All CCS DUAL-SNAP Pressure and Temperature switch models are available with a choice of SPDT or DPDT micro-switches including Gold contacts for Intrinsically safe applications. All certified explosion-proof models have hermetically sealed electrical assemblies as standard.
Electrical termination/connection options*, all switches can be furnished to suit individual applications. We offer a choice of approved junction boxes, DIN connectors [weatherproof, compact models] or free leads.
On corrosive or sour service, wetted process parts can be supplied as standard in 316 Stainless steel, Monel or Hastelloy all in full compliance with the latest NACE [National Association of Corrosion Engineers] specifications and a choice of corresponding elastomer seals are available.
Adjustable Pressures from 38 mm H20 to 1100 Bar G [1.5" H20 to 16000 PSIG]. Vacuum from 2.79 to 724 mm Hg. Temperatures from -34 to 343°C.
How They Work
Typical 'Trace Switch' designs suffer from a number of basic operating and reliability problems. The CCS DUAL-SNAP design using the disc-spring operating system, is designed to counter these disadvantages.
1. The heart of the design
It's a convex disc spring with a centre hole. It snaps to concave under pressure, and it snaps back when pressure is released.
2. Back up the disc spring with a fully adjustable helical spring
This unique application of the disc spring overcomes common switch problems. The helical spring can be compressed or elongated and locks firmly at any load. This permits precise adjustment over an extremely wide range of set points.
3. Add a limp diaphragm adjustment system and a switch
The diaphragm is not a sensing element. It simply seals the media and transfers pressure to the disc spring, which responds instantaneously when system pressure reaches the set point.
4. Complete the system with components suitable for specific pressures, fluids and environments.. and you have a Wide Range DUAL-SNAP Pressure Switch with these advantages:
Set points stay set - not sensitive to shock, vibration, temperature variations, or other ambient conditions. No "tracing" of fluctuating pressures - no "teasing" of the electrical element. The switch is either "on" or "off". Reduces the adverse effects of pump ripple, contact chatter, fatigue, premature wear, and other common switch problems. Maximum-life expectancy with lifelong reliability and precise repeatability assured. An exceptional range of set points in one switch.
604 Series
Pressure/Differential Pressure/Vacuum:
- Wide range Diaphragm and Piston versions
- Externally adjustable set-point
- Weatherproof - IP66
- Pressure ranges 0.05 to 345 Bar [0.8 to 5000 PSI]
- Vacuum range 88 to 724 mmHg
- DP range 0.05 to 5.2 Bar [0.8 to 75 PSID]
- Process wetted parts standard options: Aluminium, Brass, 316SS, Monel and Hastelloy.
646 Series
Pressure/Differential Pressure/Vacuum:
- Wide range Diaphragm and Piston versions
- Externally adjustable set-point
- Explosion-proof certified to UL, CSA, BASEEFA & ATEX. IP66
- Pressure ranges 0.08 to 345 Bar [1.2 to5000 PSI]
- Vacuum range 88 to 724 mmHg
- DP range 0.08 to 5.2 Bar D [1.2 to 75 PSID]
- Process wetted parts standard options: Aluminium, 316SS, Monel and Hastelloy.
6900/6904/6905 Series
Pressure/Differential Pressure:
- Compact size wide range Diaphragm and Piston versions
- Flush Diaphragm
- Externally adjustable set-point
- Weatherproof and Explosion-proof options - IP67Explosion-proof models certified to UL, CSA, CENELEC & ATEX
- Pressure ranges 0.21 to 1100 Bar [3 to 16000 PSI]
- DP range [1.2 to 5.2 Bar D] 1.2 to 75 PSID
- Process wetted parts options: Aluminium, 316SS, Monel and Hastelloy.
611 Series
Pressure/Vacuum:
- Compact size low range Diaphragm
- Internally adjustable set-point
- Weatherproof and Explosion-proof options - IP66
- Explosion-proof models certified to UL and CSA
- Pressure ranges 0.1 to 12.4 Bar [1.5 to 180 PSI]
- Vacuum range 101 to 724 mmHg
- Process wetted parts options: Aluminium, Brass and 316 Stainless steel.
672/673/674 Series
Differential Pressure:
- Low, medium and high range Diaphragm
- Factory set and externally adjustable set-point models
- Weatherproof and Explosion-proof IP67
- Explosion-proof certified to UL, CSA, CENELEC & ATEX
- Ranges 0.48 to 55 Bar D [7 to 800 PSID]
- Process wetted parts options: Aluminium, 316SS.
6401/6403
Pressure/Differential Pressure/Vacuum:
- Wide range Diaphragm and Piston versions
- Externally adjustable set-point
- Explosion-proof certified to UL, CSA, CENELEC & ATEX IP66
- Integral Junction box
- Pressure ranges 0.08 to 448 Bar [1.2 to 6500 PSI]
- Vacuum range 88 to 724 mmHg
- DP range 0.08 to 5.2 Bar [1.2 to 75 PSID]
- Process wetted parts standard options: 316SS, Monel and Hastelloy.