Moore Industries IPF Manuel utilisateur

Field-Mount

Current-to-Pressure Transmitter

May 2016 No. 170-702-00 D

USER’S MANUAL

IPF

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Table of Contents

Introduction 1

Description 1

Calibration 3

Installation 8

Operation 12

Maintenance 12

Troubleshooting 16

TRADEMARKS:

1. Telfon

is a registered trademark of the DuPont Corporation.

2. Loctite

is a registered trademark of Loctite Incorporated.

IPF

Page 1

Introduction

The field-mount version of Moore Industries’ Current-

to-Pressure Transmitter enclosed in an all-weather,

thermoplastic housing is called the IPF. It is a

rugged, two-wire transmitter whose design meets the

specifications for several types of water- and dust-

tight, and corrosion-resistance certifications. The

material used in the unit’s housing makes it ideal for

use under even the most arduous of environmental

conditions.

This manual contains the descriptive and instruc-

tional information needed to install, operate, and

maintain the IPF. It includes a brief explanation of

the unit model number, a table of its performance

and operational specifications, instructions for

calibration, information on installation and mainte-

nance procedures, and checklist of troubleshooting

recommendations.

Appendix A consists of information on instrument-

quality air and filtration, essential for optimum IPF

performance and reliability.

Notes and Cautions, where they appear in text or

illustrations, are used to call attention to practices

that otherwise may result in inconveniences for the

user (Notes) or damage to the IPF (Cautions).

Description

The IPF is used to effect changes in pneumatic

throughput pressure in a process loop. These

changes are proportional to, and based upon,

changes in a standard, process current input to the

unit. There are two options for input (current), and

eight for output (pressure).

The IPF housing is constructed of rugged, all-

weather, polyetherimide thermoplastic. It is designed

to meet the specifications of several third party,

industrial certifying agencies.

Contact your Moore Industries Sales Representative

for the most current list of IPF certifications and

approvals.

The unit has two electrical conduit dimension op-

tions; a 1/2-inch by 14 NPT female port (WP and

WPP) , and an M20 x 1.5 metric female port (WPM

and WPMP). Pneumatic connection fittings are

female, 1/4-inch by 14 NPT, standard.

NE-Type Units. IPF’s equipped with the NE Option

have a separate, external enclosure attached to the

main unit housing. This enclosure contains the

terminals for the connection of process current input.

The IPF can be installed in a surface-mount configu-

ration (WP or WPM), or, with the optional hardware,

on 2-inch pipe (WPP and WPMP). The symmetrical

arrangement of the mounting holes in the base of the

unit housing provides for mounting on either horizon-

tal or vertical piping.

The IPF housing affords the unit excellent protection

against shock, vibration, and corrosion. The unit is

also inherently immune to radio frequency and

electromagnetic interference (RFI/EMI).

Options

There are several options available for the IPF. The

following list provides an overview. A complete list,

including information on available mounting hard-

ware and more data on the current IPF approvals

and certifications, is available from your Moore

Industries Sales Representative, or directly from the

factory.

FR1 Option – Coalescing Filter/Regulator w/Integral

Gauge.

Maximum 4 scfm flow at 90 psig inlet

pressure. Removes particulate matter down to 0.01

micron in size. Scaled in 0-60 pounds per square

inch (psi) and 0-4 bars.

TF1 Option – Plastic Tube Fitting.

For use with 1/4-

inch (O.D.) tubing. Option not available with FR1.

Table 1 lists the performance and operational

specifications for the IPF.

IPF

Page 2

Characteristic Specifications

Input Factory-configured.

4-20 mA into 200 , nominal.

10-50 mA into 75 , nominal (available with 3-15 psig output units only).

Output

Factory-configured.

0.2-1 bar (20-100 kPa)

1-0.2 bar (100-20 kPa)

3-15 psig

15-3 psig

3-16.6 psig

3-27 psig

Supply

Pressure

Factory-configured.

20 psi (approximately 140 kPa, 1.4 bar) nominal.

35 psi (approximately 241 kPa, 2.41 bar) nominal. 35 psi required for 3-27 psig output units.

Filtered, regulated, instrument-quality air only. 20 psi units accommodate up to 30 psi without

damage. 35 psi units accommodate up to 40 psi without damage.

Controls Span: Multiturn pot electronically adjusts full-scale output to 100% of rated span.

