HPT-S
Single-Channel Process Indicator
A single-channel LED indicator with configurable signal input, analogue-output options and upper/lower alarms with deadband adjustment.
- Display range
- −1999 to 9999
- Baud-rate range
- 1200–9600 bps
- Selected accuracy
- 0.3% FS
Supplied by WKSENSOR. Ask us about pricing, availability and delivery.
Product overview
The HPT-S accepts one configured voltage, current, RTD or thermocouple input for LED numerical indication. Upper and lower alarm functions include adjustable deadband, with analogue-output and RS-485 communication options.
Single-channel panel instrument
One configured signal input feeds the numerical display. Panel retaining clips secure the instrument behind the front bezel.
- Signal indication
- The numerical display covers −1999 to 9999 with a configured external signal input.
- Limit alarms
- Upper and lower limit alarms have adjustable alarm deadband.
Input terminal examples
The illustrated 12-terminal reference uses the assignments below. Terminal layouts differ with the instrument case and configuration.
- Three-wire RTD
- 1: A · 2: B · 3: B. Lead resistances must be equal and no more than 15 Ω per lead.
- Thermocouple
- 2: A+ · 3: B−. Use the matching screened compensation cable.
- Two-wire transmitter
- 4: mA input + · 5: DC 24 V excitation + · 3: common −.
- Alarm and power reference
- 9–10: AL2 normally open · 11: N · 12: L.
Panel installation
Insert the case through the panel cutout and secure it with the rear retaining brackets. Leave at least 38 mm between adjacent cutouts for ventilation and mounting access.
Configuration and selection
- Input
- Voltage, current, RTD or thermocouple signal input.
- Output
- Analogue current or voltage output options, relay alarm outputs and two-wire RS-485 communication with Modbus RTU. The RS-485 distance reference is ≤1000 m.
- Power
- 100–240 V AC/DC or 12–36 VDC main-power versions; the AC mains reference is 50/60 Hz. The 24 VDC excitation output is separate from the main supply.
Technical reference
Specifications and options
| Parameter | Specification or option |
|---|---|
| Model | HPT-S |
| Input channels | Single channel |
| Input-signal options | Voltage / current / RTD / thermocouple |
| Indication | LED numerical display |
| Display range | −1999 to 9999 |
| Selected accuracy | 0.3% FS |
| Analogue-output options | 4–20 mA / 0–10 mA / 0–20 mA / 1–5 V / 0–5 V / 0–10 V |
| Alarm functions | Upper and lower limits; adjustable alarm deadband |
| Communication interface | RS-485, two-wire |
| Communication protocol | Modbus RTU |
| Baud-rate range | 1200–9600 bps |
| Serial framing | 1 start bit / 8 data bits / 1 stop bit / no parity |
| Sensor excitation | 24 VDC ±1 V; ≤30 mA |
| Excitation load | ≥750 Ω |
| Main-power versions | 100–240 V AC/DC / 12–36 VDC |
| Power consumption | ≤5 W for the 100–240 V version; ≤3 W for the 12–36 VDC version |
| Relay-contact reference versions | Small — 0.5 A at 125 VAC or 24 VDC; large — 2 A at 220 VAC or 24 VDC; resistive load |
| Operating temperature | −10–50°C, non-condensing and non-icing |
| Brand | WKSENSOR |
| Product reference | HH-842320480342 |
Application scenarios
Applications include power, petrochemicals, metallurgy, chemicals, paper manufacturing, food, light industry, pharmaceuticals, heat treatment, water treatment and machinery. Additional applications include energy and industrial automation.
Power
Industrial process indication in power-sector applications.
Water treatment
Process-signal display and limit-alarm applications in water treatment.
