Description
The Model DA is a controller designed for the monitoring of low differential pressures. It combines in one enclosure a low pressure transducer, a digital display, and up to two alarms (see Fig.1). A 4-20 mA output is also available as an option.The Model DA controller is typically used for the monitoring of clean room pressures, duct static and velocity pressures; as well as filter differential, draft, fume hood and other low pressure applications

低壓力差監視控制器 / Very low Pressure Process Panel Meter
Modus Model DO - GE General Eastern

Description
The Model DO pressure controller accurately monitors and controls very low pressures. It combines in one enclosure a low pressure transducer, a digital display and two alarms (see Fig. 1). This pressure controller has a three-state output: a high pressure alarm when the pressure exceeds a high limit, a low pressure alarm when the pressure falls below a low limit, and no output when the pressure is within these limits. It is typically used for the monitoring and control of pressure in closed areas such as rooms and buildings.

Description
The Model DT is a low differential pressure transmitter which combines in one enclosure a transmitter and a display (see Fig.1). A choice of linear or square root output is available for the measurement and display of pressure or velocity. It is typically used for the monitoring of clean-room pressures, duct static and velocity pressures; as well as filter differential, draft, fume hood and other low pressure applications.

Description
The Model DW pressure controller accurately monitors and controls very low pressures. It combines in one enclosure a low pressure transducer, a digital display and two alarms (see Fig. 1). This pressure controller has a three-state output: a high pressure alarm when the pressure exceeds a high limit, a low pressure alarm when the pressure falls below a low limit, and no output when the pressure is within these limits. It is typically used for the monitoring and control of pressure in closed areas such as rooms and buildings.

Description
The Modus room pressure monitor takes advantage of our time-proven sensor technology to monitor, alarm and/or control critical room to room differential pressures. The same instrument monitors either positive or negative room pressures.

Monitoring of hospital rooms such as operating rooms and isolation rooms for housing contagious patients is a typical application. Other applications requiring differential pressure monitoring are: fume hoods, clean rooms, computer rooms, asbestos abatement projects etc. This monitor is extremely sensitive and performs reliably at very low room pressures.

It is easily mounted on a wall and the installer has the choice of rear or bottom knockouts for electrical and pressure connections. All electrical and mechanical components are housed in a tough polycarbonate NEMA type 13 (IEC529, IP65) enclosure with a clear, gasketed polycarbonate cover for easy viewing of display and room status.

Pressure is displayed on the front panel with a resolution of 0.001" of water (or 0.1 Pascals). The unit measures positive or negative pressure. A minus sign indicates a negative room pressure. A small light, next to the digital display, indicates the selected units of measurement (inches of water or Pascals). A bright red and a bright green LED alert those approaching of the status of the room. The pressure at which the lights change state can be adjusted from the front panel.

The room pressure monitor comes standard with a SPDT relay (for supplemental controls such as audible alarm or remote status indication), and 3 analog output signals, 0 to 5 Vdc, 0 to 10 Vdc and 4 to 20 mA. These analog outputs are proportional to the room pressure. A selector switch allows field setup for either 120 Vac or 240 Vac 50/60Hz service. 24 Vac operation is optional.

Description
The Series M family of differential pressure transmitters measure low pressures and feature a wide variety of analog signal outputs with low power consumption. A wide selection of standard pressure ranges and electrical ratings is available. These transmitters feature: no moving parts to wear out, reliable long term stability, and are virtually position insensitive. The Series M transmitters are typically used for monitoring cleanroom pressures, HVAC, velocity pressures, bubbler level systems, and leak detection; as well as filter differential, draft, fume hood and other low pressure applications.

