TY862 Intelligent Temperature Transmitter (PT100)

Overview

The TY862 series intelligent temperature transmitter is an industrial temperature measuring instrument that uses a PT100 platinum resistance element to measure process temperature from -200 °C to 1300 °C and converts it into a standard 4–20 mA, 0–5 VDC or 0–10 VDC output, with optional RS485, RS232 and HART communication. Each unit is automatically tested by computer, and laser resistance-trimming technology performs zero-point and sensitive temperature compensation over a wide temperature range, fully exploiting the technical advantages of the sensing element.

The transmitter works on the resistance-temperature effect of the PT100 sensor: the change in resistance with temperature produces a differential voltage signal through a dedicated processing unit; this signal is then amplified, linearized against the corresponding range, and converted into standard analog or digital output signals. The TY862 also has strong anti-interference capability and self-diagnostics — it suppresses out-of-band noise to ensure data accuracy, and if the measured temperature goes outside the configured range, the single-chip system immediately issues an alarm command with an audible beep warning.

With excellent processing of cold-junction, over-range and temperature-drift effects, high stability and high measurement accuracy, the TY862 series is a wide-range temperature instrument well suited to industrial automation and temperature measurement in process fields. WELK Meters supplies it in stainless steel compact and intelligent versions, with or without local display, in ordinary, intrinsically safe and explosion-proof certifications.

Features

• Converts the temperature signal of the measured medium more accurately, improving measurement precision and effectively avoiding production incidents caused by inaccurate temperature readings
• Operates normally in extreme high- and low-temperature environments, ensuring the stability and safety of the production process
• Advanced signal processing technology provides stronger immunity to electromagnetic interference and noise, improving data transmission quality
• Automatic monitoring of instrument working status, sensor status and output status; self-diagnostics and self-calibration enable equipment status detection and easy maintenance
• Multiple communication interfaces available, such as HART and MODBUS, for convenient communication with other devices, remote control and data acquisition
• Wide application range, adaptable to different working environments; simple and flexible operation

Specifications

Parameter	Value
Measuring range	-200–1300 °C
Sensing element	PT100 platinum resistance
Output signal	4–20 mA, 0–5 VDC, 0–10 VDC
Communication	RS485, RS232, HART (optional)
Load resistance	≤500 Ω
Power supply	24 VDC
Stability	Better than 0.2%/year (standard products)
Temperature coefficient	≤0.05%/°C
Additional error	≤ ±0.002%/V
Accuracy (error)	0.2%, 0.5%
Explosion-proof rating	Ex d II CT6 (printed “EXD II CT6”)
Protection rating	IP65
Power consumption	≤1 W
Threaded connection	M20×1.5, M27×2, G1/2, G1/4 optional
Probe (stem) diameter	8 mm, 10 mm, 12 mm optional; all parameters customizable
Mounting / insertion	Fixing flange (DN25/DN40) or fixing thread (M27×2 / M20×1.5), customizable; insertion depth customizable; cooling neck 304 stainless steel

Ordering Code

Item	Code	Description
TY86	—	Temperature transmitter
Form	1 / 2	1 = stainless steel compact type; 2 = intelligent type
Display	0 / 1	0 = without display; 1 = with display
Temperature range	T0–T6, DZ	T0 = 0–100 °C; T1 = 0–200 °C; T2 = 0–300 °C; T3 = 0–400 °C; T4 = 0–500 °C; T5 = -50–200 °C; T6 = -50–400 °C; DZ = custom range within -200 °C–500 °C
Output signal	1 / 2 / 3 / 4	1 = 4–20 mA; 2 = 4–20 mA + HART; 3 = 4–20 mA + two switch (relay) outputs; 4 = RS485
Process connection	MA / MB / GA / GB / GC / KA / KB / DA / DB / DC / DD / DZ	MA = M20×1.5; MB = M27×2; GA = G1/2; GB = G3/4; GC = G1; KA = sanitary clamp 40; KB = sanitary clamp 50.5; DA = DN25 flange; DB = DN32 flange; DC = DN40 flange; DD = DN50 flange; DZ = custom — contact factory
Certification	0 / 1 / 2	0 = ordinary (non-Ex); 1 = intrinsically safe type; 2 = explosion-proof type
Cold-end (neck) length	D=_	Fill in length after “D=”
Insertion depth	L=_	Fill in length after “L=”

Ordering example: TY86 1 1 T0 1 MA 0

Applications

• Hydraulic systems
• Construction industry
• Industrial equipment
• Chemical industry
• Boilers
• Pipelines and process plants (oil & gas transmission lines)
• Industrial automation temperature measurement and control

FAQ

What output signals does the TY862 temperature transmitter support?

Standard analog outputs are 4–20 mA, 0–5 VDC and 0–10 VDC. Per the ordering code you can also select 4–20 mA with HART, 4–20 mA with two switch (relay) outputs, or RS485 digital output; RS232 communication is also available as an option.

Is an explosion-proof version of the TY862 available?

Yes. The series carries the explosion-proof rating Ex d II CT6 (printed “EXD II CT6” on the datasheet), and the ordering code offers certification options: 0 = ordinary (non-Ex), 1 = intrinsically safe type, 2 = explosion-proof type.

How do I select the right TY862 model for my process?

Build the model number from the ordering code table (form, display, range, output, process connection, certification, neck length, insertion depth) — for example TY86 1 1 T0 1 MA 0. If you are unsure, contact us with your medium, temperature range and process connection; we respond within 24 hours.