4
1. General description
Regulators line are designed for online monitoring of temperature in °C or °F, relative
humidity
of air without aggressive ingredients, barometric pressure and three binary inputs for detection
of binary signals. Measured temperature and relative humidity are recomputed to following humidity
expression: dew point temperature, absolute humidity, specific humidity, mixing ratio and specific
enthalpy. It is possible to set correction for altitude (pressure offset) and to choose one of the
following pressure units: hPa, kPa, mbar, mmHg, inHg, inH2O, PSI, oz/in2.
The device is equipped with two relay outputs for alarming or controlling of external devices. It is
possible to assign any input value to each relay, to set comparing limit, delay, hysteresis, acoustic
alarm or change its status by far control with using of Modbus communication protocol. The device
communicates via link RS485.
Type
Temperature Humidity
Pressure
Computed value
Binary inputs
AR006687
-
-
-
3x
AR006689
-
3x
AR006690
-
3x
-
3x
3x
AR006688
**/
-
-
AR006693
*/
The removable probe for compressed air measurement is noninterchangeable part of the device.
The protection of the connector is IP67
**/ The type
AR006688
is designed for two wires connection of external Pt1000 temperature
sensor.
Supported communication protocols are Modbus RTU and protocol compatible with standard
Advantech-ADAM. Devices are preset from manufacturer to Modbus RTU communication protocol.
If you would like to use different communication protocol then Modbus RTU, it is necessary preset
them – see latter. Temperature, relative humidity and pressure sensors are non-removable
instrument parts except
AR006688
device, that is designed for two wires connection of external
Pt1000 temperature sensor. Measured and computed values are displayed on dual line LCD. It is
also possible to display both readings with cyclic overwriting in 4 seconds interval. Display can be
also switched OFF totally.
2. Regulator mounting and connection
Regulators are designed for wall mounting. Device must be mounted on the plane surface to
prevent its deformation. Mounting holes and connection terminals are accessible after demounting of
four screws in the corners of the box and removing the lid. There is recommended to use screws with
half round head with cross-recessed screw ST 3.9 (DIN 7981). Lace the lead-in cable with outer
diameter of 3 to 6.5 mm through the glands at the case wall and connect them according schematic
below. Terminals are self-clamping and can be opened by a suitable screwdriver. For the opening,
insert the screwdriver to smaller terminal hole and lever by him. Do not forget to tighten glands and
case lid with inserted packing after cables connecting.
Insert attached plug into unused cable
glands too.
Do NOT connect the regulator under voltage.
It is NOT recommended to use the device for long time under condensation conditions. It could
be the cause of water steam condensation inside the sensor’s cover into water phase. This liquid phase