Testo 6651 Temperature & Humidity Transmitter

Item #:

XXYY-0555-6651

Brand:

Testo

$615.00

Qty

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Description

6651 Temperature & Humidity Transmitter by Testo

Not all measurement problems can be solved with "simple" transmitters. The testo 6651 meets special challenges. When combined with the probe series testo 660x, the testo 6651 becomes the first choice in demanding air conditioning technology as well as in many other applications.

Optimum adjustment concept thanks to adjustment of the entire signal chain incl. analog adjustment
Ethernet, relay and analog outputs allow optimum integration into individual automation systems
Self-monitoring and early warning guarantee high system availability
Calculation and presentation of the humidity parameters relative humidity absolute humidity and dewpoint.
P2A software for parameterization, adjustment and analysis saves time and costs in commissioning and maintenance
Display with multi-language display
High-quality plastic housing

Specifications

Parameters
Humidity
Units	Relative humidity %RH , °Ctd, °Ftd, g/m³
Meas. range	0 to 100 %RH
Temperature
Units	Temperature in °C / °F
Meas. range	Dependent on probe (testo 660x)
Inputs and outputs
Analog outputs
Quantity	2 channels (analog signal type uniform for both channels)
Output type	0/4 to 20 mA (2-wire/4-wire) 0 to 1/5/10 V (4-wire)
Measuring rate	1/s
Galvanic isolation	Galvanic isolation of the output signals (2-wire and 4-wire), isolation of supply from outputs (4-wire)
Resolution	12 bit
Accuracy of the analog outputs	0/4 to 20 mA / ±0.03 mA 0 to 1 V / ±1.5 mV 0 to 5 V / ±7.5 mV 0 to 10 V / ±15 mV
Max. load	2-wire: 12 VDC: max.100 Ω / 24 VDC: max. 500 Ω / 30 VDC: max. 625 Ω 4-wire: 500 Ω
Further outputs
Ethernet	Optional: module can be fitted as intermediary layer
Relays	Optional: 4 relays (free allocation to measurement channels or as collective alarm with operating menu/P2A software), up to 250 VDC /3 A (NO/NC)
Other outputs	Mini DIN for Testo P2A software and portable measuring instruments testo 400/650
Power
Voltage supply	2-wire: 24 VDC ±10 % 4-wire: 20 to 30 VAC/DC
Current consumption	max. 300 mA
General technical data
Design
Material	Plastic
Dimensions	122 x 162 x 77 mm (without probe)
Weight	0.62 kg (without probe, without Ethernet module)
Display
Display	Optional: 2-line LCD with clear text line and relay status display
Resolution	0.1 %RH / 0.01 °C/°F / 0.1 °Ctd/°Ftd
Operation
Parameterization	Four operating buttons for display / P2A software
Installation
Cable screw fitting	Standard: PG screw fitting Optional: M16 or M20 M plug connection or optional: NPT 1/2 plug connection
Probe connection	Digital plug connection
Other features
Protection class	IP65
EMC	2004/108/EG
Operating conditions
Operating temperature (with integrated relay)	-40 to +60 °C
Without display Operating temperature	-40 to +70 °C / -40 to +158 °F
Without display Storage temperature	-40 to +80 °C / -40 to +176 °F
With display Operating temperature	0 to +50 °C / +32 to +122 °F
With display Storage temperature	-40 to +80 °C / -40 to +176 °F
Measurement medium	Air, nitrogen; more on request; applicationsupport@testo.de