Archive for category: Pressure Gauge

Series DH3 Digihelic® Differential Pressure Controller

Digital indicators are for the difference between two pressures. The Gages and Switches are ideal for pressure, velocity, flow applications, and single pressure. The Series DH3 Digihelic® Differential Pressure Controller is a 3-in-1 instrument possessing a digital display gage, control relay switches, and a transmitter with current output all packed in the popular Photohelic® gage style housing.

Combining these 3 features allows the reduction of several instruments with one product, saving inventory, installation time and money. The Digihelic® controller is the ideal instrument for pressure, velocity and flow applications, achieving a 1% full-scale accuracy on ranges down to the extremely low 0.25″ w.c. to 2.5″ w.c. full scale. Ranges of 5″ w.c. and greater maintain 0.5% F.S. accuracy. Bi-directional ranges are also available.

The Series DH3 Digihelic® controller allows the selection of pressure, velocity or volumetric flow operation in several commonly used engineering units. 2 SPDT control relays with adjustable dead bands are provided along with a scalable 4-20 mA process output.

Programming is easy using the menu key to access 5 simplified menus which provide access to security level; selection of pressure, velocity or flow operation; selection of engineering units; K-factor for use with flow sensors; rectangular or circular duct for inputting area in flow applications; setpoint control or setpoint and alarm operation; alarm operation as a high, low or high/low alarm; automatic or manual alarm reset; alarm delay; view peak and valley process reading; digital damping for smoothing erratic process applications; scaling the 4-20 mA process output to fit your applications range and field calibration.

Specification

Service

• Air and non-combustible, compatible gases.

Wetted Materials

• Consult factory

Housing Material

• Die-cast aluminum case and bezel

Accuracy

• ±1.5% for 0.25″ and ±0.25″ w.c. ranges. Ranges 0.5″ to 5″ w.c. and corresponding bi directional (except ±2.5″ w.c.) ±1%; All other ranges: ±0.5% @ 77°F (25°C) including hysteresis and repeatability (after 1 hour warm-up)

Stability

• < ±1% per year

Pressure Limits

• Ranges ≤ 2.5 in w.c.: 25 psi; ±2.5″, 5 in w.c.: 5 psi; 10 in w.c.: 5 psi; 25 in w.c.: 5 psi; 50 in w.c.: 5 psi; 100 in w.c.: 9 psi

Temperature Limits

• 32 to 140°F (0 to 60°C)

Compensated Temperature Limits

• 32 to 140°F (0 to 60°C)

Thermal Effects

• 0.020%/°F (0.036/°C) from 77°F (25°C). For 0.25″ and ±0.25″ w.c. ranges: ±0.03%/°F (±0.054%/°C)

Power Requirements

• 12 to 28 VDC, 12 to 28 VAC 50 to 400 Hz

Power Consumption

• 3 VA max

Output Signal

• 4 to 20 mA DC into 900 Ω max

Zero & Span Adjustments

• Accessible via menus

Response Time

• 250 ms (damping set to 1)

Display

• Backlit 4 digit LCD 0.4″ height LED indicators for set point and alarm status

Electrical Connections

• 15 pin male high-density D-sub connection. 18″ (46 cm) cable with 10 conductors included

Process Connections

• 1/8″ female NPT. Side or back connections

Mounting Orientation

• Mount unit in vertical plane

Size

• 5″ (127 mm) OD x 3-1/8″ (79.38 mm)

Weight

• 1.75 lb (794 g)

Agency Approvals

• CE

Switch Type

• 2 SPDT relays

Electrical Rating

• 1 A @ 30 VAC/VDC

SetPoint Adjustment

• Adjustable via keypad on the face

1109 Process Pressure Gauge Ashcroft

A pressure gauge is a mechanical instrument designed to measure the internal pressure and/or vacuum of a vessel or system. Trerice Pressure Gauges are offered in a variety of styles, sizes, and wetted part materials to meet the demands of standard and special applications.

Most Trerice Pressure Gauges are constructed with a bourdon tube sensing element. When the sensing element is subjected to pressure, it flexes and the resulting motion is transmitted as a measurement through a mechanical movement to the dial face pointer

The Ashcroft 1109 pressure gauge is a rugged instrument and an ideal choice when an ASME gauge with a solid front stainless steel case is a requirement. This model combines elements of reliability, performance, and safety. An ideal product that serves extremely well on challenging installation points.

