Honeywell PWTA40 Series Manual de usuario

INSTALLATION INSTRUCTIONS

31-00396-01

PWTA Series Conduit Wet

Pressure Transmitters

WARNING

This product can expose you to chemicals

including 1,3 Butadiene, which is known to the

State of California to cause cancer and

reproductive harm. For more information, go to

www.P65Warnings.ca.gov

APPLICATION

The PWTA Series wet/wet differential pressure sensors

provide reliable, accurate measurement and control of

proper applications, including the monitor and control of

pump differential pressure, chiller/boiler differential

pressure drop, and CW/HW system differential pressure.

The PWTA Series is ideal for measuring pressure across

pumps, filters, heat exchangers, compressors and other

non-corrosive wet mediaÚpplications.he PWTA Series of

pressure sensors feature three field selectable pressure

ranges, bi/uni-directional modes with configurable

output: 4-20 mA, 0-5 Vdc, or 0-10 Vdc output.

IMPORTANT

• Only qualified trade installers should install this

product

• This product is not intended for life-safety applica-

tions

• Do not install in hazardous or classified locations

• The installer is responsible for all applicable codes

• De-energize power supply prior to installation or

service

Product Application Limitation:

Honeywell products are not designed for life or safety

applications. Honeywell products are not intended for use

in critical applications such as nuclear facilities, human

implantable device or life support. Honeywell is not liable,

in whole or in part, for any claims or damages arising from

such uses.

IMPORTANT

• Do NOT exceed gauge pressure rating of sensor.

• Use ONLY Honeywell gauge pressure sensors pro-

vided with your PWTA transmitter to obtain the

specified transmitter accuracy.

• Follow instructions step by step to ensure proper

setup.

Limites de l’application du produit :

Les produits Honeywell ne sont pas conçus pour des

applications de sécurité ou de sauvetage. Les produits

Honeywell ne sont pas conçus pour les applications

critiques, comme les installations nucléaires, les

dispositifs implantables dans le corps humain ou

d'assistance vitale. Honeywell n’est pas responsable, en

tout ou en partie, des réclamations ou dommages

découlant d’une telle utilisation.

IMPORTANT

• Ne dépassez PAS la pression manométrique nomi-

nale du capteur.

• Utilisez uniquement des capteurs de pression

manométrique Honeywell fournis avec votre émet-

teur PWTA pour obtenir la précision spécifiée de

l’émetteur.

• Suivez les instructions détaillées pour assurer une

configuration adéquate.

PWTA SERIES CONDUIT WET PRESSURE TRANSMITTERS

31-00396—01 2

DIMENSIONS

CONNECTION WIRING

Honeywell recommends 22 AWG stranded, 4 conductor

shielded cable to wire between the PWTA transmitter and

pressure sensors.

Terminals are rated for 24-14 AWG, 3.5 lb-in of torque.

INSTALLATION

1. Identify PWTA sensors A & B and their respective

PSIG rating.

If the expected system gauge pressure exceeds the

PSIG rating on the PWTA sensors call factory and DO

NOT proceed with install.

PWTA40-X = 100 PSIG (50/75/100 PSID)

PWTA100-X = 100 PSIG (10/20/40 PSID)

PWTA250-X = 250 PSIG (75/150/250 PSID)

2. Plumb sensors to media. Sensor A is intended for

supply pressure and sensor B is intended for return

pressure of the system. Plumb sensors to the side or

top of pipe, as plumbing to the bottom will cause

sediment to settle and could clog or affect sensor

accuracy.

It is advisable to use a single wrap of PTFE tape on

the sensor thread sealing alternative, to improve

sensor accuracy.

No bypass valve manifold is necessary. Use only

Honeywell gauge pressure sensor elements provided with

your transmitter.

Optional shutoff valves are available

Honeywell recommends closing service valves when

flushing system to prevent contaminants and water

hammer from damaging sensing elements.

3. Mount the PWTA transmitter and run conduit (if

required) between the transmitter and the sensors.

4. Run the appropriate length cables between the

PWTA transmitter and sensors.

Honeywell recommends 22 AWG stranded, 4 con-

ductor shielded cable to wire between the PWTA

transmitter and the sensors.

5. Loosen the top screw on each sensor and remove

the terminal block for wiring as shown below:

6. Run the cable through the conduit adapter and con-

nect the wires to the sensor terminal block. Note that

the conduit terminal block is numbered and color

coded to match the terminal label colors on the

PWTA transmitter.

