QVT-MF: MULTIVARIABLE SMART TRANSMITTER
ACCESSORIES
ACCESSORIES
MANIFOLDS
For the QVT-MF Multivariable Smart Transmitter, we offer a line of both 3-Valve and 5-Valve Manifolds that mount directly under the QVT Differential Pressure Transmitter.
LINE MOUNTED PURGE
The Line Mounted Purge or LMP is a low-volume continuous purge that can be used to purge either the pitots or the transmitter itself. When used to purge the transmitter, the LMP will deliver a continuous volume of air through the impulse lines, to ensure that no dust, particulate, or moisture can travel through the impulse lines and enter the transmitter.
QVT-MF: MULTIVARIABLE SMART TRANSMITTER
TECHNICAL DOCUMENTATION
MANUALS
Below, you can find the manuals for the QVT family of flow transmitters. For any questions or technical issues that you may have, please
contact us for assistance.
APPROVALS AND CERTIFICATES
QVT-MF: MULTIVARIABLE SMART TRANSMITTER
What is the QVT-MF?
The QVT-MF Multivariable Smart Transmitter will measure the Temperature, Absolute Pressure and the Differential Pressure (Velocity Pressure) within nearly any low pressure ductwork and will deliver a fully compensated 4-20 mA mass flow signal. Whether the QVT-MF is connected to Eastern Instruments brand
flow elements or to another manufacturer's brand of flow elements, the QVT will deliver an accurate and dependable flow measurement. While the QVT-MF Multivariable Smart Transmitter is perfect for any application under 9 in WC, it is especially accurate for draft range applications where the Differential Pressure can be under 1 in WC.
- MODES OF OPERATION: Multivariable Transmitter (measurement of two or more variables including DP, Temperature and Absolute Pressure)
- DP MEASUREMENT: Measurement of Differential Pressure across any primary flow element such as VAP Averaging Pitots or HBP Flow Conditioners
- AP MEASUREMENT: Measurement of Absolute Pressure (integral AP sensor is tied to the low port of the primary flow element)
- PROCESS SEAL: Our unique method of isolating sensors from the process requires no diaphragm seal and can be further enhanced by using a Purge Seal (Low Volume Continuous Purge coupled directly to transmitter)
- FLOW ACCURACY: Accuracy of flow measurement as high as +/-0.50% of reading over a 100:1 range in DP and a 10:1 range in flow
- RANGEABILITY: Can be ranged from 0 to 0.1 in WC up to 0 to 8 in WC
- RESPONSE TIME: Updates flow calculation 10 times a second
- FUNCTIONALITY: All measured and calculated variables are available on LCD panel
- OUTPUT: 4-20 mA compensated flow output using measured/input values for Differential Pressure, Absolute Pressure and Temperature (Can also be a single variable output)
- SIMPLICITY: Ae and the 4-20 mA full scale value are set from the LCD/push button interface
- ZERO: Differential Pressure can be zeroed from the LCD/push button interface
- POWER SUPPLY: Loop Power 8.8 to 42.5 vDC range
- VERSATILITY: LCD can be rotated independently of the head (LCD rotates 270o and the head can rotate 180o for ultimate adjustability)
QVT-MF: MULTIVARIABLE SMART TRANSMITTER
APPLICATIONS
QVT APPLICATIONS
The QVT Multivariable DP transmitter can be used in a wide range of applications and in conjunction with a wide array of DP based flow elements. Whether coupled with an Eastern Instruments
Insertion pitot or
High Beta Flow Conditioner, or with an existing flow element, the QVT DP flow transmitter will accurately output the flow of air traveling through your duct work. Below are just a few applications.
PERFECT FOR NEW INSTALLATIONS
The QVT is perfect for new installations as it can be mounted directly on an Eastern Instruments manufactured flow element such as the High Beta, pictured here. Installation is extremely simple as installation of the flow element and the transmitter is completed at one time. The QVT is extremely versatile and can be used as either a Multivariable DP Transmitter where two or more process variables are measured simultaneously, or as a DP only Transmitter where only a single process variable is being measured (typically the single variable is Differential Pressure).
