Drum High Level Alarms

A Better Overfill Alarm...

• Always on duty because the liquid feed tube is permanently attached to the alarm unit.
• Loud warbling tone cuts through the loudest industrial noise.
• Rugged. Built for rough, wet and corrosive environments.
• A functional check is simple - just loosen the cord grip and lift the Tank Alarm out.
• Transfer to a new drum is easy: No need to screw in threads or fiddle around with tube connections, just drop in.
• Safe. 9 volt circuit in a waterproof enclosure.
• No wetted metal parts.
• It can go anywhere because it is battery operated. No need for power outlets.
• Uninterruptible battery power lasts for years.Lithium battery always included.

OVERFILL ALARM for drums lets you pump liquids into chemical drums and containers. The high level Drum Alarm is quick and easy to install - lets you forget about overfilling forever. Simply drop it into a drum and you're ready to go! No wiring.

• The Mounting Cap on the DHL-1 Drum Alarm makes it easy to switch to a new drum when the old one is full since you don't have to disconnect tubing while you unscrew a cap - it just drops over the bung. The cap keeps debris out of the drum, and suppresses vapors even liquid ammonium hydroxide is not a problem.
• Attached Feed Tube on the DHL-1 Drum Alarm makes sure the alarm stays with the alarm. Your tubing is secured with a foolprooof all-polypropylene compression fitting to eliminate chance of spillage due to hose disconnection.
• Float is protected inside a rigid pipe so it can get knocked around without worry. Screen protects float from debris on model DHL-1.
• Uninterruptible battery power works through power failures, can't come unplugged, or be defeated. And because the Tank Alarms don't use any power until alarming, the batteries last for years. further discussion.
• Any Depth. Standard level alarm depths available up to 5 ft. Custom depths have been made 20 feet deep.
• Different Materials: PVC, Polypropylene, PVDF, Stainless Steel.
• Different models
  • DHL-1 includes a 1/2" PVC liquid feed pipe to pump liquid into a drum. The cap slips over a standard 2" drum bung. Alarm depth is fixed at 1" below top of the drum. Polypropylene float and PVC pipe.
  • DHA-5 liquid feed pipe and a cap like the DHL-1 but depth can be adjusted with a thumbscrew from 1-5". Polypropyelene wetted parts. (float and pipe)rew. Polypropyplene wetted parts. (float and pipe).
  • DHP-7 has a liquid pipe and mounts on the drum with a 2" NPS threaded plug. Working depth is adjustable from 1-7 inches using a thumbscrew. Polypropylene wetted parts.
  • DHK-7 is an alarm only and does not have a liquid pipe. Mounts on the drum in the 3/4" threaded bung. Can be adjusted from 2" to 7" maximum depth from the top. All polypropylene wetted parts.
  • DHQ-7 is an alarm only with no liquid pipe. Mounts on a drum using a 2 inch NPS plug. (the fine threads) Depth adjustment from 2-7 inches from the top. Polypropylene wetted parts. Can be adapted to the coarse threads with a buttress adapter. (see options)
• Everything Included - Every unit includes a threaded bushing to adapt the 1" NPT threads for the cord grip to 2" NPT. threads. Lithium battery is included.