Teledyne 2240 – Portable Handheld Hydrogen Leak Detector, 2nd generation - Manual (Page 5)

Page 9 of 26 M2240 R0
2. 2240 Functions and Features
General Features
The
2240 is designed as three section unit housed in a
tough ABS carrying case with all the necessary
accessories. The principle sections are:
• Controller – Containing the user interface, battery, and
external electrical interfaces. (Serial and analog).
• Wand Assembly – extends the operator’s reach by 24
inches, making operation highly flexible.
• Sensor Module – Containing the sensor element and
sensor-specific electronics. Easily mounted on either the
Controller or Wand Assembly.
Electrical Features
• Power provided by either the internal battery or through an
optional Teledyne external power supply.
• Automatic self-test, activated on start-up, to confirm
proper operation.
• Serial Interface: 9 pin Sub-D connector in RS-232
configuration transmitting ASCII data in an 8 bit stream
with no parity and 1 stop bit.
• Analog Interface: 0-5 V and 4-20 mA. (Reference Figure
3). The analog output produces a signal proportional to the
amount of hydrogen in air, an indication of Warm-Up
Mode, or an indication of Error Mode as determined by the
operator-selected format. (See section 5)
Operator Interface Features
• LCD: provides readable (alphanumeric) information on
current readings and settings..
• Tri-colored (green/yellow/red) LED: indicates instrument
status and changes in hydrogen concentration.
• Audible alarm: Operator programmable level provides a
single beep each time a new peak hydrogen concentration
is detected and provides a continuous series of beeps if the
programmable Alarm setting is exceeded.
Page 10 of 26 M2240 R0
3. Component Identification
Connector
Handle
Sensor Module
containing the Wide
Range Sensor®
LED Display
Mode
Button
LCD Display
Enter Button
Power Button
Scroll
Buttons
LED Display
Controller
Receiver
Sensor
Module,
shown
attached after
removing
from the
Controller
Battery Door
Release Tab
Sensor
Release Tab
Battery Door
Wand
Assembly
Coiled Cable
Figure 2 - 2240 Controller and Wand Assy.