Related Manuals for Digi-Sense 91428-07
Summary of Contents for Digi-Sense 91428-07
- Page 1 Instruction Manual Single-Input RTD Thermometer (Model 91428-07) 68X001350 Rev0 0717 065DGMAN_91428-07 GlobalScientificSupply GLOBAL SCIENTIFIC SUPPLY info@GlobalScientificSupply.com www. .com The Laboratory Supply Company!
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Page 2: Table Of Contents
TABLE OF CONTENTS QUICK-START GUIDE ......1 1. INTRODUCTION ........ 2 2. SAFETY PRECAUTIONS ....3 3. SPECIFICATIONS ......4 4. BATTERY INSTALLATION AND REPLACEMENT ......... 6 5. INSERTING AND REMOVING OPTIONAL RUBBER ARMOR .... 7 6. ASSEMBLING OPTIONAL HANDS- FREE ACCESORIES ...... -
Page 3: Quick-Start Guide
QUICK-START GUIDE To ensure best results please read the complete manual. Connect probe. Press the on/off key. Press again to turn on backlight. Select °C or °F display using °C/°F key. Insert probe in sample. Allow adequate time for reading to stabilize. -
Page 4: Introduction
INTRODUCTION This versatile handheld instrument provides highly accurate temperature measurements and is designed for easy operation, which includes the following features: Operator selection of Celsius or Fahrenheit scale Resolution of 0.1° (auto ranging) Four-digit backlit LCD Hold feature to retain a reading temporarily Field calibration capability Low-battery warning... -
Page 5: Safety Precautions
SAFETY PRECAUTIONS Voltages present at the RTD may also be present at the battery terminals. Always disconnect the RTD when changing batteries. W ARNING This instrument is designed to accept low level signals supplied by standard 100 Ω RTDs. Under no circumstances should the input voltage exceed the specified 10V rms. -
Page 6: Specifications
SPECIFICATIONS Platinum RTD Probes 100 ohm platinum: alpha = 0.003850 –200 to 850°C (–392 to 1562°F) Out-of-range display: “Ur”, “Or”, “OPEN” Range Accuracy –200.0 to –100.0°C ±2.0°C (–392 to –148°F) (±4.0°F) –99.9 to 199.9°C ±0.2°C (±0.4°F) (–148 to 392°F) 200.0 to 850.0°C ±2.0°C (±4.0°F) (392 to 1562°F) - Page 7 Weight Without armor 267 g 362 g With armor Ingress protection Meets IEC-529 IP54 for (with probe dust and water-resistant attached) enclosures EN61326-1/A1: CE compliance 1998 (EU EMC Directive) GlobalScientificSupply GLOBAL SCIENTIFIC SUPPLY - 5 - info@GlobalScientificSupply.com www. .com The Laboratory Supply Company!
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Page 8: Battery Installation And Replacement
BATTERY INSTALLATION AND REPLACEMENT Voltages present at the RTD may also be present at the battery terminals. Always disconnect the RTD when changing batteries. Weak batteries should not be left in the instrument. Dead batteries can leak and cause damage to unit. The typical battery life is about 700 hours. -
Page 9: Inserting And Removing Optional Rubber Armor
INSERTING AND REMOVING OPTIONAL RUBBER ARMOR Figure 1: Removing Optional Rubber Armor 1. To insert thermometer into the optional rubber armor, slide in from the top of meter before pushing the bottom edges of meter down to set it into position. Lift up the stand at the back of meter for bench top applications if necessary. -
Page 10: Assembling Optional Hands-Free Accesories
ASSEMBLING OPTIONAL HANDS-FREE ACCESORIES You can use the optional magnets and strap in the Hands-Free Kit accessories for hands-free operations. Figure 2: Hands-Free Kit GlobalScientificSupply GLOBAL SCIENTIFIC SUPPLY - 8 - info@GlobalScientificSupply.com www. .com The Laboratory Supply Company! -
Page 11: Connecting An Rtd Probe
CONNECTING AN RTD PROBE Use the correct 100 Ω RTD (alpha = 0.003850) for your instrument. Using an incorrect probe type will result in erroneous readings. Insert the 3-pin plug into the mating connector on the top of the instrument. RTD Input Figure 3: Top view of RTD thermometer GlobalScientificSupply... -
Page 12: Key Functions
KEY FUNCTIONS Figure 4: Keypad Toggles between Celsius or Fahrenheit in measurement mode °C/°F and user calibration mode. Press and hold this key for 3 seconds to enter Calibration mode if field calibration is unprotected. Activates/deactivates freezing of the hold measured reading while in measurement mode. -
Page 13: Display Overview
DISPLAY OVERVIEW Figure 5: Meter Display °C/°F Celsius or Fahrenheit indicator. Minimum reading annunciator. Maximum reading annunciator. 700 – 550 hours 3 Bars: 350 – 550 hours 2 Bars: 150 – 350 hours 1 Bar: Blinking: < 150 hours Blinks during calibration mode. Remains in display indicating field calibration is active. -
