The TT233 model is a space-saving two-wire transmitter that isolates and converts a millivolt or thermocouple sensor input to a proportional 4-20mA control signal. Power is received from the output loop current or a DC supply when using a three-wire connection. The transmitter performs thermocouple linearization, cold junction compensation, and lead-break detection. High-voltage isolation separates the input from the output circuit. Isolation protects from surges, reduces noise, and eliminates ground loop errors. Setup and calibration are fast and easy with a convenient USB connection to your PC and Acromag’s Windows configuration software. Advanced signal processing capabilities, variable range input, and convenient USB programming make this instrument a very versatile temperature measurement device. These transmitters can withstand harsh industrial environments and operate reliably across a wide temperature range with very low drift. They feature RFI, EMI, ESD, EFT, and surge protection plus low radiated emissions.

Performance Specifications

IMPORTANT: To prevent damage or errors from grounded PCs and surges, Acromag strongly recommends the use of their USB-ISOLATOR when configuring a TT230 Series transmitter.

USB Interface

USB Connector: USB Mini-B type socket, 5-pin USB Data Rate: 12Mbps. USB v1.1 and 2.0 compatible USB Transient Protection: Transient voltage suppression on power and data lines USB Cable Length: 5.0 meters maximum Driver: Not required. Uses built-in Human Interface Device (HID) USB drivers of the Windows operating system

Input

Default Configuration/Calibration: Input: TC J, -210 to 760°C, high filter, Break: up Output: 4 to 20mA Input Ranges and Accuracy Input                         Range                                     Accuracy TC J         -210 to 760°C (-346 to 1400°F)             ±0.5°C TC K        -200 to 1372°C (-328 to 2502°F)           ±0.5°C TC T        -260 to 400°C (-436 to 752°F)                ±0.5°C TC R          -50 to 1768°C (-58 to 3214°F)              ±1.0°C TC S          -50 to 1768°C (-58 to 3214°F)              ±1.0°C TC E        -200 to 1000°C (-328 to 1832°F)           ±0.5°C TC B        260 to 1820°C (500 to 3308°F)              ±1.0°C TC N       -230 to -1300°C (-274 to 2372°F            ±1.0°C mV          -100 to 100mV                                             ±0.1mV Thermocouple Reference (Cold Junction Compensation): ±0.2°C typical, ±0.5°C maximum at 25°C Ambient Temperature Effect: Better than ±80ppm/°C (±0.008%/°C) Zero Scaling Adjust: 0 to 95% of range, typical Lead Break (Sensor Burnout) Detection: Configurable for either upscale (24mA) or downscale (3.3mA) operation Input Over-Voltage Protection: Bipolar Transient Voltage Suppressers (TVS), 5.6V clamp level typical Resolution: Millivolt input: 0.0025% (1 part in 40,000) Thermocouple input: 0.1°C Input Filter: Selectable digital filtering settings (none, low, medium, high) Input Filter Bandwidth: Normal mode plus digital filtering within the ADC. Bandwidth (-3dB) varies with digital filter setting from 4Hz without filtering to 0.33Hz with high filtering. Noise Rejection (Common Mode, High Filter): 155dB @ 60Hz, typical with 100 ohm input unbalance

Output

Output Range: 4 to 20mA DC Output Compliance: RLOAD = (VSUPPLY - 11V) / 0.020A. RLOAD = 0 to 650 ohms @ 24V DC Output Response Time (for step input change) Time to reach 98% of output value (typical) No filtering             104 milliseconds Low filter                 380 milliseconds Medium filter         760 milliseconds High filter                960 milliseconds

Environmental

Operating temperature: -40 to 80°C (-40° to 176°F) Storage temperature: -40 to 85°C (-40 to 185°F) Relative humidity: 5 to 95% non-condensing Power Requirement: 12-32V DC SELV (Safety Extra Low Voltage), 24mA max Isolation: 1500V AC peak. 250V AC (354V DC) continuous isolation between input and output circuits Shock and Vibration Immunity: Vibration: 4g, per IEC 60068-2-6 Shock: 25g, per IEC 60068-2-27 Electromagnetic Compatibility (EMC) Compliance: Radiated Emissions: BS EN 61000-6-4, CISPR 16 RFI: BS EN 61000-6-2, IEC 61000-4-3 Conducted RFI: BS EN 61000-6-2, IEC 61000-4-6 ESD: BS EN 61000-6-2, IEC 61000-4-2 EFT: BS EN 61000-6-2, IEC 61000-4-4 Surge Immunity: BS EN 61000-6-2, IEC 61000-4-5 Approvals: CE compliant. Designed for UL/cUL Class I Division 2 Groups ABCD, ATEX / IECEx Zone 2. II 3 G Ex nA IIC T4 Gc -40°C < Ta < +80°C

Physical

General: General-purpose enclosure designed for mounting on 35mm “T-type” DIN rail Case Material: Self-extinguishing polyamide, UL94 V-0 rated, color light gray. General-purpose NEMA Type 1 enclosure I/O Connectors: Removable plug-in terminal blocks rated for 12A/250V; AWG #26-12, stranded or solid copper wire Dimensions: 12.5 x 114.5 x 99.0 mm (0.5 x 4.51 x 3.90 inches) Shipping Weight: 0.22 kg (0.5 pounds) packed

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