Description
The listed models — TAD991 (Temperature Transmitter with Drift Detection), TD2217, TD2213, TD2211, TCC291, TCC241, TCC231 — represent a family of programmable head-mounted or rail-mounted 2-wire temperature transmitters compatible with RTD (Pt100/Pt1000), thermocouple (J/K/T/E/S/R/B/N), ohm, and mV inputs. They convert sensor signals to a linearized 4–20 mA analog output (some variants offer HART / IO-Link / Foundation Fieldbus — check suffix).
The TAD991 with Drift Detection is an advanced variant capable of monitoring sensor degradation (lead resistance change, element drift) and signaling a fault condition (output saturates < 3.6 mA or > 22 mA), which is critical in safety-instrumented or high-accuracy process loops (pharma, fine chem, power). The TD22xx series are standard programmable transmitters (TD2211 = basic, TD2213 = enhanced diagnostics, TD2217 = HART + enhanced features). The TCC2xx series are compact DIN-rail or head-mount transmitters for cost-sensitive applications.
All are 2-wire loop-powered (4–20 mA) and typically configured via:
- PC software (via USB config cable / HART modem)
- Built-in keypad + LCD (on TAD991 / TD2217 display versions)
- DIP switches (basic TCC models)
Key Features
- Input: Universal — Pt100 (2/3/4-wire), Pt1000, Ni100, TC (J/K/T/E/S/R/B/N), mV (-100…+100 mV), Ohm (0…400 Ω).
- Output: 4–20 mA (sink type, 2-wire loop-powered), some with HART 5/7.
- Drift Detection (TAD991): Monitors reference junction & sensor resistance trend — alerts on abnormal change.
- Sensor Break Detection: Output drives to < 3.6 mA (downscale) or > 22 mA (upscale) on open/shorted sensor.
- Isolation: Galvanic isolation 1.5 kV–2.5 kV (input/output/power) — model dependent.
- Country of Origin: Denmark (PR Electronics OEM) / Japan (Yokogawa branded re-badge common)
Model Reference Table
Model | Mounting | Display / Keypad | Drift Detect | HART | Typical Use |
|---|---|---|---|---|---|
TAD991 | Head (DIN B) or Rail | LCD + Keys (select var.) | ✅ Yes | Some vars. | Critical process — sensor aging alert |
TD2217 | Head or Rail | LCD + Keys | ❌ (basic diag) | ✅ Yes | HART-enabled loop w/ local readout |
TD2213 | Head or Rail | LED / No display (var.) | ❌ | ❌ | General purpose prog. transmitter |
TD2211 | Head (DIN B) | No display | ❌ | ❌ | Cost-optimized head-mount |
TCC291 | Head (DIN B) | No display | ❌ | ❌ | Compact head-mount, PC config only |
TCC241 / TCC231 | Rail / Head | No display (TCC231 = rail) | ❌ | ❌ | DIN-rail version / alt. package |
💡 Note: Exact features (HART, display, isolation voltage, Ex approvals) vary by complete suffix / option code — always verify against your loop diagram.
Technical Specifications (Representative — TAD991 Programmable Transmitter with Drift Detection)
Parameter | Specification |
|---|---|
Model | TAD991 (Temperature Transmitter — Drift Detection capable) |
Input Type | Universal — Pt100 (2/3/4-wire, -200…+850 °C), Pt1000, Ni100, TC (J/K/T/E/S/R/B/N), mV, Ohm |
Output Signal | 4–20 mA (2-wire loop-powered, sink type) |
Supply Voltage (Loop) | 12–30 V DC (typical 24 V DC loop) |
Programmable Span | Any span within sensor limits (e.g., 0…150 °C, -50…+50 °C) |
Accuracy | ≤ ±0.1 % of selected span + sensor error |
Drift Detection | ✅ Monitors sensor reference & lead resistance trend → flags via NAMUR NE43 fault (output < 3.6 mA or > 22 mA) |
Sensor Break Detection | Output < 3.6 mA (downscale) or > 22 mA (upscale) — selectable |
Galvanic Isolation | Typically 1.5 kV AC (input / output / supply) |
Configuration | PC (via USB config cable / HART modem) or front keypad + LCD (on display version) |
Approvals | CE, UL, cUL, ATEX / IECEx (where specified in suffix) |
Operating Temp. | -40 … +80 °C (electronics) |
Mounting | DIN B connection head (Ø6 mm probe stem compatible) or DIN rail (with adapter) |
Weight | ~ 100 g |
Standards | IEC 60751 (Pt100), IEC 60584 (TC), NAMUR NE21 / NE43 / NE89 |
Warranty & After-Sales
- Factory new units: 12 months warranty
- Refurbished units: 3-6 months warranty
- Technical support for:
- Input type selection (Pt100 3-wire recommended for best accuracy/cost)
- Span & zero setting (via PC software or keypad)
- Loop wiring (2-wire 4–20 mA to PLC — include 250 Ω shunt if PLC lacks internal)
- Drift detection interpretation (NAMUR NE43fault codes)
- Cross-reference vs. ifm TA2002, Endress+Hauser iTEMP, Honeywell STT3000, WIKA T91
Delivery Time
- Standard delivery: 3-5 working days (stock items)
- Express shipping available upon request
Why Choose Our Store
- Genuine OEM temperature transmitters (Yokogawa / PR Electronics brand or re-badged per listing)
- Global supply network with competitive pricing
- Expertise in temperature measurement & analog signal conditioning
- Comprehensive technical documentation (wiring diagrams, configuration software guide, RTD vs TC application note)
- Responsive customer service and support
Applications
- Process temperature monitoring (refinery, petrochemical, fine chemical — with drift detection for SIL loops)
- Power plant (feedwater, steam temp. — HART + high accuracy)
- Food & pharma (CIP/SIP tank temp. — with traceable calibration)
- Machine tool coolant / extruder barrel temp.
- Retrofit of bare RTD/TC probes to 4–20 mA analog loops
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