Datasheet

v1.2 / Modification rights reserved
EE800
48
EE800 combines CO
2
, temperature (T) and relative humidity (RH)
measurement in one device with modern design. Additionally, it calculates
the dewpoint temperature (Td).
The EE800 incorporates the E+E dual wavelength NDIR CO
2
sensor, which
compensates for ageing effects, is highly insensitive to pollution and offers
outstanding long term stability. A multiple point CO
2
and T factory adjust-
ment procedure leads to excellent CO
2
measurement accuracy over the
entire T working range.
EE800 with analogue outputs features an optional passive T sensor, while
at EE800 with RS485 additional physical quantities are available on the
Modbus RTU and BACnet MS/TP interface: absolute humidity, mixing ratio,
enthalpy, frost point temperature and water vapor partial pressure.
The snap-on enclosure saves installation costs and it is available in two sizes according to regional standards.
An optional USB configuration adapter facilitates easy setup and adjustment of EE800.
EE800
Demand controlled ventilation
Heating, ventilation and air conditioning
Building management
CO
2
autocalibration
Modbus, BACnet or analogue outputs
Outstanding long-term stability
Temperature compensation
Optional passive T output
Easy installation
HVAC Room Transmitter for
CO
2
, Temperature and Relative Humidity
Typical Applications Key Features
Measured values
CO
2
Measurement principle Dual Wavelength Non-Dispersive Infrared Technology (NDIR)
Working range 0...2000 / 5000 ppm
Accuracy at 25 °C
(77 °F) 0...2000 ppm: < ± (50 ppm +2 % of measuring value)
and 1013 mbar 0...5000 ppm: < ± (50 ppm +3 % of measuring value)
Response time
τ
63
typ. 110 s
Temperature dependence typ. ± (1 + CO
2
concentration [ppm] / 1000) ppm/°C (-20...45 °C) (-4...113° F)
Calibration interval
1)
>5 years
Temperature
Accuracy
2)
at 20 °C (68 °F) ±0.3 °C (±0.54 °F) RS485 digital interface;
±0.3 °C
(±0.54 °F) voltage output / ±0.7 °C (±1.26 °F) current output
Relative Humidity
Working range 10...90 % RH
Accuracy at 20 °C
(68 °F) ±3 % RH (30...70 % RH) ±5 % (10...90 % RH)
Calculated values
Dewpoint temperature
3)
Working range -30...55 °C (-22...131 °F)
Accuracy < ±2 °C (3.6 °F) for |T| - |Td| < 25 °C (45 °F)
< ±3 °C
(5.4 °F) for |T| - |Td| < 30 °C (54 °F)
Outputs
Analogue
0...2000 / 5000 ppm 0-5 V / 0-10 V -1 mA < IL < 1 mA
4-20 mA R
L
< 500 Ohm
Digital Interface RS485 with max. 32 devices on one bus
Protocol Modbus RTU or BACnet MS/TP
Temperature passive please see ordering guide (only in combination with analogue outputs)
1) Under normal operating conditions.
2) U
V
= 24 V DC and R
L
= 250 Ω for version with current output
3) Additional calculated physical quantities available only on the Modbus and BACnet interface: absolute humidity, mixing ratio, enthalpy,
frost point temperature and water vapor partial pressure.
Technical Data
EE800
EE800