HX93BC Temp/RH Transmitter w/Display & Probe

 Supported Applications

The HX93B and HX93BD Series are temperature and relative humidity transmitters that provide remote and on-site monitoring, outputting a linearized current or voltage signal proportional to both measured parameters. Relative humidity output is temperature compensated, and the HX93BD models add a built-in digital display so a reading can be taken directly at the sensor.

Offered in wall-mount, duct-mount, and remote-probe configurations, the series fits HVAC and building automation, clean-room and laboratory environments, storage and process rooms, and OEM equipment where humidity and temperature must be transmitted to a controller or datalogger. A gray polycarbonate housing, stainless steel mesh-type filter, and M12 connector make the units durable and easy to service; the temperature/relative humidity probe is field replaceable (except on the duct-mount model).

The transmitters are CE and UKCA marked with optional NIST calibration. They are not intended for condensing humidity conditions. Duct-mount and remote-probe models include a duct mount kit.

Operating Conditions & Performance

The series measures relative humidity from 0 to 100% and temperature over a standard range of -30 to 75°C (-22 to 167°F) (a special -20 to 75°C (-4 to 167°F) range is also offered). Accuracy is specified by band:

• Temperature: ±0.6°C from 0 to 50°C (32 to 122°F); ±1.25°C from -30 to 0°C (-22 to 32°F) and 50 to 75°C (122 to 167°F)
• Relative humidity: ±2.5% from 20 to 80% RH; ±3.5% from 5 to 20% and 80 to 95% RH; ±4% from 0 to 5% and 95 to 100% RH
• Repeatability: ±0.1% RH, ±0.2°C (0.4°F)
• Resolution: 0.1% RH, 0.1°C (0.1°F)

Temperature response time is 5 seconds minimum to 30 seconds maximum, and relative humidity response time is 8 seconds, with the sensor sampling once every 4 seconds. Input voltage is 30 Vdc maximum, with the HX93B series running on 9 to 30 Vdc and the HX93BV2 series on 12 to 30 Vdc. Cable entry is a liquid-tight nylon gland for 2.50 to 8.00 mm (0.09 to 0.315") diameter cable, and the internal 6-position terminal block accepts 14 to 22 gauge wire.

The probe measures Ø16 mm (Ø0.63 in) with a 71.88 mm (2.83 in) stem, and the housing (without probe) is 80.01 L x 82.30 W x 55.63 D mm (3.15 x 3.24 x 2.19 in). The enclosure is rated NEMA 13 (IP54). HX93BD models feature two 4-digit backlit LCDs updating at one reading per second.

Configuration Options

The lineup is organized along three independent choices, which combine to define each model:

• Display: HX93B (transmitter only) or HX93BD (transmitter/indicator with built-in digital display)
• Output: specify 'C' for 4 to 20 mA, 'V0' for 0 to 1 Vdc, 'V1' for 0 to 5 Vdc, or 'V2' for 0 to 10 Vdc — each spanning 0 to 100% RH and -30 to 75°C (-22 to 167°F)
• Mounting: wall mount (base), duct mount (-D), or remote probe (-RP1)

The output choice sets the electrical interface only; all outputs cover the same full RH and temperature spans. Voltage-output V2 (0 to 10 Vdc) units require the higher 12 to 30 Vdc supply. Duct-mount and remote-probe models ship with a duct mount kit, and the remote-probe (-RP1) versions are the heaviest at 352 g (12.4 oz) versus 251 g (8.9 oz) for the base wall-mount transmitter.

Key Product Differences

Each model number is built as HX93B (or HX93BD for display) plus an output code and a mounting suffix. The base ordering configurations are:

• HX93B(*) — Wall mount temperature and relative humidity transmitter
• HX93B(*)-D — Duct mount temperature and relative humidity transmitter
• HX93B(*)-RP1 — Remote probe temperature and relative humidity transmitter
• HX93BD(*) — Wall mount, digital display transmitter/indicator
• HX93BD(*)-D — Duct mount, digital display transmitter/indicator
• HX93BD(*)-RP1 — Remote probe, digital display transmitter/indicator

Applying the output codes yields the full range of models, including current-output units such as HX93BC, HX93BC-D and HX93BDC, and voltage-output units such as HX93BV0, HX93BV1, HX93BV2 and their -D and -RP1 variants (for example HX93BDV2-RP1).

Accessories include the TH-RP field-replaceable remote probe with 3 m (10') cable and M12 connector, the TH-SP short probe, the HX92-CAL calibration kit with 11 and 75% relative humidity standards, regulated power supplies (PSR-24S, PSR-24L, PSR-24L-230), the TX4-100 shielded transmitter cable, CAL-3-HU NIST-traceable calibration, and the IND-KIT spare duct mount kit.