The transmitters are housed in a compact heavy duty gasketted cast aluminum enclosure designed to IP 65 of IEC 529 standards and NEMA 4. The die cast aluminum enclosure incorporates a recessed neoprene gasket to prevent ingress of moisture or dust. Wall mounting holes are enclosed in the cast aluminum box and concealed by the cover. The wall mounting holes and the cover attaching screws are outside the gasketted area. Access to the terminals are made through knockouts on the front of the box. A choice of one or two knockouts and three hole sizes is available to accommodate usage of 1/2 inch conduit and metric sizes PG11 and PG13. Pluggable terminal block connectors are provided with captive wire protection and captive terminal screws.

The Series M includes four models: Model M10, Model M20, Model M30 and Model M40. These four models incorporate a variety of power and signal options.

The span or zero adjustment is performed with a 20 turn potentiometer for fine resolution. The M Series transmitters have been tested by an accredited laboratory and comply with the European requirements of Council Directive 89/336/EEC for emission measurements per EN50081-1 and immunity tests per EN50082-1.

Description
The MultiRange Pressure Transmitter design incorporates a microprocessor and either a solid-state, silicon, piezoresistive sensor or a diaphragm based, capacitive cell. The MultiRange product combines these highly stable sensing technologies with its microprocessor technology for improved accuracy and reliability, with field-selectable flexibility for the end-user. The MultiRange Pressure Transmitter offers up to three, field-selectable, pressure ranges in a single unit, which eliminates the need to stock multiple pressure transmitters.

Two, industry standard, analog output versions are available: a 4-20 mA 2-wire loop powered unit, or a field selectable 0-5 VDC/0-10 VDC unit. On VDC output units, a 0-5 or 0-10 VDC analog output option may be chosen, with either unidirectional or bi-directional range preference. The choice of uni-directional or bi-directional is also available on units with a 4-20 mA output. These selections are accomplished with easy-to-use, push-on jumpers.

The PC board is mounted inside the cover of the unit, which makes for easy installation, trouble-shooting and/or replacement. The design incorporates a push-button Zero feature, which eliminates traditional “trim pots” that typically require many turns to arrive at a particular setting. A simple push of a button adjusts the Zero of this MultiRange Pressure Transmitter.

Features and Benefits

	Up to 3 pressure ranges in one housing
	Designed to meet NEMA 4 standards with optional gaskets
	Push-button Zero
	Ranges selected by push-on jumpers
	Temperature compensated
	CE - certified* (model specific)

Description
The Modus pressure switch is a highly sensitive differential pressure switch, capable of detecting pressure changes of .10 inches of water and greater. To measure pressure between .10 and 5.0 inches of water, a differential capacitance cell is used. In the capacitance cell, a very lightweight, responsive diaphragm deflects a small amount when pressure is applied. This deflection results in a change in capacitance, which is detected and processed electronically. Reliability and long life are inherent advantages of the solid-state design. Differential pressure changes greater than 5.0 inches of water are detected with a piezoresistive (silicon) sensor. The piezoresistive sensor is a solid state device designed in a Wheatstone bridge configuration. When pressure is applied to the device, the resistance of the bridge changes by a small amount. This resistive change is converted to a voltage and amplified.

A wide selection of standard pressure ranges and electrical ratings is available. The output of Series S10 pressure switch is an SPDT relay contact.

Features and Benefits

	Virtually position insensitive even at very low pressure (0.01")
	Fast response time due to low internal volume
	No moving parts to wear out
	Solid-state circuitry for long life
	Compact size
	Low power consumption

Applications

	Filter differential pressures
	Fan static pressures
	Clean room pressures
	Variable air volume systems
	Velocity pressures
	Medical and analytical instruments
	Liquid level monitoring
	General automation

Description
The Series T family of differential pressure transmitters measure low pressures and feature low power consumption and a variety of analog signal outputs. A wide selection of standard pressure ranges and electrical ratings is available. These transmitters feature: no moving parts to wear out, reliable long term stability, and are virtually position insensitive.

The Series T transmitters are an excellent choice for many HVAC, process and automation monitoring requirements. These transmitters monitor: filter differential pressures, fan static pressures, clean room pressures, variable air volume systems and velocity pressures. They have been used for bubbler level systems, leak detection and in medical and analytical instruments.

