Compressed-air thermometer hygrometer with Ethernet interface and relays
BRAND
Compressed-air ambient humidity, temperature Ethernet sensor with two relay outputs. T+RH probe from hard anodized duralumin for compressed air up to 25 bars with cable. Humidex reading.
Sensor H3531P is designed for online monitoring of temperature, relative humidity of air without aggressive substances. Three binary inputs to detection of two-states signals are the advantage. Other devices are controlled by two relay outputs.
High precision capacitive polymer sensor ensures excellent long term calibration stability and ultimate accuracy. Measured values are also converted to other humidity interpretation: dew point temperature, absolute humidity, specific humidity, mixing ratio and specific enthalpy.
The device is supplied with T+RH probe with 1m cable. Cable lengths 2m or 4m available optionally.
Processing and analysis of measured data:
- online in COMET Cloud
- COMET Database software
- integration into 3-party systems
Technical data
Measured value
Temperature
Relative humidity
Counted values (dew point…)
Two-state signal
TEMPERATURE SENSOR
Measuring range
-30 to +105 °C
-30 to +105 °C
Accuracy
±0.4 °C
±0.4 °C
Resolution
0.1 °C
0.1 °C
HUMIDITY SENSOR
Measuring range
0 to 100 % RH
0 to 100 % RH
Accuracy
±2.5 % RH from 5 to 95 % at 23 °C
±2.5 % RH from 5 to 95 % at 23 °C
Resolution
0.1% RH
0.1% RH
DEW POINT
Measuring range
-60 to +80 °C
-60 to +80 °C
Accuracy
±1.5°C for dew point temperature +10°C and higher at ambient temperature +25°C
±2.0°C for dew point temperature 0°C at ambient temperature +25°C
±3.0°C for dew point temperature -10°C at ambient temperature +25°C
±6.0°C for dew point temperature -20°C at ambient temperature +25°C
±1.5°C for dew point temperature +10°C and higher at ambient temperature +25°C
±2.0°C for dew point temperature 0°C at ambient temperature +25°C
±3.0°C for dew point temperature -10°C at ambient temperature +25°C
±6.0°C for dew point temperature -20°C at ambient temperature +25°C
Resolution
0.1 °C
0.1 °C
MEASURING THE MOISTURE OF COMPRESSED AIR
Measuring range
up to 25 bars
up to 25 bars
Air flow velocity
up to 25 m/s at a pressure of 1 bar (1m/s at a pressure of 25 bar)
up to 25 m/s at a pressure of 1 bar (1m/s at a pressure of 25 bar)
RELAY OUTPUTS
Quantity
2
2
Maximal voltage
50 V
50 V
Maximal current
2 A
2 A
Maximal power
60 VA
60 VA
BINARY INPUTS
Quantity
3
3
Signal for binary inputy
dry contact, open collector or two-state voltage signal.
Inputs are not galvanically isolated.
dry contact, open collector or two-state voltage signal.
Inputs are not galvanically isolated.
Minimum pulse duration on binary input
500 ms
500 ms
Voltage across open contact
< 3,3 V
< 3,3 V
Low voltage level
0 to +0,5 V
0 to +0,5 V
High voltage level
+3,0 to +30 V
+3,0 to +30 V
GENERAL TECHNICAL DATA
Operating temperature
-30 to +80 °C
-30 to +80 °C
Channels
1x connectable temperature+humidity probe
1x connectable temperature+humidity probe
Acoustic alarm
from built-in beeper – switchable
from built-in beeper – switchable
Counted values
humidex, dew point, absolute humidity, specific humidity, mixing ratio, specific enthalpy
humidex, dew point, absolute humidity, specific humidity, mixing ratio, specific enthalpy
Output
Ethernet
Ethernet
Measuring interval
2 s
2 s
Range of humidity sensor temperature compensation
all temperature range
all temperature range
Available temperature units
degrees Celsius, degrees Fahrenheit
degrees Celsius, degrees Fahrenheit
Communication protocol
WWW, ModbusTCP, SNMPv1, SOAP, XML
WWW, ModbusTCP, SNMPv1, SOAP, XML
Alarm protocols
E-mail (SMTP authentication is supported), SNMP Trap, Syslog
E-mail (SMTP authentication is supported), SNMP Trap, Syslog
Power
9-30 Vdc
9-30 Vdc
Protection class
IP40
IP40
Dimensions
136 x 159 x 45 mm; length/diameter of external probe 150/18 mm
136 x 159 x 45 mm; length/diameter of external probe 150/18 mm
External probe cable length
1 meter
1 meter
Weight
approx. 410 g
approx. 410 g
Warranty
3 years
3 years
code
H3531P
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