Technische Daten
hygrotest 600
Electrical connectionhygrotest 600The hygrotest 600 has two analog outputs ( 4 to 20 mA each in 4-wire technology) 
| Terminal | Terminal allocation |
|---|
| 1 | Measurement signal humidity (+) and simultaneously supply connection 12 to 30 VDC (+) | | 2 | Measurement signal humidity (-) and simultaneously supply connection GND (-) | | 3 | Measurement signal temperature (+) and simultaneously supply connection 12 to 30 VDC (+) | | 4 | Measurement signal temperature (-) and simultaneously supply connection GND (-) |
 | hygrotest 600 is supplied via the humidity terminal. The temperature output, where applicable, is only functional when the humidity circuit is supplied with current. This also applies in combination with all displays. |
Technische Daten
hygrotest 650
Electrical connectionhygrotest 650 (2-wire or 4-wire technology)The hygrotest 650 offers different order options for the analog signals: 4 to 20 mA (2-wire) as well as the 4-wire options 0 to 1 V / 0 to 10 V / 0 to 20 mA (or 4 to 20 mA with hygrotest 650 HP) 
Electrical connection with 2-wire technology| Terminal | Terminal allocation channel 1 |
|---|
| 1 | Measurement signal output channel 1 (+) and simultaneously supply connection 12 to 30 VDC | | 2 | Measurement signal output channel 1 (-) and simultaneously supply connection GND (-) | | 3 | not used | | 4 | not used |
sowie | Terminal | Terminal allocation channel 2 |
|---|
| 1 | Measurement signal output channel 2 (+) and simultaneously supply connection 12 to 30 VDC | | 2 | Measurement signal output channel 2 (-) and simultaneously supply connection GND (-) | | 3 | not used | | 4 | not used |
| hygrotest 650 with putput 4 to 20 mA (2-wire technology) is supplied via the humidity terminal. The temperature output is only functional when the humidity cicuit is supplid with current. |
Electrical connection with 4-wire technologyThe output variants 0 to 20 mA, 0 to 1 V, 0 to 10 V are only possible with 4-wire technology (4 to 20 mA only with hygrotest 650 HP). This means that two terminals each (1 and 2) per terminal block are for supply. Two terminals each (3 and 4) per terminal block are signal outputs.
Manual switching of the analog outputs is not permitted. Please order the variant suited to your application. | Terminal | Terminal allocation channel 1 |
|---|
| 1 | Supply connection 12 to30 VDC (+) | | 2 | Supply connection GND (-) | | 3 | Measurement signal output channel 1 (+) | | 4 | Measurement signal output channel 1 (-) |
oder | Terminal | Terminal allocation channel 2 |
|---|
| 1 | Supply connection 12 to30 VDC (+) | | 2 | Supply connection GND (-) | | 3 | Measurement signal output channel 2 (+) | | 4 | Measurement signal output channel 2 (-) |
Earthing the hygrotest 650Because of the metal housing, earthing the instrument is recommended. This is carried out as follows:
Earthing the hygrotest 650Unscrew the cover of the hygrotest 650. The hygrotest then looks like this:  | As can be seen in the illustration, the PE connection is situated in the bottom right of the housing base. It is an M5 thread. You should therefore use an M5 screw. |
The connection should look like this: 
|
