Cooper Instruments & Systems DPG 100 Digital Pressure Test Gage - Manual (Page 4)

CHAPTER 1 GETTING STARTED
IMPORTANT! IT IS RECOMMENDED THAT YOU READ THIS DOCUMENT THOROUGHLY BEFORE
APPLYING POWER TO THIS UNIT. THIS DOCUMENT CONTAINS INFORMATION ON WIRING,
CALIBRATION, AND USE OF FEATURES.
1.1 Quick Start Guide
1. The instrument comes calibrated from the factory and needs no further calibration.
2. For battery powered instruments, install one or two alkaline batteries by removing the rear center screw
and then the front faceplate. See "Battery" in Section 3.3.
• If using an AC adapter, connect the adapter into the back of the instrument.
• If using a Vehicle powered or Loop powered instrument, use the wiring diagrams in Chapter 6.
3. Screw the instrument into place noting the correct threads. See "Installation" in Chapter 3.
• Up to and including 300 PSI = 1/4 18 NPT [Pipe thread] (3/4" Hex)
• Above 500 PSI = 9/16- 18 UNF [Straight thread] (7/8" Hex)
4. Push the [On/Off] button.
5. You are now ready to monitor pressure.
1.2 About This Manual
This is the User's Guide for standard Digital Pressure Gages. Other instruments may be made available with
additional features, pressure ports and other options. As the product is continually improved, the information herein
is subject to change without notice.
CHAPTER 2 INTRODUCTION
2.1 Overview
The Digital Pressure Test Gage combines the latest in pressure transducer technology with modern microprocessor
electronics to provide a high-accuracy digital readout of process pressure. Stainless-steel construction, high over-
pressure protection and a solid-state design give these instruments a long lifetime with fewer recalibrations.
An easy-to-read digital display provides four ½” digits. The waterproof membrane face uses raised buttons with
tactile feedback for ease of setup and operation. Zero adjustment, zero offset/tare, high, low and clear functions are
standard on each instrument. Calibration and setup information is stored in non-volatile memory to protect from loss
even when power is interrupted. Unauthorized calibrations are also blocked with internal security. Field-selectable
units of measure allow one instrument to be re-configured for a variety of tasks.
2.2 Instrument Layout
2.2.1 LCD Display
The four ½” digit liquid crystal display (LCD) readout displays the pressure applied to the instrument, interacts with
the user when the instrument is being set up or calibrated, and indicates if there is a problem with the instrument.
When the instrument is turned on, it illuminates all LCD segments. Then the engineering units the gauge will be
using appear on the display. Most instruments are calibrated in PSI and the instrument has conversion factors for
many standard engineering units built in. However, if the instrument displays SPCL (special), it has been specially
calibrated to another engineering unit at the factory. In that case, the serial number tag on the top of the instrument
will indicate the engineering units being used and the capability to select other engineering units is not available.
After the display of the engineering units, the pressure applied to the pressure port is shown on the display. If the
pressure applied to the pressure port is above the instrument's ability to measure, the display will indicate this over
range condition by showing a "1" on the far left hand side of the display. The display will read "-1" if the instrument
is under ranged.
DPG 100 1 Rev Feb 2001