Pressure Transmitters

Product Details:

Features:

• Developed for OEM applications
• Compact stainless steel construction with ceramic sensor
• Available ranges include Vac up to 8,700 psi (600 bar)
• Wide range of mechanical and electrical connections
• Zero and span adjustment option available
• ±0.5% accuracy (±1% for pressures ≤ 45 psi)

Response Time <10 ms

• IP65 and IP67 enclosure ratings
• CE approved
• 1 year warranty

Features:

• High pressure peaks
• Corrosion resistance
• Less maintenance

Applications:
Suitable for a variety of applications including pump and compressor monitoring, refrigeration and HVAC

EMC EMI: EN50081-1/-2EMS: EN50082-2

Product Details:

OEM Differential Pressure Transmitter 982R
General description:
The differential pressure transmitters of the 982R series areused to measure differential pressure, overpressure andvacuum. They provide one adjustable pressure range andone output signal.

Applications:
Monitoring of gaseous, non-combustible and non-aggressive media.

Possible usage areas are:

• Building automation, air conditioning systems and cleanroom monitoring
• Valve and flap control
• Filter, ventilator and blower monitoring· Control of air flows

Adjustable pressure range:
The end of the pressure range can be reduced to 50% of itsfactory set full scale value simply by the use of a push-button.


Easy offset calibration:
The output signal can be calibrated to zero by pressing thepush-button (pressure transmitter must be depressurised).

Configurable response time:
The response time of the output signal can be configured usinga jumper. If the jumper is in place the response time is slow(factory setting), which is useful for suppressing brief pressurepeaks. If the application requires a fast response time thejumper must be removed.

Reset:
The transmitter can be reset to its factory setting, just bypressing the push-button for >10 sec.

Mounting position:
Can be mounted in any position. The zero offset calibration eliminates any possible position error.

Product Details:

Differential pressure transmitter with Modbus communication and Input terminal

The DPT-IO-MOD differential pressure transmitter for air conforms to Modbus over serial line protocol, using RTU transmission mode and RS485 interface. The digital output signal is sent over Modbus enabling the DPT-IO-MOD to connect directly to a field communications network. DPT-IO-MOD requires less wiring than traditional 3-wire transmitters, since multiple devices can be connected on serial line. The DPT-IO-MOD includes an Input terminal that enables reading of multiple other signals such as temperature or control relays over Modbus. The Input terminal has two input channels designed to accept 0−10 V, ntc10k, Pt1000, Ni1000/(-LG), and BIN IN (potential free contact) signals. For example, DPT-IO-MOD can read values from one differential pressure measurement point and two temperature measurement points. Hence, the DPT-IO-MOD does the work of three transmitters.

The DPT-IO-MOD differential pressure transmitter for air conforms to Modbus over serial line protocol, using RTU transmission mode and RS485 interface. The digital output signal is sent over Modbus enabling the DPT-IO-MOD to connect directly to a field communications network. DPT-IO-MOD requires less wiring than traditional 3-wire transmitters, since multiple devices can be connected on serial line. The DPT-IO-MOD includes an Input terminal that enables reading of multiple other signals such as temperature or control relays over Modbus. The Input terminal has two input channels designed to accept 0−10 V, ntc10k, Pt1000, Ni1000/(-LG), and BIN IN (potential free contact) signals. For example, DPT-IO-MOD can read values from one differential pressure measurement point and two temperature measurement points. Hence, the DPT-IO-MOD does the work of three transmitters.

DPT-IO-MOD series devices are commonly used in HVAC/R systems for:

• Fan, blower and filter monitoring
• Pressure and flow monitoring
• Valve and damper control
• Pressure monitoring in cleanrooms

Product Details:

DPT-2W Series

Multi-range differential pressure transmitters with 4–20 mA 2-wire configuration DPT-2W series

Differential pressure transmitters are engineered for building automation in the HVAC/R industry. The most technologically advanced transmitters on the market, measuring static and differential pressure, with field selectable range.

