WIRELESS HYDROSTATIC LEVEL TRANSMITTER
Battery-Powered Self-Contained Level Monitoring Solution

SM-HP1
HIGHLIGHTS
- Cost-effective wireless level sensing solution
- 1 1-5 Vdc hydrostatic sensor input
- Sensor works up to 150 ft / 457 m length
- Up to a 10-year battery life
- Supports Over-the-Air (OTA) functionality for updating the device configuration/calibration
- Self-contained, rugged design
- Installs in minutes
- IP66, -40 °C to 70 °C
- 900 MHz range: Up to 1.4 Miles / 2.3 km with Clear Line of Sight
- Secure AES encryption
- Class I, Division 1 (Zone 0)
- Intrinsically Safe

Works with a Hydrostatic Level Sensor
The OleumTech® “HP1” Hydrostatic Transmitter measures water level by monitoring the pressure at the bottom point of vented top mount tanks, deep wells, water towers, rivers, and lakes. This Transmitter is equipped with one 0-5 Vdc analog input and provides high resolution 24-bit analog to digital conversion (ADC). The HP1 Transmitter can supply up to 12 Vdc to the connected submersible pressure sensor. This ultra-low-power transmitter is powered by a replaceable battery pack that provides up to a 10-year life.
Reliable, Scalable and Safe
The field-proven wireless sensor node communicates with an assigned wireless gateway within the OTC Wireless Sensor and I/O Network creating a highly scalable network, accommodating virtually any I/O requirement. The OleumTech Wireless Transmitter is certified for use in Class I, Division 1 (Zone 0) hazardous locations. It is intrinsically safe, designed not to cause a spark, and can be serviced without being removed from a process.
- 0-5 PSI – 1-5 V, 25 ft Cable Length, Weight Kit Included, Part# A005025K
- 0-10 PSI – 1-5 V, 50 ft Cable Length, Weight Kit Included, Part# A010050K
- 0-25 PSI – 1-5 V, 75 ft Cable Length, Weight Kit Included, Part# A025075K
TECHNICAL SPECIFICATIONS
| WIRELESS COMMUNICATIONS | |
|---|---|
| Radio Band | ∙ ISM Band (License-Free) |
| 900 MHz | ∙ FHSS, FSK, AES Encryption 256-bit (900 MHz) |
| Bit Rate | ∙ 900 MHz: 9600 bps / 115.2 kbps |
| Output Power (Max) | ∙ 900 MHz: 10 mW |
| Receiving Sensitivity | ∙ 900 MHz: -110 dBm @ 9600 bps, -100 dBm @ 115.2 kbps |
| RF Range | ∙ 900 MHz: Up to 7500 Feet / 1.4 Miles / 2.3 km with Clear Line of Sight |
| HARDWARE FEATURES | |
|---|---|
| Device Functionality | ∙ Liquid Level Sensing Wireless Transmitter Using Hydrostatic Technology |
| Embedded Controller | ∙ Ultra-Low Power RISC Microcontroller with Internal FLASH (Field Upgradeable) |
| Configuration | ∙ Standard RS232 Serial / BreeZ® Software for PC |
| Sensor Type | ∙ Submersible Hydrostatic Pressure Sensor (Sold Separately), Wide Operating Temperature Range |
| Power Source | ∙ Self-Contained, Internal 3.6 Vdc Lithium Battery |
| Available Power | ∙ Supplies Sensor Power Up to 12 Vdc |
| Sensor Power Up Delay | ∙ Approximately 500 ms |
| Internal Battery Life | ∙ Over 10 Years, Based on User Defined Reporting Intervals |
| Device Diagnostics | ∙ Health Tags: Battery Voltage, Received Signal Strength Indication (RSSI), RF Refresh, RF Timeout |
| MECHANICAL SPECIFICATIONS | |
| Dimensions | ∙ 5" (W) x 12.6" (H) x 4.4" (D) / 127 mm (W) x 320 mm (H) x 112 mm (D) |
| Dimensions, Sink Weight | ∙ 3.36" / 85.3mm (Height) x 1.25" / 31.8mm (Outer Diameter), 0.5" / 12.7mm (Inner Diameter) |
| Package Dimensions | ∙ 10.25" (W) x 14" (H) x 6.5" (D) / 260 mm (W) x 356 mm (H) x 165 mm (D) |
| Package Weight | ∙ ~7 lbs / 3.2 kg |
| Connection Fitting | ∙ 3x 3/4" NPT Female Ports (2x Plugged) |
| Enclosure Casing Material | ∙ Type 4X Aluminum; IP66 |
| CERTIFICATIONS & COMPLIANCE | |
|---|---|
| EMC/EMI | ∙ FCC Part 15 (USA), IC ICES-003 (Canada), ACMA (Australia) |
| ∙ AS/NZS CISPR 32 (Australia), EN55032 & EN55024 (EU) | |
| Safety | ∙ Class I, Division 1, Groups A, B, C, D T3C; Ex ia IIC T3 |
| ∙ Class I, Zone 0; AEx ia IIC T3 | |
| ∙ ATEX: Sira 13ATEX2142X; Ex ia IIC T3 Ga; II 1 G | |
| ∙ IECEx: SIR 13.0054X; Ex ia IIC T3 Ga | |
| GENERAL SPECIFICATIONS | |
|---|---|
| Operating Conditions | ∙ Ambient Temperature (Class I, Division 1 / Zone 0): -40 °C to 70 °C (-40 °F to 158 °F) |
| ∙ Ambient Temperature (Non-Hazardous Applications): -40 °C to 80 °C (-40 °F to 176 °F) | |
| ∙ Humidity: 0 to 99 %, Non-Condensing | |
| Warranty | ∙ 2-Year Parts and Labor |
| Country of Origin | ∙ USA |
| ORDERING INFORMATION | |
|---|---|
| Model Numbers | ∙ SM5000-HP1 |
| Wirelessly Connects To | ∙ OTC Wireless Gateway |
| Configuration Cable | ∙ SX1000-CC2, 20-ft All-in-One Configuration Cable |
| Replacement Battery | ∙ Use OleumTech SX1000-BP3 Only |
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