FlowKinetics FKS 1DP-PBM-E Manuale utente

FKS 1DP-PBM-E Multi-Function Meter

Pressure & Speed

User’s Manual

April 19, 2018

Contact Information

Email:

[email protected]

Web:

www.flowkinetics.com

Mail:

FlowKinetics LLC

4700 Shoal Creek Dr.

College Station, TX 77845

USA

Telephone:

(979) 680-0659

(888) 670-1927

Fax:

(979) 680-0659

IMPORTANT

Read all instructions and

precautions in this manual

before use. Keep this manual

for future reference.

Table of Contents Page

LIMITATIONS OF USAGE AND CAUTIONS 4

WARRANTY 4

Unpacking / Parts List 5

Overview / Features 6

Description of Controls & Display 7

How Do I: 8

Q: How Do I Insert Batteries / Use Wall Power? 8

Q: How Do I Connect the Tubing? 8

Q: How Do I Switch the Unit On (and Off)? 9

Q: How Do I Adjust the Screen Contrast? 9

Q: How Do I Zero the Meter? 9

Q: How Do I Know if the Batteries Need Replacement? 9

Q: How Do I Know If the Meter is Overloaded? 9

Q: How Do I Change the Smoothing of My Data? 9

Measuring Pressure 10

Q: How Do I Change Units? 10

Q: How Do I Measure the Minimum (L) and Maximum (H) Reading 10

Q: How Do I Reset Min/Max? 11

Q: How Do I Hold or Freeze the Display? 11

Q: How Can I Estimate if the Pressure May Be Too Unsteady for Accurate Measurement?

Measuring Speed 11

Q: How Do I Change Units? 11

Q: How Do I Measure the Minimum (L) and Maximum (H) Reading 11

Q: How Do I Reset Min/Max? 11

Q: How Do I Hold or Freeze the Display? 11

Q: How Can I Estimate if the Air Speed May Be Too Unsteady for Accurate Measurement?

Q: What Probes can I use with the FKS 1DP-PBM-E? 12

Q: How Do I Connect the Pitot Probe? 12

Q: How Do I Change K? 12

Q: How Do I Measure Standard Speed? 13

Q: How Do I Measure Actual Speed? 13

Q: How Do I Check the Stored Values for K, Patm and T? 14

Q: How Do I Set K, Patm and T to Default (Standard Conditions)? 14

Measuring Flow Rate 15

The Menu System 15

Maintenance 16

Operational Maintenance 16

Battery Maintenance 16

Specifications 17

Appendix A Performing a Pitot Probe Duct Traverse 20

LIMITATIONS OF USAGE AND CAUTIONS

The FKS series of instruments are not intrinsically safe, and must not be used in dangerous or

hazardous areas. Servicing of these instruments incorporating battery changing must only occur

in a safe area. Use of the FKS series may require working in a hazardous environment.

Necessary safety precautions must be followed.

FlowKineticsTM LLC’s products (including the FKS series) are not authorized for use as any

component in a life support system or device or as component of an aircraft’s on board flight

system. Life support systems or devices are defined as any system that can sustain, monitor or

support life.

The pressure transducers used by the FKS system are compatible with most non-corrosive

gases, however toxic gases are not suitable, nor are liquid pressure measurements.

Any attempts to service or modify or alter the product in any way, will void the warranty and will

negate any right of claim against FlowKineticsTM LLC, relating to any liability in respect of the

product.

WARRANTY

All of FlowKineticsTM LLC's instruments have been assembled using strictly defined and

controlled procedures and tests, and are warranted against any faults in workmanship and

materials for one year from the date of purchase. Liability under this warranty is limited to repair

or replacement F.O.B. factory of any parts which prove to be defective within that time or

repayment of the purchase price at the Seller's option provided the product has been returned,

transportation prepaid, within one year from date of purchase. In no case is the Seller liable

beyond replacement of product F.O.B. factory or the full purchase price. This warranty does not

apply if the product or equipment is abused, altered, used at ratings above the maximum

specified, used with disregard of instructions and specified operating procedures, or otherwise

misused in any way. All technical advice, recommendations and services are based on technical

data and information which the Seller believes to be reliable and are intended for use by persons

having skill and knowledge of the application, on their own judgment. There are no implied

warranties of merchantability or of fitness for a particular purpose for goods covered hereunder.