DPT-2W series devices include:

• 8 field selectable measurement ranges, unidirectional or bidirectional, selectable via jumper (see Model Summary)
• Pressure measurement in Pa
• 4–20 mA 2-wire current loop configuration
• Display (DPT-2W series device options)

DPT-2W series devices are commonly used in HVAC/R systems for:

• Fan, blower and filter monitoring
• Pressure and flow monitoring
• Valve and damper control
• Pressure monitoring in cleanrooms

Product Details:

Products Details:
Type 694 pressure transmitters are available with or without integral digital display. 0⁄10 V / 4⁄20 mA outputs are available as well as square. Individually ranged sensors ensure optimum accuracy and longterm stability of measurement, and the variety of options means great flexibility, not only in climate control, but also in industrial and medical fine pressure measurement

 

Pressure Range

• Relative and differential -0.5 - 0.5 mbar / 0 - 150 mbar

Operating Conditions

• Medium Air and neutral gases

Materials in Contact with Medium

• Sensor Ceramic Al2O3 (96%)
• Diaphragm Silicone
• Housing Polycarbonat PC

Electrical Overview

• 2 wire 4 - 20 mA
• Power supply 11.0 - 33 VDC
• Polarity reversal protection
• Short circuit proof and protected against polarity reversal.
• Each connection is protected against crossover up to max. supply voltage.

Dynamic Response:

• Response time < 20 ms
• Load cycle < 10 Hz

Product Details:

Field adjustable, multi-range differential pressure transmitters for air
DPT-R8 series differential pressure transmitters are engineered for building automation in the HVAC/R industry. The most technologically advanced transmitters on the market measuring static and differential pressure, with field selectable units, range and output, all in a single device.

DPT-R8 series devices include: (Ex. ±25, ±50, ±100, ±150 Pa, 25, 50, 100, 250 Pa)

• Multiple measurement units, field selectable via jumper, including: inWC, mmWC, Pa, mbar.
• 8 field selectable measurement ranges, unidirectional or bi-directional, selectable via jumper.
• Proportional output options including: voltage (0–10 V) and current (4–20 mA).

DPT-R8 series device options offer:

• AZ (autozero) function for automatic zero point calibration, eliminating the need for periodic manual autozeroing to ensure long term accuracy
• Backlit display
• Field adjustable span point calibration (i.e. gain)

Product Details:

Features:

• Pressure transmitter for the measuring of relative and absolute pressures of gases, vapors and liquids in applications for food and pharmaceutical industry
• Stainless steel case in hygienic design, degree of protection IP 65/67
• Comprehensive parameterising functions
• Comprehensive simulation and diagnostic functions
• Quick access to device data
• Development according to SIL2
• Measuring rate up to 100 Hz
• Output signal 4…20 mA with HART® protocol
• Configuration memory
• Digital communication via PDM, FDT/DTM, 375/475 Field Communicator
• Output functions: linear, invers, square root, table function with up to 64 support points
• Wetted parts stainless steel
• Case design process connection bottom
• Case design process connection back
• Various hygienic process connections
• Approved according to NAMUR 95
• EAC declaration (upon request)

Options:

• Explosion protection for gases and dust
• Classification per SIL2
• Certificate of measuring equipment for Russian Federation
• Material certificate per EN 10204
• Calibration certificate per EN 10204
• Active temperature compensation (ATC technology)
• Removable display and control unit
• Degree of protection IP 69K
• Front cover of stainless steel with window of non splin-tering glass
• Wetted parts electropolished

Product Details:

Absolute pressure transmitter for measurement of atmospheric pressure

Special features:

• High level of accuracy and long-term stability
• Little zero point drift or hysteresis; largely independent of temperature
• Can be adjusted (reduction) to the altitude of the place of installation
• Available for a variety of measuring ranges, output signals and supply voltages
• Available with display (optional)
• Can be calibrated

The BA 1000 absolute pressure transmitter is designed to display barometric pressure. At the heart of the unit is an evacuated measurement cell made from an elastic copper material.The deflection of the measurement cell due to atmospheric pressure is measured inductively without making contact. The transducer emits an electrical output signal proportional to the pressure. The device can be powered using a 24 VDC power supply or a variety of AC voltages. The instrument is available with an ISO factory calibration or DAkkS calibration certificate (optional).

