HPT-H
Multichannel Process Indicator
The HPT-H is a multichannel inspection instrument with LED indication, upper/lower-limit alarms and serial communication configurations. Thermocouple, three-wire Pt100 and electrical-signal inputs are shown in its connection references.
- Accuracy
- ±0.2% FS
- Communication configurations
- RS-485 two-wire / RS-232
- Communication protocol
- Modbus RTU
Supplied by WKSENSOR. Ask us about pricing, availability and delivery.
Product overview
Multichannel panel instrument
A rectangular display bezel, vented black casing, side mounting clips and rear terminal block.
The eight-channel version uses LED numerical indication. Over-range flashing and upper/lower-limit alarms include deadband settings; an RS-232 microprinter interface supports manual, timed or alarm printing.
| Input reference | Terminal markings |
|---|---|
| Thermocouple | A: negative (−); B: positive (+) |
| Three-wire Pt100 | A, B and C |
| Current transmitter | A: negative (−); D: positive (+) |
Channel-input references
The channel connector uses lettered A/B/C/D positions. The two-wire transmitter illustration uses a separate DC supply.
| Unified retransmission | 11: −; 12: +; mA or voltage version |
|---|---|
| Sub-unit communication link | 4: +; 5: − |
| Cold-junction compensation connector | 1: black wire; 2: yellow wire; 3: red wire |
| DC main-power version | 13: +; 14: − |
| AC main-power version | 13: L; 14: N |
| Auxiliary output 1P | 15: −; 16: + |
| Auxiliary output 2P | 17: −; 18: + |
| Unified alarm AL2 | 19: NC; 20: common; 21: NO |
| Unified alarm AL1 | 22: NC; 23: common; 24: NO |
Configuration and selection
Measurement-input versions accept thermocouple, three-wire Pt100, current or voltage signals. Main power versions are 100–240 V AC/DC or 20–29 V DC. Output choices include contact alarms, auxiliary 24 V supply and microprinter configurations.
| RS-485 | 9: A; 10: B Two-wire configuration, distance ≤1,000 m |
|---|---|
| RS-232 | 8: GND; 9: RXD; 10: TXD Distance ≤15 m |
Technical reference
Specifications and options
| Parameter | Specification or option |
|---|---|
| Model | HPT-H |
| Channel configuration | 8-channel version |
| Indication | LED numerical display |
| Accuracy | ±0.2% FS |
| Input configurations | Thermocouple / three-wire Pt100 / current / voltage |
| Alarm functions | Over-range flashing indication; upper/lower-limit contact alarms with deadband |
| Alarm contact rating | 220 V AC / 2 A or 24 V DC / 2 A; resistive load |
| Communication configurations | RS-485 two-wire / RS-232 |
| Communication protocol | Modbus RTU |
| Serial format | 1 start bit, 8 data bits, 1 stop bit, no parity |
| Baud rate | 1,200–19,200 bps |
| Communication distance | RS-485: ≤1,000 m; RS-232: ≤15 m |
| Printing output | RS-232 microprinter interface; manual, timed or alarm printing |
| Auxiliary output | 24 V DC ±1 V; ≤30 mA; load resistance ≥750 Ω |
| Main power configurations | 100–240 V AC/DC, ≤5 W (AC: 50/60 Hz); 20–29 V DC, ≤3 W |
| Operating temperature | −10–50 °C; no condensation or icing |
| Brand | WKSENSOR |
| Product reference | HH-841816703707 |
Application scenarios
Multichannel process indication for oil, chemicals, power, energy, water and industrial automation.
Oil
Pumping equipment across an oilfield.
Chemicals
Process towers and connected pipework.
Power
Outdoor electrical substation equipment.
Energy
Solar panels arranged in outdoor rows.
Water
Water-treatment channels and access walkways.