In no event will the manufacturer be responsible for consequential, incidental or special damages

resulting from the use of this product.

Buyer's Remedies: The buyer’s exclusive and sole remedy on account of or in respect to the

furnishing of non-conforming or defective material shall be to secure replacement thereof as said

above. The seller shall not in any event be liable for the cost of any labor expended on any such

material or for any special, direct, indirect, consequential or incidental damages to anyone or any

property by reason of the fact that it shall have been non-conforming or defective.

Repairs: Authorization must be obtained before shipping items to FlowKinetics™ LLC for

repairs. When requesting a repair please include a detailed description of the problem with the

item, date of purchase, your P.O. or reference number and our invoice number if available.

Unpacking / Parts List

Carefully unpack your FKS 1DP-PBM-E meter. Ensure that there is no damage to

the instrument. If any components are damaged, make a record and contact the

shipper. The instrument is supplied with (some accessories are optional):

Item

Description

Quantity

FKS 1DP-PBM-E

Multi-function meter

Tubing

Flexible tubing for pressure connection

FKS Manual

User reference

WPA

Wall power adapter

Optional

Cable6

6’ Serial cable

Optional

SwiftScan CD

and manual

Real time software for monitoring the

FKS outputs and downloading them to

a PC

Optional

Overview / Features

The FKS 1DP-PBM-E is a multi-function meter designed for accurate pressure and

speed measurement. The meter is exceptionally easy to use due to its prompt

driven user interface and intuitive functioning.

Features of the PBM-E include:

Highly configurable operation

Differential, static and gauge pressure

Electronic Zero function to remove drift

Metric and Imperial units

Minimum & maximum reading

Data hold (screen freeze)

Turbulence indicator

K factor

Speed (both standard and actual)

Density correction

Intelligent automatic damping (with user selectable averaging or

smoothing)

PC compatibility (optional software)

Variable screen contrast

Wall or battery power

Description of Controls & Display

Controls of the FKS 1DP-PBM-E are shown below:

Example Display Presentations for Pressure and Speed are Shown Below:

Positive (+) pressure

connection barb

On/Off button

Range control or

selector

External power jack

plug

Negative (-) or Reference

pressure connection barb

Hold/ Zero button

Screen contrast control

PC serial port connector

P=1.67inH2O T

H2.01 L-0.21

V=6702ft/min

H8291 L6231

Measured pressure

Maximum recorded

value (H)

Calculated speed

Maximum recorded

value (H)

Turbulence indicator

(appears if Pressure

fluctuations > 10%)

Minimum recorded

value (L)

Minimum recorded

value (L)

How Do I:

The majority of this manual is written in the form of a How Do I… Some topics are

repeated to maintain description continuity.

Q: How Do I Insert Batteries / Use Wall Power?

Batteries: The unit uses two 9V batteries. The batteries are inserted by removing

the cover located on the back of the instrument. The cover slides off. The ribbon

under the batteries can be used to ease battery removal. Only use new batteries

(dry Alkaline leak proof) and discard the old batteries in compliance with

regulations.

Wall Power: An AC adaptor power supply can be supplied with the instrument as

an option. The adaptor can operate from 100VAC to 240VAC 50-60Hz supplies and

provides 1100mA at 9VDC. The adaptor has the facility for easy interchange

between US, European, English and Australian plugs. To use, simply insert the

jack from the adapter into the jack plug on the face of the instrument (see

Description of controls). It is not necessary to remove the batteries, as they are

automatically disconnected. Do not attempt to use the supplied adapter as a

battery charger.

CAUTION: Use of any power adaptor other than that supplied (optional) with

the instrument will remove any rights of claim against FlowKineticsTM LLC,

relating to product liability or consequential damage against a third party

and will void the warranty. If an alternative adaptor is used, its output

voltage range must be regulated and within:

DCADAPTORDC VVV 129

If the meter is stored, or not used for over a week, the batteries must be removed.

Q: How Do I Connect the Tubing?

Pressure: The supplied flexible tubes attach over the barbs labeled P+ and P-. A

higher pressure at port P+ than port P- will result in an indicated positive pressure.

To measure static or gauge pressure, tubing can be connected to the P+ barb. An

indicated positive pressure shows that the static or gauge pressure is higher than

atmospheric (or the pressure at P-).