Reassemble the sensor conduit adapter and termi-

nal block. Place the rubber cover back on the conduit

adapter and plug the adapter onto the sensor.

Tighten the assembly screw.

DO NOT attempt to plumb or tighten the sensors

while wires are attached, as you run the risk of pull-

ing wires from cable attachments.

7. Wire sensors A & B to the PWTA Transmitter termi-

nals labeled A & B respectively. For strain relief, use

the cable clamps as shown below:

8.12in

6.12in

ø 0.89in

2.6in

ø 0.875in 1.25in

1.62in

Conduit Adapter Terminal Block Rubber Cover Pressure Sensing Element

TERMINAL COLOR

TERMINAL WIRING

TERMINAL NUMBER

PWTA SERIES CONDUIT WET PRESSURE TRANSMITTERS

331-00396—01

IMPORTANT

Cable shielding should ONLY be connected to the

GROUND terminal at the PWTA transmitter. DO

NOT connect cable shielding at the pressure sen-

sor.

Picture above shows the 5 wires connected prop-

erly from the sensor to the PWTA transmitter (+/-

voltage supply (terminals 1 and GROUND), +/-

feedback from transducer (terminals 2 and 3) and

shield wire (GROUND terminal).

8. Connect conduit fittings to the sensors and PWTA

transmitter. Use water tight fittings if required by

your installation conditions.

9. Wire PWTA transmitter for voltage or current output

as shown (Remote zero wiring is optional):

10. Use the following diagram for the remaining config-

uration of your PWTA system.

11. Select 20 mA, 5 V or 10 V output using OUTPUT

switch based on wiring configuration.

12. Verify the PSIG jumper matches the PSIG rating on

the sensors.

Sensor Identification:

PWTA40-X = 100 PSIG

PWTA100-X = 100 PSIG

PWTA250-X = 250 PSIG

PWTA Transmitter Jumper Configuration:

13. Select differential pressure range using RANGE

switch. Identify if your PWTA transmitter is labeled a

PWTA40, PWTA100, or PWTA250 model. Each

Transmitter provides three PSID ranges based on the

PSIG rating on sensors A and B. Use the appropriate

123 123

ELEMENT A ELEMENT B

100

PSI

RUN

UNI

SLOW

A-B

250

BAR

TEST

FAST

B-A

4-20mA

0-5V

0-10V

123 123

Range

Output

REMOTE

V OUT

ZERO

mA OUT

(COM)

V+ PWR

ZERO

PSID Output

ELEMENT A ELEMENT B

OUTPUT

4-20mA

0-5V

0-10V

250

kPa

TEST

FAST

B-A

100

PSI

RUN

UNI

SLOW

A-B

SENSOR

PSIG []

PWTA SERIES CONDUIT WET PRESSURE TRANSMITTERS

31-00396—01 4

PSID range selection chart below based on the

transmitter label. Selected range will scale the PWTA

transmitter output.

Transmitter PSID Range Selection:

14. Inspect LCD for readings. LCD toggles between sen-

sor A reading, sensor B reading, and PSID reading.

Sensor A reading is indicated by a tick mark on the

top left of LCD. Sensor B reading is indicated by a

tick mark at the bottom left of LCD. PSID reading is

displayed without any mark at the left of the LCD.

O/R symbol will flash in bottom center of LCD if dif-

ferential pressure reading is over range. If this

occurs, select larger PSID range to avoid clipping of

readings.

15. Check remaining jumper configurations for addi-

tional setup options:

Display Units: LCD will display readings in PSI or kPa.

LCD will indicate PSI or kPa at top of screen.

Test Mode: In “Test Mode” sensor forces outputs to full-

scale for testing wiring and panel setup.

Direction Mode: PWTA transmitter can be set up in Uni or

Bi directional mode.

Response Time: In “Slow Mode” the output returns a

reading averaged over 64 samples. In ‘Fast Mode’ the

output returns the most recently calculated reading for

PSI.

Port Swap: If Sensor A was plumbed to the return (low)

side and Sensor B was plumbed to the supply (high)

side instead of re-plumbing the sensors, the Port Swap

can be utilized without a physical reconfiguration. If

this jumper is removed, transmitter is in Absolute

Mode, where values will always be reported positive.

16. To custom zero the device (optional), hold down the

zero button for 5 seconds (until the LCD blinks

once). Hold down for 10 seconds (until LCD blinks

twice) to reset/clear the zero value.

