Spectrum Enterprises

The Series 641RM Air Velocity Transmitter with Remote Probe features the same highly accurate heated mass flow sensor as the Series 641, with a remote probe construction. The units 6´ cable which connects the sensing probe with the electronic enclosure allows the enclosure to be mounted where it can be more easily accessed.

NIST CALIBRATION available in Product Configurator.

PRODUCT APPLICATIONS

• Exhaust stack flow monitoring
• Air control in drying processes
• HVAC air velocity measurements
• Fan supply and exhaust tracking
• Clean room ventilation monitoring

CTV 110Temperature and air velocity transmitter

• Measuring range from 0 to 30 m/s and from 0 to 50°C

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  0-10 V or 4-20 mA output

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  “1⁄4 turn” system mounting with wall-mount plate

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  Alternating display of air velocity and  temperature

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  With or without 10-digits LCD display

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  Housing with simplified mounting systemHousing with simplified mounting systeme

The Series AVU Air Velocity Transmitter is ideal for a wide range of HVAC measurement and control applications, particularly in complete building control and energy management systems. The Series AVU Transmitter operates by measuring the heat loss from one of the two sensing elements in the air stream, then calculating the air velocity. Units are virtually immune to drift due to the design of the sensing element, which makes the transmitter accurate over the whole air velocity range.

PRODUCT APPLICATIONS

• Supply and exhaust fan tracking
• Clean room systems
• Air pollution studies and manufacturing
• Zone control in HVAC systems

The EE660 air velocity sensor operates on the hot film anemometer principle and is optimised for precise measurement of very low air velocity in laminar flow monitoring and clean room applications.EE660 employs E+E air flow sensors manufactured in thin film technology, which stands for excellent accuracy and long-term stability down to 0.15 m/s (30 ft/min). The device is available with current and voltage output or with RS485 interface an Modbus RTU or BACnet MS/TP interface. EE660 is user configurable and adjustable with jumpers on the electronics board or with the EE-PCS Product Configuration Software.

Key Features EE660

Accurate measurement down to 0.15 m/s (30 ft/min)

Excellent long term stability

High resistance to pollution

Small angle dependency

Large, easily readable display

Current and voltage output

Modbus RTU or BACnet MS/TP

User configurable and adjustable

Technical data EE660

0...1 m/s (0...200 ft/min)
0...1.5 m/s (0...300 ft/min)
0...2 m/s (0...400 ft/min)
MEASURING RANGE SELECTABLE BY JUMPER

0.15...1 m/s ±(0.04 m/s + 2 % of mv)
0.15...1.5 m/s ±(0.05 m/s + 2 % of mv)
0.15...2 m/s ±(0.06 m/s + 2 % of mv)
ACCURACY AT 20 °C (68 °F), 45 % RH, 1013 HECTOPASCAL

typ. 4 sec or typ. 1 sec.
RESPONSE TIME(AT CONSTANT TEMPERATURE)

0-10 V and 4-20 mA
OUTPUT ANALOGUE - SELECTABLE

Modbus RTU or BACnet MS/TP
OUTPUT DIGITAL

24 V AC/DC
SUPPLYReports EE660

Monitoring of laminar air flow cabinets
Laminar flow cabinets are used as local clean rooms for the production, assembly and testing of sophisticated products with high quality standards. The directed, turbulence-free air flow reduces the suspension of existing particles and removes them with the downwardly directed air flow

The EE650 air velocity transmitter is dedicated for accurate and reliable measurement in building automation and ventilation applications. The device employs an innovative air velocity sensing element, which operates on the thermal anemometer principle and is manufactured by E+E in state-of-the-art thin film technology. Due to its innovative design, the sensing element is very robust and highly insensitive to pollution, which leads to outstanding long-term performance. For the EE650 with analogue output, the measuring range 0-10/15/20 m/s (0-2000/3000/4000 ft/min), the output signal 4-20 mA or 0-10 V as well as the response time 1 or 4 seconds are selectable by jumpers. The bus address, the termination resistor and the response time of the Modbus RTU and BACnet MS/TP versions can also be easily set on the electronics board. The enclosure design and the mounting flange included in the scope of supply allow for fast and easy installation. With an optional adapter cable and the free EE-PCS product configuration software, the user can adjust the EE650, set the output scale and select the interface parameters.

EE660Sensor for Very Low Air VelocityThe EE660 air velocity sensor operates on the hot film anemometer principle and is optimised for precise measurement of very low air velocity in laminar flow monitoring and clean room applications.