FEATURES of Pressure Gauge Ashcroft

• PLUS!™ Performance dampens vibration, shock and pulsation effects
• Solid front design with full blowout back
• Epoxy coated system offers superior corrosion resistance
• Rugged design

 TYPICAL USES

• Oil and Gas
• Offshore Oil Rigs
• Chemical and Petrochemical Plants
• Refineries
• Waterblasting / Water Jetting Equipment
• Specialized OEM Equipment

SPECIFICATIONS

Accuracy

• ±0.5% of span (ASME B40.100, Grade 2A)

Size

• 100mm
• 160mm

Ranges

• Vacuum, Compound 15 to 100,000 psi

Process Connection Location

• Lower

Process Connection Size

• 1 ⁄4NPT Male
•  1 ⁄2 NPT Male
•  1 ⁄4 High-pressure tubbing

Case Style

• Solid front with pressure relief back

Movement

• Adjustable

Window Material

• Glass (STD.)
• Safety glass (STD.)
• Shatterproof glass (OPT.)

Dial

• White aluminum with black markings

Pointer

• Aluminum

Weather Protection

• IP64
• IP65 Hermetically sealed

Dampening Options

• PLUS! ™ Performance, throttle screw, dampeners, capillary, diaphragm seals and snubbers

Mounting

• Stem

Approvals

• CRN

Bourdon Tube

• 316L SS
• Inconel for ranges greater than 40,000 psi

Process Connection

• 316 SS

Joints

• Welded

Case

• 304 SS

Ring

• Cam Lock 300 SS

Back Cover

• 304 SS

Datasheet

Rosemount Smart Pressure Gauge

The Rosemount Smart Pressure Gauge features a robust design with industry-proven sensor technology to resist common traditional gauge failures. This pressure gauge provides up to 10 years of maintenance-free operation and replaces mechanical components for more reliable readings and a higher overpressure limit.

Features

• Sensor technology replaces mechanical parts to offer up to 10 years of maintenance-free operation
• Provides overpressure protection for reliable pressure readings
• Dual layers of process isolation deliver plant and personnel safety
• Local status indication confirms proper gauge operation
• Engineered with a large 4.5-in. (114 mm) face for easy field visibility
• Full range of process connections are available, including male-NPT, DIN, manifolds and seal assemblies

Accessories

Rosemount Pressure Gauges can be configured with manifold and remote seal options. Manifolds are pre-assembled and leak-checked with 2-valve and block-and-bleed configurations for easy installation.  Seals (direct and remote) that function as an additional isolation barrier against hot/cold, corrosive or viscous processes are also available pre-assembled to the gauge. Mounting brackets, extended warranties, and NACE and calibration certifications are also available.

Reduce Traditional Failures

Reduce traditional gauge failures by eliminating bourdon tubes and linkages with Rosemount Pressure Gauges. Harsh process environments, such as vibration, overpressure, extreme temperatures, and corrosion, can cause bourdon tubes to stretch, freeze, break and experience issues from unexpected damage. With the digital design and proven sensor of Rosemount pressure gauges, you can reduce gauge failures and ensure accuracy and performance.

Wireless Capabilities

Built with Wireless HART® capabilities, the Wireless Pressure Gauge allows you to quickly troubleshoot process conditions, gain real-time insight and communicate from remote locations via your wireless network. This device provides an update rate of 1 – 60 minutes and offers up to 10 years of battery life for long-lasting performance.

Local Status Indication

Know the health of your pressure gauge with Local Status Indication capabilities. This feature monitors the overall health of the device and alerts you of current gauge status with an LED light. This LED light blinks every second indicating status conditions, conveying the device is working in good condition or providing a warning of low battery, device malfunction or loss of power.