17. Seal remaining conduit knockouts on PWTA trans-

mitter.

CALIBRATION

Honeywell wet pressure sensors are factory calibrated as a

set to each PWTA transmitter.

RECYCLING

Product should not be thrown away in regular trash.

Instead, it should be recycled according to local

municipality.

RANGE

PWTA250

75 PSID

150 PSID

250 PSID

PWTA100

50 PSID

75 PSID

100 PSID

PWTA40

10 PSID

20 PSID

40 PSID

250

kPa

TEST

FAST

B-A

100

PSI

RUN

UNI

SLOW

A-B

SENSOR

PSIG

DISPLAY UNITS

TEST MODE

DIRECTION MODE

RESPONSE TIME

PORT SWAP

[]

REMOVE FOR ABSOLUTE VALUE

Table 1. Bi-Directional Mode Example range set at 100

PSID

ABDP Output

100 0 +100 20mA/10V/5V

100 50 +50 16mA/7.5V/3.75V

50 50 0 12mA/5V/2.5V

50 100 -50 8mA/2.5V/1.25V

0 100 -100 4mA/0V/0V

RoHS Compliant

PWTA SERIES CONDUIT WET PRESSURE TRANSMITTERS

Honeywell Building Technologies

In the U.S.:

Honeywell

715 Peachtree Street NE

Atlanta, GA 30308

customer.honeywell.com

® U.S. Registered Trademark

31-00396—01 M.S. Rev. 07-20

Printed in United States

TROUBLESHOOTING

SPECIFICATIONS

1One side of transformer secondary is connected to sig-

nal common. Dedicated transformer is recommended.

2For PWTA Transmitter performance accuracy, FS is

defined as the full scale of the selected range in bi-direc-

tional mode.

SPECIFICATION BY PRODUCT

Symptom Solution

No output Check wiring. Ensure power supply

meets requirements.

Pressure reading

error Verify control panel software is

configured for correct output

scaling.

Verify switch and jumper settings.

Device will not zero Hold ZERO button for full 5-seconds

until LCD blinks once.

Continue holding ZERO button for

10-15 seconds, until LCD blinks

twice, to restore to factory settings.

Power supply

Voltage output (0-5V) 12-30 VDC/24 VAC1,

20 mA max.

Voltage output (0-10V)

Current (4-20 mA)

output

15-30 VDC/24 VAC

12-30 VDC, 20 mA max.

Outputs Switch selectable 2-wire 4-20 mA,

3-wire 0-5V/10V

Pressure Ranges

(Switch selectable)

PWTA40-X

PWTA100-X

PWTA250-X

10/20/40 PSID

50/75/100 PSID

75/150/250 PSID

Operating

Temperature

Transmitter 32 to 140°F (0-60°C)

Media

Compatibility

Type Water, other 17-4 SS

compatible media

Temperature -40 to 248°F (-40-120°C)

Zero adjustment Automatic

Pushbutton, terminal block

switch input

Press button for 5 seconds

to re-zero

Hold for 10 seconds to

restore to factory settings

Sensor type Micro-machined silicon

strain gauge

PWTA40

Transmitter Accuracy2Range A: +/-4% FS

Range B/C: +/- 2% FS

PWTA100/250

Transmitter Accuracy2Range A: +/-2% FS

Range B/C: +/- 1% FS

Sensor

Performance

Accuracy < +/-0.5% BFSL

Zero Offset < +/-2% FS

Span Tolerance < +/-2% FS

Stability (1 year) +/-2.5% FS, typ

Over-range protection 2x rated pressure

Burst pressure 5x or 20,000 PSI

(whichever is less)

Pressure Cycles > 100 million

Compensated Range 30 to 130°F (0-55°C)

Temperature

Compensation

Zero, < +/-1.5% of FS

Span, < +/-1.5% of FS

Shock 100G, 11 msec, 1/2 sine

Vibration 10G peak, 20 to 2000 Hz

EMI/RFI Protection Yes

Enclosure,

Transmitter

Construction Powder coated steel

Sealing IP65 (Installed with water-

tight fittings)

Enclosure, Sensor Construction Stainless Steel, 17-4, 1/4”

MNPT, 1/2” Conduit Fitting

Product Number Max PSIG Selectable PSID Range

PWTA40-X 100 PSIG 10/20/40 PSID

PWTA100-X 100 PSIG 50/75/100 PSID

PWTA250-X 250 PSIG 75/150/250 PSID

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