SINGLE GAS DETECTOR (PROFESSIONAL SERIES)

INTRODUCTION

The user has purchased the SINGLE GAS DETECTOR by FORENSICS DETECTORS™. The detector features a temperature indicator, time, alarm functionality, adjustable alarms, and is calibration friendly for industrial, business, home, or R&D applications.

OPERATION

• ON/OFF: Press POWER button for 5 seconds. After self-check, normal operation begins and the gas level is shown.
• MENU MODE: Quickly press POWER button to enter the main MENU SELECTION. Use UP and DOWN buttons to make your selection, then press POWER button to select.

MENU OPTIONS

• Gas Zero: Expose to ZERO air for 2 minutes using certified gas or fresh air (only for O2 Detectors, expose to pure N2). Maintain a flow of about 0.5L/min when using gas bottles and use the sensor cap provided to deliver the gas to the detector. Then press Save to register the Zero reading.
• Gas Calib: Enter passcode 8888. Enter CAL gas concentration – usually mid-point of detection range or lowest alarm level. Expose to CAL air for 2 minutes using certified gas. For O2 detectors, simply expose the detector to fresh air that has 20.9% of O2. Maintain a flow of about 0.5L/min when using gas bottles and use the sensor cap provided to deliver the gas to the detector.
• Set Time: Follow screen instructions. Move cursor and adjust time digits as desired.
• Record: Time-stamped history of alarm activation.
• LA Set: Low Alarm point setting. Follow screen instructions. Move cursor and adjust alarm levels.
• HA Set: High Alarm point setting. Follow screen instructions. Move cursor and adjust alarm levels.
• Unit Set: Allows user to select between ppm or mg/m³. Note: For O2, unit is measured in %vol.
• ESC: Exit menu options and back to normal operation.

BATTERY CHARGING

The product has a built-in lithium battery and is charged via micro-USB. Charging is completed when the battery indicator on the screen is full. The detector can be operated whilst charging by plugging in the charging cable while the detector is ON. DO NOT charge in dangerous test locations to avoid fire or explosions.

SPECIFICATIONS

• Sensor: Electrochemical Sensor
• Sensor Life: 2-3 years (comes with calibration certificate)
• Detection Range: see Table 1
• Error: <±5% F.S. of detection range (see Table 1)
• Recovery/ Response Time: < 30 seconds
• Storage / Operating Temperature: 14°F - 122°F
• Storage/Operating Humidity: <95%RH
• Battery: DC3.7V Li-ion battery 1500mAh
• Dimension/Weight: 4.3x2.3x1.7 inches & 5.4oz
• Rating: ATEX certified Ex ib IIB T3 Gb. IP65 certified.
• Charging Time: 3 hours, Operating Time: >24 hours

Table 1: Professional Series Model FD-90A gas detectors offered by FORENSICS DETECTORS™

GAS SAMPLING PUMP

Not required but recommended for continuous monitoring or gas sampling in isolated areas (hard to get to areas) such as sewers, tanks, shafts, etc. Sold Separately. Amazon.com product ASIN: B0859JDCNB

Features:

• Large & Clear Display: Temperature, Concentration, & Battery Display with Backlight
• Antip-slip Grip
• Buzzer Alarm
• Hi Capacity Li-Ion Battery 3.7V
• RED LED & Vibration Alarms
• Micro-USB Charging
• ON/OFF & Rubber Menu Buttons
• Stainless Steel Probe, screw-on air-intake
• Power & Menu Buttons, Pump ON/OFF
• USB recharge port for Li-ion Battery
• Rugged ABS construction
• air-output port

What is CALIBRATION?

Your detector comes already calibrated and ready to use. However, calibration is an important function to be performed to ensure your gas detector operates accurately (EVERY 6 MONTHS). Accuracy and calibration drift can happen over time due to chemical degradation of sensors and natural drift in electronic components. There are two parts to the calibration: ZERO Calibration and SPAN Calibration.

• ZERO CALIBRATION: Ensures a good baseline to ZERO target gas exposure. This ensures the detector reads a true ZERO. For example, for CO detectors, this is performed in fresh air, with NO carbon monoxide present.
• SPAN CALIBRATION: Ensures accurate gas concentration reading (i.e., ensure that the display reading in ppm is accurate and true). For example, an OSHA safety officer using a CO detector used in the field would want to calibrate to a concentration of 50ppm, since ambient CO is usually in the lower range. The span calibration gas concentration chosen should best represent the concentration that the sensor typically is exposed to, as to ensure maximum accuracy for daily application usage.

What is Bump Testing?

Bump testing is to expose the gas detector to a small amount "blast" of target gas to ensure the detector operates and alarms as programmed. The function of this test is to verify detection operation and build user confidence, particularly in hazardous and critical user applications. Recommended to bump test when first purchased and unpacking detector and weekly thereafter.

ROBUST WORK DESIGN

The professional series detector is a robustly designed unit. It arrives with a sling, calibration cap, and cable charger with an attached metal belt clip. The detector conforms to a variety of qualifications: CE ATEX certified Ex ib IIB T3 Gb, IP65 certified.

Product Tested, Calibrated, QA/QC in California, USA

Product Packaged in California, USA

Product Made in China