APG RP Resistive Chain User Manual

PRODUCTS

AUTOMATION

Operator’s Manual

GROUP, INC.

RPE & RPX

Series

Float Level Sensors

Rev. B3 10/09

Doc. 9002671

Automation Products Group, Inc.

APG...Providing tailored solutions for measurement applications

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RPE & RPX Series Rev. B3, 10/09

Table of Contents

Warranty ......................................................................................... 3

Description...................................................................................... 4

Installation ................................................................................... 5-6

Hazardous Mounting....................................................................7-8

Calibration Procedur es................................................................... 9

Wiring............................................................................................ 10

Inspection & Maintenance ............................................................ 11

Specifications ........................................................................... 12-13

Certificate of Compliance ....................................................... 14-17

2

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Automation Products Group, Inc.

Rev. B3, 10/09 RPE & RPX Series

• Warranty and Warranty Restrictions

APG warrants its products to be free from defects of material and workmanship
and will, without charge, replace or repair any equipment found defective upon
inspection at its factory, provided the equipment has been returned,
transportation prepaid, within 24 months from date of shipment from factory .

THE FOREGOING WARRANTY IS IN LIEU OF AND EXCLUDES ALL OTHER
WARRANTIES NOT EXPRESSLY SET FORTH HEREIN, WHETHER
EXPRESSED OR IMPLIED BY OPERATION OF LAW OR OTHER WISE
INCLUDING BUT NOT LIMITED T O ANY IMPLIED WARRANTIES OF
MERCHANT ABILITY OR FITNESS FOR A P AR TICULAR PURPOSE.

No representation or warranty, express or implied, made by any sales
representative, distributor, or other agent or representative of APG which is not
specifically set forth herein shall be binding upon APG. APG shall not be liable
for any incidental or consequential damages, losses or expenses directly or
indirectly arising from the sale, handling, improper application or use of the
goods or from any other cause relating thereto and APG’s liability hereunder, in
any case, is expressly limited to the repair or replacement (at APG’s option) of
goods.

Warranty is specifically at the factory. Any on site service will be provided at
the sole expense of the Purchaser at standard field service rates.

All associated equipment must be protected by properly rated electronic/
electrical protection devices. APG shall not be liable for any damage due to
improper engineering or installation by the purchaser or third parties. Proper
installation, operation and maintenance of the product becomes the
responsibility of the user upon receipt of the product.

Returns and allowances must be authorized by APG in advance. APG will
assign a Return Material Authorization (RMA) number which must appear on
all related papers and the outside of the shipping carton. All returns are subject
to the final review by APG. Returns are subject to restocking charges as
determined by APG’s “Credit Return Policy”.

Automation Products Group, Inc.

APG...Providing tailored solutions for measurement applications

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3

RPE & RPX Series Rev. B3, 10/09

• Description

The RPE/RPX utilizes reed switches in the instrument’s stem and a permanent
magnet in the float. As the float rises or falls with the level of the liquid, the
magnet inside the float act on the reed switches inside the stem and provides a
resistive-chain output. The RPE/RPX is also available with optional
electronics that convert the resistance output into a 4-20mA signal.

4

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Automation Products Group, Inc.

Rev. B3, 10/09 RPE & RPX Series

• Installation

- Unpacking -

When unpacking the instrument, exercise care not to subject the instrument to
mechanical shock. After unpacking, visually inspect the instrument for
damage.

- Environment -

The RPE/RPX series intruments can be installed indoors or outdoors in an
area which meets the following conditions:

1. The ambient temperature does not exceed -400F to 1850F (-400C to 850C).
NOTE: It is recommended that a sun shield be installed over the housing if
exposed to direct sunlight.

2. The medium temperature does not exceed -400F to 1850F (-400C to
850C).

3. Relative humidty up to 100%

4. Pollution Degree 2

5. Measurment Category II

6. Altitude 2000 m or less.

7. Locate the sensor away from strong magnetic fields such as those
produced by motors, transformers, solenoid valves, etc.

8. The medium is free from metallic substances and other foreign matter.

9. No corrosive gases such as NH3, SO2, Cl2, etc.

10. No excessive vibration

11. Ample space for maintenance and inspection.

Automation Products Group, Inc.

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5

RPE & RPX Series Rev. B3, 10/09

• Installation

- Location -

Do not locate the RPE/RPX sensor near inlets/outlets.
If there is surface wave action, then it may be advisable to use a stilling tube. If
a stilling tube is used, drill vent holes in the tube and use a spacer to assure the
float has free travel inside the tube.

Wave action will cause signal bounce. Use a stilling tube to provide a

smooth output signal.

- Mounting -

The RPE/RPX can be mounted up to 200 from vertical.

1. Flange Mounting
Provide the compatible mating flange on the tank and install using a suitable
gasket.

2. Plug Mounting
Provide the compatible female boss on the tank and install the RPE/RPX with
a suitable gasket, O-ring, or thread tape.

6

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Automation Products Group, Inc.

Rev. B3, 10/09 RPE & RPX Series

Automation Products Group, Inc.

