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Testo 6651 Temperature & Humidity Transmitter
Item #:
XXYY-0555-6651
Brand:
Testo
Share this product:
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
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 | |