Measuring ranges:

• 80 .. 120 kPa
• 85 .. 115 kPa
• 90 .. 110 kPa
• 95 .. 115 kPa

Power supply:

• 24 VDC, +20 % / -15 %
• 24 VAC, +6 % / -15 % (50/60 Hz)
• 115 VAC, +6 % / -15 % (50/60 Hz)
• 230 VAC, +6 % / -15 % (50/60 Hz)

Margin of error:

• +- 1 % of measurement range
• Reference +- 0.5 hPa with respect to sea level

Output:

• 0 .. 10 V (R_L 2 k)
• 0 .. 20 mA (R_L 500 )
• 4 .. 20 mA (R_L 500 k)

Product Details:

The DPTL is made for differential pressure detection in liquids for air-conditioning, heating and water systems. The equipment can withstand mildly corrosive substances and liquids.

Applications:

PTL and DPTL series pressure transmitters are suitable for measuring pressure in neutral fluids and non-aggressive gases. Also compatible with refrigerants. They are suitable for all kind of tasks in air-conditioning, heating and water systems.

Product Details:

Multifunctional PID controller with differential pressure or air flow transmitter for building automation systems 

The DPT-Ctrl series PID controllers are engineered for building automation in the HVAC/R industry. With the built-in controller of the DPT-Ctrl it is possible to control the constant pressure or flow of fans, VAV systems or dampers. When controlling air flow, it is possible to select a fan manufacturer or a common measuring probe that has a K-value.

DPT-Ctrl series devices include:

• PID-controller
• Control differential pressure or air flow in duct or across centrifugal fans
• All parameters (PID) are adjustable via menu
• Differential pressure or air flow transmitter (selectable via menu)
• Measure and monitor differential pressure or air flow in duct or across centrifugal fans

Multiple field selectable measurement units:

• Volume flow: m3/s, m3/h, cfm, l/s
• Velocity: m/s, ft/min
• Pressure: Pa, inWC, mmWC, kPa, mbar, psi

Unique proportional output options:

• Control output: Voltage (0–10 V) or current (4–20 mA)
• Differential pressure or air flow: Voltage (0–10 V) or current (4–20 mA)

DPT-Ctrl series devices are commonly used in HVAC/R systems for:

• Controlling differential pressure or air flow in air handling systems
• VAV applications
• Controlling parking garage exhaust fans 

Specification:

Product Details:

General description:
The differential pressure transmitters of the 984 series are usedto measure differential pressure, overpressure and vacuum.They provide up to 8 pressure ranges and 2 output signals,which are easily selectable by jumper or rotary selector switch.

Applications:
Monitoring of gaseous, non-combustible and non-aggressive media.

Possible usage areas are:
Building automation and air conditioning systems· Overpressure measurement in clean rooms and laboratories· Measurement of constant pressure in VAV applications· Dynamic filter and ventilator monitoring

Configurable pressure range:
For an optimum adaptation to the application, the transmittercan be switched between various pressure ranges. The factorysetting is the most sensitive range. For the series 984M and984A the less sensitive second range will be selected by simplyremoving a jumper. For the series 984Q the available eightranges can be selected by a rotary selector switch.

Configurable response time:
The response time of the output signal can be configured usinga jumper. If the jumper is in place the response time is slow(factory setting), which is useful for suppressing brief pressurepeaks. If the application requires a fast response time thejumper must be removed.

Easy offset calibration:
The output signal of the 984M series can be calibrated to zeroby pressing the M push-bottun in a pressureless state of thetransmitter. The series 984A and 984Q perform an automatedzero offset compensation.

Volume flow measurement (optional):
The shape of the output signal can be switched from linear tosquare root using a jumper in order to measure the volume flowvia a differential pressure.

Switching output (optional, not available with 2-wire version):
To give a switch signal at an user defined pressure level thetransmitter has an adjustable transistor switching output(npn NO) with a maximum switching capacity of 30 Vdc/100 mA.

