A/RH1-CP-D
Details
Details
Duct RH Transmitter, +/-1%, 10k Type 2 Thermistor
Outputs 4-20mA as shipped (0-5V or 0-10V by DIP switch) and needs 12 to 40 VDC or 18 to 28 VAC, depending on the output.
Holds its rated accuracy only inside one 20% RH band between 20 and 90% RH.
Adds a separate passive temp sensor on 2 flying leads.
Key Features
- Duct mounting hole: 0.875 in. (22.23 mm)
- Temp sensor: 10k ohm Type 2 thermistor (NTC) at 77 deg F (25 deg C)
- Operating temperature: -40 to 140 deg F
Product Specifications
| Manufacturer | ACI |
|---|---|
| Model | A/RH1-CP-D |
| ACI item number | 122523 |
| Configuration | Duct mount |
| RH accuracy | +/-1% over a 20% RH band between 20 and 90% RH at 77 deg F (25 deg C) |
| RH measurement range | 0 to 100% RH |
| RH output | 2-wire 4-20mA (factory default); 3-wire 0-5V, 0-10V, or 4-20mA, field selectable |
| Supply voltage | 4-20mA: 15 to 40 VDC or 18 to 28 VAC (250 ohm load), 18 to 40 VDC or 18 to 28 VAC (500 ohm load); 0-5V: 12 to 40 VDC or 18 to 28 VAC; 0-10V: 18 to 40 VDC or 18 to 28 VAC; reverse polarity protected |
| Supply current | Voltage output: 8 mA maximum (0.32 VA); current output: 24 mA maximum (0.83 VA) |
| Output load | 4-20mA: 700 ohm maximum; 0-5V or 0-10V: 4k ohm minimum |
| Operating RH range | 0 to 95% RH, non-condensing (conformally coated PCBs) |
| Operating temperature | -40 to 140 deg F (-40 to 60 deg C) |
| Storage temperature | -40 to 149 deg F (-40 to 65 deg C) |
| RH sensor | Capacitive with hydrophobic filter |
| Stability, repeatability, sensitivity | Less than 2% drift over 5 years; 0.5% RH; 0.1% RH |
| RH response time (T63) | 20 seconds typical |
| Stabilization time | 30 minutes recommended before accuracy verification |
| Field adjustments | DIP switches: output select, 0%/50%/100% test outputs, offset up or down in 0.5% steps (10% maximum), direct or reverse acting |
| Connections | Screw terminal blocks (polarity sensitive), 16 to 26 AWG |
| Terminal torque | 4.43 to 5.31 lb-in (0.5 to 0.6 Nm) |
| Temp sensor | 10k ohm Type II thermistor (NTC) at 77 deg F (25 deg C), white/green leads |
| Temp sensor accuracy | +/-0.36 deg F (+/-0.2 deg C) from 32 to 158 deg F (0 to 70 deg C) |
| Thermistor dissipation constant | 3 mW/deg C |
| Thermistor response time (T63) | 10 seconds nominal |
| Temp sensor leads | 2 flying leads, 14 in. (35.6 cm), 22 AWG, etched PTFE (Teflon) insulation |
| Enclosure | Euro style, ABS plastic, UL94-V0, -40 to 140 deg F (-40 to 60 deg C) |
| Sensing tube | filter | 304 SS tube | 304 SS sintered filter |
| Sensing tube dimensions | 7.75 x 0.75 in. (196.85 x 19.05 mm), length x diameter |
| Enclosure dimensions | 4.30 x 3.80 x 1.90 in. (109.22 x 96.56 x 48.28 mm) |
| Duct mounting hole | 0.875 in. (22.23 mm) |
| Product weight | 1.22 lb (0.55 kg) |
| Agency approvals | UKCA, CE, RoHS2, WEEE |
| Warranty | 5-year limited |