Technical Data

Measurement Range

• Up to 4,000 psi (275.8 bar) Gage, Up to 10,000 psi (689.5 bar) Absolute

Display/Interface

• 4.5 in. (114 mm)

Housing Material

• Engineered polymer, NEMA® 4X, and IP66/67

Burst Pressure

• 11,000 psi (758.4 bar), 26,000 psi (1,792.6 bar) for scale ranges above 4,000 psi (275.8 bar)

Overpressure Protection

• Up to 150 times scale range

Max. Operating Temperature

• Ambient: -40 to 185° F (-40 to 85° C)
• Process: -40 to 250° F (-40 to 121° C)

Certifications/Approvals

• Hazardous location, see full specs for a complete list of certifications

Data Sheet

Thermostat KP DANFOSS

The KP Thermostats are single-pole, double-throw (SPDT) temperature-operated electric switches. They can be connected directly to a single-phase AC motor of up to approx. 2 kW or installed in the control circuit of DC motors and large AC motors. The KP Thermostats are used for regulation, but can also be seen in safety monitoring systems. They are available with vapour charge or with adsorption charge. With a vapor charge, the differential is very small. The KP Thermostats with adsorption charge are widely used to give frost protection.

Features

• Wide regulating range
• Can be used for deep freeze, refrigeration, and air conditioning plant
• Welded bellows elements mean increased reliability
• Small dimensions. Easy to install in refrigerated counters or cold rooms
• Ultra-short bounce times. This gives long operating life, reduces wear to a minimum and increases reliability
• Standard versions with a changeover switch. Possible to obtain opposite contact function or to connect a signal
• Electrical connection at the front of the unit. Facilitates rack mounting Saves space
• Suitable for alternating and direct current
• Cable entry of soft thermoplastic for cables from 6 to 14 mm diameter
• Extensive and wide range

Technical data

Ambient temperature

• -40 – 65 °C (80 °C for max. 2 hours)

Switch

• Single-pole, double-throw (SPDT) changeover switch

Contact load

Alternating current

• AC1 =16 A, 400 V
• AC3 = 16 A, 400 V

Direct current

• DC13: 12 W, 220 V control current

Wire dimensions

solid / stranded

• 0.75 – 2.5 mm2

flexible, without ferrules

• 0.7 – 2.5 mm2

flexible, with ferrules

• 0.5 – 1.5 mm2

Tightening torque

• max. 2 Nm

Rated impulse voltage

• 4 kV

Pollution degree

• 3

Short circuit protection, fuse

• 16 A

Insulation

• 400 V

Enclosure

• 30/44

Pressure switch KP DANFOSS

KP pressure switches are for use in refrigeration and air conditioning systems to give protection against excessively low suction pressure or excessively high discharge pressure. KP pressure switches are also used for starting and stopping refrigeration compressors and fans on air-cooled condensers. A KP pressure switch can be connected directly to a single-phase AC motor of up to approx. 2 kW or installed in the control circuit of DC motors and large AC motors.

KP pressure switches are fitted with a single-pole double-throw (SPDT) switch. The position of the switch is determined by the pressure switch setting and the pressure at the connector. KP pressure switches are available in IP30, IP44, and IP55 enclosures.

Features

• Ultra-short bounce time thanks to snap-action function (reduces wear to a minimum and increases reliability)
• Manual trip function (electrical contact function can be tested without the use of tools)
• Types KP 6, KP 7 and KP 17 with fail-safe double bellows element
• Vibration and shock-resistant
• Compact design
• Fully welded bellows element
• High reliability both electrically and mechanically

Technical data

Ambient temperature

• -40 – 65 °C (80 °C for max. 2 hours)

Ambient temperature (PED approved units)

• -25 – 65 °C (80 °C for max. 2 hours)

Media temperature

• -50 – 100 °C

Max. working pressure

• LP: PS / MWP = 17 bar
• HP: PS / MWP = 35 bar
• KP 6: PS / MWP = 46.5 bar

Max. test pressure

• LP: Pe = 20 bar
• HP: Pe = 35 bar
• KP 6: Pe = 46.5 bar

Contact load

Alternating current

• AC1 =16 A, 400 V
• AC3 = 16 A, 400 V
• AC15 = 10 A, 400 V

Direct current

• DC13 = 12 W, 220 V control current

Wire dimensions

solid / stranded

• 0.75 – 2.5 mm2

flexible, without ferrules

• 0.7 – 2.5 mm2

flexible, with ferrules

• 0.5 – 1.5 mm2

Tightening torque

• max. 2 Nm

Rated impulse voltage

• 4 kV

Pollution degree

• 3

Short circuit protection, fuse

• 16 A

Insulation

• 400 V

Enclosure

• IP30 / IP44 / IP55