1. Manuals
  2. Brands
  3. CSE Manuals
  4. Measuring Instruments
  5. 202LD
  6. User manual

CSE 202LD User Manual

Methanometer
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
202LD Methanometer
User Manual
UM-202LD-1-A
ECO 1783

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 202LD and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for CSE 202LD

Summary of Contents for CSE 202LD

  • Page 1 202LD Methanometer User Manual UM-202LD-1-A ECO 1783...

  • Page 2: Table Of Contents

    Contents Summary Safety Guidelines How It Works 202LD at a Glance Operation in the Field Taking a Methane Reading Overrange and Malfunction Indicators Operation on the Bench Charging Test Gas Specifications Bump Test Calibration Maintenance Specifications Regulatory Accessories...

  • Page 3: Summary

    Summary Knowledge That Could Save Your Life Your 202LD methane detector can only alert you of the dangers of methane if you understand how it works. Therefore, take this manual seriously and read it completely. It has been specifically written to help keep you and those around you safe.

  • Page 4: Safety Guidelines

    Indicates a hazardous situation that, if not avoided, could result in minor or moderate injury. Do not put the 202LD in a device or orient it in any way that can obstruct gas flow to the sensor. The 202LD is a gas monitor that is intended to alert the user of potentially dangerous environmental conditions.
  • Page 5 If the outer case of the 202LD is cracked or broken, or if the case seal or any gaskets are missing or damaged, discontinue use of the 202LD. Dust, debris, or water that enters the 202LD may negatively impact instrument performance.
  • Page 6 If a bump test or calibration fails, clean the sensor screen and perform a calibration of the unit. Do not use the 202LD if the 202LD fails the bump test or will not calibrate according to the procedures in this manual.

  • Page 7: How It Works

    How It Works Gas concentrations may vary based on location and activity. Always use caution even if the 202LD does not indicate dangerous concentrations. Higher concentrations may be present nearby. Dangerous gas levels can escalate without warning. Most hazardous gases are odorless, and their presence cannot be detected by human senses.
  • Page 8 The CSE 202LD is specifically designed to detect and warn users of the dangers of methane. Its large display provides a clear and accurate methane reading that can be viewed at a distance (when used with a CSE extension probe).

  • Page 9: 202Ld At A Glance

    Detection Your 202LD detects methane levels and displays the value of gas on the large LED display. The number is a Percent By Volume of the methane present around the 202LD. In addition, an indicator provides the user a signal when the detector is in an atmosphere greater than 10% methane by Volume, flashing the OVERRANGE LED.
  • Page 10 Carrying the 202LD A carrying case is available for purchase to carry your 202LD safely in the field. Other common accessories are the Extension Probes and Cradles designed to get the 202LD in areas you yourself otherwise couldn’t. (See page 26 for more about accessories.)

  • Page 11: Operation In The Field

    Taking a Methane Reading When you need to the check an area for the presence of methane your 202LD is just a press of the button away. (Be sure a Bump Test or Calibration have been performed before using your 202LD.)

  • Page 12: Overrange And Malfunction Indicators

    202LD display is now reading percent by volume values which need to have a leading “1” added to the tens place. (i.e. If the 202LD display reads 0.7, the percent by volume is actually 10.7% by volume.)

  • Page 13: Operation On The Bench

    A Power Outlet (120 VAC 60 Hz) Charging the Unit The charging port on the 202LD detector is keyed to have the larger prong towards the back of the 202LD. To connect the 202LD to the charger, line up the charger’s fork connector with the charging port of the 202LD.

  • Page 14: Test Gas Specifications

    Test Gas Specifications You will need the following test gases to accurately bump test and calibrate the 202LD. Use only cylinders containing these exact concentrations. Your CSE representative can supply CSE- certified cylinders for maximum safety and reliability. • Zero Air 20.9% O2, balance nitrogen...
  • Page 15 So it’s essential to be sure your methane detector is in good condition before it is needed. That’s why every 202LD should be bump tested daily or before each shift. A bump test can uncover problems such as: •...
  • Page 16 TIP: Consider using Zero Air if you are not confident that the air in the testing location is free of contaminants. NOTE: Be sure to use the CSE regulator that is designed for a flow rate of 0.5 L/min. It gives you a flow rate of 0.5 L/min no matter how wide you open it.
  • Page 17 14.) NOTE: Be sure to use the CSE regulator that is designed for a flow rate of 0.5 L/min. It gives you a flow rate of 0.5 L/min no matter how wide you open it.

  • Page 18: Calibration

    5. After the span gas has been applied for at least 1 minute, check the 202LD display. To pass the span test, the gas concentration reading after 1 minute, must be between 2.4% and 2.6%. • If the reading is outside this limit, the 202LD has failed the bump test and will need to be set aside for calibration.
  • Page 19 Calibration Overview As it comes from the manufacturer, your 202LD is calibrated so that the reading on its display gives you an accurate report on the gas around it. That means, for instance, that if the air contains 2.5% methane, you will see “2.5%” on the display. When a bump test shows that it’s no longer giving a true reading, it’s time to calibrate it again.
  • Page 20 TIP: Consider using Zero Air if you are not confident that the air in the testing location is free of contaminants. NOTE: Be sure to use the CSE regulator that is designed for a flow rate of 0.5 L/min. It gives you a flow rate of 0.5 L/min no matter how wide you open it.
  • Page 21 202LD and remove the top case. These screws are retained, so you will only need to back the screws out a few turns. 2. Snap the calibration cap onto the sensor portion of the 202LD, (skip Step 3 if using clean, ambient air.) 3.
  • Page 22 14.) NOTE: Be sure to use the CSE regulator that is designed for a flow rate of 0.5 L/min. It gives you a flow rate of 0.5 L/min no matter how wide you open it.
  • Page 23 6. Using a CSE adjustment tool, turn the “SPAN” pot located within the LED display until a 2.5% reading is obtained. Turn the “SPAN” pot clockwise until 2.4% just appears on the display. Now rotate the “SPAN” pot counterclockwise until 2.5% appears on the screen.

  • Page 24: Maintenance

    Never use a sharp tool for cleaning; you may damage the seal between the top and bottom case. Inspecting for Damage When you pick up your 202LD at the beginning of your shift, look it over on all sides for signs of wear and tear. •...

  • Page 25: Specifications

    Case Material: Polycarbonate Buttons: Test, Battery Check Display: 1.8” Tall LED Display Battery: CSE 51023000101 Performance Specifications Battery Life: Capable of completing required spot checks for a 10-Hour shift Battery Charge Time: Up to 12 hours Sensor Life: 24 months minimum Calibration Gas Concentrations: Zero Air: 20.9% O2, Methane:2.5% CH4...

  • Page 26: Regulatory

    One of the most popular ways which the 202LD is used out in the field is when it is held in a cradle and placed on the end of an Extension Probe. This allows workers to take the necessary methane spot-checks at a safe distance.
  • Page 27 Notes...
  • Page 28 You Always Have Backup If you need support or more information, just ask the CSE team. Call 800-245-2224 or 412-856-9200, or contact us at customerservice@csecorporation.com. CSE CORPORATION | 1001 Corporate Lane | Export, PA 15632 Office: 412-856-9200 | Fax: 412-856-9203 | www.csecorporation.com...

Table of Contents