ENVIRONMENTAL SENSOR TECHNOLOGY CO.INC. EST-1000, EST-2000 User Manual
EST-1000
EST-1000
EST-1000
EST-1000
Handheld
Handheld
Handheld
Handheld Intelligent
Intelligent
Intelligent
Intelligent Toxic
Toxic
Toxic
Toxic Gas
Gas
Gas
Gas Detector
Detector
Detector
Detector
User
User
User
User Manual
Manual
Manual
Manual
（
Please read this manual carefully before using
）
ENVIRONMENTAL
ENVIRONMENTAL
ENVIRONMENTAL
ENVIRONMENTAL SENSOR
SENSOR
SENSOR
SENSOR TECHNOLOGY
TECHNOLOGY
TECHNOLOGY
TECHNOLOGY CO
CO
CO
CO .
.
.
. INC.
INC.
INC.
INC.
Contents
Contents
Contents
Contents
I. Product Overview ................................................................................... 1
II. Product Description ................................................................................ 1
III. Performance Parameters ....................................................................... 3
IV.
Notes ................................................................................................... 4
V.
Operational Processes ............................................................................. 4
VI. Menu Description ................................................................................ 6
VII. Calibration Method .............................................................................. 9
VIII. Troubleshooting ................................................................................. 10
IX. Instrument Supporting ........................................................................ 11
Appendix Type & Specification of the Sensor ............................................. 11
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ENVIRONMENTAL SENSOR TECHNOLOGY CO. INC.
I.
I.
I.
I. Product
Product
Product
Product Overview
Overview
Overview
Overview
EST -1 000 series handheld intelligent toxic gas detector is an intelligent hand-held alarm that
detects the concentration of toxic gas in the target gas with high precision and low power
consumption by an advanced electrochemical technology.
EST- 1 000 series adopt a natural gas diffusion testing method (external handheld pump for
option ). The sensor is the advanced electrochemical toxic gas ones, which are of high
sensitivity and excellent repeatability. It is equipped with a LCD liquid crystal display, which
can observe the concentration of the target gas online, check the time, date and week, It has
two levels of alarm output. When it exceeds the pre-set alarm point, the sound and light alarm
signal will be started immediately. It has two kinds of calibration methods, i.e. the software
and hardware. The calibration can be finished without opening the cover.
This instrument has the following features:
1. Advanced electrochemical sensor makes the performance stable and reliable.
2. External power supply of DC5V, a rechargeable 3.7V lithium battery built inside and
chargeableness upon connected to the external power supply are all provided.
3. Large-screen LCD can display various parameters, with two methods of viewing, i.e. with
data and curves.
4. The time, date and week can be set and displayed. All the time information can be checked
by a.
5. It is of the intelligent design, full functions, zero setting, alarm settings and convenient
calibration.
6. The shell is compact and lightweight, which can be put in the pocket or bag and also can be
hung on the body and is easy to carry.
7. Two levels of the sound and light alarm are available. The four bright LEDs alert the user
when alarming.
II.
II.
II.
II. Product
Product
Product
Product Description
Description
Description
Description
There are five functions, an LCD display and 4 LED lights in the front of the product, which is
shown as follows:
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ENVIRONMENTAL SENSOR TECHNOLOGY CO. I NC.
Among them, the LCD screen is used to display the gas concentration, time and various
information parameters. The two LED lights on the top are alarm lamps, which flash
alternately when the gas alarms. The LED at the left side of the bottom of the LCD is the
power light, which is green and lights when the battery voltage is not enough. While the LED
at the right side is the communication light that becomes red and flashes once when
communicating one set of the data ( applicable for EST-2000 series only) .
The five buttons on the panel respectively are Power/Confirm, Menu/Shift, Back, Plus/Up and
Minus/Up.
1. Power/Confirm: long press (for about 3 seconds) facilitates the power and the instrument
switches the on-and-off machine. Short press facilitates the Confirm.
2. Menu/Shift: after booting, long press (for about 3 seconds) facilitates the menu to enter the
menu mode. Short press facilitates the shift.
3. Back: long/short press will both facilitate the Back and it will return to the last menu or exit
the menu mode.
4. Plus/Up: add a displayed unit to the value or turn upward for an option. Long press
facilitates the continuous operation.
5. Minus/Up: reduce a displayed unit to turn downward for an option. Long press facilitates
the continuous operation
In addition, there is a power connector on the left side of the product and the battery is
installed in the back cover of the product. The parts and names of the products are shown in
the following figure.
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