HPT-H
Single-Channel Process Indicator
The HPT-H displays a selected voltage, current, RTD or thermocouple input, with upper/lower-limit alarms and configurable signal outputs.
- Display range
- −1999 to 9999
- Measurement accuracy
- ±0.3% FS
- Alarm output
- Upper/lower-limit relay alarms with adjustable hysteresis
Supplied by WKSENSOR. Ask us about pricing, availability and delivery.
Product overview
Single-channel panel indication
A horizontal panel instrument with a front readout, four control keys and side mounting clips.
A single measuring channel accepts a selected voltage, current, RTD or thermocouple input. Upper and lower limits include adjustable alarm hysteresis; analogue retransmission and RS-485/Modbus RTU are configuration options.
Configuration and selection
Sensor input references
These arrangements apply to the illustrated 12-terminal version. Terminal layouts differ with the case configuration.
| Three-wire Pt100 | 1: A; 2 and 3: B |
|---|---|
| RTD lead reference | Equal resistances; ≤15 Ω per lead |
| Thermocouple / mV | 2: +; 3: − |
| Current input | 4: +; 3: − |
| Transmitter feed | 5: DC24V +; 3: − |
| Illustrated alarm | 9 / 10: normally open, AL2 |
| Illustrated mains | 11: N; 12: L |
Panel mounting reference
- Front of panel
- 1 · Bezel; 2 · Gasket; 3 · Panel
- Behind panel
- 4 · Case; 5 · Retaining bracket; 6 · Terminal cover
Alarm contact versions
| Version | Contact rating |
|---|---|
| Small contact | 125 V AC / 0.5 A 24 V DC / 0.5 A |
| Large contact | 220 V AC / 2 A 24 V DC / 2 A |
| Current retransmission | 4–20 mA / 0–10 mA / 0–20 mA |
|---|---|
| Voltage retransmission | 1–5 V / 0–5 V / 0–10 V |
| Serial version | Two-wire RS-485, Modbus RTU; 1200–9600 bit/s, 8 data bits, no parity, 1 stop bit |
Instrument power and sensor supply
Instrument power: 100–240 V AC/DC (≤5 W), or 12–36 V DC (≤3 W).
Sensor power output: 24 V DC ±1 V, ≤30 mA at load resistance ≥750 Ω.
Technical reference
Specifications and options
| Parameter | Specification or option |
|---|---|
| Model | HPT-H |
| Measuring channels | 1 |
| Indication | LED |
| Display range | −1999 to 9999 |
| Measurement accuracy | ±0.3% FS |
| Input options | Voltage / current / RTD / thermocouple |
| Analogue retransmission options | 4–20 mA / 0–10 mA / 0–20 mA / 1–5 V / 0–5 V / 0–10 V |
| Alarm output | Upper/lower-limit relay alarms with adjustable hysteresis |
| Communication configuration | Two-wire RS-485 / Modbus RTU |
| Baud rate | 1200–9600 bit/s |
| Serial framing | 8 data bits / no parity / 1 stop bit |
| Sensor power output | 24 V DC ±1 V; ≤ 30 mA at load resistance ≥ 750 Ω |
| Supply options | 100–240 V AC/DC / 12–36 V DC |
| AC supply frequency | 50 / 60 Hz |
| Power consumption | ≤ 5 W for 100–240 V version / ≤ 3 W for 12–36 V DC version |
| Working temperature | −10–50°C; non-condensing and non-freezing |
| Brand | WKSENSOR |
| Product reference | HH-838638530096 |
Application scenarios
Single-channel process indication for oil, chemicals, power, energy, water and industrial automation.
Oil
Oil-field pumping units and pipework.
Chemicals
Process towers, tanks and connecting pipes.
Power
Substation equipment and overhead power lines.
Energy
Solar-panel arrays in an open landscape.
Water
Treatment basins and waterside walkways.
