Automation Components, Inc. A/1K-3W-R2

The ACI Platinum Room Series combines flexibility with an attractive form factor in "-R2" or "-R" style enclosures. These enclosures feature a four-way airflow design to minimize sensor self-heating. Depending on the enclosure style, they are available in white "-R2" or beige "-R" colors, designed for mounting on single-gang junction boxes or wall cutouts using drywall anchors. The beige "-R" style enclosure is optionally available with an LCD display. Screw terminal blocks are provided for connection to building management systems. An optional 3.175 mm (1/8 in.) black foam pad with pressure-sensitive adhesive is available to isolate the sensor from warm air currents within the wall or wall surface temperature effects. The cover can be secured with a 1/16 in. hex screwdriver to prevent easy removal. The "LCD" option uses two temperature sensors to monitor ambient air temperature within the space, with single-point factory calibration.

• Sensor Type: Platinum RTD
• Sensor Curve: PTC (Positive Temperature Coefficient)
• Number of Sensing Points: One
• Sensor Output (at 0°C (32°F)): A - 100 - xW series nominal 100Ω; A/1K - xW series nominal 1000Ω
• Sensor Accuracy (at 0°C (32°F)): ±0.06% Class A (tolerance formula: ±°C = (0.15°C + (0.002×|t|)), where |t| is the absolute temperature value above or below 0°C)
• Temperature Coefficient: 3850 ppm/°C
• Sensor Stability: ±0.03% after 1000 hours at 300°C (572°F)
• Response Time (63% step change): Nominal 8 seconds
• Self-Heating / Maximum Operating Current: 100Ω RTD — 7 mW/°C (still air), 15 mA; 1 kΩ RTD — 4 mW/°C (still air), 3 mA
• LCD Supply Voltage: 9 V DC to 35 V DC / 24 V AC (50 Hz to 60 Hz)
• LCD Supply Current / Apparent Power: < 4 mA / 0.12 VA
• LCD Accuracy: Typical ±2°F or ±2°C at 21.5°C (71°F)
• LCD Display Units: °F (Fahrenheit) or °C (Celsius)
• Display Digits: 3 1/2-digit display
• LCD Expected Service Life: 50,000 hours minimum
• Setpoint Tolerance: ±10% of span
• Operating Range: 1.5°C to 50°C (35°F to 122°F)
• Storage Temperature Range: -40°C to 65°C (-40°F to 149°F) without LCD; -10°C to 65°C (14°F to 149°F) with LCD
• Operating Humidity Range: 10% to 95% RH, non-condensing
• Connection Type: Screw terminal block (no polarity required)
• Wire Gauge: 1.31 mm² (16 AWG) to 0.129 mm² (26 AWG)
• Terminal Block Torque Rating: 0.5 Nm minimum; 0.6 Nm maximum
• Enclosure Material / Flammability Rating / Color: "-R2" enclosure — ABS plastic, UL94-HB, white; "-R" enclosure — ABS plastic, UL94-HB, beige
• Agency Certifications: CE, UKCA, RoHS2, WEEE

• Ambient temperature sensing
• Office buildings
• Educational institutions
• Commercial buildings
• OEM