PM930SD USER’S MANUAL LIQUID OR AIR PRESSURE METER WITH DATALOGGING SD CARD Please read this manual carefully and thoroughly before using this product.
TABLE OF CONTENTS Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Operating Instructions . . . . . . . . . . . . . . . . . . . . . . 4 – 9 What’s in the case . . . . . . . . . . . . . . . . . . . . 4 – 5 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 7 Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . 7 Holding and Storing Measurements. . . . . . . . . .
INTRODUCTION Thank you for purchasing General Tools & Instruments’ PM930SD Liquid or Air Pressure Meter with Datalogging SD Card. Please read this user’s manual carefully and thoroughly before using the instrument. The PM930SD is a general purpose handheld instrument suitable for measuring pneumatic and hydraulic pressures in automotive, mechanical engineering, HVAC/R (heating, ventilation, air-conditioning, and refrigeration) and food-processing environments.
OPERATING INSTRUCTIONS WHAT’S IN THE CASE The PM930SD comes fully assembled in a carrying case along a 2 GB SD memory card with this user’s manual. Optional accessories available from General Tools & Instruments include eight optional pressure sensors, each with a different full-scale range (2, 5, 10, 20, 50, 100, 200 and 400 bar) and a 9VDC adapter for a 110V power supply. See the Optional Accessories section of this manual for more details.
1-1 Liquid-crystal display 1-2 POWER button 1-3 HOLD/ESC button 1-4 REC/ENTER button 1-5 ▲ button 1-6 ▼ button 1-7 TIME button 1-8 LOGGER SET button 1-9 Kickstand 1-10 Battery compartment cover 1-11 Battery compartment cover screws 1-12 Tripod attachment nut 1-13 Pressure sensor socket 1-14 Socket for 9VDC AC adapter 1-15 Reset button 1-16 RS232 output jack 1-17 SD card socket 1-18 Pressure sensor port 1-19 Pressure sensor 1-20 Pressure sensor connector SETUP 1. Choose the power source.
Pressing the REC/ENTER button causes the word “no” or “yES” to appear over the term “Sd-F”. Press the SET ▼ button to make a selection. Choose “yES” whenever a new SD card is being used, or when a used card is being repurposed (from use with another SD card instrument or a camera, for example) and all data on it is to be erased. Choose “no” to preserve any data on a card previously used with this instrument.
. Choose the full-scale range of the optional pressure sensor. Once the format of decimal divisions has been set and stored, the term “tyPE” will appear in the lower part of the display. Above it will appear the default value “2”, for a 2-bar sensor. Press the ▼ or ▲ button until the value displayed matches the full-scale range, in bar, of your optional sensor. General Tools & Instruments offers pressure sensors with full-scale ranges from 2 bar to 400 bar. Press the REC/ENTER button to store the setting.
HOLDING AND STORING MEASUREMENTS 1. To hold a measured value of pressure, press the HOLD/ESC button during the measurement. Doing so will cause the word “HOLD” to appear at the top of the display. Pressing the HOLD/ESC button again releases the hold. 2. To record and recall readings, press the REC/ENTER button while making measurements. This will make the term “REC” appear at the top of the display.
5. To change the storage location of manually logged data, press the ▼ button once; this causes the “P” to disappear from the left side of the display and the value on its line to begin flashing. Once the flashing begins, you can use the ▼ and ▲ buttons to change the flashing value to any number between 1 and 99. Once you have chosen the storage location, press the REC/ENTER button to save the setting. This causes the value to stop flashing and the “P” to return. 6.
SPECIFICATIONS Embedded microcontroller Custom one-chip LSI device Display type Liquid-crystal with green backlight Display size 2.05 x 1.5 in. (52 x 38mm) Displayed pressure unit bar, psi, inches Hg, inches H2O, hPA, kPA, kg/cm2, mm Hg, meters H2O, atmospheres Measurement accuracy ± 0.
OPTIONAL ACCESSORIES • Pressure sensors with the following full-scale ranges: 2, 5, 10, 20, 50, 100, 200 and 400 bar • 9-VDC adapter for 110VAC power supply WARRANTY INFORMATION General Tools & Instruments’ (General’s) PM930SD Liquid or Air Pressure Meter with Datalogging SD Card is warranted to the original purchaser to be free from defects in material and workmanship.
GENERAL TOOLS & INSTRUMENTS 80 White Street New York, NY 10013-3567 PHONE (212) 431-6100 FAX (212) 431-6499 TOLL FREE (800) 697-8665 e-mail: sales@generaltools.com www.generaltools.com PM930SD User’s Manual Specifications subject to change without notice ©2010 GENERAL TOOLS & INSTRUMENTS NOTICE - WE ARE NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS.
