HPT-L-PID
PID Temperature Controller
The HPT-L-PID is a panel-mounted temperature controller with LED indication, a Pt100 input configuration and signal-input, retransmission and communication alternatives.
- Baud-rate range
- 1200–9600 bps
- Accuracy
- ±0.3% FS
- Communication interface
- Two-wire RS485
Supplied by WKSENSOR. Ask us about pricing, availability and delivery.
Product overview
Vertical panel controller
Dark front glass above a row of keys, with side mounting clips and a terminal strip toward the rear.
- Input configurations
- Three-wire Pt100 or thermocouple configurations; voltage and current input alternatives are also available.
- Analogue retransmission
- 4–20 mA, 0–10 mA, 0–20 mA, 1–5 V, 0–5 V or 0–10 V output versions.
- Alarm functions
- Upper and lower alarms with adjustable hysteresis.
Input connection references
The illustrated terminal arrangements cover Pt100, thermocouple and two-wire transmitter input configurations. Terminal layouts differ between case formats.
Three-wire Pt100
1: A · 2: B · 3: B.
Thermocouple
2: A+ · 3: B−.
Two-wire transmitter
4: current input + · 5: 24 V excitation + · 3: common −.
| Terminals | Reference |
|---|---|
| 9 / 10 | Normally-open AL2 alarm contact |
| 11 / 12 | N / L in the illustrated mains-powered circuit |
Panel-mount structure
The bezel and gasket meet the panel. A retaining bracket secures the case from behind, with the terminal cover at the rear.
- 1 · Front bezel
- 2 · Gasket
- 3 · Panel
- 4 · Instrument case
- 5 · Retaining bracket
- 6 · Terminal cover
Serial communication reference
| Interface and protocol | Two-wire bidirectional RS485 · Modbus RTU |
|---|---|
| Serial framing | 1 start bit · 8 data bits · 1 stop bit · no parity |
| Baud-rate range | 1200–9600 bps |
| Communication distance | ≤1000 m |
The AC-powered version lists a 50/60 Hz mains frequency. The transmitter excitation output is separate from the main instrument supply.
Technical reference
Specifications and options
| Parameter | Specification or option |
|---|---|
| Model | HPT-L-PID |
| Instrument function | PID temperature controller |
| Accuracy | ±0.3% FS |
| Indication | LED numerical display |
| Nominal supply version | 220 V |
| Series supply alternatives | 100–240 V AC/DC or 12–36 V DC, according to version |
| Power consumption | ≤5 W for the 100–240 V version; ≤3 W for the 12–36 V DC version |
| Operating environment | −10–50°C; non-condensing and non-icing |
| Communication interface | Two-wire RS485 |
| Communication protocol | Modbus RTU |
| Baud-rate range | 1200–9600 bps |
| Auxiliary transmitter supply | 24 V DC ±1 V; ≤30 mA, load resistance ≥750 Ω |
| Small-contact relay reference | 125 V AC / 0.5 A or 24 V DC / 0.5 A; resistive load |
| Large-contact relay reference | 220 V AC / 2 A or 24 V DC / 2 A; resistive load |
| Brand | WKSENSOR |
| Product reference | HH-841807535390 |
Application scenarios
Oil
Pumpjacks and connecting pipework.
Chemicals
Process towers, vessels and pipework.
Power
Transformers and substation equipment.
Energy
Rows of solar panels.
Water
Treatment basins and access walkways.
Other industrial contexts
Industrial automation, metallurgy, paper, food, light industry, pharmaceuticals, heat treatment and machinery.
