EK-H4 SENSIRION, EK-H4 Datasheet - Page 3

• Manufacturer Part Number: EK-H4
• Description: EVALUATION KIT, HUMIDITY
• Manufacturer: SENSIRION

EK-H4 Users Guide
1
The Evaluation Kit EK-H4 may be used as a stand-alone
device, displaying measured values on the screen on the
multiplexer box or – connected to a computer – as a data-
logger run by multi-viewer software.
The stand-alone device displays temperature and humidity
values of each connected sensor plus dew-point derived
from the two measured values.
Besides the above mentioned values the data-logger
software displays calculated absolute humidity and power
consumption. Furthermore, supply voltage, sensor
resolution and measurement frequency can be chosen in
a certain range and the on-chip heater may be plugged on
and off. Eventually measured data can be exported for
data processing.
2
Figure 2 Contents of EK-H4 suitcase: Respective adapter
plug needs to be mounted to power side of power supply cable.
Make sure protective plastic cap on power supply cable is
removed before doing this. MS = Memory Stick with EK-H4
software and datasheets. SHT = humidity and temperature
sensors, SHT71 and SHT21. Sensors are connected to sensor
cables and those to the multiplexer box. USB cable is needed to
connect the multiplexer box to a computer for data-logging
function. One cavity remains empty.
www.sensirion.com
Evaluation Kit Features
EK-H4 Suitcase
Adapter plugs
for power
supply cable
Power supply
cable
Empty
4 Sensor cables
USB cable
MS
Multiplexer box
SHT
MS
Version 1.1 – May 2010
3
3.1 Getting Started
Set up and application of the stand-alone device is straight
forward:
1.
2.
3.
4.
Figure 3 Stand-Alone Evaluation Kit. Voltage supply to be set
in the range of AC 80 … 250V.
After powering the EK-H4 as standalone measurement
tool the screen shows following information:
The first screen shows an overview over the connected
sensors. In the first row the sensor number, which can be
matched with the printed number on the cover, is visible.
In the second column the temperature is displayed in °C.
The third column shows the relative humidity. Not
connected sensor ports are displayed with “--.-- ” .
3.2 Display Information
Stand-Alone Evaluation Kit
Select multiplexer box, power supply cable, sensors
with sensor cables as many as needed.
Connect sensors via sensor cables to the multiplexer
box.
Connect multiplexer box via power supply cable to
power (voltage supply also may occur via USB cable
from a computer). Please note: The specific plug
needs to be connected to the power supply cable –
the plastic protection cap on cable side must be
removed before connecting the plug.
As soon as the green LED light is shining, the
measurement starts automatically.
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2
3
4
25.45°C
--.--°C
24.98°C
25.71°C
Evaluation Kit
Sensirion
for SHTxx
EKH4 V1.0
45.32%RH
--.--%RH
46.27%RH
45.46%RH
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