Zero: Multiturn adjustment screw mechanically provides offsets of ±3% of span.

Performance

Accuracy: Error less than 0.5% of span, including the combined effects of linearity,

hysteresis, and repeatability. For 3-27 psig output units or 10-50 mA input units, error not to

exceed 1% of span. Linearity defined per SAMA standard PMC 20.1-1973.

Ambient Temperature Effect: ±0.1% of span per °C change within the rated ambient

temperature operating range (less than ±0.055% of span per °F change).

Supply Pressure Deviation Effect: Maximum of 0.3% per 1.4 psig change

(0.3% per 0.1 bar).

Mounting Position Effect: Negligible. Unit should be calibrated in final orientation.

RFI/EMI Effect: ±0.1% of span in field strengths of 10 V/m at frequencies of 20-500 MHz.

Step Response: 0.3 seconds into 100 ml (6 cu in) at 90% of span.

Pneumatic

Load Air Capacity: 1.4 scfm (approximately 2.7 kg/hr)

Air Consumption: 0.1 scfm (approximately 0.2 kg/hr) dead-ended.

Environmental

Ratings Recommended Ambient Temperature Operating Range: –20 to 60 °C (–4 to 140 °F).

Weight Approximately 800 g (1 lb, 12 oz)

NOTE: Refer to Installation Section for unit outline dimensions.

Table 1. IPF Performance and Operational Specifications

IPF

Page 3

Model/Serial Number. Moore Industries uses a

system of individual unit model and serial numbers to

keep track of factory configuration and options for

IPF’s shipped or serviced.

If service information or assistance is required for

your IPF(s), be sure to provide the factory with the

unit model and serial numbers to assist our profes-

sional technicians in their effort to give you prompt,

efficient service.

The IPF serial and model numbers can be found on

a metal tag on the side of the unit housing. The

example outlines the significance of each field of

information in a typical IPF model number.

Calibration

Every IPF is fully tested and calibrated at the factory

prior to shipment. Before installation, however, your

IPF’s should be bench checked to verify proper

operating levels, and to set the desired unit zero and

span.

Calibration should be conducted in an appropriate

testing environment. By carrying out the procedures

at a technician’s bench or similar lab-type setup, any

unit damage that may have occurred during ship-

ment can be discovered safely, i.e., isolated from the

intended application.

Unit Type

Input

Output

Supply Pressure

Options(s)

Housing

IPF / 4-20MA / 3-15PSIG / 20PSI / -FR1 [ WP ]

EXAMPLE

IPF

Page 4

Equipment Specifications

Current Source Calibrated, adjustable. Must be capable of discrete output levels within the appropriate, rated

range for the unit under test; 4-20 or 10-50 mA. Refer to model number and table 1.

DC Milliammeter Calibrated. Accuracy of ±0.1% (optional equipment)

Air Supply Filtered, regulated, instrument-quality. Refer to appendix A of this manual for more detailed

specifications/filtration requirements.

Air Pressure

Gauges Two calibrated gauges; #1 with accuracy of ±2%, #2 with accuracy of ±0.1%.

Pneumatic Test

Load Calibrated. Volume of approximately 120 ml (75 in 3), per IEC spec #770.

Screwdriver Slotted-tip. Head width of 5 mm (0.1875 in), maximum.

Calibration Equipment

Table 2 lists the equipment required to calibrate the

IPF. This equipment is not supplied by Moore

Industries, but should be available in most labs or

maintenance areas.

Calibration Setup

To prepare the IPF for calibration, disassemble the

unit as shown in figure 1, and connect it to your

calibration equipment as shown in figure 2, which

shows the calibration setup.

Unit Connections and Controls. The IPF has two,

labeled terminals on its faceplate, located under the

top, protective cover of the housing. NE-type units’

terminals are enclosed in a separate, external sub-

housing labeled “TERMINAL CONNECTIONS” .

The terminal labeled “+ I” is for connection of the

positive current input, and the terminal labeled “–I”

is for negative connections.

The two IPF controls are also located inside the unit

housing on the faceplate. They consist of a me-

chanical adjustment screw and an electronic potenti-

ometer (pot), each accessed through holes in the

unit front panel. The following labels are used:

...controls the setting for unit zero.

...controls the setting for unit span.