The transmitters are housed in a flame retardant, glass-reinforced polyphenylene oxide (NORYL(tm)) case. Electrical connections are made by means of a 3/8" terminal strip with #6 screws.

The Series T includes four models: Model T10, Model T20, Model T30 and Model T40. These four models incorporate a variety of power and signal options.

The span or zero adjustment is performed with a 20-turn potentiometer for fine resolution.

可程式控制壓力指示訊號傳輸及警報器 /  Pressure Indicator, Transmitter with Alarms
Modus Series Titan - GE General Eastern

Description
The Titan Series of panel meters incorporates the use of a microprocessor and a solid-state, silicone piezoresistive sensor. The microprocessor allows for no trim pots, all digital calibration and overall product flexibility. The Titan Series combines an indicator, a switch, and a transmitter, with a large, vibrant 3½ digit LCD display, all in a compact, 1/8 DIN enclosure. On the MPM2, set point settings are easily made by the on-board, push-button adjustments. The Titan Series of pressure panel meters features a pushbutton “zero” adjustment, making mounting orientation flexible and easy — and (on the MPM2) the two on-board LEDs allow for bright visual indication of when a Hi and/or Lo point has been achieved. 

The Titan Series of pressure panel meters may be ordered with dual relays for output switching. Typical applications would include those where a Hi and/or a Lo alarm point are important. The Titan Series is available with a 2 or 7 amp failsafe configured relay. Models with relays also feature an easy-to-use, programmable deadband, which can be set for up to 25% of the range of the unit, in .001” increments.

Relative accuracy is 0.5% of full range. The unit is fully compatible with air and other inert gases. Ranges are available up to 20" WCD and 5 kPaD. An optional gasket is available in order to make the faceplate meet NEMA 4 requirements. 

Features and Benefits

	Easy-to-read 3½ digit LCD display
	Membrane style keypad for fast wipe down
	4-20 mA or 0-5 VDC Analog output available
	Programmable Hi and Lo relay set points
	CE - approved

Description
The Series W pressure transmitters are designed to measure low differential pressures of liquids or gases. A wide selection of standard pressure ranges and electrical ratings is available.

These transmitters feature: no moving parts to wear out, proven long term stability of piezoresistive devices, only 316 stainless steel in contact with the fluid, and all welded construction.

Series W transmitters are an excellent choice for many HVAC, process and automation monitoring requirements. Typical applications include measurement of differential pressure across flow elements, heat exchangers, pumps, filters, liquid level monitoring and other demanding differential pressure measurement and control applications.

The transmitters are housed in a compact heavy duty gasketted cast aluminum enclosure designed to IP 65 of IEC 529 standards and NEMA 4. The die cast aluminum enclosure incorporates a recessed neoprene gasket to prevent ingress of moisture or dust. Wall mounting holes are enclosed in the cast aluminum box and concealed by the cover. The wall mounting holes and the cover attaching screws are outside the gasketted area. Access to the electrical terminals are made through knockouts on the front of the box. A choice of one or two knockouts and three hole sizes is available to accommodate usage of 1/2" conduit or metric sizes PG11 and PG13. Pluggable terminal block connectors are provided with wire protection and captive terminal screws.

The Series W includes four models: Model W10, Model W20, Model W30 and Model W40. These four models incorporate a variety of power and signal options.

The span or zero adjustment is performed with a 20-turn potentiometer for fine resolution. A 50% adjustment in output is possible.

The Series W transmitters have been tested by an accredited laboratory and comply with the European requirements of Council Directive 89/336/EEC for emission measurements per EN50081-1 and immunity tests per EN50082-1.

Description

Differential Pressure Transmitter Accessories include:

	AST-1 Static Pressure Probe
	AN-1A Annunciator
	120V power Supply
	Surge Dampener
	Static Pressure Fittings
	Pitot Tubes