APG...Providing tailored solutions for measurement applications

Tel: [phone] • Fax: [phone] • www .apgsensors.com • [e-mail]

7

RPE & RPX Series Rev. B3, 10/09

APG...Providing tailored solutions for measurement applications

Automation Products Group, Inc.

8

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Rev. B3, 10/09 RPE & RPX Series

R4

R9

S

TI 200

1

R

3

R5

J1

R7

R1

R8

D1

R

2

C1

C2

D2

C3

Q

1

U

2

R6

U3

+24vdc

4 to 20ma Out

SPAN

OF

F

S

E

T

R

E

D

BLK

WH

OUT

2

4

V

Offset (20 mA)
Adjustment

Zero (4 mA)
Adjustment

• Calibration Procedure (for models equiped with 4-20mA

output option)

1. Set DC power supply voltage at 24VDC.

2. Connect ammeter in series with loop.

3. Move float to the bottom position

4. Adjust the Offset potentiometer until meter reads 4ma

5. Move float to top position

6. Adjust the Span potentiometer until meter reads 20ma.

7. Repeat steps 3 – 6 for final adjustment.

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9

RPE & RPX Series Rev. B3, 10/09

Choose Loop Resistance

to match application

4.25

Ammeter

COM

mA

Power Supply
(24Vdc)

+

-

R4

R

9

S

TI

2

00

1

R

3

R

5

J

1

R

7

R

1

R8

D

1

R2

C1

C

2

D

2

C3

Q1

U

2

R6

U

3

SPA

N

O
F

FSET

R

ED BLK WH

O

U

T 24V

4 to 20ma Out

+24vdc

• Wiring (for models equiped with 4-20mA output option)

10

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Rev. B3, 10/09 RPE & RPX Series

• Inspection and Maintenance

Periodic inspection is necessary to keep your RPE/RPX unit in good
working order.

Keep the sensor clean.

Never leave the housing cover off. If the cover becomes damaged or is
misplaced, order a replacement immediately .

If sediment or other foreign matter is trapped between the stem and the
float, detection errors may be caused. Keep the float and stem clean.

Automation Products Group, Inc.

APG...Providing tailored solutions for measurement applications

Tel: [phone] • Fax: [phone] • www .apgsensors.com • [e-mail]

11

RPE & RPX Series Rev. B3, 10/09

• RPE Specifications

Resolution 0.39 in. (10mm)

Maximum Length 78 in. (2000mm)

Maximum Process Temperature -400 to 1850F

(-40 to 85°C)

Housing Material Die Cast

Aluminium

Housing Rating NEMA 4

Probe Material 304SS / 316SS

Supply Volt age 12 to 24 VDC

Output 4 to 20 MA

12

APG...Providing tailored solutions for measurement applications

Automation Products Group, Inc.

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Rev. B3, 10/09 RPE & RPX Series

• RPX Specifications

Resolution 0.39 in. (10mm)

Maximum Length 78 in. (2000mm)

Maximum Process Temperature -400 to 1850F

(-40 to 85°C)

Housing Material Die Cast

Aluminium

Housing Rating NEMA 4

Probe Material 304SS / 316SS

Supply V oltage 12 to 24 VDC

Output 4 to 20 MA

CSA Hazardous Ratings:

Explosion-Proof Class 1 Div . 2

Groups C, D

Intrinsically Safe Class 1 Div . 1

Groups C, D

Automation Products Group, Inc.

APG...Providing tailored solutions for measurement applications

Tel: [phone] • Fax: [phone] • www .apgsensors.com • [e-mail]

13

RPE & RPX Series Rev. B3, 10/09

14

APG...Providing tailored solutions for measurement applications

Automation Products Group, Inc.

Tel: [phone] • Fax: [phone] • www.apgsensors.com • [e-mail]

Rev. B3, 10/09 RPE & RPX Series

Automation Products Group, Inc.

APG...Providing tailored solutions for measurement applications

Tel: [phone] • Fax: [phone] • www .apgsensors.com • [e-mail]

15

RPE & RPX Series Rev. B3, 10/09

16

APG...Providing tailored solutions for measurement applications

Automation Products Group, Inc.

Tel: [phone] • Fax: [phone] • www.apgsensors.com • [e-mail]

Rev. B3, 10/09 RPE & RPX Series

Automation Products Group, Inc.

APG...Providing tailored solutions for measurement applications

Tel: [phone] • Fax: [phone] • www .apgsensors.com • [e-mail]

17

RPE & RPX Series Rev. B2, 11/08

Notes

18

Automation Products Group, Inc.

APG...Providing tailored solutions for measurement applications

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Rev. B2, 11/08 RPE & RPX Series

Notes

Automation Products Group, Inc.

APG...Providing tailored solutions for measurement applications

Tel: [phone] • Fax: [phone] • www .apgsensors.com • [e-mail]

19

AUTOMATION

APG...Providing tailored solutions

for measurement applications

Automation Products Group, Inc.

T el: 1/888/525-7300
Fax: [phone]

e-mail: [e-mail]

www.apgsensors.com

GROUP, INC.

1/435/753-7300

PRODUCTS

Automation Products Group, Inc.

1025 W. 1700 N.

Logan, UT 84321