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Sending space temperature over a long cable run without signal loss, this room temperature transmitter converts a 1,000 ohm RTD reading into a 4-20 mA current loop. Two-wire termination keeps the field wiring simple, and the current signal stays immune to the voltage drop that limits a bare resistance sensor.
Sending space temperature over a long cable run without signal loss, this room temperature transmitter converts a 1,000 ohm RTD reading into a 4-20 mA current loop. Two-wire termination keeps the field wiring simple, and the current signal stays immune to the voltage drop that limits a bare resistance sensor.
The ACI Transmitter Room Series features a two-wire, 4 to 20 mA loop powered output with optional 3-Wire voltage output signals available. All transmitters include Zero and Span adjustments for field calibration and are calibrated using NIST Certified Calibration equipment. ACI recommends the use of an 18 to 22 AWG shielded cable for all temperature transmitter installations to reduce the chances of noise being introduced onto the signal lines. The room transmitters are designed to be mounted over a standard single gang junction box or hole in the wall.
Features
Applications
| Calibration Temperature Spans | Minimum Temp. Span: 50°F (28°C) | Maximum Temp. Span: 200°F (93°C) |
| Calibrated Transmitter Accuracy | Linearity | Temp. Spans < 500°F (260°C): ± 0.2% |
| RTD Tolerance Class | Sensor Accuracy | Where |t| is the absolute valuse of temperature above or below 0°C in °C |
| Sensor Stability | ± 0.03% after 1000 hours @ 300°C (572°F) |
| Set Point Accuracy | 20 mA (Far Left) / 4 mA (Far Right)(RA-Reverse Acting (Optional)) |
| Temperature Drift | Temp. Spans < 100°F (38°C): ± 0.04%/°F | Temp. Spans > 100°F (38°C): ± 0.02% |
| Warm Up Time | Warm Up Drift | 10 minutes | ± 0.1% |
| Output Signals | Current: 4 to 20 mA (2-Wire Loop Powered) | Voltage: 1 to 5 V DC or 2 to 10 V DC (3-Wires) |
| Override Contact Type | Contact Ratings | Dry Contact "N/O" Contact | Minimum: 10 uA @ 1 V DC | Maximum: 50 mA @ 24 V DC ± 10% | 4 to 20 mA: 4 mA (Far Left) / 20 mA (Far Right)(DA-Direct Acting (Default)) |
| Maximum Load Resistance | (Terminal Voltage - 8.5 V) | 0.020 A |
| Supply Current | 25 mA minimum |
| Connections | Wire Size | Screw Terminal Blocks (Polarity Sensitive) | 16 AWG (1.31 mm2) to 26 AWG (0.129 mm2) |
| Terminal Block Torque Rating | 0.37 ft-lb (0.5 N-3m) nominal |
| Din Standard | Temperature Coefficient | DIN EN 60751 (IEC 751) | 3850 ppm / °C |
| Operating Humidity Range | 5 to 95% RH non-condensing |
| Operating Temperature Range | 35 to 122°F (1.5 to 50°C) |
| Storage Temperature Range | Non-LCD:-40 to 65°C (-40 to 149°F) | LCD Display: -10 to 65°C (14 to 149°F) |
| Product Dimensions (L x W x H) | 4.45 x 2.70 x 1.10" (113.0 x 68.6 x 27.9 mm) |
| Product Weight | 0.13 lbs (59 g) |
| Agency Approvals | RoHS2, WEEE |
| TTM100/TTM1K Certification Points | 3 Point NIST: 20%, 50% & 80% of span | 5 Point NIST: 20%, 35%, 50%, 65% & 80% of span |
| Calibration Temperature Spans | Minimum Temp. Span: 50°F (28°C) | Maximum Temp. Span: 200°F (93°C) |
| Calibrated Transmitter Accuracy | Linearity | Temp. Spans < 500°F (260°C): ± 0.2% |
| RTD Tolerance Class | Sensor Accuracy | Where |t| is the absolute valuse of temperature above or below 0°C in °C |
| Sensor Stability | ± 0.03% after 1000 hours @ 300°C (572°F) |
| Set Point Accuracy | 20 mA (Far Left) / 4 mA (Far Right)(RA-Reverse Acting (Optional)) |
| Temperature Drift | Temp. Spans < 100°F (38°C): ± 0.04%/°F | Temp. Spans > 100°F (38°C): ± 0.02% |
| Warm Up Time | Warm Up Drift | 10 minutes | ± 0.1% |
| Output Signals | Current: 4 to 20 mA (2-Wire Loop Powered) | Voltage: 1 to 5 V DC or 2 to 10 V DC (3-Wires) |
| Override Contact Type | Contact Ratings | Dry Contact "N/O" Contact | Minimum: 10 uA @ 1 V DC | Maximum: 50 mA @ 24 V DC ± 10% | 4 to 20 mA: 4 mA (Far Left) / 20 mA (Far Right)(DA-Direct Acting (Default)) |
| Maximum Load Resistance | (Terminal Voltage - 8.5 V) | 0.020 A |
| Supply Current | 25 mA minimum |
| Connections | Wire Size | Screw Terminal Blocks (Polarity Sensitive) | 16 AWG (1.31 mm2) to 26 AWG (0.129 mm2) |
| Terminal Block Torque Rating | 0.37 ft-lb (0.5 N-3m) nominal |
| Din Standard | Temperature Coefficient | DIN EN 60751 (IEC 751) | 3850 ppm / °C |
| Operating Humidity Range | 5 to 95% RH non-condensing |
| Operating Temperature Range | 35 to 122°F (1.5 to 50°C) |
| Storage Temperature Range | Non-LCD:-40 to 65°C (-40 to 149°F) | LCD Display: -10 to 65°C (14 to 149°F) |
| Product Dimensions (L x W x H) | 4.45 x 2.70 x 1.10" (113.0 x 68.6 x 27.9 mm) |
| Product Weight | 0.13 lbs (59 g) |
| Agency Approvals | RoHS2, WEEE |
| TTM100/TTM1K Certification Points | 3 Point NIST: 20%, 50% & 80% of span | 5 Point NIST: 20%, 35%, 50%, 65% & 80% of span |
