Traceable Calibrated Thermohygrometer with RS-232 Instruction Manual

1. Introduction

This manual provides detailed instructions for the proper use and maintenance of your Traceable Calibrated Thermohygrometer with RS-232. This device is designed for accurate measurement of temperature and humidity, featuring microprocessor-based technology for easy calibration and an RS-232 output for data communication. For optimal performance and longevity, please read these instructions thoroughly before operation.

Image 1: The Traceable Calibrated Thermohygrometer. The device features a digital display showing humidity and temperature, with several control buttons below. A probe is connected via a coiled cable.

2. Features

• Accurately measures temperature and relative humidity.
• Includes a NIST-Traceable certificate from an A2LA accredited calibration laboratory (1750.01), ensuring measurement accuracy.
• Microprocessor-based design facilitates quick and straightforward calibration procedures.
• Equipped with RS-232 output for data transmission to compatible systems.

3. What's in the Box

Upon unpacking, verify that the following items are present:

• Traceable Calibrated Thermohygrometer unit
• Humidity/Temperature Probe
• NIST-Traceable Calibration Certificate
• Instruction Manual

4. Setup

1. Battery Installation: Open the battery compartment (typically on the back of the unit) and insert the required batteries, observing correct polarity.
2. Probe Connection: Connect the humidity/temperature probe to the designated port on the main unit. Ensure a secure connection.
3. Initial Power On: Press the ON button to power on the device. The display should illuminate and show initial readings.
4. Unit Selection (if applicable): If your model allows, select your preferred temperature unit (Celsius or Fahrenheit) using the °C/°F button.
5. Placement: Position the thermohygrometer in the environment where measurements are required. Ensure the probe is exposed to the air and not obstructed.

5. Operating Instructions

5.1 Basic Operation

• Power ON/OFF: Press the ON button to turn the unit on. Press the OFF button to turn it off.
• Reading Display: The display will show current relative humidity (RH%) and temperature (°C/°F).
• Temperature Unit: Toggle between Celsius (°C) and Fahrenheit (°F) by pressing the °C/°F button.
• Data Hold: Press the HOLD button to freeze the current readings on the display. Press again to release.
• Minimum/Maximum Readings: Press the MIN/MAX button to view the minimum and maximum temperature and humidity readings recorded since the last reset. Press repeatedly to cycle through MIN, MAX, and current readings.
• Reset MIN/MAX: While viewing MIN/MAX readings, press the RESET button to clear the stored minimum and maximum values.

5.2 RS-232 Output

The device is equipped with an RS-232 port for connecting to a computer or data logger. This allows for real-time data acquisition and analysis. Refer to the specific software or interface instructions for your data collection system for details on establishing communication and data transfer protocols.

Image 2: A hand in a blue glove interacting with a Traceable device, demonstrating typical laboratory use. This image illustrates the practical application of Traceable instruments in a controlled environment.

6. Maintenance

• Cleaning: Wipe the unit and probe with a soft, damp cloth. Do not use abrasive cleaners or solvents.
• Battery Replacement: Replace batteries when the low battery indicator appears on the display. Ensure proper battery type and polarity.
• Storage: When not in use for extended periods, remove the batteries and store the device in a cool, dry place away from direct sunlight and extreme temperatures.
• Recalibration: Due to the nature of humidity sensors, periodic recalibration is recommended to maintain accuracy. Refer to the NIST-Traceable certificate for recommended recalibration intervals.

7. Troubleshooting

8. Specifications

9. Warranty and Support

For warranty information and technical support, please contact the manufacturer, Cole-Parmer, or your authorized distributor. Keep your purchase receipt and NIST-Traceable certificate for reference.

Manufacturer: COLE-PARMER

Brand: TRACEABLE

For further assistance, visit the Traceable Brand Store on Amazon.