Wahl DIGI-STEM DSPG User manual

WD1120 Rev A
November 20, 2023
Palmer Wahl Instruments, Inc.
234 Old Weaverville Road
Asheville, NC 28804
Toll Free: 800-421-2853
Phone: [phone]
Fax: [phone]
www.palmerwahl.com
DIGI-STEM® DSPG
ADVANCED DIGITAL PRESSURE GAUGES
OPTIONAL TRANSMITTER AND SWITCH OPTIONS
USER MANUAL

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WAHL DIGI-STEM® DSPG
ADVANCED DIGITAL PRESSURE GAUGES USER MANUAL
Contents
Digi-Stem®DSPG Advanced Digital Pressure Gauge Warranty................................................................................................3
Safety Instructions ...............................................................................................................................................................3
To avoid possible damage to the instrument or to equipment under test.....................................................................4
Acceptable Operation..........................................................................................................................................................4
Unacceptable Operation......................................................................................................................................................4
Instrument Disposal.............................................................................................................................................................4
Includes................................................................................................................................................................................4
Wahl Digi-Stem®DSPG Advanced Digital Pressure Gauge Specifications ...........................................................................5
RoHS.....................................................................................................................................................................................6
Unpacking & Inspection...........................................................................................................................................................7
Display and Keypad Info ..........................................................................................................................................................7
Status ...................................................................................................................................................................................8
Menu....................................................................................................................................................................................8
Display Readings ..................................................................................................................................................................8
Keypad ...............................................................................................................................................................................13
Analog Wiring Diagram......................................................................................................................................................14
How to Replace the Battery...................................................................................................................................................14
Dimensional Drawings ...........................................................................................................................................................17
Bottom Mount ...................................................................................................................................................................17
All-Angle Mount.................................................................................................................................................................17
Return for Calibration Service................................................................................................................................................18
Thank you for purchasing a Wahl Digi-Stem® DSPG Advanced Digital Pressure Gauge. We appreciate your
business.

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Digi-Stem®DSPG Advanced Digital Pressure Gauge Warranty
Manufacturer warrants all Wahl Digi-Stem® DSPG Advanced Digital Pressure Gauges manufactured by us to be
free from defects in material or workmanship under normal use and service. The Manufacturer agrees to
repair or replace any product listed above which upon examination is revealed to have been defective due to
faulty workmanship or material if returned to our factory, transportation charges prepaid, within the product
specific warranty period of two (2) years from date of purchase. This warranty is in lieu of all other warranties,
expressed or implied and of all obligations or liabilities on its part for damages including but not limited to
normal wear and tear or consequential damages following the use or misuse of this or any instrument sold by
the Manufacturer. In addition, if the product is tampered with in any way or calibrated in any way other than
by the instructions supplied by Palmer Wahl, it will immediately void the warranty. No agent is authorized to
assume, for the manufacturer, any liability except as set forth above. Freight cost to return item(s) for
evaluation, duties and other fees are not covered by the manufacturer.
Product is automatically registered for warranty by serial number at time of purchase. Serial number must
remain attached to product upon return.
Safety Instructions
This document contains important information and should be kept with the instrument at all times during its operational
life. Carefully read all instructions before using the instrument. Other users of this instrument should be given these
instructions with the instrument.
•Do not alter the instrument.
•Use the instrument only as specified, or the protection provided by the instrument can be
compromised.
•Do not use the instrument if it operates incorrectly.
•Do not use the instrument if it is altered or damaged.
•Disable the instrument if it is damaged.
•Avoid any action that can generate an electrostatic charge. Electrostatic discharge is an explosion
hazard.
•Replace the batteries when the battery status indicator appears low to prevent incorrect
measurements.
•Ensure the battery polarity is correct to prevent battery leakage.
•If the unit is equipped with 24V DC power, the pipe to which the gauge is attached must be properly
grounded.
•If the display reads “OL”, the range limit is exceeded and the pressure source must immediately be
reduced.

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To avoid possible damage to the instrument or to equipment under test
•Always apply thread seal tape to the threads of the gauge.
•Do not exceed the maximum allowed torque or 10 Newton Meters (8 foot pounds.)
•Never tighten the gauge threads by holding the body of the gauge. This could damage the gauge threads and
make the gauge inoperable. Use a wrench to tighten the gauge to the process.
•When the access port(s) are not in use, keep the included dust cover protectors attached to prevent damage to
the connectors.
Future updates to this information can be found at http://www.palmerwahl.com and must be added to the original
document. The instrument can only be operated by trained personnel in accordance with these instructions and
local safety regulations.
Acceptable Operation
This instrument is intended only for the measurement of pressure. The instrument is appropriate for continuous use and
operates reliably in demanding conditions as long as the documented technical specifications for all instrument
components are adhered to. Compliance with the operating instructions is necessary to ensure the expected results.
Unacceptable Operation
Replacement Parts and Accessories: Use only original parts and accessories approved by the manufacturer. The use of
other parts can compromise the operation, safety, and functionality of the instrument.
Instrument Disposal
Disposal of old instruments should be handled according to professional and environmental regulations of your area for
electronic waste.
Includes
Wahl Digi-Stem® DSPG Advanced Digital Pressure Gauges comes with:
•1 - DSPG Precision Pressure Gauge Assembly
•1 - Quick Start Guide
•1 - Lithium Thionyl Chloride Battery

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Wahl Digi-Stem®DSPG Advanced Digital Pressure Gauge Specifications

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Wahl Digi-Stem®DSPG Advanced Digital Pressure Gauge Available Ranges
RoHS
The Wahl Digi-Stem® DSPG Advanced Digital Pressure Gauge conforms to RoHS requirements according to EU Directive
(EU) 2015/863- amending Annex II to Directive 2011/65/EU for restriction of Hazardous substances.

