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Mounted through an outside wall, this humidity transmitter reads relative humidity in outdoor air to ±3% accuracy with a thermoset polymer capacitive element protected by a factory-fitted hydrophobic filter. Zero, span and full-scale test positions let a technician confirm the loop is live and correctly wired before leaving site.
Mounted through an outside wall, this humidity transmitter reads relative humidity in outdoor air to ±3% accuracy with a thermoset polymer capacitive element protected by a factory-fitted hydrophobic filter. Zero, span and full-scale test positions let a technician confirm the loop is live and correctly wired before leaving site.
The ACI Relative Humidity Outside Air utilizes a thermoset polymer capacitive sensing element with factory applied hydrophobic filter to deliver a proportional analog current or voltage output signal. The hydrophobic filter provides added resistance to moisture, dust, and other chemicals for greater long term reliability. The RH Outside Air transmitter features integral DIP switches for field selection of the proper output signal and supply voltage to meet your applications requirements. Each unit also contains 0%, 50%, and 100% test options to verify that the transmitter is both working and wired properly.
Features
Applications
| RH Measurement Range | 0 to 100% |
| RH Accuracy @ 77°F (25°C) | ± 1% over 20% RH Range between 20 to 90% | ± 2% or 3% from 10 to 95% |
| RH Stability | Repeatability | Sensitivity | Less than 2% drift / 5 years | 0.5% RH | 0.1% RH |
| RH Output Load Resistance | 4 to 20 mA: 700 Ohms maximum | 0 to 5 V DC or 0 to 10 V DC: 4K Ohms Minimum |
| RH Output Signal | 2-wire: 4 to 20 mA (Factory Default) | 3-wire: 0 to 5 or 0 to 10 V DC and 4 to 20 mA (Field Selectable) |
| RH Response Time (T63) | 20 Seconds Typical |
| RH Transmitter Stabilization Time | 30 Minutes (Recommended time before doing accuracy verification) |
| RH Supply Current (VA) | Voltage Output: 8 mA maximum (0.32 VA) | Current Output: 24 mA maximum (0.83 VA) |
| RH Supply Voltage (Reverse Polarity Protected) | 0 to 5 V DC: 12 to 40 V DC / 18 to 28 V AC | 0 to 10 V DC: 18 to 40 V DC / 18 to 28 V AC |
| RH Sensor Type | Capacitive with Hydrophobic Filter |
| RH Connections | Wire Size | Screw Terminal Blocks (Polarity Sensitive) | 16 (1.31 mm2) to 26 AWG (0.129 mm2) |
| RH Terminal Block Torque Rating | 4.43 to 5.31 lb-in (0.5 to 0.6 Nm) |
| Operating RH Range | 0 to 95% RH, non-condensing (Conformally Coated PCB's) |
| Operating Temperature Range | -40 to 140°F (-40 to 60°C) |
| Storage Temperature Range | -40 to 149°F (-40 to 65°C) |
| Product Weight | 0.59 lbs (268 g) |
| Agency Approvals | CE, UKCA, RoHS, WEEE |
| RH Measurement Range | 0 to 100% |
| RH Accuracy @ 77°F (25°C) | ± 1% over 20% RH Range between 20 to 90% | ± 2% or 3% from 10 to 95% |
| RH Stability | Repeatability | Sensitivity | Less than 2% drift / 5 years | 0.5% RH | 0.1% RH |
| RH Output Load Resistance | 4 to 20 mA: 700 Ohms maximum | 0 to 5 V DC or 0 to 10 V DC: 4K Ohms Minimum |
| RH Output Signal | 2-wire: 4 to 20 mA (Factory Default) | 3-wire: 0 to 5 or 0 to 10 V DC and 4 to 20 mA (Field Selectable) |
| RH Response Time (T63) | 20 Seconds Typical |
| RH Transmitter Stabilization Time | 30 Minutes (Recommended time before doing accuracy verification) |
| RH Supply Current (VA) | Voltage Output: 8 mA maximum (0.32 VA) | Current Output: 24 mA maximum (0.83 VA) |
| RH Supply Voltage (Reverse Polarity Protected) | 0 to 5 V DC: 12 to 40 V DC / 18 to 28 V AC | 0 to 10 V DC: 18 to 40 V DC / 18 to 28 V AC |
| RH Sensor Type | Capacitive with Hydrophobic Filter |
| RH Connections | Wire Size | Screw Terminal Blocks (Polarity Sensitive) | 16 (1.31 mm2) to 26 AWG (0.129 mm2) |
| RH Terminal Block Torque Rating | 4.43 to 5.31 lb-in (0.5 to 0.6 Nm) |
| Operating RH Range | 0 to 95% RH, non-condensing (Conformally Coated PCB's) |
| Operating Temperature Range | -40 to 140°F (-40 to 60°C) |
| Storage Temperature Range | -40 to 149°F (-40 to 65°C) |
| Product Weight | 0.59 lbs (268 g) |
| Agency Approvals | CE, UKCA, RoHS, WEEE |
