accurate and readable over the life of the tank.
Custom Sizing & Extensions
Our in-house machine shop builds gauges to your exact tank depth and extension length, so the fit is right whether you’re gauging a delivery truck or a bulk storage tank.
Calibration & Testing Reports
We provide calibration and functionality testing documentation with clear inspection procedures, so technicians can verify a gauge is reading true and keep records for compliance.
Built for the Deliveries People Count On
When the temperature drops, heating-oil dealers keep homes and businesses warm — and their customers count on every delivery being safe and accurate. At Krueger Sentry Gauge, we’re proud that our American-made instrumentation helps heating-oil operators load, haul, and deliver with confidence.
Frequently Asked Questions
Got questions? Get answers instantly by browsing our FAQs below, chatting with our AI assistant, or reaching out to our team directly.
What do we use as a part number?
At Krueger Sentry, we don’t use classic part numbers. Everything is description-based. Refer to your product’s Spec Page (materials options) and the Order Info (tank measurements) page for more information. Example Part Number: – H-2-48 + 12 w/glass (H signifies the type of gauge, 2 is the size opening, 48 is the tank depth, 12 is the extension, and everything after that is the options you want to be included.
Which liquid level monitor is the right choice for me?
When choosing a liquid level gauge, different factors can change which sight gauge is best for you. The basic factors that motivate people to buy each type of gauge are as follows.
- Economical sight gauge- At-A-Glance Direct Reading
- Versatile sight gauge- Therma Gauge
- Small tank monitor, under 12 inches – The L Gauge
- Standard Barrel Level Gauges – Barrel Gauge
- Up to 12 feet of mechanical remote capability – Remote Reading Gauge
- Durability – GFK Gauge – you can achieve this durability by ordering a therma gauge with a gauge guard as well.
How do I find or locate a Krueger Sentry Gauge distributor?
Search our Preferred Distributor Page. Don’t see a distributor you want to use? Call me. Lee Geurts: 920-434-8860 ext 204
Which sight gauge do you recommend most often to your customers?
I try to sell the Therma gauge to most people. It is nearly as inexpensive as the At A Glance Gauge, but you have more control over your swing arm. Plus, this level gauge can be fitted with the most options.
What is the difference between the Type D At a Glance Level Gauge and the Type H Therma Level Gauge?
The Swing arm on the Type D Gauge is fixed. When you thread in the gauge, the swing arm spins inside the tank and will end up facing in a random direction. The swing arm on the Type H Gauge can be aimed in the exact direction you want it to swing, and when you thread the gauge in it does not spin inside the tank.
How long is the swing arm on a level gauge?
The arm is always half the depth of your tank.
How do I order a custom-size level gauge?
In order to get an accurate gauge for your tank, we take two measurements into consideration. First, we measure, in inches from top to bottom, what the distance is from empty to full, known as tank depth. Second, the distance from the full mark to the gauge fitting on top is also known as an extension length. Sometimes this measurement comes out to zero.
How do I prevent my tank gauge from getting damaged by the sun and weather?
Ordering upgraded options such as Solid Glass Tops and Gauge Guards will make your Krueger Gauge nearly impervious to weather, sun, and damage.
Can I repair just the top of my Tank Gauge, or do I need to replace the whole thing?
If your gauge still seems functional, you can replace just the top components by ordering the corresponding repair kit. Repair Kits are available for all gauge types and come in a variety of material options for added durability, which can be found in the Tank Gauge Accessories.
What is the recommended maintenance/testing for Krueger Leak Gauges?
Krueger Sentry provides a Leak Gauge Functionality / Calibration Testing Report with inspection procedures for inspectors/technicians. Please contact us with any questions.