Display (optional, not available with 2-wire version):
In addition to the analogue output signal the pressure value canbe read out on a red LED-display in Pascal or other pressure units.

Mounting position:
Can be mounted in any position. The zero offset calibration eliminates any possible position error. 

Product Details:

The differential pressure transmitter for air with IP65
The differential pressure transmitters of the 985 series are used to measure differential pressure, overpressure and vacuum.They provide up to 8 pressure ranges and 2 output signals,which are easily selectable by jumper or rotary selector switch.

Configurable pressure range For an optimum adaptation to the application, the transmitter can be switched between various pressure ranges. The factory setting is the most sensitive range. For the series 985M and 985A the less sensitive second range will be selected by simply removing a jumper. For the series 985Q the available eight ranges can be selected by a rotary selector switch.

Output signal selection: The output signal of the 3-wire version can be changed between 0 ...10 Volt and 4 ... 20 mA by removing a jumper. The series 985M is also available in a 2-wire version with 4 ... 20 mA output signal.

Applications:
Monitoring of gaseous, non-combustible and non-aggressive media.

Possible usage areas are:

• Building automation and air conditioning systems

• Overpressure measurement in clean rooms and laboratories
• Measurement of constant pressure in VAV applications

• Dynamic filter and ventilator monitoring 

Product Details:

These differential pressure transmitters are available in a wide range of precision classes and therefore suitable for applications in the heating, air-conditioning and ventilation industries as well as sophisticated laboratory applications. An optional display allows measurement values to be read directly on-site in Pa, kPa or mmH2O. An optional time constant (up to 5s) allows the instrument to generate an attenuated output signal, even under fluctuating pressure conditions. The instrument is available with an ISO factory calibration or DAkkS calibration certificate (optional).

Features:

• High level of accuracy
• Little zero point drift or hysteresis; largely independent of temperature
• LCD display (optional)
• Output signal 0 .. 10 V (PU), 0/4 .. 20 mA (PI)
• Factory-adjusted attenuation of the output signal of up to 5 s possible (optional)
• Can be calibrated

Product Details:

Differential Pressure Transmitter-Din rail mounting P34

The P 34 differential pressure transmitter is designed for pressure monitoring applications in cleanrooms, laboratories, pharmaceutical plants and operating theatres as well as for special uses in machine and plant construction. As well as measuring the differential pressure, the instrument also records positive and negative overpressures as well as flow rates or volumetric flows. The measuring range is scalable in the range from 10 .. 100 %. Two optional contact points allow the user to connect visual or audible alarms that are triggered any time values rise above or fall below specified limits. The transmitter can be configured easily via an USB interface (optional) with software. A selectable time constant allows the transmitter to be adjusted perfectly to the pressure conditions and thus ensures a stable output signal. The P 34 can be mounted on top-hat rails.

Features:

• Measurement of differential pressure, volume flow or P-/T-compensated volume flow (optional) possible
• Volume flow can be configured via k-factor, dPmax/Vmax or 20 individual values
• Scaling, characteristic line form and many other parameters can be set via PC-software (optional)With USB interface 2 floating switching relays (optional)
• Output signal can be configured 0 .. 10 V or 0/4 .. 20 mA
• Calibration of the zero point Can be calibrated
• Suitable for top-hat rail mounting in control cabinets
• Delivery possible already completely integrated into the control cabinet (on request)

Technical Data:
Measurement ranges:

10 / 50 / 100 / 250 / 500 Pa1 / 2,5 / 5 / 10 / 20 / 50 / 100 kPafreely scalable from 10 .. 100 % within a measurement range (others available on request)Optionally also for the measurement of P-/T-compensated volume flow

Margin of error:
± 0,2 % or ± 0,5 % of the scaled range (40 .. 100 % of max. value, min. 0.3 Pa)

Output (rad. / lin.):
0 .. 10 V (RL ≥ 2 kΩ)0 .. 20 mA (RL≤ 500 Ω)4 .. 20 mA (RL≤ 500 Ω)(output signals can be configured freely)

Product Details:

Differential pressure transmitter with two pressure sensors for air and an Input terminal for two analog inputs for external signal conversion into Modbus.