- COMMON APPLICATIONS
- Combustion Air
- Pneumatic Conveyance Systems
- Industrial Drying Processes
- Process Exhaust Systems
- Scrubbers
- Industrial Oven Vent Lines
PERFECT FOR RETROFIT INSTALLATIONS
The QVT is perfect for retrofit installations as well. The optional mounting bracket for the QVT DP Multivariable Transmitter allows it to be pipe mounted in either the horizontal or vertical plane. Due to the QVT's unique design, it can be used with any flow element, regardless of the manufacturer, making the QVT perfect for retrofit applications where a transmitter is needed for an existing element. The QVT is extremely versatile and can be used as either a Multivariable DP Transmitter where two or more process variables are measured simultaneously, or as a DP only Transmitter where only a single process variable is being measured (typically the single variable is Differential Pressure).
- COMMON APPLICATIONS
- Combustion Air
- Pneumatic Conveyance Systems
- Industrial Drying Processes
- Process Exhaust Systems
- Scrubbers
- Industrial Oven Vent Lines
QVT-MF MULTIVARIABLE SMART TRANSMITTER
SPECIFICATIONS
SPECIFICATIONS
We apologize, but the Specification Tables on this page of our website are unavailable for mobile viewing.
DIFFERENTIAL PRESSURE SENSOR ACCURACY |
OPERATING
TEMPERATURE | HIGH ACCURACY | EXTREME ACCURACY |
| 25° C | +/- 0.05% Reading and +/- 0.005% URL
at Operating Temperature of 25° C | |
| 0° C to 50° C | +/- 0.2% Reading and +/- 0.2% URL
at Operating Temperature of 0° C to 50° C | +/- 0.05% Reading and +/- 0.005% URL
at Operating Temperature of 0° C to 50° C |
| -20° C to 70° C | | +/- 0.05% Reading and +/- 0.005% URL
at Operating Temperature of -20° C to 70° C |
- Operating Range: 10000:1 (0.0009 in WC to 9.0 in WC)
- Rangeability:160:1 (0 to 0.05 in WC - 0 to 8.0 in WC) - 4-20 mA Full Scale Range
- Position Effect: Less than 0.00375% URL in any plane
|
ABSOLUTE PRESSURE SENSOR ACCURACY |
OPERATING
TEMPERATURE | HIGH ACCURACY | EXTREME ACCURACY |
| 25° C | +/- 0.05% Reading and +/- 0.005% URL
at Operating Temperature of 25° C | |
| 0° C to 50° C | +/- 0.2% Reading and +/- 0.2% URL
at Operating Temperature of 0° C to 50° C | +/- 0.05% Reading and +/- 0.005% URL
at Operating Temperature of 0° C to 50° C |
| -20° C to 70° C | | +/- 0.05% Reading and +/- 0.005% URL
at Operating Temperature of -20° C to 70° C |
PROCESS TEMPERATURE SENSOR ACCURACY |
OPERATING
TEMPERATURE | ACCURACY |
| -328° F to 1562° F | +/- 0.05% Reading (abs); +/- 0.005% URL (abs) |
- QVT Compatibility: Any Class A DIN 100 ohm 385 Platinum RTD 3-Wire Sensor
|
MASS FLOW COMPUTATION ACCURACY |
OPERATING
TEMPERATURE | HIGH ACCURACY | EXTREME ACCURACY |
| 25° C | +/- 0.50% Reading 100:1 dP (10:1 flow) Range
+/- 1.0% Reading 225:1 dP (15:1 flow) | |
| 0° C to 50° C | | +/- 0.50% Reading 100:1 dP (10:1 flow) Range
+/- 1.0% Reading 225:1 dP (15:1 flow) |
| -20° C to 70° C | | +/- 0.50% Reading 100:1 dP (10:1 flow) Range
+/- 1.0% Reading 225:1 dP (15:1 flow) |
QVT-MF: MULTIVARIABLE SMART TRANSMITTER
SALES LITERATURE
PRODUCT LITERATURE
Below, you will find a variety of product literature including product catalogs, single page cut sheets and various application guides that can assist in selecting the correct flow element for your project. If you have any questions, please feel free to
contact us as well.
AIR FLOW PRODUCT CATALOGS