Page 14: Measurement Mode
10. MEASUREMENT MODE Press the on/off key. The thermometer performs a self-test and all display digits and indicators should remain on for approximately two seconds before the meter enters measurement mode. If a probe is not connected or if the probe is defective, the display will indicate “OPEN”. -
Page 15: Selecting Temperature Scale
11. SELECTING TEMPERATURE SCALE °c 2 4 .6 °C/°F °F 75.4 Figure 8: Press °C/°F key to toggle between °C and °F Select °C or °F by pressing the °C/°F key. Each time the key is pressed, the temperature scale will switch. Switching between °C and °F can be done at any time during operation. -
Page 16: Min And Max Function
12. MIN AND MAX FUNCTION Press the min/max key to toggle between the minimum and maximum readings. The minimum and maximum reading function is ideal for monitoring unattended operations while continually displaying every temperature change that occurs. The minimum and maximum values are sensed and automatically stored. -
Page 17: Calibration
14. CALIBRATION The CAL function allows single point calibration of the thermometer at 0°C (32°F) to compensate for probe offset error. Use the field calibration feature to improve thermometer/probe accuracy. The thermometer comes with a calibration lock function to prevent accidental changes to calibration settings. -
Page 18: Clear Field Calibration
15. CLEAR FIELD CALIBRATION To clear user calibration: 1. Turn the thermometer off. 2. Hold the cal key down while pressing the on/off key. 3. The measurement mode window appears without the CAL indicator to indicate that the user calibration has been successfully cleared. -
Page 19: Field Calibration Lockout
4. When the cal and hold keys are released, the unit will go to measurement mode (Figure 11). S T ABLE °c Figure 11: Unit goes to measurement mode 17. FIELD CALIBRATION LOCKOUT The calibration lockout feature prevents any field calibration changes. The lockout remains in effect until an unlock has been performed. -
Page 20: Maintenance
4. When the cal and °C/°F keys are released, the unit will return to measurement mode (Figure 13). S T ABLE °c Figure 13: Unit returns to measurement mode 18. MAINTENANCE Properly used, the thermometer should maintain calibration indefinitely and not require service other than occasional cleaning of the housing and changing of the batteries. -
Page 21: Troubleshooting
20. TROUBLESHOOTING Problem Cause Solution Power on Batteries not in Insert batteries. but no place or wrong or re-insert display polarity. batteries in correct polarity. “OPEN” Probe not Make sure display connected probe is firmly on LCD connected. “Ur” or Measurement Ensure “Or”... -
Page 22: Service
Note: Serial number label is located behind the meter. 22. REPLACEMENT METER & ACCESSORIES Catalog Item number Single-input RTD thermometer 91428-07 Rubber armor with stand 35427-80 Hands-free kit (two magnets 35427-85 and a strap) General-purpose probe, 10 in. long x 0.188 in. dia, 08117-70 10-second time constant. -
Page 23: Warranty
23. WARRANTY The Manufacturer warrants this product to be free from significant deviations from published specifications for a period of three years. If repair or adjustment is necessary within the warranty period, the problem will be corrected at no charge if it is not due to misuse or abuse on your part as determined by the Manufacturer. -
Page 24: Innocal Calibration And Repair Services
® 25. INNOCAL CALIBRATION AND REPAIR SERVICES Optimum performance of your temperature- measuring instrument is not a timeless condition. To ensure quality measurements, have your instrument calibrated regularly. Trust InnoCal to satisfy your calibration and equipment repair needs. With over a decade of service, we've helped thousands of customers meet ISO, FDA, EPA, GLPs/cGMPs and other quality standards. - Page 25 Convenient Reminders It’s so easy to keep your instruments functioning properly. Based on your requirements, InnoCal will send you a reminder when it’s time to re-certify or service your instrument. We provide you with the documentation you need to meet your most stringent quality requirements for the control of inspection, measuring, and test equipment.
- Page 26 Are your calibration certificates good enough? InnoCal surpasses the competition by providing the most complete certificates as required by NIST. All of our certificates include measured data and point-by-point measurement uncertainty, and by request, we will provide test accuracy and test uncertainty ratios at no extra cost.