Table 2. IPF Calibration Equipment

IPF

Page 5

The Zero adjustment screw is a cone-tipped, ma-

chined screw that mechanically provides a control

range for zero offsets of ±3-percent of rated unit

span.

The Span pot electronically adjusts unit full-scale

output to 100-percent of rated span. It requires

approximately 22 turns to move its wiper from one

extreme to the other, clockwise for maximum or

counterclockwise for minimum span.

Figure 1. IPF Disassembly, Controls, and Terminals for Calibration

TERMINAL

BLOCK

DETAIL

+I -I

N-TYPE

TERMINAL

BLOCK

DETAIL

"TERMINAL CONNECTIONS"

COVER

ZERO

ADJUST SCREW

INTERNAL ASSEMBLY

REMOVAL TAB

SPAN POTENTIOMETER

RUBBER

RETAINING

STRAP

NE-TYPE

It is equipped with a slip clutch to prevent damage if

the adjustment is turned beyond the wiper stop.

Always use clean, dry, instrument air, whether

calibrating or operating the IPF. Refer to the appen-

dix of this manual for information on filtration.

All pneumatic lines used in calibration and operation

must be “blown down” prior to their being connected

to the IPF. Any condensation or oil residue in the

lines, if introduced into the pneumatic chambers of

the IPF, may result in poor unit performance.

IPF

Page 6

1. Orient IPF as it will be positioned in the applica-

tion. That is, if unit is to be oriented vertically

when installed, orient vertically to calibrate.

2. With zero air input (supply off), connect 1/4-inch

pneumatic tubing between appropriate output

port of regulated instrument air supply and

calibrated pressure gauge #1 (accuracy of ±2%

of span). Connect another hose from gauge to

port labeled “SUPPLY” on IPF.

3. Connect 1/4-inch pneumatic tubing between IPF

port labeled “OUTPUT” and appropriate port of

pressure gauge #2 (accuracy of ±0.1% of span),

and from that gauge to appropriate pneumatic

load.

4. Run current source wiring through conduit

opening in housing, and to front panel of IPF.

For NE-type units: Route wiring through

conduit opening in external sub-housing/terminal

block assembly.

5. Connect positive lead of adjustable current

source to +I terminal of IPF. Connect negative

source lead to –I IPF terminal.

A dc milliammeter may also be connected to

verify level of current input.

6. When connections are complete, apply 0% of

appropriate input current; 4 mA for 4-20 mA

units, or 10 mA for 10-50 mA units.

7. Apply appropriate, filtered, instrument-quality air

to supply line; 20 or 35 psi (40 kPa, or 1.4 bar).

Verify appropriate supply pressure by checking

Supply Pressure field of unit model number.

Figure 2. IPF Calibration Setup

MILLIAMMETER

ADJUSTABLE

CURRENT SOURCE

PRESSURE GAUGE

(ACCURACY ±2%)

PRESSURE GAUGE

(ACCURACY ±0.1%)

REGULATED

INSTRUMENT

AIR SUPPLY

OUTPUT PORT SUPPLY PORT

IPF

–I

–

PNEUMATIC

TEST LOAD

+–

IPF

Page 7

Table 3 lists the values to be used during calibration.

Refer to the table when performing the following:

1. Check unit zero setting. Monitor reading of

pressure gauge #2 (output), and turn zero adjust

screw counterclockwise to lower output, clock-

wise to raise output. Set zero adjust screw so

that pressure output is at 0% of appropriate

range (±3%) when 0% input is applied.

2. Check unit span setting. Increase input to 100%

of rated span; 20 mA for 4-20 mA units, or 50 mA

for 10-50 mA units.

3. Monitor reading of pressure gauge #2 (output),

and adjust span pot so that reading is at 100% of

appropriate pressure range for your unit.

Check the values listed in Table 3.

8. Set span pot to approximate mid-scale (22 turns

in either direction, then approximately 11 turns in

the opposite direction).

9. Set zero adjustment screw fully clockwise, then

five turns counterclockwise.

10. Allow approximately 5 minutes for calibration

setup to stabilize.

Calibration Procedure

To perform the recommended bench check for the

IPF, first perform the setup as described in the

preceding section. The calibration procedure con-

sists of a basic check and adjustment of unit zero

and span, based on the reading of pressure gauge

#2 (accuracy of ±0.1%).