DPT-Dual-MOD combines two differential pressure transmitters into one device. It offers a possibility to measure pressure from two different points. It has a Modbus interface and an Input terminal. When using the Input terminal, temperature transmitters can be replaced with temperature sensors. As a result you will save in costs of the devices and in the installation costs. The AHU model that includes an air flow transmitter has been designed especially for ventilation units.

DPT-Dual-MOD series devices are commonly used in HVAC/R systems for:

• Fan, blower and filter monitoring
• Poressure and flow monitoring
• Valve and damper control
• pressure monitoring in cleanrooms

DPT-Dual-MOD-AHU can also be used for:

• Air flow monitoring across centrifugal fans and blowers
• In-duct air flow monitoring
• VAV applications 

Product Details:

Features:

• Differential pressure transmitter for diaphragm seal operation
• High-resolution display with intuitive 4-button operation and backlight
• Comprehensive parameterising functions
• Comprehensive simulation and diagnostic functions
• Quick access to device data
• Development according to SIL2
• Output signal 4…20 mA with HART® protocol
• Configuration memory
• Digital communication via PDM, FDT/DTM, 375/475 Field Communicator
• Output functions: linear, invers, square root, table function with up to 64 support points
• Wetted parts stainless steel
• Various process connections with diaphragm seal technology
• Approved according to NAMUR 95
• EAC declaration (upon request)

Options :

• Explosion protection for gases and dust
• Classification per SIL2
• Certificate of measuring equipment for Russian Federation
• Material certificate per EN 10204
• Calibration certificate per EN 10204
• Removable display and control unit
• Degree of protection IP 69K
• Front cover of stainless steel with window of non splintering glass

Product Details:

Portable digital pressure gauge for measuring differential pressures and flow rates.

Special features:

High level of accuracy and long-term stability Little zero point drift or hysteresis; largely independent of temperature Available for 4 measuring ranges Scalable analog output Zero-point calibration at the touch of a button eliminates the dependence of the display on its location Stores min. and max. values Flow-rate display Can be calibrated

The EMA 200 is a portable, battery-powered digital pressure gauge for precise measurement of positive and negative differential pressures. Because it is easy-to-use, the EMA 200 lends itself well to maintenance work and customer service applications for heating, air-conditioning and ventilation units, where it can be used for monitoring filters and measuring fireplace drafts as well as measuring flow rates and determining volumetric flows. The instrument is available with an ISO factory calibration or DAkkS calibration certificate.

The EMA 200 can be ordered in 4 different measurement ranges. The units can be changed as required: Pa and kPa are shown in the display; mbar, mmH2O, and in H2O are printed on the housing film and marked with an arrow. The temperature or rate of flow is shown in a second line on the display.

The EMA 84 can also be ordered with 4 different measurement ranges. The following units may be selected: Pa/mbar and mbar/kPa.

Technical Benefits:

• You can measure Low differential Pressure across Bag filters, Duct line, Low air pressure line.
• You can measure positive and negative pressure both in single instrument.
• You can measure velocity through Telescopic Pitot Tube (Minimum Working length 300 mm to Maximum Working length 980 mm) so one instrument all velocity measurement application.
• With Calibration Certificate as German ISO 9001 Norms
• Higher Accuracy level (0.5% FS)
• Made in German Engineering
• Adjustable pitot factor and density
• Zero-point correction at the push of a button
• Min. / max. value memory
• Temperature measurement
• 2 year Warranty

Product Details:

Compact differential pressure transmitter PS27
This compact differential pressure transmitter is particularly suited to filter and pressure monitoring applications in the heating, air-conditioning and ventilation industries. An optional display allows measurement values to be read directly on-site in Pa or kPa. An optional time constant (up to 4s) allows the instrument to generate an attenuated output signal, even under fluctuating pressure conditions. To reduce wiring costs, the instrument is also available in a version with two-wire technology (optional). The PS 27 can be mounted either on a wall or on top-hat rails. The instrument is available with an ISO factory calibration or DAkkS calibration certificate (optional).