Speed: To measure speeds, the P+ port should be connected to the Total

pressure port on the Pitot and the P- port connected to the Static port (see How

Do I Connect the Pitot Probe?) of the Pitot probe.

CAUTION: The FKS series are not suitable for use with toxic or corrosive

gases or for liquid pressure measurement. The series are not approved for

use in any life support application.

Q: How Do I Switch the Unit On (and Off)?

To switch the meter on, press in the On/Off button. You will hear and feel a click

indicating unit power up. To switch the unit off, press the On/Off button again. If

the Range selector is set to a pressure unit, the instrument will show the meter

model description and then indicate that that the instrument is performing an

electronic Zero. If the Range selector is set to a speed unit, the meter will

additionally show the stored speed and flow settings (K, Patm and T) in both

metric (kPa and C) and imperial units (inHg and F). Cycling the meter On/Off

can be used to rapidly check the speed/flow settings.

Q: How Do I Adjust the Screen Contrast?

Screen contrast is adjusted by rotating the screen contrast knob. Only use your

fingers to operate this control.

Q: How Do I Zero the Meter?

Zeroing is easily accomplished using the inbuilt electronic Zero. Disconnect any

pressure source from the meter. Depress the Hold/Zero button for greater than 2

seconds. The meter will indicate that the Electronic Zero is in progress. Zeroing

should be performed periodically while taking measurements to ensure accuracy.

Q: How Do I Know if the Batteries Need Replacement?

If the battery voltage is too low, the message Low Battery will be

displayed at startup. Also a Bwill appear at the top RHS of the display wile the

meter is operating. If the battery is too drained for the meter to work properly, the

message Battery Depleted will be displayed at startup and the meter

will not continue until the batteries are replaced or a wall power supply is used.

Q: How Do I Know If the Meter is Overloaded?

If the pressure rating for the transducer is exceeded, the meter will indicate on the

display an overload condition (Overload). Pressure should be relieved

immediately to avoid damage.

CAUTION: The maximum differential pressure that may be imposed on the

transducer is 5psi, with a maximum line pressure of 10psi.

Q: How Do I Change the Smoothing of My Data?

The FKS 1DP-PBM-E meter contains sophisticated routines to process your

measurements (very useful when they are unsteady or fluctuating). Two methods

can be used to smooth your readings. An exponential moving average (sometimes

called exponential smoothing) can be used (somewhat similar to a normal moving

average) and of the form:

2)1(12*PffPP 

(Exp. Smoothing)

where P2* is the new pressure estimate (shown on the display), P2 is the latest

pressure value measured from the transducer and P1 is the last pressure

estimate. In the PBM-E meter, fis adjusted continuously (adaptive) depending on

the level of fluctuation of the measured pressure. If there is little fluctuation f will be

close to zero. If fluctuation is large, fhas a maximum value of 0.9. Thus fis

continuously adjusted by the meter (between 0 and 0.9) to provide the most stable

reading.

The second method that can be used is a simple averaging of readings

(Average). The meter will read the output from the pressure transducer

multiple times, and then average these values. The meter will continuously adjust

the number of averages (from 5 to 75 averages). This operation may be

noticeable, as the screen update rate may change as the meter changes (adapts)

the number of averages to give the best and most stable estimate of the pressure

or speed.

To select the method you want set the Range selector to Menu. The menu will

cycle through various functions. When Smooth/Average appears, rotate

(any direction) the Range control to select it. The menu will cycle, Exp.

Smoothing followed by Averaging. Rotate the Range selector (any

direction or unit) when the desired method is displayed. The instrument will then

return to measurement mode. The method you selected is stored in memory and

will be retained after switching the unit off. For very unstable readings, the

exponential smoothing may offer a more stable estimate, where the averaging will

offer a quicker estimate.

Measuring Pressure

Q: How Do I Change Units?

Units are changed by rotating the Range selector knob. The knob has no stop and

can rotate more than 360 degrees.

Q: How Do I Measure the Minimum (L) and Maximum (H) Reading

The Minimum and Maximum readings are continuously shown by the FKS meter

on the second line of the display. The maximum reading is preceded by H and the

minimum reading is preceded by L. No units are shown but correspond to the units

displayed on the first line.

Indice

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