APG PG-5000 User Manual

PRODUCTS

AUT OMATION

Operator’s Manual

GROUP, INC.

PG-5000

Automation Products Group, Inc.

APG...Providing tailored solutions for measurement applications

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

PG-5000 Rev. B4, 11/08

T able of Content s

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

Instructions ..................................................................................... 4

Zero Trimming ............................................................................. 4

Use of Auto-Tare Feature ............................................................ 4

Battery Replacement .................................................................... 4

Re-Calibration ............................................................................. 5

Use Of Peak-Hold Feature (Optional)......................................... 5

Analog Output Option (0 To 2 VDC)........................................... 5

4-20 mA Transmitter Option........................................................ 6

External Power (24 VDC) and

0 to 5 VDC Analog Output Option .............................................. 7

External Power Without Other Options ...................................... 7

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Automation Products Group, Inc.

Rev. B4,11/08 PG-5000

• 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 18 months from date of shipment from factory .

THE FOREGOING WARRANTY IS IN LIEU OF AND EXCLUDES ALL OTHER
W ARRANTIES NOT EXPRESSL Y SET FOR TH 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 PAR 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

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

3

PG-5000 Rev. B4, 11/08

• Instructions

All units are factory calibrated prior to shipment.

NOTE: Due to the temperature sensitivity of the strain gages within the
sensor, sudden temperature changes, such as holding an unmounted gauge by
the sensor, will cause the readings on the display to fluctuate. Please install
the gauge in your system before determining stability.

1. Zero Trimming

NOTE: Some units are equipped with zero “knob”.

If it becomes necessary to re-adjust the “Zero” on the display, this can be
accomplished by turning the trimpot marked “Z” just to the left of the On/Off
push button. On the PG-5000 there is either a zero adjustment knob or a black
nylon cover screw. If the gauge has a cover screw, it is necessary to remove the
cover screw to access the zero adjustment pot. An ideal zero is indicated by a
reading of 000 with an intermittently flashing “-” sign.

NOTE: A jewelers screwdriver or an eyeglass repair screwdriver (supplied)
is a suitable instrument. Do not make changes to the Span adjustment (the “S”
pot to the right of the push button) as part of the zero trimming. The Span
should only be changed as part of the re-calibration of a gauge with a known
pressure source.

2. Use of Auto-Tare Feature

When the PG-5000 is first turned on you will notice that the display flashes
for the first 4 seconds. If the On/Off button is pushed and held during this
period, any existing reading will be re-set to zero. This allows the user to “Tare­Out” a starting weight in hydraulic weighing applications. T o remove the Tare
feature turn the unit off and back on again and do not push the On/Off button
during the flashing period.

3. Battery Replacement (9 Volt Type)

The battery can be replaced simply by removing the single screw at the top of
the battery door. Remove the old battery, unplug the cable connector and
replace with Eveready type 216 or equivalent. Replace the battery door and
secure with the self-tapping screw. (Do not overtighten)

NOTE: For best accuracy, re-calibration per step 4 should be performed at
the time batteries are replaced.

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Rev. B4,11/08 PG-5000

4. Re-Calibration

This procedure requires a known pressure source of at least ±0.1% accuracy
in order to fully utilize the accuracy potential of the PG-5000 (If not available, the
gauge can be returned to APG for re-calibration.)

Procedure:

A. Ensure the Gauge is at 0 psig (or vacuum if absolute), and adjust the zero

as per instructions in step 1.

B. Apply full scale pressure to the pressure port and adjust the span (“S”)

pot until the display reads the correct pressure.
C. Re-check the zero and re-adjust the zero (“Z”) pot if required.
D . Repeat steps B and C, until no further adjustment is required.

5. Use Of Peak-Hold Feature (Optional)

After initially turning the gauge on (wait until the display stops flashing), a

second push of the On/Off button energizes the peak-hold feature and causes
an arrow to appear in the display. In this mode, only the highest reading sensed
will be shown (until a higher reading comes along). This “peak” reading will be
retained until the unit is reset by turning it off with a third push of the button.
The sequence can then be re-initiated; one push for on in normal mode, two
pushes for “peak-hold” mode and a third push for Off/Re-set.

6. Analog Output Option (0 To 2 VDC)

The 0–2 VDC analog output is accessed through a miniature “Phone Jack”

(mate supplied) on the back of the unit (see External Power and 0-2 VDC Output
Plug drawing on the last page). The “Tip” connection is “+ Output” and the
center connection is “- Output”. DO NOT CONNECT TO THE CASE
CONNECTION. This should only be used as a cable restraint. To minimize the
effect on the battery life, the output should not be loaded with less than 100,000
ohms.

0 to 2 VDC Table

0-2 VDC Output

Tip + Output

Center – Output

Body No connection

Automation Products Group, Inc.

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PG-5000 Rev. B4, 11/08

7. 4-20 mA T ransmitter Option

When equipped with this option the gauge no longer operates from batteries

but instead is “Loop Powered”. The loop connection is made to a 6 pin
receptacle located at the rear of the unit (a mating plug is supplied). A voltage of
between 9 and 32 VDC must be maintained at this connection (Pin A is “+” and
Pin B is “-” see sketch) to insure proper operation. Completion of the earth or
system ground (Pin F) is recommended for proper circuit protection.

Power supply voltage must be sufficient to maintain a minimum of 9 VDC at

the gauge terminals after “dropping” voltage across RL at full scale current
(20 mA). Example: If RL = 250 ohm then “drop” is 0.02 Amps X 250 ohm = 5
volts. Therefore power supply minimum is 5 V + 9 V = 14 V.

RE-CALIBRATION: The procedure is the same as in step 4, except that there

are 2 sets of zero and span adjustments. The front panel controls affect the
display and the rear controls (remove “battery” door) affect the 4/20 mA signal.

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Automation Products Group, Inc.

Rev. B4,11/08 PG-5000

B

6

8. External Power (24 VDC) and 0 to 5 VDC Analog Output Option

When equipped with this option the gauge no longer operates from batteries

but instead is “externally powered”. Both the 24* VDC input power and the 0 to
5 VDC Analog Output are connected to the 6 pin circular connector on the rear
of the unit. Pin connections are as follows:

*Actual range of input voltage is 12 to 31 VDC.

24 VDC External Power and 0-5 V Analog Output

PIN -A- PLUS (+) 24 VDC POWER IN
PIN -B- PLUS (+) ANALOG OUTPUT
PIN -C- MINUS (-) ANALOG OUTPUT
PIN -D- MINUS (-) 24 VDC POWER IN
PIN -E- NO CONNECTION

Pin Connector

F

E

D

A

C

PIN -F- CASE GROUND

9. External Power Without Other Options

The external power input is accessed through a miniature “Phone Jack” (mate

supplied) on the back of the unit. The “Tip” connection is “+ Power” and the
center connection is “- Power”. DO NOT CONNECT TO THE CASE
CONNECTION. This should only be used as a cable restraint.

It is important that you never remove or insert the "Phone Jack" connector

into the gauge with the power turned on. This can damage the gauge and cause
it to fail. Only turn the power on after the "Phone Jack" has been inserted into

the external power connector .

External Power and 0-2 VDC Output Plug

Automation Products Group, Inc.

APG...Providing tailored solutions for measurement applications

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

7

AUT OMATION

APG ...Providing tailored solutions

for measurement applications

Automation Products Group, Inc.

Tel: [phone]
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

To order additional copies of this manual, ask for APG part number PN9000043 Rev. B4, 11/08