Features:

• For high-end cleanroom applications (PUC 44 - 3)
• Suitable for top-hat rail mountingand wall surface installation
• Selectable output signal 0/2 .. 10 V, 0/4 .. 20 mA or 0 .. 5 V
• Selectable attenuation of the output signal of up to 4 s (optional)
• Display (optional)
• Can be calibrated
• Zero-point calibration via an external signal reduces maintenance costs
• The adjustable limit switch permits the connection of, e.g. ventilators or signalling devices, and saves additional wiring (optional)

Output:

• 0 .. 10 V (R L ≥ 50 kΩ)

• 2 .. 10 V (R L ≥ 50 kΩ)
• 0 .. 20 mA (R L ≤ 500 Ω)
• 4 .. 20 mA (R L ≤ 500 Ω)
• 0 .. 5 V (R L ≥ 50 kΩ) (the output signal can be configured using jumpers)

Power supply:

• 24 VAC/DC, ± 10 % (without galvanic separation) and 15 .. 32 VDC (two-wire) (only for 4 .. 20 mA Output)

Contact point (optional, not for two-wire):

• 1 relay (changeover contacts) max. 230 V AC, 6 A (min. required switching capacity 300 mW) 

Optional:

• Toggles between: 100 Pa / 250 Pa / 500 Pa / 1000 Pa
• Toggles between: 250 Pa / 500 Pa / 1000 Pa / 2500 Pa
• Toggles between: 1 kPa / 2.5 kPa / 5 kPa / 10 kPa
• Toggles between: 10 kPa / 25 kPa / 50 kPa / 100 kPa

Product Details:

High precision differential pressure transmitter P26

Differential pressure transmitter with scalable measuring range and a high level of overpressure protection

The P 26 differential pressure transmitter is designed for pressure monitoring applications in cleanrooms, laboratories, pharmaceutical plants and operating theatres as well as for special uses in machine and plant construction. As well as measuring the differential pressure, the instrument also records positive and negative overpressures as well as flow rates or volumetric flows.

The measuring range is scalable in the range from 10 .. 100 %. Two optional contact points allow the user to connect visual or audible alarms that are triggered any time values rise above or fall below specified limits. The transmitter can be configured easily via an USB interface (optional) with software. This can also be performed using a keyboard and display (optional). The measured values can be displayed in all standard units. A selectable time constant allows the transmitter to be adjusted perfectly to the pressure conditions and thus ensures a stable output signal. The P 26 can be mounted either on a wall or on top-hat rails

Special features:

• High level of accuracy and long-term stability through automatic zero-point calibration
• Measurement of differential pressure or volumetric flow / flow rate possible
• Easy configuration of the measuring range, analog output, time constants and units via PC or keyboard (optional)
• USB interface (optional)
• Display with keyboard for configuration of the pressure transmitter (optional)
• Multilingual menu (English/German/Italian/French)
• Suitable for top-hat rail mounting and wall surface installation
• 2 floating switching relays (optional)
• Integrated power adapter for 115/230 VAC power supply
• Silicon-free materials for parts in contact with medium
• Output signal can be configured 0 .. 10 V, 0/4 .. 20 mA or ± 5 V
• Selectable attenuation of the output signal from 0 .. 60 s
• Can be calibrated
• Highly stable measurements thanks to cyclical self-calibration of the zero point
• High level of overpressure protection even in the smallest measuring ranges

Measurement ranges:

• 10 / 50 / 100 / 250 / 500 Pa
• 1 / 2.5 / 5 / 10 / 20 / 50 / 100 kPa
• freely scalable from 10 .. 100 % within a measurement range
• (others available on request)

Margin of error:

• ± 0,2 % or ± 0,5 % of the scaled range (40 .. 100 % of max. value, min. 0.3 Pa)

Output (linear / root-extracted):

• 0 .. 10 V (R_L ≥ 2 kΩ)
• 0 .. 20 mA (R_L≤ 500 Ω)
• 4 .. 20 mA (R_L≤ 500 Ω)
• ± 5 V (R_L ≥ 2 kΩ)
• (output signals can be configured freely)

