IS-DHK Intrinsically Safe Drum Alarm – High Level, No Feed Tube, Threaded Collar Mount

Description IS-DHK Intrinsically Safe Drum Alarm – High Level, No Feed Tube, Threaded Collar Mount The IS-DHK Series is a rugged intrinsically safe high-level drum alarm designed to prevent chemical and fuel overfills in hazardous industrial locations. Unlike feed-tube alarms, the IS-DHK mounts directly onto the drum’s 3/4-inch threaded collar and requires no internal liquid pipe, making it ideal for rapid drum changeouts and applications where product purity or transfer speed is critical. Powered by an intrinsically safe replaceable battery, the IS-DHK provides audible and visual notification at the point of use, allowing operators to halt liquid transfer before overflow occurs. Available in Polypropylene (PP) and 316 Stainless Steel (SS), this alarm supports a wide range of industrial chemicals and hydrocarbons in hazardous areas. Key Features: ✅ Intrinsically safe design for use in hazardous locations when installed per manufacturer guidance ✅ No feed tube required – direct threaded collar installation on 55-gallon drums ✅ High-level alarm prevents drum overfills during transfer and dispensing operations ✅ Battery powered – ideal for remote, mobile, or temporary drum setups ✅ Polypropylene or Stainless Steel wetted parts for broad chemical compatibility ✅ Local audible/visual alarm indication at the drum for immediate operator awareness ✅ Built for oil & gas, chemical, mining, and industrial process environments ✅ Optional relay output for safe-area indication when used with an approved I.S. barrier �� Package Options: �� IS-DHK-PP – Polypropylene alarm for chemical and general industrial liquids �� IS-DHK-SS – 316 Stainless Steel alarm for fuels, solvents, and hydrocarbons IS-DHK Technical Specifications: Specifications: Enclosure materialAluminum Buzzer volume98dB @ 2ft. Battery capacity2400 mA-hr Operating temp (ambient)(-40 to 60ºC (-76-140ºF) Maximum temp. (liquid)149ºC [300ºF] Ingress protectionIP65 Lens materialLexan Stainless steel316 except retaining rings are type PH 15-7 Mo Current consumption during alarm30mA Relay current80mA max. Battery chemistryLithium Thionyl Chloride Battery pack voltage7.2VDC Lithium weight1.2g (per pack of 2 cells) Cable capacitance (if applicable)30pf/ft STAINLESS DRUM MOUNTING COLLAR Body material316 SS Body thread pitch¾” NPT Thumbscrew head material304 SS Thumbscrew head pitchM8 x 1.25 Thumbscrew head materialPhenolic thermoset resin. (bakelite) FLOAT SWITCHES Float S.G (stainless)0.75 Float S.G (stainless)0.6 Float S.G  (PP)0.6 Certifications & Compliance: �� Intrinsically safe design suitable for use in hazardous areas when installed with approved components and barriers �� Class I Division 1 suitability when installed according to the manufacturer’s documentation and applicable standards �� Documentation set available: operating instructions, control drawing, battery datasheet, and wiring schematics �� Certificate of Conformance �� Download Datasheet Applications of IS-DHK Intrinsically Safe Drum Alarms: �� Chemical drum overfill protection in hazardous locations �� Fuel and solvent transfer stations in refineries and terminals �� Hazardous waste collection points and drum storage areas �� Portable or mobile drum-based dispensing systems �� Oil & Gas well-site chemical dosing skids �� Tank farm and process unit temporary storage drums What’s in the Box? �� 1× IS-DHK Drum Alarm (material selected at purchase: PP, SS, or KK*) �� 1× Intrinsically Safe Battery Pack �� 1× Operator Instructions / Quick Start Guide �� Optional: Relay Output Module, CoC, and additional documentation if ordered Ordering & Shipping Details �� Lead Time: 3-4 weeks �� Shipping Terms: Worldwide shipping available with standard and expedited options �� Payment Options: Credit Card, PayPal, Wire Transfer, and Net Terms for approved accounts ��️ Technical Support: Our hazardous-area specialists can assist with model selection and integration into your safety system FAQs: Does the IS-DHK require a feed tube inside the drum? No. The IS-DHK Series is specifically designed as a no-feed-tube high-level alarm. It mounts on the threaded drum collar and detects high level without an internal pipe. If your application requires a feed pipe, consider the IS-DHP Series. Is the IS-DHK suitable for hazardous locations? Yes. The IS-DHK is an intrinsically safe high-level drum alarm intended for use in hazardous areas when installed in accordance with the manufacturer’s instructions, applicable standards, and with any required intrinsic safety barriers. Can I connect the alarm to a remote control panel? Yes. With the optional relay output module and appropriate intrinsic safety barrier, the alarm can be interfaced to a safe-area control panel, PLC, or annunciator for remote indication. Which material should I choose? Select Polypropylene (IS-DHK-PP) for many general chemicals and industrial liquids, or Stainless Steel (IS-DHK-SS) for hydrocarbons, fuels, and more demanding process applications. The IS-DHK-KK Kynar (PVDF) version is intended for aggressive chemicals but may be obsolete; confirm availability with our team.