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Unpacking & Inspection
If you have any questions about the shipment, please call our Customer Service Department at 1-800-421-2853 or 828-
658-3131. We can also be reached online at www.palmerwahl.com, or by email to [email protected].
Display and Keypad Info

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Status
Battery
24VDC
Transmitter
Data Logger
Switch (Relay)
Menu
Unit
Refresh
Clock
2nd Display
Alarm
Settings
Calibration
Info
Display Readings
Options
Unit
•psi
•Bar / mbar
•Pa / kPa / MPa
•kg/cm2
•inH2O / mmH2O
•inHg / mmHg
•▲▼:
Choose Unit of
Measure
•MENU key:
Select and Exit
Refresh Rate
•1
•2
•3
•5 Second
•▲▼:
Choose Value
•MENU key:
Select and Exit

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Clock –Date
MM-DD-YYYY
Example: 05/17/2023
•▲▼:
Choose Value
•►
Move between MM,
DD, YY
•MENU key:
Select and Exit
Clock –Time
HH-MM-SS
Example: 16/35/20
•▲▼:
Choose Value
•►
Move between HH,
MM, SS
•MENU key:
Select and Exit
[ - - - ]
Signal Processing Period
MAX/MIN/AVG/DIF Period
•24H
•12H
•8H
•4H
•1H
•900
•300 Seconds
•▲▼:
Choose Value
•MENU key:
Select and Exit

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Alarm - Low
Alarm –
Low Point
Off
•▲▼:
Choose Value
•MENU key:
Select and Exit
Alarm –
Low Point
On
Setting
•▲▼:
Choose Value
•►
Move between Digits
•MENU key:
Select and Exit
Visual Alarm –
Low Point
Blue Blacklight

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Alarm - High
Alarm –
High Point
Off
•▲▼:
Choose Value
•MENU key:
Select and Exit
Alarm –
High Point
On
Setting
•▲▼:
Choose Value
•MENU key:
Select and Exit
Visual Alarm –
Low Point
Red Blacklight
Damping Rate (Pressure)
•1
•3
•4
•5
•6
•7
•8
•9
•▲▼:
Select Value
•MENU key:
Save and Exit

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Transmitter Range –Low Limit
outL
•▲▼:
Choose Value
•►
Move between Digits
•MENU key:
Save and Exit
Transmitter Range –High Limit
outH
•▲▼:
Choose Value
•►
Move between Digits
•MENU key:
Save and Exit
Analog Output Type
O typ
•▲▼:
Choose Value
•MENU key:
Save and Exit
•4-20mA
•0-5V
Backlight
•15 Seconds
•30 Seconds
•45 Seconds
•60 Seconds
•▲▼:
Choose Value
•MENU key:
Save and Exit
Calibration
Factory Access Only

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Keypad
Information
•Range
•Firmware Version
Serial Number

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Analog Wiring Diagram
Each wire is labeled individually with its purpose.
How to Replace the Battery
Replace battery only with a C size, Lithium Thionyl Chloride battery, 3.6 V, 8.5 Ah Capacity (Palmer Wahl PN: DSA3062).
DO NOT USE ALKALINE BATTERIES.
When the battery status indicator shows low battery, replace the battery by first removing the 4 screws and lock
washers on the corners of the case with Philips head screwdriver.
24V DC
24V GND
mA (+)
5V
Analog COM
Unused
Relay NO/NC
Relay COM

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Lift the case cover up carefully. When the PC Board is exposed, hold down the board gently while pulling the battery out
of the holder.
Place the new battery in the holder and snap into place.

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When the new battery is connected the board will cycle through red, blue and green lights.
Gently replace the case cover and insert the screws with the lock washers back into place.

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Dimensional Drawings
Bottom Mount
All-Angle Mount

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Return for Calibration Service
To receive a NIST Traceable Certificate of Conformance or repair service on your product, go to palmerwahl.com and
click on: Request an RMA (Return Material Authorization Number) and follow the instructions. You will receive your
RMA number via email once your item is received at our facility. If you prefer, call Customer Service at: 1-800-421-2853
for assistance with the RMA process. Material being returned to us should be packed well, preferably in the original
shipping container.
Our quality management system is certified to conform to ISO 9001:2015. We maintain a calibration system in
conformance with ANSI/NCSL Z-540 and MIL-STD-45662A.
All calibrations are performed against standard instruments, traceable to NIST. Records are stored for a minimum of
three years. Standards used have a test ratio of four times greater than the unit being calibrated. We can perform
certified, traceable calibrations in support of companies that require meeting FAA and FDA quality standards.
Palmer Wahl Instruments, Inc.
234 Old Weaverville Road
Asheville, NC 28804
Phone: [phone] • 828-658-3131
FAX: [phone]
Email: [e-mail]
www.palmerwahl.com