IPF Output

0% of

Rated Input

Range*

(4 or 10 mA)

100% of

Rated Input

Range*

(20 or 50 mA)

Verify by

Applying

25% of

Rated Input

Range*

Verify by

Applying

50% of

Rated Input

Range*

Verify by

Applying

75% of

Rated Input

Range*

Configuration* Adjust Zero

until Gauge

#2 Reads:

Adjust Span

until Gauge

#2 Reads: Gauge #2 will Read:

3-15 psig 3 psi 15 psi 6 psi 9 psi 12 psi

15-3 psig 15 psi 3 psi 12 psi 9 psi 6 psi

0.2-1 bar 0.2 bar 1 bar 0.4 bar 0.6 bar 0.8 bar

1-0.2 bar 1 bar 0.2 bar 0.8 bar 0.6 bar 0.4 bar

3-27 psig 3 psi 27 psi 9 psi 15 psi 21 psi

3-16.6 psig 3 psi 16.6 psi 6.4 psi 9.8 psi 13.2 psi

20-100 kPa 20 kPa 100 kPa 40 kPa 60 kPa 80 kPa

100-20 kPa 100 kPa 20 kPa 80 kPa 60 kPa 40 kPa

* Verify appropriate output configuration and percentage of rated input range against unit model number.

Table 3. IPF Calibration Values

IPF

Page 8

4. Repeat steps 1 through 3 until IPF outputs 0% of

rated pressure range at 0% current input, and

100% of output pressure range at 100% current

input.

5. Verify the accuracy of your adjustments by

inputting the appropriate percent of span levels

listed in table 3.

Installation

The installation of the IPF is carried out in three

phases. The first phase is the physical mounting of

the unit. Next is the electrical connections phase,

and finally, pneumatic connections can be made. It

is strongly recommended that IPF’s be installed in

this order.

It is also strongly suggested that each unit be

calibrated according to the instructions in this manual

before being placed into service.

The IPF may be installed at any angle; either sur-

face-mounted, or attached to pipe or round conduit.

Consideration should always be given to any require-

ment that may arise for front panel access, checking

the fittings, or reading the FR1 Option gauge and

draining its filter.

Closed Loop/Open Loop. The IPF should be

installed in a closed loop. A closed loop is the best

way to measure a control variable, to determine if a

deviation from a desired value exists, or to automati-

cally provide feedback for actuator loading pressure.

An open loop has inherent limitiations that are not

consistent with precise control. Long term drift of the

loop dynamics, load fluctuations that require constant

adjustments of the actuator loading pressure, and

performance quality variations due to inconsistencies

between operating personnel are all problems

commonly associated with open loops. A controlled

variable cannot be directly measured in an open

loop; this prevents compensating adjustments to the

system input.

Mounting

Figure 3 gives the IPF’s outline dimensions. The

illustration also gives the dimensions of the available

FR1 Option hardware, recommended for most

installations, and the external sub-housing used for

the terminal block with NE-type IPF’s.

After placing the IPF in the desired location and

orientation, secure the housing with the optional pipe

mounting hardware, or other appropriate fasteners.

Figure 4 illustrates IPF mounting using optional pipe

mounting hardware. Note that the holes in the

mounting plate that comprises the base of the IPF

are symmetrical. This allows the unit to be installed

on either horizontal or vertical pipes.

The thermoplastic polyetherimide compound used in

the housing provides excellent protection from

chemical exposure. The housing is also unaffected

by electrolytic corrosion, as may be found in and

around salt water and many other industrial environ-

ments. Note, however, that this type of IPF is

designed, tested, and built for installation outdoors or

in well ventilated areas.

Refer to the WP/WPM housing data sheet in the

Moore Industries Product Catalog for more informa-

tion regarding chemical environments compatibility,

or contact your Moore Industries Sales Representa-

tive for assistance.

Electrical Connections

Refer to figure 1 in the Calibration Setup Section of

this manual for instruction on the level of disassem-

bly required to make the electrical connections to the

IPF.

Figure 5 is a generic diagram showing the unit’s

installation hookup.

To complete connections, route wiring through

conduit port, or through port in sub-housing for NE-

type units, to terminal block, and use a slotted-tip

screwdriver with a maximum head width of 3 mm

(0.125 inch) to loosen the terminal screws.

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