Power supply:

• 24 VAC/DC, ± 10 %
• 24 VAC, +6 % (with galvanic seperation)
• 230/115 VAC, -15 %

Interface (optional):

• USB, data cable supplied
• External zero-point calibration

Product Details:

Differential pressure transmitter with two pressure sensors for air and an Input terminal for two analog inputs for external signal conversion into Modbus

DPT-Dual-MOD combines two differential pressure transmitters into one device. It offers a possibility to measure pressure from two different points. It has a Modbus interface and an Input terminal. When using the Input terminal, temperature transmitters can be replaced with temperature sensors. As a result you will save in costs of the devices and in the installation costs. The AHU model that includes an air flow transmitter has been designed especially for ventilation units.

DPT-Dual-MOD series devices are commonly used in HVAC/R systems for:

• Fan, blower and filter monitoring
• Pressure and flow monitoring
• Valve and damper control
• Pressure monitoring in cleanrooms

DPT-Dual-MOD-AHU can also be used for:

• Air flow monitoring across centrifugal fans and blowers
• In-duct air flow monitoring
• VAV applications

Technical details:

Product Details:

DPT-MOD is a multifunctional transmitter for measuring volume flow, velocity, and static and differential pressure. The measurements can be read and the configuration done via Modbus communication. DPT-MOD requires less wiring than the traditional 3-wire transmitters because multiple devices can be connected on serial line.

The DPT-MOD is used for measuring air flow or low pressures of air and non-combustible gases in order to monitor and control building automation, HVAC and cleanroom systems. It can also be used with several different measurement probes such as FloXact™ or pitot tube, and air dampers.

DPT-MOD series devices are commonly used in HVAC/R systems for:

• Fan, blower and filter monitoring
• Pressure and flow monitoring
• Valve and damper control
• Pressure monitoring in cleanrooms
• Air flow monitoring across centrifugal fans and blowers
• In-duct air flow or pressure monitoring
• Measuring air flow or pressure in VAV applications

DPT-MOD series devices include:Two selectable functions:
Measure and monitor in-duct volume flow, velocity or differential pressure Measure and monitor air flow across centrifugal fans

Multiple selectable measurement units:

• Volume flow: m3/s, m3/h, cfm, l/s
• Velocity: m/s, ft/min
• Pressure: Pa, inWC, mmWC, kPa, mbar
• Modbus communication protocol

DPT-MOD series device options offer:
AZ (autozero) function for automatic zero point calibration, eliminating the need for periodic manual autozeroing to ensure long term accuracy.

Product Details:

Electronic differential pressure switch and transmitter
The DPI series electronic pressure measuring devices are engineered for building automation in the HVAC/R industry. The most technologically advanced and versatile electronic differential pressure switches on the market, combining up to two relay outputs and 0–10 V output options.

The DPI includes the following field selectable features:

• Configurable switching point: Open on rise or fall in pressure
• Hysteresis of setpoint
• Measurement units (Pa, kPa, mmWC, inWC, mbar)
• Measurement range (4 ranges per model)
• Output signal (0−10 V, NO/NC)
• Span and zero point calibration

DPI options include:

• Up to 2 relays, which can be configured separately
• Autozero calibration

DPI series devices are commonly used in HVAC/R systems for:

• Fan, blower and filter monitoring
• Staircase pressure monitoring and alarm
• Pressure monitoring in cleanrooms
• Boiler pressure monitoring and alarm

Technical details:

Product Details:

Application:
Analogue pressure transmitter monitoring overpressure, vacuum or differential pressure of liquid and gaseous– also aggressive – media.

Temperature range:
Ambient temperature from –20°C bis +85°C. Temperature of media up to 85° C depending onmaterial of pressure connection and diaphragm.

Diaphragm material:
Depending on media: NBR, Silicone, FKM (Viton®), EPDM. Others upon request.

Pressure range:

• 0 … 100 mbar. Others upon request.

• Maximum operating pressure 500 mbar