• daadinstruments@gmail.com
  • +91 9810780146
  • +91 9958700156
  • daadinstruments@gmail.com
  • +91 9810780146

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FLAME PROOF HEAD PRESSURE SWITCH & LOW PRESSURE MODEL
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FLAME PROOF HEAD PRESSURE SWITCH & LOW PRESSURE MODEL

Parameter Specification
Features Fixed / Field Adjustable (External) / Differential Adjustment – External / Internal
Accuracy ± 1% / CL 1
Repeatability ±0.5% / CL 0.5, On Raising / On Falling
Mounting Bottom / Back Panel / 2″ Pipe Mounting Bracket
Enclosure Die Cast Aluminium – Flame Proof – IIA IIB IIC T6 ZONE 1 & 2
Wetted Parts Bottom Body, Diaphragm
MOC SS316 / Monel / Inconel / PTFE
Process Connection 1/4″ BSP (F) – Standard, 3/8″, 1/2″ BSP / NPT
Options Mounting Bracket with bolt – Steel Plated / 2″ Pipe Mounting Bracket, Diaphragm Seal, Syphon, Snubber, Cooling Tower
Max. Process Temp. 150°C
Ambient Temp. -20 .. 65°C
Switch Type & Rating 1SPDT, 2SPDT, DPDT, 5A / 250 VAC / 0.2A 24VDC
Micro Switch Standard: Micro Switch with silver contact, Low/High Dead Band, Hermetically / Environment Sealed / Gold Contact
Ranges 10 mbar … 25 bar
Differential Fixed / Adjustable
Cable Entry 3/4″ ET / 1/2″ NPT Double Compression Gland – Flame Proof – Brass / SS

Description

The Model FHP-LP500 Flame Proof Head and Low Pressure Switch is specifically designed for safe and reliable pressure monitoring in hazardous environments where explosive gases or vapors are present. Constructed with a robust flameproof enclosure complying with international explosion-proof standards (such as ATEX, IECEx), this switch ensures safe operation in oil & gas, chemical, and petrochemical industries. It accurately detects both high head pressure and low pressure conditions, providing critical system protection.

Built from corrosion-resistant materials with high-quality internal components, the FHP-LP500 offers adjustable set points and a wide pressure range for versatile application. The switch is equipped with certified flameproof electrical contacts (SPDT or DPDT) and standard NPT/BSP threaded process connections for seamless integration. This model combines safety, precision, and durability, meeting stringent regulatory requirements for hazardous area instrumentation.

FLAME PROOF HEAD PRESSURE SWITCH & LOW PRESSURE MODEL

FLAME PROOF HEAD PRESSURE SWITCH & LOW PRESSURE MODEL

What People Say About Our Product


Customers consistently praise our temperature and pressure gauges for their accuracy, durability, and ease of installation. From HVAC professionals to industrial users, many highlight the clear readings and reliable performance under tough conditions. Whether for home systems or heavy-duty applications, our gauges are trusted for getting the job done right.

A temperature and pressure (T&P) gauge is used to monitor both the temperature and pressure levels within systems like boilers, water heaters, HVAC units, and other pressurized equipment. It helps ensure the system is operating safely and efficiently.

Installation typically involves threading the gauge into a designated port on the system (usually a 1/4" or 1/2" NPT fitting). Always ensure the system is depressurized before installation and use thread sealant to prevent leaks. Refer to the product manual for specific instructions.

For best performance, it’s recommended to check calibration annually, especially in industrial or high-usage environments. Replace the gauge if you notice inaccurate readings, a stuck needle, or visible damage to the dial or housing.

Our Product Review

This pressure gauge is spot-on accurate and durable. I installed it on a boiler system for a commercial client, and it’s been holding up perfectly under high pressure and heat. The stainless steel casing is rugged, and the glycerin fill really helps reduce needle vibration. Definitely a professional-grade product worth the price

Industrial Pressure Gauge

Very reliable temperature readings and the digital display is easy to read even in low light. I use it for monitoring HVAC systems and it has made diagnostics much quicker. The only downside is that the battery compartment is a bit tricky to open, but overall, it’s a solid product.

Digital Temperature Gauge

I’ve been using this temperature and pressure gauge for a few months on my residential boiler system, and it’s performed consistently well. The readings are accurate, and the dual-scale display is easy to interpret. It was easy to install and fit perfectly into the existing port. Build quality feels solid with a brass connection and clear lens. So far, it's been reliable under both high-temp and high-pressure conditions. I’ll be purchasing more for future installs.

Temperature & Pressure Gauge

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